public function testCollectFirstErrorsOnly()
{
$data = ["key" => ""];
// collect the first errors only
$v = new Validator($data);
$v->stopOnError(true);
$v->rule("required", ["key"])->message("is_required");
$v->rule("equals", "key", "expected_value")->message("is_not_equals");
$res = $v->validate();
$errors = $v->errors();
$this->assertEquals(1, count($errors["key"]), "it must contains only the first error");
$this->assertEquals("is_required", $errors["key"][0], "it must contains 'is_not_equals' message");
// collect all errors
$v = new Validator($data);
$v->stopOnError(false);
// it is FALSE by default
$v->rule("required", ["key"])->message("is_required");
$v->rule("equals", "key", "expected_value")->message("is_not_equals");
$res = $v->validate();
$errors = $v->errors();
$this->assertEquals(2, count($errors["key"]), "it must contains only the first error");
$this->assertEquals("is_required", $errors["key"][0], "it must contains 'is_required' message");
$this->assertEquals("is_not_equals", $errors["key"][1], "it must contains 'is_not_equals' message");
$this->assertFalse($res);
}