Tests for passing falsy values to named arguments.

Fixes type error in previous version.

BUG=3530015
TEST=

Review URL: https://chromereviews.googleplex.com/3561022

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@260 260f80e4-7a28-3924-810f-c04153c831b5

tests/language/language.status

@@ -78,6 +78,10 @@ NamedParameters2NegativeTest: Fail   # Implementation in progress.
 NamedParameters3NegativeTest: Fail   # Implementation in progress.
 NamedParameters4NegativeTest: Fail   # Implementation in progress.
 NamedParameters6NegativeTest: Crash  # Implementation in progress.
+NamedParametersPassingZeroTest: Fail # Bug
+NamedParametersPassingNullTest: Fail # Bug
+NamedParametersPassingFalseTest: Fail # Bug
+NamedParametersPassingFalsyTest: Fail # Bug
 InstFieldInitializerTest: Fail       # Cannot deal with static final values in const expression.
 RegExp3Test: Fail                    # 5299683
 InterfaceFactory3NegativeTest: Fail  # 5387405

tests/language/src/NamedParametersPassingFalseTest.dart

@@ -0,0 +1,40 @@
+// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+// Dart test program for testing named parameters with 'false' passed as an
+// argument.
+
+
+class TestClass {
+  TestClass();
+
+  bool method([bool value]) => value;
+
+  static bool staticMethod([bool value]) => value;
+}
+
+bool globalMethod([bool value]) => value;
+
+
+main() {
+  var obj = new TestClass();
+
+  Expect.equals(null, obj.method());
+  Expect.equals(true, obj.method(true));
+  Expect.equals(true, obj.method(value: true));
+  Expect.equals(false, obj.method(false));
+  Expect.equals(false, obj.method(value: false));
+
+  Expect.equals(null, TestClass.staticMethod());
+  Expect.equals(true, TestClass.staticMethod(true));
+  Expect.equals(true, TestClass.staticMethod(value: true));
+  Expect.equals(false, TestClass.staticMethod(false));
+  Expect.equals(false, TestClass.staticMethod(value: false));
+
+  Expect.equals(null, globalMethod());
+  Expect.equals(true, globalMethod(true));
+  Expect.equals(true, globalMethod(value: true));
+  Expect.equals(false, globalMethod(false));
+  Expect.equals(false, globalMethod(value: false));
+}

tests/language/src/NamedParametersPassingFalsyTest.dart

@@ -0,0 +1,49 @@
+// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+// Dart test program for testing named parameters with various values that might
+// be implemented as 'falsy' values in a JavaScript implementation.
+
+
+class TestClass {
+  TestClass();
+
+  method([value = 100]) => value;
+
+  static staticMethod([value = 200]) => value;
+}
+
+globalMethod([value = 300]) => value;
+
+final testValues = const [0, 0.0, '', false, null];
+
+testFunction(f) {
+  Expect.isTrue(f() >= 100);
+  for (var v in testValues) {
+    Expect.equals(v, f(v));
+    Expect.equals(v, f(value: v));
+  }
+}
+
+main() {
+  var obj = new TestClass();
+
+  Expect.equals(100, obj.method());
+  Expect.equals(200, TestClass.staticMethod());
+  Expect.equals(300, globalMethod());
+
+  for (var v in testValues) {
+    Expect.equals(v, obj.method(v));
+    Expect.equals(v, obj.method(value: v));
+    Expect.equals(v, TestClass.staticMethod(v));
+    Expect.equals(v, TestClass.staticMethod(value: v));
+    Expect.equals(v, globalMethod(v));
+    Expect.equals(v, globalMethod(value: v));
+  }
+
+  // Test via indirect call.
+  testFunction(obj.method);
+  testFunction(TestClass.staticMethod);
+  testFunction(globalMethod);
+}

tests/language/src/NamedParametersPassingNullTest.dart

@@ -0,0 +1,40 @@
+// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+// Dart test program for testing named parameters with 'null' passed as an
+// argument.
+
+
+class TestClass {
+  TestClass();
+
+  num method([value = 100]) => value;
+
+  static num staticMethod([value = 200]) => value;
+}
+
+num globalMethod([value = 300]) => value;
+
+
+main() {
+  var obj = new TestClass();
+
+  Expect.equals(100, obj.method());
+  Expect.equals(50, obj.method(50));
+  Expect.equals(50, obj.method(value: 50));
+  Expect.equals(null, obj.method(null));
+  Expect.equals(null, obj.method(value: null));
+
+  Expect.equals(200, TestClass.staticMethod());
+  Expect.equals(50, TestClass.staticMethod(50));
+  Expect.equals(50, TestClass.staticMethod(value: 50));
+  Expect.equals(null, TestClass.staticMethod(null));
+  Expect.equals(null, TestClass.staticMethod(value: null));
+
+  Expect.equals(300, globalMethod());
+  Expect.equals(50, globalMethod(50));
+  Expect.equals(50, globalMethod(value: 50));
+  Expect.equals(null, globalMethod(null));
+  Expect.equals(null, globalMethod(value: null));
+}

tests/language/src/NamedParametersPassingZeroTest.dart

@@ -0,0 +1,40 @@
+// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+// Dart test program for testing named parameters with zero passed as an
+// argument.
+
+
+class TestClass {
+  TestClass();
+
+  num method([num value = 100]) => value;
+
+  static num staticMethod([num value = 200]) => value;
+}
+
+num globalMethod([num value = 300]) => value;
+
+
+main() {
+  var obj = new TestClass();
+
+  Expect.equals(100, obj.method());
+  Expect.equals(7, obj.method(7));
+  Expect.equals(7, obj.method(value: 7));
+  Expect.equals(0, obj.method(0));
+  Expect.equals(0, obj.method(value: 0));
+
+  Expect.equals(200, TestClass.staticMethod());
+  Expect.equals(7, TestClass.staticMethod(7));
+  Expect.equals(7, TestClass.staticMethod(value: 7));
+  Expect.equals(0, TestClass.staticMethod(0));
+  Expect.equals(0, TestClass.staticMethod(value: 0));
+
+  Expect.equals(300, globalMethod());
+  Expect.equals(7, globalMethod(7));
+  Expect.equals(7, globalMethod(value: 7));
+  Expect.equals(0, globalMethod(0));
+  Expect.equals(0, globalMethod(value: 0));
+}