I was looking to get different return values for the same method while calling it multiple times. I tried many things but did not get an exact answer for this.
$mock = $this->getMockBuilder('Test') ->disableOriginalConstructor() ->setMethods(array('testMethod')) ->getMock(); $mock->expects($this->once())->method('testMethod')->will($this->returnValue(true)); $mock->expects($this->second())->method('testMethod')->will($this->returnValue(false)); You can use willReturnOnConsecutiveCalls method
$mock ->expects($this->exactly(2)) ->method('testMethod') ->willReturnOnConsecutiveCalls(true, false); Alternative (for phpunit < 4):
$mock ->expects($this->exactly(2)) ->method('testMethod') ->will($this->onConsecutiveCalls(true, false)); 
willReturn() can also handle multiple arguments to allow for consecutive calls.I found this link which helps me to get it done using at($index) method. It returns a matcher that matches when the method it is evaluated for is invoked at the given $index.
The $index parameter for the at() matcher refers to the index, starting at zero, in all method invocations for a given mock object. Exercise caution when using this matcher as it can lead to brittle tests which are too closely tied to specific implementation details. More Details
$mock = $this->getMockBuilder('Test') ->disableOriginalConstructor() ->setMethods(array('testMethod')) ->getMock(); $mock->expects($this->at(0))->method('testMethod')->will($this->returnValue(true)); $mock->expects($this->at(1))->method('testMethod')->will($this->returnValue(false)); 
at here because the method was being multiple time in a loop so I want to return a different result on the index when the function was called.
at() is deprecated in PHPUnit 9 and will be removed in version 10