blob: 2f075a107fd862232ecec8f12b86a8c1a7f16c01 [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.
// Dart test program for testing function type parameters.
import "package:expect/expect.dart";
class Param2Test {
static forEach(List<int> a, int f(int k)) {
for (int i = 0; i < a.length; i++) {
a[i] = f(a[i]);
}
}
static int apply(f(int k), int arg) {
var res = f(arg);
return res;
}
static exists(List<int> a, f(e)) {
for (int i = 0; i < a.length; i++) {
if (f(a[i])) return true;
}
return false;
}
static testMain() {
int square(int x) {
return x * x;
}
Expect.equals(4, apply(square, 2));
Expect.equals(100, apply(square, 10));
var v = [1, 2, 3, 4, 5, 6];
forEach(v, square);
Expect.equals(1, v[0]);
Expect.equals(4, v[1]);
Expect.equals(9, v[2]);
Expect.equals(16, v[3]);
Expect.equals(25, v[4]);
Expect.equals(36, v[5]);
isOdd(element) {
return element % 2 == 1;
}
Expect.equals(true, exists([3, 5, 7, 11, 13], isOdd));
Expect.equals(false, exists([2, 4, 10], isOdd));
Expect.equals(false, exists([], isOdd));
v = [4, 5, 7];
Expect.equals(true, exists(v, (e) => e % 2 == 1));
Expect.equals(false, exists(v, (e) => e == 6));
var isZero = (e) => e == 0;
Expect.equals(false, exists(v, isZero));
}
}
main() {
Param2Test.testMain();
}