dart-sdk/tests/language/try_catch_on_syntax_test.dart
Erik Ernst 40b6741778 Adds support for syntax error in tests to test.py.
This CL modifies the Dart source used from test.py such that it takes
`syntax error` into account as an expected outcome in test files (so
that we can have `//# 01: syntax error` with a similar meaning as
`//# 01: compile-time error`).

For all tools except the spec_parser, `syntax error` is the same
outcome as `compile-time error`; that is, nobody else will see the
difference.

For the spec_parser, `syntax error` is the outcome where parsing has
failed; `compile-time error` is taken to mean some other compile-time
error, i.e., the spec_parser is expected to _succeed_ when the
expected outcome is `compile-time error`.

Test files in language and language_2 have been adjusted to use the
outcome `syntax error` where appropriate.

The status files in language and language_2 for the spec_parser have
been adjusted such that they fit all the new `syntax error` outcomes
in test files.

Other status files have been adjusted in a few cases where tests were
corrected (because a compile-time error which was clearly not intended
to be a syntax error turned out to be caused by a typo, which means
that the actual compile-time error has never been tested).

The spec grammar Dart.g was adjusted in a few cases, when some bugs
were discovered. In particular, the treatment of Function has been
changed: It is now known by the parser that Function does not take
any type arguments. This makes no difference for developers, because
they cannot declare a type named Function anyway, but it means that
a number of tricky parsing issues were resolved.

Dart.g was also adjusted to allow `qualified` to contain three
identifiers, which is an old bug (preventing things like metadata on
the form `@p.C.myConst`).

Change-Id: Ie420887d45c882ef97c84143365219f8aa0d2933
Reviewed-on: https://dart-review.googlesource.com/18262
Commit-Queue: Erik Ernst <eernst@google.com>
Reviewed-by: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>
2017-11-06 08:56:09 +00:00

51 lines
1.2 KiB
Dart

// Copyright (c) 2011, 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 MyException {}
class MyException1 extends MyException {}
class MyException2 extends MyException {}
void test1() {
var foo = 0;
try {
throw new MyException1();
}
on on MyException2 catch (e) { } //# 02: syntax error
catch MyException2 catch (e) { } //# 03: syntax error
catch catch catch (e) { } //# 04: syntax error
on (e) { } //# 05: syntax error
catch MyException2 catch (e) { } //# 06: syntax error
on MyException2 catch (e) {
foo = 1;
} on MyException1 catch (e) {
foo = 2;
} on MyException catch (e) {
foo = 3;
}
on UndefinedClass //# 07: static type warning
catch (e) {
foo = 4;
}
Expect.equals(2, foo);
}
testFinal() {
try {
throw "catch this!";
} catch (e, s) {
// Test that the error and stack trace variables are final.
e = null; // //# 10: runtime error
s = null; // //# 11: runtime error
}
}
main() {
test1();
testFinal();
}