| Index: tests/language/precedence_test.dart
|
| diff --git a/tests/language/precedence_test.dart b/tests/language/precedence_test.dart
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..21ce048a7ef232835bf6c225ef8636a145bb2ea1
|
| --- /dev/null
|
| +++ b/tests/language/precedence_test.dart
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| @@ -0,0 +1,179 @@
|
| +// Copyright (c) 2017, 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 to test operation precedence.
|
| +
|
| +library precedence_test;
|
| +import "package:expect/expect.dart";
|
| +
|
| +main() {
|
| + testBang();
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| + testIndexWithPrefixAdd();
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| + testIndexWithPostfixAdd();
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| + testTilde();
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| + testUnaryPrefixWithAdd();
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| + testUnaryPostfixWithAdd();
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| + testUnaryPrefixWithMultiply();
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| + testUnaryPostfixWithMultiply();
|
| +}
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| +
|
| +void testBang() {
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| + int x = 3;
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| +
|
| + Expect.equals(!true == false, true);
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| + Expect.equals(!x.isEven, true);
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| + Expect.equals(!(++x).isEven, false);
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| + Expect.equals(x, 4);
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| + Expect.equals(!(x++).isEven, false);
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| + Expect.equals(x, 5);
|
| +}
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| +
|
| +void testIndexWithPrefixAdd() {
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| + var x = <int>[3];
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| +
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| + Expect.equals(++x[0] + 3, 7);
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| + Expect.equals(x[0], 4);
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| + Expect.equals(++x[0] - 3, 2);
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| + Expect.equals(x[0], 5);
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| + Expect.equals(--x[0] + 4, 8);
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| + Expect.equals(x[0], 4);
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| + Expect.equals(--x[0] - 4, -1);
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| + Expect.equals(x[0], 3);
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| +
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| + Expect.equals(3 + ++x[0], 7);
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| + Expect.equals(x[0], 4);
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| + Expect.equals(3 - ++x[0], -2);
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| + Expect.equals(x[0], 5);
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| + Expect.equals(4 + --x[0], 8);
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| + Expect.equals(x[0], 4);
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| + Expect.equals(4 - --x[0], 1);
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| + Expect.equals(x[0], 3);
|
| +}
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| +
|
| +void testIndexWithPostfixAdd() {
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| + var x = <int>[3];
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| +
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| + Expect.equals(x[0]++ + 3, 6);
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| + Expect.equals(x[0], 4);
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| + Expect.equals(x[0]++ - 3, 1);
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| + Expect.equals(x[0], 5);
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| + Expect.equals(x[0]-- + 4, 9);
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| + Expect.equals(x[0], 4);
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| + Expect.equals(x[0]-- - 4, 0);
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| + Expect.equals(x[0], 3);
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| +
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| + Expect.equals(3 + x[0]++, 6);
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| + Expect.equals(x[0], 4);
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| + Expect.equals(3 - x[0]++, -1);
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| + Expect.equals(x[0], 5);
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| + Expect.equals(4 + x[0]--, 9);
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| + Expect.equals(x[0], 4);
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| + Expect.equals(4 - x[0]--, 0);
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| + Expect.equals(x[0], 3);
|
| +}
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| +
|
| +void testTilde() {
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| + int x = 3;
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| +
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| + Expect.equals(~x.sign, ~(x.sign));
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| + Expect.equals(~x + 7, (~3) + 7);
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| +
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| + Expect.equals(~++x + 7, (~4) + 7);
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| + Expect.equals(x, 4);
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| + Expect.equals(~x++ + 7, (~4) + 7);
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| + Expect.equals(x, 5);
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| +
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| + Expect.equals(~--x + 7, (~4) + 7);
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| + Expect.equals(x, 4);
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| + Expect.equals(~x-- + 7, (~4) + 7);
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| + Expect.equals(x, 3);
|
| +}
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| +
|
| +void testUnaryPrefixWithAdd() {
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| + int x = 3;
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| +
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| + Expect.equals(++x + 3, 7);
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| + Expect.equals(x, 4);
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| + Expect.equals(++x - 3, 2);
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| + Expect.equals(x, 5);
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| + Expect.equals(--x + 4, 8);
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| + Expect.equals(x, 4);
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| + Expect.equals(--x - 4, -1);
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| + Expect.equals(x, 3);
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| +
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| + Expect.equals(3 + ++x, 7);
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| + Expect.equals(x, 4);
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| + Expect.equals(3 - ++x, -2);
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| + Expect.equals(x, 5);
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| + Expect.equals(4 + --x, 8);
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| + Expect.equals(x, 4);
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| + Expect.equals(4 - --x, 1);
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| + Expect.equals(x, 3);
|
| +}
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| +
|
| +void testUnaryPostfixWithAdd() {
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| + int x = 3;
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| +
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| + Expect.equals(x++ + 3, 6);
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| + Expect.equals(x, 4);
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| + Expect.equals(x++ - 3, 1);
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| + Expect.equals(x, 5);
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| + Expect.equals(x-- + 4, 9);
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| + Expect.equals(x, 4);
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| + Expect.equals(x-- - 4, 0);
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| + Expect.equals(x, 3);
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| +
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| + Expect.equals(3 + x++, 6);
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| + Expect.equals(x, 4);
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| + Expect.equals(3 - x++, -1);
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| + Expect.equals(x, 5);
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| + Expect.equals(4 + x--, 9);
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| + Expect.equals(x, 4);
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| + Expect.equals(4 - x--, 0);
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| + Expect.equals(x, 3);
|
| +}
|
| +
|
| +void testUnaryPrefixWithMultiply() {
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| + int x = 3;
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| +
|
| + Expect.equals(++x * 3, 12);
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| + Expect.equals(x, 4);
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| + Expect.equals(++x / 5, 1.0);
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| + Expect.equals(x, 5);
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| + Expect.equals(--x * 3, 12);
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| + Expect.equals(x, 4);
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| + Expect.equals(--x / 4, 0.75);
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| + Expect.equals(x, 3);
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| +
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| + Expect.equals(3 * ++x, 12);
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| + Expect.equals(x, 4);
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| + Expect.equals(5 / ++x, 1.0);
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| + Expect.equals(x, 5);
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| + Expect.equals(3 * --x, 12);
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| + Expect.equals(x, 4);
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| + Expect.equals(6 / --x, 2.0);
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| + Expect.equals(x, 3);
|
| +}
|
| +
|
| +void testUnaryPostfixWithMultiply() {
|
| + int x = 3;
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| +
|
| + Expect.equals(x++ * 3, 9);
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| + Expect.equals(x, 4);
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| + Expect.equals(x++ / 4, 1.0);
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| + Expect.equals(x, 5);
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| + Expect.equals(x-- * 3, 15);
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| + Expect.equals(x, 4);
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| + Expect.equals(x-- / 4, 1.0);
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| + Expect.equals(x, 3);
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| +
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| + Expect.equals(3 * x++, 9);
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| + Expect.equals(x, 4);
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| + Expect.equals(3 / x++, 0.75);
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| + Expect.equals(x, 5);
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| + Expect.equals(4 * x--, 20);
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| + Expect.equals(x, 4);
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| + Expect.equals(4 / x--, 1.0);
|
| + Expect.equals(x, 3);
|
| +}
|
| +
|
|
|