Ouzo\Utilities\FunctionsTest::shouldComposeFunctions PHP Method

    public function shouldComposeFunctions()
    {
        //given
        $functionA = Functions::trim();
        $functionB = Functions::append('a ');
        //when
        $result = Functions::call(Functions::compose($functionA, $functionB), ' ');
        //then
        $this->assertEquals('a', $result);
    }