test rename overhaul: step 8 - language tests

tests/language/src/NamedParametersWithConversionsTest.dart

-// 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.
-//
-// Test named arguments work as expected regardless of whether the function or
-// method is called via function call syntax or method call syntax.
-
-
-Validate(tag, a, b) {
-  // tag encodes which parameters are passed in with values a: 111, b: 222.
-  if (tag == 'ab') {
-    Expect.equals(a, 111);
-    Expect.equals(b, 222);
-  }
-  if (tag == 'a') {
-    Expect.equals(a, 111);
-    Expect.equals(b, 20);
-  }
-  if (tag == 'b') {
-    Expect.equals(a, 10);
-    Expect.equals(b, 222);
-  }
-  if (tag == '') {
-    Expect.equals(a, 10);
-    Expect.equals(b, 20);
-  }
-}
-
-class HasMethod {
-
-  int calls;
-
-  HasMethod() : calls = 0 {}
-
-  foo(tag, [a = 10, b = 20]) {
-    calls += 1;
-    Validate(tag, a, b);
-  }
-}
-
-class HasField {
-
-  int calls;
-  var foo;
-
-  HasField() {
-    calls = 0;
-    foo = makeFoo(this);
-  }
-
-  makeFoo(owner) {
-    // This function is closed-over 'owner'.
-    return (tag, [a = 10, b = 20]) {
-      owner.calls += 1;
-      Validate(tag, a, b);
-    };
-  }
-}
-
-
-class NamedParametersWithConversionsTest {
-
-  static checkException(thunk) {
-    bool threw = false;
-    try {
-      thunk();
-    } catch (var e) {
-      threw = true;
-    }
-    Expect.isTrue(threw);
-  }
-
-  static testMethodCallSyntax(a) {
-    a.foo('');
-    a.foo('a', 111);
-    a.foo('ab', 111, 222);
-    a.foo('a', a: 111);
-    a.foo('b', b: 222);
-    a.foo('ab', a: 111, b: 222);
-    a.foo('ab', b: 222, a: 111);
-
-    Expect.equals(7, a.calls);
-
-    checkException(() => a.foo());                 // Too few arguments.
-    checkException(() => a.foo('abc', 1, 2, 3));   // Too many arguments.
-    checkException(() => a.foo('c', c: 1));        // Bad name.
-
-    Expect.equals(7, a.calls);
-  }
-
-  static testFunctionCallSyntax(a) {
-    var f = a.foo;
-    f('');
-    f('a', 111);
-    f('ab', 111, 222);
-    f('a', a: 111);
-    f('b', b: 222);
-    f('ab', a: 111, b: 222);
-    f('ab', b: 222, a: 111);
-
-    Expect.equals(7, a.calls);
-
-    checkException(() => f());                 // Too few arguments.
-    checkException(() => f('abc', 1, 2, 3));   // Too many arguments.
-    checkException(() => f('c', c: 1));        // Bad name.
-
-    Expect.equals(7, a.calls);
-  }
-
-  static testMain() {
-    // 'Plain' calls where the method/field syntax matches the object.
-    testMethodCallSyntax(new HasMethod());
-    testFunctionCallSyntax(new HasField());
-
-    // 'Conversion' calls where method/field call syntax does not match the
-    // object.
-    testMethodCallSyntax(new HasField());
-    testFunctionCallSyntax(new HasMethod());
-  }
-}
-
-main() {
-  NamedParametersWithConversionsTest.testMain();
-}