blob: 6175790728d4f52044b7d9393c86ba1d2e2ea0c4 [file] [log] [blame]
// Copyright (c) 2019, 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.
class Class1 {
int field;
Class1(this.field);
String toString() => 'Class1($field)';
}
class Class2 {
int field;
Class2(this.field);
String toString() => 'Class2($field)';
}
extension Extension1 on Class1 {
int method() {
print('Extension1.method on $this');
return field;
}
num genericMethod<T extends num>(T t) {
print('Extension1.genericMethod<$T>($t) on $this');
return field + t;
}
}
extension Extension2 on Class2 {
int method() {
print('Extension2.method on $this');
return field + 2;
}
num genericMethod<T extends num>(T t) {
print('Extension2.genericMethod<$T>($t) on $this');
return field + t + 3;
}
}
main() {
testExtension1();
testExtension2();
}
testExtension1() {
Class1 c0 = new Class1(0);
Class1 c1 = new Class1(1);
var tearOff0 = c0.method;
expect(0, tearOff0());
c0 = new Class1(-4);
expect(0, tearOff0());
var tearOff1 = c1.method;
expect(1, tearOff1());
c1 = new Class1(-7);
expect(1, tearOff1());
var genericTearOff0 = c0.genericMethod;
expect(38, genericTearOff0(42));
expect(38, genericTearOff0<num>(42));
var genericTearOff1 = c1.genericMethod;
expect(35, genericTearOff1(42));
expect(35, genericTearOff1<num>(42));
}
testExtension2() {
Class2 c0 = new Class2(0);
Class2 c1 = new Class2(1);
var tearOff0 = c0.method;
expect(2, tearOff0());
c0 = new Class2(-4);
expect(2, tearOff0());
var tearOff1 = c1.method;
expect(3, tearOff1());
c1 = new Class2(-7);
expect(3, tearOff1());
var genericTearOff0 = c0.genericMethod;
expect(41, genericTearOff0(42));
expect(41, genericTearOff0<num>(42));
var genericTearOff1 = c1.genericMethod;
expect(38, genericTearOff1(42));
expect(38, genericTearOff1<num>(42));
}
expect(expected, actual) {
if (expected != actual) {
throw 'Mismatch: expected=$expected, actual=$actual';
}
}