Files
sdk/tests/corelib_strong/hashcode_test.dart
T
Bob Nystrom 6c757957db Move the dev_compiler strong mode tests into sdk/tests/.
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.
2016-12-09 11:09:55 -08:00

49 lines
1.4 KiB
Dart

// Copyright (c) 2013, 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.
import "package:expect/expect.dart";
class Override {
int hash;
int get superHash => super.hashCode;
int get hashCode => hash;
int foo() => hash; // Just some function that can be closurized.
bool operator==(Object other) =>
other is Override && (other as Override).hash == hash;
}
int bar() => 42; // Some global function.
main() {
var o = new Object();
var hash = o.hashCode;
// Doesn't change.
Expect.equals(hash, o.hashCode);
Expect.equals(hash, identityHashCode(o));
var c = new Override();
int identityHash = c.superHash;
hash = (identityHash == 42) ? 37 : 42;
c.hash = hash;
Expect.equals(hash, c.hashCode);
Expect.equals(identityHash, identityHashCode(c));
// These classes don't override hashCode.
var samples = [0, 0x10000000, 1.5, -0, null, true, false, const Object()];
for (var v in samples) {
print(v);
Expect.equals(v.hashCode, identityHashCode(v));
}
// These do, or might do, but we can still use hashCodeOf and get the same
// result each time.
samples = ["string", "", (x) => 42, c.foo, bar];
for (var v in samples) {
print(v);
Expect.equals(v.hashCode, v.hashCode);
Expect.equals(identityHashCode(v), identityHashCode(v));
}
}