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.
65 lines
2.6 KiB
Dart
65 lines
2.6 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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// Verify semantics of the ?. operator when it is used to invoke a method.
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import "package:expect/expect.dart";
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import "conditional_access_helper.dart" as h;
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bad() {
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Expect.fail('Should not be executed');
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}
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noMethod(e) => e is NoSuchMethodError;
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class B {}
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class C extends B {
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f(callback()) => callback();
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int g(int callback()) => callback();
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static staticF(callback()) => callback();
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static int staticG(int callback()) => callback();
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}
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C nullC() => null;
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main() {
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// Make sure the "none" test fails if method invocation using "?." is not
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// implemented. This makes status files easier to maintain.
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nullC()?.f(null);
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// o?.m(...) is equivalent to ((x) => x == null ? null : x.m(...))(o).
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Expect.equals(null, nullC()?.f(bad())); /// 01: ok
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Expect.equals(1, new C()?.f(() => 1)); /// 02: ok
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// C?.m(...) is equivalent to C.m(...).
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Expect.equals(1, C?.staticF(() => 1)); /// 14: ok
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Expect.equals(1, h.C?.staticF(() => 1)); /// 15: ok
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// The static type of o?.m(...) is the same as the static type of
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// o.m(...).
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{ int i = nullC()?.g(bad()); Expect.equals(null, i); } /// 03: ok
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{ int i = new C()?.g(() => 1); Expect.equals(1, i); } /// 04: ok
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{ String s = nullC()?.g(bad()); Expect.equals(null, s); } /// 05: static type warning
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{ String s = new C()?.g(() => null); Expect.equals(null, s); } /// 06: static type warning
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{ int i = C?.staticG(() => 1); Expect.equals(1, i); } /// 16: ok
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{ int i = h.C?.staticG(() => 1); Expect.equals(1, i); } /// 17: ok
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{ String s = C?.staticG(() => null); Expect.equals(null, s); } /// 18: static type warning
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{ String s = h.C?.staticG(() => null); Expect.equals(null, s); } /// 19: static type warning
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// Let T be the static type of o and let y be a fresh variable of type T.
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// Exactly the same static warnings that would be caused by y.m(...) are also
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// generated in the case of o?.m(...).
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{ B b = new C(); Expect.equals(1, b?.f(() => 1)); } /// 07: static type warning
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{ int i = 1; Expect.equals(null, nullC()?.f(i)); } /// 08: static type warning
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// '?.' can't be used to access toplevel functions in libraries imported via
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// prefix.
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h?.topLevelFunction(); /// 11: compile-time error
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// Nor can it be used to access the toString method on the class Type.
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Expect.throws(() => C?.toString(), noMethod); /// 12: static type warning
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Expect.throws(() => h.C?.toString(), noMethod); /// 13: static type warning
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}
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