Update charted to 0.4.8 and roll

packages/source_span/test/file_message_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.
-
-import 'package:test/test.dart';
-import 'package:source_span/source_span.dart';
-import 'package:source_span/src/colors.dart' as colors;
-
-main() {
-  var file;
-  setUp(() {
-    file = new SourceFile("""
-foo bar baz
-whiz bang boom
-zip zap zop
-""", url: "foo.dart");
-  });
-
-  test("points to the span in the source", () {
-    expect(file.span(4, 7).message("oh no"), equals("""
-line 1, column 5 of foo.dart: oh no
-foo bar baz
-    ^^^"""));
-  });
-
-  test("gracefully handles a missing source URL", () {
-    var span = new SourceFile("foo bar baz").span(4, 7);
-    expect(span.message("oh no"), equals("""
-line 1, column 5: oh no
-foo bar baz
-    ^^^"""));
-  });
-
-  test("highlights the first line of a multiline span", () {
-    expect(file.span(4, 20).message("oh no"), equals("""
-line 1, column 5 of foo.dart: oh no
-foo bar baz
-    ^^^^^^^^"""));
-  });
-
-  test("works for a point span", () {
-    expect(file.location(4).pointSpan().message("oh no"), equals("""
-line 1, column 5 of foo.dart: oh no
-foo bar baz
-    ^"""));
-  });
-
-  test("works for a point span at the end of a line", () {
-    expect(file.location(11).pointSpan().message("oh no"), equals("""
-line 1, column 12 of foo.dart: oh no
-foo bar baz
-           ^"""));
-  });
-
-  test("works for a point span at the end of the file", () {
-    expect(file.location(38).pointSpan().message("oh no"), equals("""
-line 3, column 12 of foo.dart: oh no
-zip zap zop
-           ^"""));
-  });
-
-  test("works for a point span in an empty file", () {
-    expect(new SourceFile("").location(0).pointSpan().message("oh no"),
-        equals("""
-line 1, column 1: oh no
-
-^"""));
-  });
-
-  test("works for a single-line file without a newline", () {
-    expect(new SourceFile("foo bar").span(0, 7).message("oh no"),
-        equals("""
-line 1, column 1: oh no
-foo bar
-^^^^^^^"""));
-  });
-
-  group("colors", () {
-    test("doesn't colorize if color is false", () {
-      expect(file.span(4, 7).message("oh no", color: false), equals("""
-line 1, column 5 of foo.dart: oh no
-foo bar baz
-    ^^^"""));
-    });
-
-    test("colorizes if color is true", () {
-      expect(file.span(4, 7).message("oh no", color: true), equals("""
-line 1, column 5 of foo.dart: oh no
-foo ${colors.RED}bar${colors.NONE} baz
-    ${colors.RED}^^^${colors.NONE}"""));
-    });
-
-    test("uses the given color if it's passed", () {
-      expect(file.span(4, 7).message("oh no", color: colors.YELLOW), equals("""
-line 1, column 5 of foo.dart: oh no
-foo ${colors.YELLOW}bar${colors.NONE} baz
-    ${colors.YELLOW}^^^${colors.NONE}"""));
-    });
-  });
-}