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DecimalSqrtTest::testNearZeroSqrt()   A
last analyzed

↳ Parent: DecimalSqrtTest

Complexity

Conditions 1
Paths 1

Size

Total Lines 5
Code Lines 3

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
c 0
b 0
f 0
dl 0
loc 5
rs 9.4285
cc 1
eloc 3
nc 1
nop 0
1 
<?php
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use Litipk\BigNumbers\Decimal as Decimal;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use PHPUnit\Framework\TestCase;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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date_default_timezone_set('UTC');

            


            
                                                                                                            
                            
            
                                    
            
            

                
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class DecimalSqrtTest extends TestCase

            


            
                                                                                                            
                            
            
                                    
            
            

                
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{

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    public function testIntegerSqrt()

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        $this->assertTrue(Decimal::fromInteger(0)->sqrt()->equals(Decimal::fromInteger(0)));

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        $this->assertTrue(Decimal::fromInteger(1)->sqrt()->equals(Decimal::fromInteger(1)));

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        $this->assertTrue(Decimal::fromInteger(4)->sqrt()->equals(Decimal::fromInteger(2)));

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        $this->assertTrue(Decimal::fromInteger(9)->sqrt()->equals(Decimal::fromInteger(3)));

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        $this->assertTrue(Decimal::fromInteger(16)->sqrt()->equals(Decimal::fromInteger(4)));

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        $this->assertTrue(Decimal::fromInteger(25)->sqrt()->equals(Decimal::fromInteger(5)));

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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    public function testNearZeroSqrt()

            


            
                                                                        
                            
            
                                    
            
            

                
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    {

            


            
                                                                        
                            
            
                                    
            
            

                
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        $this->assertTrue(Decimal::fromString('0.01')->sqrt()->equals(Decimal::fromString('0.1')));

            


            
                                                                        
                            
            
                                    
            
            

                
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        $this->assertTrue(Decimal::fromString('0.0001')->sqrt()->equals(Decimal::fromString('0.01')));

            


            
                                                                        
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    /**

            


            
                                                                                                            
                            
            
                                    
            
            

                
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     * @expectedException \DomainException

            


            
                                                                                                            
                            
            
                                    
            
            

                
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     * @expectedExceptionMessage Decimal can't handle square roots of negative numbers (it's only for real numbers).

            


            
                                                                                                            
                            
            
                                    
            
            

                
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     */

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    public function testFiniteNegativeSqrt()

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        Decimal::fromInteger(-1)->sqrt();

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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}

            


            
                                                        
            
                                    
            
            

                
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