blob: cbf3888a4bff70834f2cd94997ad710a6c7f0e3a [file] [log] [blame]
// 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.
import "package:expect/expect.dart";
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);
}
foo2(tag, {a: 10, b: 20}) {
calls += 1;
Validate(tag, a, b);
}
}
class HasField {
int calls;
var foo, foo2;
HasField() {
calls = 0;
foo = makeFoo(this);
foo2 = makeFoo2(this);
}
makeFoo(owner) {
// This function is closed-over 'owner'.
return (tag, [a = 10, b = 20]) {
owner.calls += 1;
Validate(tag, a, b);
};
}
makeFoo2(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 (e) {
threw = true;
}
Expect.isTrue(threw);
}
static testMethodCallSyntax(a) {
a.foo('');
a.foo('a', 111);
a.foo('ab', 111, 222);
a.foo2('a', a: 111);
a.foo2('b', b: 222);
a.foo2('ab', a: 111, b: 222);
a.foo2('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.foo2('c', c: 1)); // Bad name.
Expect.equals(7, a.calls);
}
static testFunctionCallSyntax(a) {
var f = a.foo;
var f2 = a.foo2;
f('');
f('a', 111);
f('ab', 111, 222);
f2('a', a: 111);
f2('b', b: 222);
f2('ab', a: 111, b: 222);
f2('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(() => f2('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();
}