Strange type casting behavior when mocking methods with a return type

[guillemcanal]

I'm facing a strange behavior when trying to mock a method that provide a return type which is an integer.

When you provide willReturn() with a boolean or float, The mocked object will type cast the given value into an integer silently:

PHP v7.0.10
PHPUnit v5.5.5

class Foo
{
    public function getAnInteger(): int
    {
        return 666;
    }
}

class SomeTest extends \PHPUnit\Framework\TestCase
{
    /** @test */
    public function itTypeCastABooleanIntoAnIntegerWhichIsWeird()
    {
        $foo = $this->getMockBuilder(Foo::class)->getMock();
        $foo->method('getAnInteger')->willReturn(false);

        self::assertThat($foo->getAnInteger(), self::identicalTo(0));
    }

    /** @test */
    public function itTypeCastAFloatIntoAnIntegerWhichIsWeird()
    {
        $foo = $this->getMockBuilder(Foo::class)->getMock();
        $foo->method('getAnInteger')->willReturn(666.666);

        self::assertThat($foo->getAnInteger(), self::identicalTo(666));
    }
}

Is that desired ?

[stale]

This issue has been automatically marked as stale because it has not had activity within the last 60 days. It will be closed after 7 days if no further activity occurs. Thank you for your contributions.

[stale]

This issue has been automatically closed because it has not had activity since it was marked as stale. Thank you for your contributions.