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src.hamcrest.library.collection.IsEmpty.matches()   B
last analyzed

↳ Parent: src.hamcrest.library.collection.IsEmpty

Complexity

Conditions 5

Size

Total Lines 15

Duplication

Lines 0
Ratio 0 %
Metric Value
cc 5
dl 0
loc 15
rs 8.5454
1 
from hamcrest.core.base_matcher import BaseMatcher
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__author__ = "Chris Rose"

            


            
                                                                                                            
                            
            
                                    
            
            

                
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__copyright__ = "Copyright 2012 hamcrest.org"

            


            
                                                                                                            
                            
            
                                    
            
            

                
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__license__ = "BSD, see License.txt"

            


            
                                                                                                            
                            
            
                                    
            
            

                
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class IsEmpty(BaseMatcher):

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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    def matches(self, item, mismatch_description=None):

            


            
                                                                        
                            
            
                                    
            
            

                
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        try:

            


            
                                                                        
                            
            
                                    
            
            

                
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            if len(item) == 0:

            


            
                                                                        
                            
            
                                    
            
            

                
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                return True

            


            
                                                                        
                            
            
                                    
            
            

                
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            if mismatch_description:

            


            
                                                                        
                            
            
                                    
            
            

                
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                mismatch_description \

            


            
                                                                        
                            
            
                                    
            
            

                
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                    .append_text('has %d item(s)' % len(item))

            


            
                                                                        
                            
            
                                    
            
            

                
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        except TypeError:

            


            
                                                                        
                            
            
                                    
            
            

                
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            if mismatch_description:

            


            
                                                                        
                            
            
                                    
            
            

                
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                mismatch_description \

            


            
                                                                        
                            
            
                                    
            
            

                
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                    .append_text('does not support length')

            


            
                                                                        
                            
            
                                    
            
            

                
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            return False

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    def describe_to(self, description):

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        description.append_text('an empty collection')

            


            
                                                                                                            
                            
            
                                    
            
            

                
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def empty():

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    """

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    This matcher matches any collection-like object that responds to the

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    __len__ method, and has a length of 0.

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    """

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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    return IsEmpty()

            


            
                                                        
            
                                    
            
            

                
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