Support unmapped areas in source maps.

pkg/source_maps/test/parse_map_with_no_source_location_test.dart

+// Copyright (c) 2014, 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.parser_test;

[Siggi Cherem (dart-lang), 2014/04/18 02:00:31]

let's move these tests into parser_test.dart, as 3 more 'test()'s 

[zarah, 2014/04/23 07:52:12]

Done.

+
+import 'package:source_maps/source_maps.dart';
+import 'package:unittest/unittest.dart';
+
+import 'dart:convert';
+
+const Map<String, dynamic>MAP_WITH_NO_SOURCE_LOCATION = const {

[Johnni Winther, 2014/04/15 06:50:19]

Add space between type and variable.

[zarah, 2014/04/23 07:52:12]

Done.

+    'version': 3,
+    'sourceRoot': '',
+    'sources': const ['input.dart'],
+    'names': const [],
+    'mappings': 'A',
+    'file': 'output.dart'
+};
+
+const Map<String, dynamic>MAP_WITH_SOURCE_LOCATION = const {

[Johnni Winther, 2014/04/15 06:50:19]

Ditto.

[zarah, 2014/04/23 07:52:12]

Done.

+    'version': 3,
+    'sourceRoot': '',
+    'sources': const ['input.dart'],
+    'names': const [],
+    'mappings': 'AAAA',
+    'file': 'output.dart'
+};
+
+const Map<String, dynamic>MAP_WITH_SOURCE_LOCATION_AND_NAME = const {

[Johnni Winther, 2014/04/15 06:50:19]

Ditto.

[zarah, 2014/04/23 07:52:12]

Done.

+    'version': 3,
+    'sourceRoot': '',
+    'sources': const ['input.dart'],
+    'names': const ['var'],
+    'mappings': 'AAAAA',
+    'file': 'output.dart'
+};
+
+main() {
+  SingleMapping map = parse(JSON.encode(MAP_WITH_NO_SOURCE_LOCATION));
+  expect(map.lines.length, 1);
+  expect(map.lines.first.entries.length, 1);
+  TargetEntry entry = map.lines.first.entries.first;
+
+  expect(entry.column, 0);
+  expect(entry.sourceUrlId, null);
+  expect(entry.sourceColumn, null);
+  expect(entry.sourceLine, null);
+  expect(entry.sourceNameId, null);
+
+  map = parse(JSON.encode(MAP_WITH_SOURCE_LOCATION));
+  expect(map.lines.length, 1);
+  expect(map.lines.first.entries.length, 1);
+  entry = map.lines.first.entries.first;
+
+  expect(entry.column, 0);
+  expect(entry.sourceUrlId, 0);
+  expect(entry.sourceColumn, 0);
+  expect(entry.sourceLine, 0);
+  expect(entry.sourceNameId, null);
+
+  map = parse(JSON.encode(MAP_WITH_SOURCE_LOCATION_AND_NAME));
+  expect(map.lines.length, 1);
+  expect(map.lines.first.entries.length, 1);
+  entry = map.lines.first.entries.first;
+
+  expect(entry.sourceUrlId, 0);
+  expect(entry.sourceUrlId, 0);
+  expect(entry.sourceColumn, 0);
+  expect(entry.sourceLine, 0);
+  expect(entry.sourceNameId, 0);
+}