Mock objects in PHPUnit

PHPUnit: Mock ObjectsRinat Khabibiev

* www.ExigenServices.com

PHPUNIT: MOCK OBJECTS

• objects supplies non-deterministic results

• has states that are difficult to create or reproduce

• slow

• does not yet exist

• would have to include information and methods exclusively

for testing purposes

Difficulties when writing Unit Tests



Code example: MyClass



Code example: MyClassTest



getMock definition



• getMockBuilder($classname)

• setMethods($methods)

• setConstructorArgs($args)

• setMockClassName($name)

• disableOriginalConstructor()

• disableOriginalClone()

• disableAutoload()

• getMock()

Chaining: getMockBuilder



Chaining: getMockBuilder, examples



• getMock()

• getMockBuilder()

• getMockClass()

• getMockForAbstractClass()

• getMockFromWsdl()

Ways to get mock



Method call expectation



• any()

• once()

• never()

• atLeastOnce()

• exactly($count)

• at($index)

Asserting the number and order of method calls



Method calls order



Stubs



• returnValue($value)

• returnArgument($index)

• returnSelf()

• returnValueMap($map)

• returnCallback($callback)

• onConsecutiveCalls()

• throwException($exception)

Various behaviors of stubs



Asserting method's arguments



Usable constraints for checking arguments

• attribute()

• anything()

• arrayHasKey()

• contains()

• equalTo()

• attributeEqualTo()

• fileExists()

• greaterThan()

• greaterThanOrEqual()

• classHasAttribute()

• classHasStaticAttribute()

• hasAttribute()

• identicalTo()

• isFalse()

• isInstanceOf()

• isNull()

• isTrue()

• isType()

• lessThan()

• lessThanOrEqual()

• matchesRegularExpression()

• stringContains()



Logical combination of constraints

• logicalAnd()

• logicalOr()

• logicalNot()

• logicalXor()



Example



Stubbing of static methods



Impossible

Stubbing of private methods



Impossible

Stubbing of functions



The end

Date post:	17-Jul-2015
Category:	Internet
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Mock objects in PHPUnit

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