mirror of
https://github.com/dart-lang/sdk
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b101a7d002
Change-Id: Ib33169c3e0ffc870915c189404074a1dea472546 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196548 Reviewed-by: Bob Nystrom <rnystrom@google.com> Commit-Queue: Leaf Petersen <leafp@google.com>
119 lines
2.7 KiB
Dart
119 lines
2.7 KiB
Dart
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// @dart = 2.9
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import "package:expect/expect.dart";
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// Tests basic expressions. Does not attempt to validate the details of arithmetic, coercion, and
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// so forth.
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class ExpressionTest {
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ExpressionTest() {}
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int foo;
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static testMain() {
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var test = new ExpressionTest();
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test.testBinary();
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test.testUnary();
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test.testShifts();
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test.testBitwise();
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test.testIncrement();
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test.testMangling();
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}
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testBinary() {
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int x = 4, y = 2;
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Expect.equals(6, x + y);
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Expect.equals(2, x - y);
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Expect.equals(8, x * y);
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Expect.equals(2, x / y);
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Expect.equals(0, x % y);
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}
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testUnary() {
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int x = 4, y = 2, z = -5;
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bool t = true, f = false;
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Expect.equals(-4, -x);
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Expect.equals(4, ~z);
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Expect.equals(f, !t);
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}
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testShifts() {
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int x = 4, y = 2;
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Expect.equals(y, x >> 1);
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Expect.equals(x, y << 1);
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}
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testBitwise() {
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int x = 4, y = 2;
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Expect.equals(6, (x | y));
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Expect.equals(0, (x & y));
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Expect.equals(6, (x ^ y));
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}
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operator [](int index) {
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return foo;
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}
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operator []=(int index, int value) {
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foo = value;
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}
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testIncrement() {
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int x = 4, a = x++;
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Expect.equals(4, a);
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Expect.equals(5, x);
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Expect.equals(6, ++x);
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Expect.equals(6, x++);
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Expect.equals(7, x);
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Expect.equals(6, --x);
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Expect.equals(6, x--);
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Expect.equals(5, x);
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this.foo = 0;
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Expect.equals(0, this.foo++);
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Expect.equals(1, this.foo);
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Expect.equals(2, ++this.foo);
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Expect.equals(2, this.foo);
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Expect.equals(2, this.foo--);
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Expect.equals(1, this.foo);
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Expect.equals(0, --this.foo);
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Expect.equals(0, this.foo);
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Expect.equals(0, this[0]++);
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Expect.equals(1, this[0]);
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Expect.equals(2, ++this[0]);
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Expect.equals(2, this[0]);
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Expect.equals(2, this[0]--);
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Expect.equals(1, this[0]);
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Expect.equals(0, --this[0]);
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Expect.equals(0, this[0]);
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int $0 = 42, $1 = 87, $2 = 117;
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Expect.equals(42, $0++);
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Expect.equals(43, $0);
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Expect.equals(44, ++$0);
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Expect.equals(88, $0 += $0);
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Expect.equals(87, $1++);
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Expect.equals(88, $1);
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Expect.equals(89, ++$1);
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Expect.equals(178, ($1 += $1));
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Expect.equals(117, $2++);
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Expect.equals(118, $2);
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Expect.equals(119, ++$2);
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}
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void testMangling() {
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int $0 = 42, $1 = 87, $2 = 117;
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this[0] = 0;
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Expect.equals(42, (this[0] += $0));
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Expect.equals(129, (this[0] += $1));
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Expect.equals(246, (this[0] += $2));
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}
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}
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main() {
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ExpressionTest.testMain();
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}
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