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                package main  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                import (  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	"os"  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	"path/filepath"  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	"testing"  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                )  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                func TestJoiner(t *testing.T) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                	// Disable progress bar for tests  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	displayProgress = false  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	// Create temporary directory for test files  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	tempDir := t.TempDir()  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	// Create test files  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	file1Path := filepath.Join(tempDir, "file1")  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	file2Path := filepath.Join(tempDir, "file2")  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	file3Path := filepath.Join(tempDir, "file3")  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	joinedPath := filepath.Join(tempDir, "joined")  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	file1Content := "content of file 1"  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	file2Content := "content of file 2"  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	file3Content := "content of file 3"  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	err := os.WriteFile(file1Path, []byte(file1Content), 0644)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	if err != nil { | 
            
            
                                                                        
                            
            
                                    
            
            
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                		t.Fatalf("Failed to create test file1: %v", err) | 
            
            
                                                                        
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	err = os.WriteFile(file2Path, []byte(file2Content), 0644)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	if err != nil { | 
            
            
                                                                        
                            
            
                                    
            
            
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                		t.Fatalf("Failed to create test file2: %v", err) | 
            
            
                                                                        
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	err = os.WriteFile(file3Path, []byte(file3Content), 0644)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	if err != nil { | 
            
            
                                                                        
                            
            
                                    
            
            
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                		t.Fatalf("Failed to create test file3: %v", err) | 
            
            
                                                                        
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	// Test joining files  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	files := []string{file1Path, file2Path, file3Path} | 
            
            
                                                                        
                            
            
                                    
            
            
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                	err = JoinFile(files, joinedPath)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	if err != nil { | 
            
            
                                                                        
                            
            
                                    
            
            
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                		t.Fatalf("JoinFile() failed: %v", err) | 
            
            
                                                                        
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	// Verify joined content  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	joinedContent, err := os.ReadFile(joinedPath)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	if err != nil { | 
            
            
                                                                        
                            
            
                                    
            
            
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                		t.Fatalf("Failed to read joined file: %v", err) | 
            
            
                                                                        
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	expectedContent := file1Content + file2Content + file3Content  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	if string(joinedContent) != expectedContent { | 
            
            
                                                                        
                            
            
                                    
            
            
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                		t.Errorf("Expected joined content '%s', got '%s'", expectedContent, string(joinedContent)) | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                func TestJoinerSorting(t *testing.T) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	// Disable progress bar for tests  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	displayProgress = false  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	// Create temporary directory for test files  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	tempDir := t.TempDir()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	// Create test files with names that need to be sorted  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	fileAPath := filepath.Join(tempDir, "fileC") // Intentionally out of order  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	fileBPath := filepath.Join(tempDir, "fileA")  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	fileCPath := filepath.Join(tempDir, "fileB")  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	joinedPath := filepath.Join(tempDir, "joined")  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	// Write content that makes the sorting order obvious  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	err := os.WriteFile(fileAPath, []byte("C"), 0644) | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	if err != nil { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		t.Fatalf("Failed to create test file: %v", err) | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	err = os.WriteFile(fileBPath, []byte("A"), 0644) | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	if err != nil { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		t.Fatalf("Failed to create test file: %v", err) | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	err = os.WriteFile(fileCPath, []byte("B"), 0644) | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	if err != nil { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		t.Fatalf("Failed to create test file: %v", err) | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	// Test joining files  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	files := []string{fileAPath, fileBPath, fileCPath} | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	err = JoinFile(files, joinedPath)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	if err != nil { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		t.Fatalf("JoinFile() failed: %v", err) | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	// Verify joined content based on lexicographical sorting  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	joinedContent, err := os.ReadFile(joinedPath)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	if err != nil { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		t.Fatalf("Failed to read joined file: %v", err) | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	// Expect files to be joined in alphabetical order (A, B, C)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	expectedContent := "ABC"  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	if string(joinedContent) != expectedContent { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		t.Errorf("Expected joined content '%s', got '%s' (files not sorted correctly)", | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			expectedContent, string(joinedContent))  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    108
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                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                func TestJoinerError(t *testing.T) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    111
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                	// Disable progress bar for tests  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    112
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                	displayProgress = false  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    113
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                    114
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                	// Create temporary directory for test files  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    115
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                	tempDir := t.TempDir()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	// Create a test file  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	filePath := filepath.Join(tempDir, "file1")  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	err := os.WriteFile(filePath, []byte("test content"), 0644) | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	if err != nil { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		t.Fatalf("Failed to create test file: %v", err) | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    124
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                	// Include a non-existent file in the list  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	nonExistentFile := filepath.Join(tempDir, "nonexistent")  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	joinedPath := filepath.Join(tempDir, "joined")  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    127
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                    128
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                	// Test joining files  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    129
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                	files := []string{filePath, nonExistentFile} | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    130
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                	err = JoinFile(files, joinedPath)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    131
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                    132
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                	// Expect an error because one file doesn't exist  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	if err == nil { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    134
                 | 
                                    
                                                     | 
                
                 | 
                		t.Errorf("Expected error when joining non-existent file, got nil") | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    135
                 | 
                                    
                                                     | 
                
                 | 
                		// Clean up if test fails  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    136
                 | 
                                    
                                                     | 
                
                 | 
                		os.Remove(joinedPath)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    137
                 | 
                                    
                                                     | 
                
                 | 
                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    138
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    139
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    140
                 | 
                                    
                                                     | 
                
                 | 
                func TestJoinerWithProgressBar(t *testing.T) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    141
                 | 
                                    
                                                     | 
                
                 | 
                	// Enable progress bar for this test  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    142
                 | 
                                    
                                                     | 
                
                 | 
                	originalDisplayProgress := displayProgress  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    143
                 | 
                                    
                                                     | 
                
                 | 
                	displayProgress = true  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    144
                 | 
                                    
                                                     | 
                
                 | 
                	defer func() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    145
                 | 
                                    
                                                     | 
                
                 | 
                		displayProgress = originalDisplayProgress  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    146
                 | 
                                    
                                                     | 
                
                 | 
                	}()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    147
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    148
                 | 
                                    
                                                     | 
                
                 | 
                	// Create temporary directory for test files  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    149
                 | 
                                    
                                                     | 
                
                 | 
                	tempDir := t.TempDir()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    150
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    151
                 | 
                                    
                                                     | 
                
                 | 
                	// Create test files  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    152
                 | 
                                    
                                                     | 
                
                 | 
                	file1Path := filepath.Join(tempDir, "file1")  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    153
                 | 
                                    
                                                     | 
                
                 | 
                	file2Path := filepath.Join(tempDir, "file2")  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    154
                 | 
                                    
                                                     | 
                
                 | 
                	joinedPath := filepath.Join(tempDir, "joined")  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    155
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    156
                 | 
                                    
                                                     | 
                
                 | 
                	err := os.WriteFile(file1Path, []byte("content1"), 0644) | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    157
                 | 
                                    
                                                     | 
                
                 | 
                	if err != nil { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    158
                 | 
                                    
                                                     | 
                
                 | 
                		t.Fatalf("Failed to create test file: %v", err) | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    159
                 | 
                                    
                                                     | 
                
                 | 
                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    160
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    161
                 | 
                                    
                                                     | 
                
                 | 
                	err = os.WriteFile(file2Path, []byte("content2"), 0644) | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    162
                 | 
                                    
                                                     | 
                
                 | 
                	if err != nil { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    163
                 | 
                                    
                                                     | 
                
                 | 
                		t.Fatalf("Failed to create test file: %v", err) | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    164
                 | 
                                    
                                                     | 
                
                 | 
                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    165
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    166
                 | 
                                    
                                                     | 
                
                 | 
                	// Test joining files with progress bar enabled  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    167
                 | 
                                    
                                                     | 
                
                 | 
                	files := []string{file1Path, file2Path} | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    168
                 | 
                                    
                                                     | 
                
                 | 
                	err = JoinFile(files, joinedPath)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    169
                 | 
                                    
                                                     | 
                
                 | 
                	if err != nil { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    170
                 | 
                                    
                                                     | 
                
                 | 
                		t.Fatalf("JoinFile() with progress bar failed: %v", err) | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    171
                 | 
                                    
                                                     | 
                
                 | 
                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    172
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    173
                 | 
                                    
                                                     | 
                
                 | 
                	// Verify joined content  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    174
                 | 
                                    
                                                     | 
                
                 | 
                	joinedContent, err := os.ReadFile(joinedPath)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    175
                 | 
                                    
                                                     | 
                
                 | 
                	if err != nil { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    176
                 | 
                                    
                                                     | 
                
                 | 
                		t.Fatalf("Failed to read joined file: %v", err) | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    177
                 | 
                                    
                                                     | 
                
                 | 
                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    178
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    179
                 | 
                                    
                                                     | 
                
                 | 
                	expectedContent := "content1content2"  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    180
                 | 
                                    
                                                     | 
                
                 | 
                	if string(joinedContent) != expectedContent { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    181
                 | 
                                    
                                                     | 
                
                 | 
                		t.Errorf("Expected joined content '%s', got '%s'", expectedContent, string(joinedContent)) | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    182
                 | 
                                    
                                                     | 
                
                 | 
                	}  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    183
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    184
                 | 
                                    
                                                     | 
                
                 | 
                 |