Bob Nystrom
6c757957db
DDC's codegen test copies those files to a local "gen" directory so that it can do stuff like splitting out the multitests before it compiles them to JS. I left all of that alone, so the rest of DDC's test infrastructure is unchanged. The very first step that builds the "gen" directory just copies from sdk/tests/..._strong/... instead and the rest is good to go. I did not move not_yet_strong_tests.dart somewhere more accessible yet because I'm not sure if kernel needs it or where it should go. I did not create any status files because DDC doesn't need them and there are no test suites for the new directories for the other platforms.
63 lines
1.7 KiB
Dart
63 lines
1.7 KiB
Dart
// Copyright (c) 2015, 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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// Test that the secure random generator does not systematically generates
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// duplicates. Note that this test is flaky by definition, since duplicates
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// can occur. They should be extremely rare, though.
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// Library tag to allow Dartium to run the test.
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library random_secure;
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import "package:expect/expect.dart";
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import 'dart:math';
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main() {
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var results;
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var rng0;
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var rng1;
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var checkInt = (max) {
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var intVal0 = rng0.nextInt(max);
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var intVal1 = rng1.nextInt(max);
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if (max > (1 << 28)) {
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Expect.isFalse(results.contains(intVal0));
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results.add(intVal0);
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Expect.isFalse(results.contains(intVal1));
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results.add(intVal1);
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}
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};
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results = [];
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rng0 = new Random.secure();
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for(var i = 0; i <= 32; i++) {
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rng1 = new Random.secure();
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checkInt(pow(2, 32));
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checkInt(pow(2, 32 - i));
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checkInt(1000000000);
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}
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var checkDouble = () {
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var doubleVal0 = rng0.nextDouble();
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var doubleVal1 = rng1.nextDouble();
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Expect.isFalse(results.contains(doubleVal0));
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results.add(doubleVal0);
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Expect.isFalse(results.contains(doubleVal1));
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results.add(doubleVal1);
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};
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results = [];
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rng0 = new Random.secure();
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for(var i = 0; i < 32; i++) {
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rng1 = new Random.secure();
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checkDouble();
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}
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var cnt0 = 0;
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var cnt1 = 0;
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rng0 = new Random.secure();
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for(var i = 0; i < 32; i++) {
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rng1 = new Random.secure();
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cnt0 += rng0.nextBool() ? 1 : 0;
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cnt1 += rng1.nextBool() ? 1 : 0;
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}
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Expect.isTrue((cnt0 > 0) && (cnt0 < 32));
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Expect.isTrue((cnt1 > 0) && (cnt1 < 32));
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}
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