Redaxscript\Tests\SingletonTest::testClearInstance PHP Method

    public function testClearInstance()
    {
        /* setup */
        $stub = $this->getMockBuilder('Redaxscript\\Singleton')->disableOriginalConstructor()->getMockForAbstractClass();
        $stub->clearInstance();
        /* actual */
        $actual = $stub->getInstance();
        /* compare */
        $this->assertNull($actual);
    }