NsplTest\FTest::testCurried PHP Метод

    public function testCurried()
    {
        $curriedStrReplace = curried('str_replace');
        $replaceUnderscores = $curriedStrReplace('_');
        $replaceUnderscoresWithSpaces = $replaceUnderscores(' ');
        $this->assertEquals('Hello world!', $replaceUnderscoresWithSpaces('Hello_world!'));
        $f = function ($a, $b, $c = 'c') {
            return join('', func_get_args());
        };
        $curriedF = curried($f);
        $f1 = $curriedF('a');
        $this->assertEquals('ab', $f1('b'));
        $curriedFWithOptinalArgs = curried($f, true);
        $f1 = $curriedFWithOptinalArgs('a');
        $f2 = $f1('b');
        $this->assertEquals('abc', $f2('c'));
        $curriedFWithFourArgs = curried($f, 4);
        $f1 = $curriedFWithFourArgs('a');
        $f2 = $f1('b');
        $f3 = $f2('c');
        $this->assertEquals('abcd', $f3('d'));
    }