HaxeCheckstyle/haxe-checkstyle

package checkstyle.checks.coding;

import checkstyle.checks.CheckTestCase;

class NullableParameterCheckTest extends CheckTestCase<NullableParameterCheckTests> {
    @Test
    function testQuestionMark() {
        var check = new NullableParameterCheck();
        check.option = QUESTION_MARK;

        assertNoMsg(check, NO_DEFAULT);
        assertNoMsg(check, DEFAULT);
        assertMsg(check, NULL_DEFAULT, 'Function parameter "arg = null" should be "?arg"');
        assertNoMsg(check, OPTIONAL);
        assertMsg(check, OPTIONAL_WITH_NULL_DEFAULT, 'Function parameter "?arg = null" should be "?arg"');
        assertNoMsg(check, OPTIONAL_WITH_NON_NULL_DEFAULT);
    }

    @Test
    function testNullDefault() {
        var check = new NullableParameterCheck();
        check.option = NULL_DEFAULT;

        assertNoMsg(check, NO_DEFAULT);
        assertNoMsg(check, DEFAULT);
        assertNoMsg(check, NULL_DEFAULT);
        assertMsg(check, OPTIONAL, 'Function parameter "?arg" should be "arg = null"');
        assertMsg(check, OPTIONAL_WITH_NULL_DEFAULT, 'Function parameter "?arg = null" should be "arg = null"');
        assertNoMsg(check, OPTIONAL_WITH_NON_NULL_DEFAULT);
    }
}

enum abstract NullableParameterCheckTests(String) to String {
    var NO_DEFAULT = "
    class Test {
        function foo(arg:Int) {}
    }";
    var DEFAULT = "
    class Test {
        function foo(arg:Int = 0) {}
    }";
    var NULL_DEFAULT = "
    class Test {
        function foo(arg:Int = null) {}
    }";
    var OPTIONAL = "
    class Test {
        function foo(?arg:Int) {}
    }";
    var OPTIONAL_WITH_NULL_DEFAULT = "
    class Test {
        function foo(?arg:Int = null) {}
    }";
    var OPTIONAL_WITH_NON_NULL_DEFAULT = "
    class Test {
        function foo(?arg:Int = 0) {}
    }";
}