Use dedicated PHPUnit assertions

[carusogabriel]

No description provided.

[ntzm]

Would be better to add this logic to PhpUnitDedicateAssertFixer

[SpacePossum]

the first proposed change weakens the tests, for example;

    public function testABC()
    {
        $a = 'abc';
        $this->assertContains('a', $a);
        $this->assertTrue(\in_array('a', $a, true));
    }

first passes, second fails

[carusogabriel]

@SpacePossum Thanks for that. I'll follow what @ntzm said and improve our Fixers to automatically fix them