luyatests\core\helpers\StringHelperTest::testReplaceFirst PHP Method

    public function testReplaceFirst()
    {
        $this->assertSame('abc 123 123', StringHelper::replaceFirst('123', 'abc', '123 123 123'));
        $this->assertSame('abc 123 ABC', StringHelper::replaceFirst('ABC', '123', 'abc ABC ABC'));
    }