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packages/stack_trace/test/frame_test.dart

Index: packages/stack_trace/test/frame_test.dart
diff --git a/packages/stack_trace/test/frame_test.dart b/packages/stack_trace/test/frame_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..63035e0e692867676d52fc060f96f9cd87f5be12
--- /dev/null
+++ b/packages/stack_trace/test/frame_test.dart
@@ -0,0 +1,573 @@
+// 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.
+
+library frame_test;
+
+import 'package:path/path.dart' as path;
+import 'package:stack_trace/stack_trace.dart';
+import 'package:test/test.dart';
+
+void main() {
+  group('.parseVM', () {
+    test('parses a stack frame with column correctly', () {
+      var frame = new Frame.parseVM("#1      Foo._bar "
+          "(file:///home/nweiz/code/stuff.dart:42:21)");
+      expect(frame.uri,
+          equals(Uri.parse("file:///home/nweiz/code/stuff.dart")));
+      expect(frame.line, equals(42));
+      expect(frame.column, equals(21));
+      expect(frame.member, equals('Foo._bar'));
+    });
+
+    test('parses a stack frame without column correctly', () {
+      var frame = new Frame.parseVM("#1      Foo._bar "
+          "(file:///home/nweiz/code/stuff.dart:24)");
+      expect(frame.uri,
+          equals(Uri.parse("file:///home/nweiz/code/stuff.dart")));
+      expect(frame.line, equals(24));
+      expect(frame.column, null);
+      expect(frame.member, equals('Foo._bar'));
+    });
+
+    // This can happen with async stack traces. See issue 22009.
+    test('parses a stack frame without line or column correctly', () {
+      var frame = new Frame.parseVM("#1      Foo._bar "
+          "(file:///home/nweiz/code/stuff.dart)");
+      expect(frame.uri,
+          equals(Uri.parse("file:///home/nweiz/code/stuff.dart")));
+      expect(frame.line, isNull);
+      expect(frame.column, isNull);
+      expect(frame.member, equals('Foo._bar'));
+    });
+
+    test('converts "<anonymous closure>" to "<fn>"', () {
+      String parsedMember(String member) =>
+          new Frame.parseVM('#0 $member (foo:0:0)').member;
+
+      expect(parsedMember('Foo.<anonymous closure>'), equals('Foo.<fn>'));
+      expect(parsedMember('<anonymous closure>.<anonymous closure>.bar'),
+          equals('<fn>.<fn>.bar'));
+    });
+
+    test('converts "<<anonymous closure>_async_body>" to "<async>"', () {
+      var frame = new Frame.parseVM(
+          '#0 Foo.<<anonymous closure>_async_body> (foo:0:0)');
+      expect(frame.member, equals('Foo.<async>'));
+    });
+
+    test('converts "<function_name_async_body>" to "<async>"', () {
+      var frame = new Frame.parseVM(
+          '#0 Foo.<function_name_async_body> (foo:0:0)');
+      expect(frame.member, equals('Foo.<async>'));
+    });
+
+    test('parses a folded frame correctly', () {
+      var frame = new Frame.parseVM('...');
+
+      expect(frame.member, equals('...'));
+      expect(frame.uri, equals(new Uri()));
+      expect(frame.line, isNull);
+      expect(frame.column, isNull);
+    });
+
+    test('returns an UnparsedFrame for malformed frames', () {
+      expectIsUnparsed((text) => new Frame.parseV8(text), '');
+      expectIsUnparsed((text) => new Frame.parseV8(text), '#1');
+      expectIsUnparsed((text) => new Frame.parseV8(text), '#1      Foo');
+      expectIsUnparsed((text) => new Frame.parseV8(text),
+          '#1      (dart:async/future.dart:10:15)');
+      expectIsUnparsed((text) => new Frame.parseV8(text),
+          'Foo (dart:async/future.dart:10:15)');
+    });
+  });
+
+  group('.parseV8', () {
+    test('parses a stack frame correctly', () {
+      var frame = new Frame.parseV8("    at VW.call\$0 "
+          "(http://pub.dartlang.org/stuff.dart.js:560:28)");
+      expect(frame.uri,
+          equals(Uri.parse("http://pub.dartlang.org/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, equals(28));
+      expect(frame.member, equals('VW.call\$0'));
+    });
+
+    test('parses a stack frame with an absolute POSIX path correctly', () {
+      var frame = new Frame.parseV8("    at VW.call\$0 "
+          "(/path/to/stuff.dart.js:560:28)");
+      expect(frame.uri, equals(Uri.parse("file:///path/to/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, equals(28));
+      expect(frame.member, equals('VW.call\$0'));
+    });
+
+    test('parses a stack frame with an absolute Windows path correctly', () {
+      var frame = new Frame.parseV8("    at VW.call\$0 "
+          r"(C:\path\to\stuff.dart.js:560:28)");
+      expect(frame.uri, equals(Uri.parse("file:///C:/path/to/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, equals(28));
+      expect(frame.member, equals('VW.call\$0'));
+    });
+
+    test('parses a stack frame with a Windows UNC path correctly', () {
+      var frame = new Frame.parseV8("    at VW.call\$0 "
+          r"(\\mount\path\to\stuff.dart.js:560:28)");
+      expect(frame.uri,
+          equals(Uri.parse("file://mount/path/to/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, equals(28));
+      expect(frame.member, equals('VW.call\$0'));
+    });
+
+    test('parses a stack frame with a relative POSIX path correctly', () {
+      var frame = new Frame.parseV8("    at VW.call\$0 "
+          "(path/to/stuff.dart.js:560:28)");
+      expect(frame.uri, equals(Uri.parse("path/to/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, equals(28));
+      expect(frame.member, equals('VW.call\$0'));
+    });
+
+    test('parses a stack frame with a relative Windows path correctly', () {
+      var frame = new Frame.parseV8("    at VW.call\$0 "
+          r"(path\to\stuff.dart.js:560:28)");
+      expect(frame.uri, equals(Uri.parse("path/to/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, equals(28));
+      expect(frame.member, equals('VW.call\$0'));
+    });
+
+    test('parses an anonymous stack frame correctly', () {
+      var frame = new Frame.parseV8(
+          "    at http://pub.dartlang.org/stuff.dart.js:560:28");
+      expect(frame.uri,
+          equals(Uri.parse("http://pub.dartlang.org/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, equals(28));
+      expect(frame.member, equals('<fn>'));
+    });
+
+    test('parses a native stack frame correctly', () {
+      var frame = new Frame.parseV8(
+          "    at Object.stringify (native)");
+      expect(frame.uri, Uri.parse('native'));
+      expect(frame.line, isNull);
+      expect(frame.column, isNull);
+      expect(frame.member, equals('Object.stringify'));
+    });
+
+    test('parses a stack frame with [as ...] correctly', () {
+      // Ignore "[as ...]", since other stack trace formats don't support a
+      // similar construct.
+      var frame = new Frame.parseV8("    at VW.call\$0 [as call\$4] "
+          "(http://pub.dartlang.org/stuff.dart.js:560:28)");
+      expect(frame.uri,
+          equals(Uri.parse("http://pub.dartlang.org/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, equals(28));
+      expect(frame.member, equals('VW.call\$0'));
+    });
+
+    test('parses a basic eval stack frame correctly', () {
+      var frame = new Frame.parseV8("    at eval (eval at <anonymous> "
+          "(http://pub.dartlang.org/stuff.dart.js:560:28))");
+      expect(frame.uri,
+          equals(Uri.parse("http://pub.dartlang.org/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, equals(28));
+      expect(frame.member, equals('eval'));
+    });
+
+    test('parses an IE10 eval stack frame correctly', () {
+      var frame = new Frame.parseV8("    at eval (eval at Anonymous function "
+          "(http://pub.dartlang.org/stuff.dart.js:560:28))");
+      expect(frame.uri,
+          equals(Uri.parse("http://pub.dartlang.org/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, equals(28));
+      expect(frame.member, equals('eval'));
+    });
+
+    test('parses an eval stack frame with inner position info correctly', () {
+      var frame = new Frame.parseV8("    at eval (eval at <anonymous> "
+          "(http://pub.dartlang.org/stuff.dart.js:560:28), <anonymous>:3:28)");
+      expect(frame.uri,
+          equals(Uri.parse("http://pub.dartlang.org/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, equals(28));
+      expect(frame.member, equals('eval'));
+    });
+
+    test('parses a nested eval stack frame correctly', () {
+      var frame = new Frame.parseV8("    at eval (eval at <anonymous> "
+          "(eval at sub (http://pub.dartlang.org/stuff.dart.js:560:28)))");
+      expect(frame.uri,
+          equals(Uri.parse("http://pub.dartlang.org/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, equals(28));
+      expect(frame.member, equals('eval'));
+    });
+
+    test('converts "<anonymous>" to "<fn>"', () {
+      String parsedMember(String member) =>
+          new Frame.parseV8('    at $member (foo:0:0)').member;
+
+      expect(parsedMember('Foo.<anonymous>'), equals('Foo.<fn>'));
+      expect(parsedMember('<anonymous>.<anonymous>.bar'),
+          equals('<fn>.<fn>.bar'));
+    });
+
+    test('returns an UnparsedFrame for malformed frames', () {
+      expectIsUnparsed((text) => new Frame.parseV8(text), '');
+      expectIsUnparsed((text) => new Frame.parseV8(text), '    at');
+      expectIsUnparsed((text) => new Frame.parseV8(text), '    at Foo');
+      expectIsUnparsed((text) => new Frame.parseV8(text),
+          '    at Foo (dart:async/future.dart)');
+      expectIsUnparsed((text) => new Frame.parseV8(text),
+          '    at (dart:async/future.dart:10:15)');
+      expectIsUnparsed((text) => new Frame.parseV8(text),
+          'Foo (dart:async/future.dart:10:15)');
+      expectIsUnparsed((text) => new Frame.parseV8(text),
+          '    at dart:async/future.dart');
+      expectIsUnparsed((text) => new Frame.parseV8(text),
+          '    at dart:async/future.dart:10');
+      expectIsUnparsed((text) => new Frame.parseV8(text),
+          'dart:async/future.dart:10:15');
+    });
+  });
+
+  group('.parseFirefox/.parseSafari', () {
+    test('parses a simple stack frame correctly', () {
+      var frame = new Frame.parseFirefox(
+          ".VW.call\$0@http://pub.dartlang.org/stuff.dart.js:560");
+      expect(frame.uri,
+          equals(Uri.parse("http://pub.dartlang.org/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, isNull);
+      expect(frame.member, equals('VW.call\$0'));
+    });
+
+    test('parses a stack frame with an absolute POSIX path correctly', () {
+      var frame = new Frame.parseFirefox(
+          ".VW.call\$0@/path/to/stuff.dart.js:560");
+      expect(frame.uri, equals(Uri.parse("file:///path/to/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, isNull);
+      expect(frame.member, equals('VW.call\$0'));
+    });
+
+    test('parses a stack frame with an absolute Windows path correctly', () {
+      var frame = new Frame.parseFirefox(
+          r".VW.call$0@C:\path\to\stuff.dart.js:560");
+      expect(frame.uri, equals(Uri.parse("file:///C:/path/to/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, isNull);
+      expect(frame.member, equals('VW.call\$0'));
+    });
+
+    test('parses a stack frame with a Windows UNC path correctly', () {
+      var frame = new Frame.parseFirefox(
+          r".VW.call$0@\\mount\path\to\stuff.dart.js:560");
+      expect(frame.uri,
+          equals(Uri.parse("file://mount/path/to/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, isNull);
+      expect(frame.member, equals('VW.call\$0'));
+    });
+
+    test('parses a stack frame with a relative POSIX path correctly', () {
+      var frame = new Frame.parseFirefox(
+          ".VW.call\$0@path/to/stuff.dart.js:560");
+      expect(frame.uri, equals(Uri.parse("path/to/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, isNull);
+      expect(frame.member, equals('VW.call\$0'));
+    });
+
+    test('parses a stack frame with a relative Windows path correctly', () {
+      var frame = new Frame.parseFirefox(
+          r".VW.call$0@path\to\stuff.dart.js:560");
+      expect(frame.uri, equals(Uri.parse("path/to/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, isNull);
+      expect(frame.member, equals('VW.call\$0'));
+    });
+
+    test('parses a simple anonymous stack frame correctly', () {
+      var frame = new Frame.parseFirefox(
+          "@http://pub.dartlang.org/stuff.dart.js:560");
+      expect(frame.uri,
+          equals(Uri.parse("http://pub.dartlang.org/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, isNull);
+      expect(frame.member, equals("<fn>"));
+    });
+
+    test('parses a nested anonymous stack frame correctly', () {
+      var frame = new Frame.parseFirefox(
+          ".foo/<@http://pub.dartlang.org/stuff.dart.js:560");
+      expect(frame.uri,
+          equals(Uri.parse("http://pub.dartlang.org/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, isNull);
+      expect(frame.member, equals("foo.<fn>"));
+
+      frame = new Frame.parseFirefox(
+          ".foo/@http://pub.dartlang.org/stuff.dart.js:560");
+      expect(frame.uri,
+          equals(Uri.parse("http://pub.dartlang.org/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, isNull);
+      expect(frame.member, equals("foo.<fn>"));
+    });
+
+    test('parses a named nested anonymous stack frame correctly', () {
+      var frame = new Frame.parseFirefox(
+          ".foo/.name<@http://pub.dartlang.org/stuff.dart.js:560");
+      expect(frame.uri,
+          equals(Uri.parse("http://pub.dartlang.org/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, isNull);
+      expect(frame.member, equals("foo.<fn>"));
+
+      frame = new Frame.parseFirefox(
+          ".foo/.name@http://pub.dartlang.org/stuff.dart.js:560");
+      expect(frame.uri,
+          equals(Uri.parse("http://pub.dartlang.org/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, isNull);
+      expect(frame.member, equals("foo.<fn>"));
+    });
+
+    test('parses a stack frame with parameters correctly', () {
+      var frame = new Frame.parseFirefox(
+          '.foo(12, "@)()/<")@http://pub.dartlang.org/stuff.dart.js:560');
+      expect(frame.uri,
+          equals(Uri.parse("http://pub.dartlang.org/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, isNull);
+      expect(frame.member, equals("foo"));
+    });
+
+    test('parses a nested anonymous stack frame with parameters correctly', () {
+      var frame = new Frame.parseFirefox(
+          '.foo(12, "@)()/<")/.fn<@'
+          'http://pub.dartlang.org/stuff.dart.js:560');
+      expect(frame.uri,
+          equals(Uri.parse("http://pub.dartlang.org/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, isNull);
+      expect(frame.member, equals("foo.<fn>"));
+    });
+
+    test('parses a deeply-nested anonymous stack frame with parameters '
+        'correctly', () {
+      var frame = new Frame.parseFirefox(
+          '.convertDartClosureToJS/\$function</<@'
+          'http://pub.dartlang.org/stuff.dart.js:560');
+      expect(frame.uri,
+          equals(Uri.parse("http://pub.dartlang.org/stuff.dart.js")));
+      expect(frame.line, equals(560));
+      expect(frame.column, isNull);
+      expect(frame.member, equals("convertDartClosureToJS.<fn>.<fn>"));
+    });
+
+    test('returns an UnparsedFrame for malformed frames', () {
+      expectIsUnparsed((text) => new Frame.parseFirefox(text), '');
+      expectIsUnparsed((text) => new Frame.parseFirefox(text), '.foo');
+      expectIsUnparsed((text) => new Frame.parseFirefox(text),
+          '.foo@dart:async/future.dart');
+      expectIsUnparsed((text) => new Frame.parseFirefox(text),
+          '.foo(@dart:async/future.dart:10');
+      expectIsUnparsed((text) => new Frame.parseFirefox(text),
+          '@dart:async/future.dart');
+    });
+
+    test('parses a simple stack frame correctly', () {
+      var frame = new Frame.parseFirefox(
+          "foo\$bar@http://dartlang.org/foo/bar.dart:10:11");
+      expect(frame.uri, equals(Uri.parse("http://dartlang.org/foo/bar.dart")));
+      expect(frame.line, equals(10));
+      expect(frame.column, equals(11));
+      expect(frame.member, equals('foo\$bar'));
+    });
+
+    test('parses an anonymous stack frame correctly', () {
+      var frame = new Frame.parseFirefox(
+          "http://dartlang.org/foo/bar.dart:10:11");
+      expect(frame.uri, equals(Uri.parse("http://dartlang.org/foo/bar.dart")));
+      expect(frame.line, equals(10));
+      expect(frame.column, equals(11));
+      expect(frame.member, equals('<fn>'));
+    });
+
+    test('parses a stack frame with no line correctly', () {
+      var frame = new Frame.parseFirefox(
+          "foo\$bar@http://dartlang.org/foo/bar.dart::11");
+      expect(frame.uri, equals(Uri.parse("http://dartlang.org/foo/bar.dart")));
+      expect(frame.line, isNull);
+      expect(frame.column, equals(11));
+      expect(frame.member, equals('foo\$bar'));
+    });
+
+    test('parses a stack frame with no column correctly', () {
+      var frame = new Frame.parseFirefox(
+          "foo\$bar@http://dartlang.org/foo/bar.dart:10:");
+      expect(frame.uri, equals(Uri.parse("http://dartlang.org/foo/bar.dart")));
+      expect(frame.line, equals(10));
+      expect(frame.column, isNull);
+      expect(frame.member, equals('foo\$bar'));
+    });
+
+    test('parses a stack frame with no line or column correctly', () {
+      var frame = new Frame.parseFirefox(
+          "foo\$bar@http://dartlang.org/foo/bar.dart:10:11");
+      expect(frame.uri, equals(Uri.parse("http://dartlang.org/foo/bar.dart")));
+      expect(frame.line, equals(10));
+      expect(frame.column, equals(11));
+      expect(frame.member, equals('foo\$bar'));
+    });
+  });
+
+  group('.parseFriendly', () {
+    test('parses a simple stack frame correctly', () {
+      var frame = new Frame.parseFriendly(
+          "http://dartlang.org/foo/bar.dart 10:11  Foo.<fn>.bar");
+      expect(frame.uri, equals(Uri.parse("http://dartlang.org/foo/bar.dart")));
+      expect(frame.line, equals(10));
+      expect(frame.column, equals(11));
+      expect(frame.member, equals('Foo.<fn>.bar'));
+    });
+
+    test('parses a stack frame with no line or column correctly', () {
+      var frame = new Frame.parseFriendly(
+          "http://dartlang.org/foo/bar.dart  Foo.<fn>.bar");
+      expect(frame.uri, equals(Uri.parse("http://dartlang.org/foo/bar.dart")));
+      expect(frame.line, isNull);
+      expect(frame.column, isNull);
+      expect(frame.member, equals('Foo.<fn>.bar'));
+    });
+
+    test('parses a stack frame with no line correctly', () {
+      var frame = new Frame.parseFriendly(
+          "http://dartlang.org/foo/bar.dart 10  Foo.<fn>.bar");
+      expect(frame.uri, equals(Uri.parse("http://dartlang.org/foo/bar.dart")));
+      expect(frame.line, equals(10));
+      expect(frame.column, isNull);
+      expect(frame.member, equals('Foo.<fn>.bar'));
+    });
+
+    test('parses a stack frame with a relative path correctly', () {
+      var frame = new Frame.parseFriendly("foo/bar.dart 10:11    Foo.<fn>.bar");
+      expect(frame.uri, equals(
+          path.toUri(path.absolute(path.join('foo', 'bar.dart')))));
+      expect(frame.line, equals(10));
+      expect(frame.column, equals(11));
+      expect(frame.member, equals('Foo.<fn>.bar'));
+    });
+
+    test('returns an UnparsedFrame for malformed frames', () {
+      expectIsUnparsed((text) => new Frame.parseFriendly(text), '');
+      expectIsUnparsed((text) => new Frame.parseFriendly(text), 'foo/bar.dart');
+      expectIsUnparsed((text) => new Frame.parseFriendly(text),
+          'foo/bar.dart 10:11');
+    });
+  });
+
+  test('only considers dart URIs to be core', () {
+    bool isCore(String library) =>
+      new Frame.parseVM('#0 Foo ($library:0:0)').isCore;
+
+    expect(isCore('dart:core'), isTrue);
+    expect(isCore('dart:async'), isTrue);
+    expect(isCore('dart:core/uri.dart'), isTrue);
+    expect(isCore('dart:async/future.dart'), isTrue);
+    expect(isCore('bart:core'), isFalse);
+    expect(isCore('sdart:core'), isFalse);
+    expect(isCore('darty:core'), isFalse);
+    expect(isCore('bart:core/uri.dart'), isFalse);
+  });
+
+  group('.library', () {
+    test('returns the URI string for non-file URIs', () {
+      expect(new Frame.parseVM('#0 Foo (dart:async/future.dart:0:0)').library,
+          equals('dart:async/future.dart'));
+      expect(new Frame.parseVM('#0 Foo '
+              '(http://dartlang.org/stuff/thing.dart:0:0)').library,
+          equals('http://dartlang.org/stuff/thing.dart'));
+    });
+
+    test('returns the relative path for file URIs', () {
+      expect(new Frame.parseVM('#0 Foo (foo/bar.dart:0:0)').library,
+          equals(path.join('foo', 'bar.dart')));
+    });
+
+    test('truncates data: URIs', () {
+      var frame = new Frame.parseVM(
+          '#0 Foo (data:application/dart;charset=utf-8,blah:0:0)');
+      expect(frame.library, equals('data:...'));
+    });
+  });
+
+  group('.location', () {
+    test('returns the library and line/column numbers for non-core '
+        'libraries', () {
+      expect(new Frame.parseVM('#0 Foo '
+              '(http://dartlang.org/thing.dart:5:10)').location,
+          equals('http://dartlang.org/thing.dart 5:10'));
+      expect(new Frame.parseVM('#0 Foo (foo/bar.dart:1:2)').location,
+          equals('${path.join('foo', 'bar.dart')} 1:2'));
+    });
+  });
+
+  group('.package', () {
+    test('returns null for non-package URIs', () {
+      expect(new Frame.parseVM('#0 Foo (dart:async/future.dart:0:0)').package,
+          isNull);
+      expect(new Frame.parseVM('#0 Foo '
+              '(http://dartlang.org/stuff/thing.dart:0:0)').package,
+          isNull);
+    });
+
+    test('returns the package name for package: URIs', () {
+      expect(new Frame.parseVM('#0 Foo (package:foo/foo.dart:0:0)').package,
+          equals('foo'));
+      expect(new Frame.parseVM('#0 Foo (package:foo/zap/bar.dart:0:0)').package,
+          equals('foo'));
+    });
+  });
+
+  group('.toString()', () {
+    test('returns the library and line/column numbers for non-core '
+        'libraries', () {
+      expect(new Frame.parseVM('#0 Foo (http://dartlang.org/thing.dart:5:10)')
+              .toString(),
+          equals('http://dartlang.org/thing.dart 5:10 in Foo'));
+    });
+
+    test('converts "<anonymous closure>" to "<fn>"', () {
+      expect(new Frame.parseVM('#0 Foo.<anonymous closure> '
+              '(dart:core/uri.dart:5:10)').toString(),
+          equals('dart:core/uri.dart 5:10 in Foo.<fn>'));
+    });
+
+    test('prints a frame without a column correctly', () {
+      expect(new Frame.parseVM('#0 Foo (dart:core/uri.dart:5)').toString(),
+          equals('dart:core/uri.dart 5 in Foo'));
+    });
+
+    test('prints relative paths as relative', () {
+      var relative = path.normalize('relative/path/to/foo.dart');
+      expect(new Frame.parseFriendly('$relative 5:10  Foo').toString(),
+          equals('$relative 5:10 in Foo'));
+    });
+  });
+}
+
+void expectIsUnparsed(Frame constructor(String text), String text) {
+  var frame = constructor(text);
+  expect(frame, new isInstanceOf<UnparsedFrame>());
+  expect(frame.toString(), equals(text));
+}