Files
sdk/samples/sample_extension/test_sample_synchronous_extension.dart
T
Alexander Markov 91b0f16663 Migrate samples/sample_extension to null safety
Closes https://github.com/dart-lang/sdk/issues/43711

Change-Id: I7628e4a6192efb26a12f8051b4fa87dfafabab9c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/180960
Reviewed-by: Régis Crelier <regis@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
2021-01-25 20:06:43 +00:00

55 lines
1.7 KiB
Dart

// Copyright (c) 2012, 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.
library test_sample_extension;
import 'sample_synchronous_extension.dart';
void check(bool condition, String message) {
if (!condition) {
throw new StateError(message);
}
}
void checkSystemRand() {
systemSrand(17);
var x1 = systemRand();
var x2 = systemRand();
var x3 = systemRand();
check(x1 != x2, "x1 != x2");
check(x1 != x3, "x1 != x3");
check(x2 != x3, "x2 != x3");
systemSrand(17);
check(x1 == systemRand(), "x1 == systemRand()");
check(x2 == systemRand(), "x2 == systemRand()");
check(x3 == systemRand(), "x3 == systemRand()");
systemSrand(18);
check(x1 != systemRand(), "x1 != systemRand()");
check(x2 != systemRand(), "x2 != systemRand()");
check(x3 != systemRand(), "x3 != systemRand()");
}
void checkNoScopeSystemRand() {
systemSrand(17);
var x1 = noScopeSystemRand();
var x2 = noScopeSystemRand();
var x3 = noScopeSystemRand();
check(x1 != x2, "x1 != x2");
check(x1 != x3, "x1 != x3");
check(x2 != x3, "x2 != x3");
systemSrand(17);
check(x1 == noScopeSystemRand(), "x1 == noScopeSystemRand()");
check(x2 == noScopeSystemRand(), "x2 == noScopeSystemRand()");
check(x3 == noScopeSystemRand(), "x3 == noScopeSystemRand()");
systemSrand(18);
check(x1 != noScopeSystemRand(), "x1 != noScopeSystemRand()");
check(x2 != noScopeSystemRand(), "x2 != noScopeSystemRand()");
check(x3 != noScopeSystemRand(), "x3 != noScopeSystemRand()");
}
void main() {
checkSystemRand();
checkNoScopeSystemRand();
}