Enable Travis-CI (flutter#19)

Fixes flutter#18

.travis.yml

@@ -0,0 +1,24 @@
+language: dart
+
+dart:
+  - dev
+  - stable
+
+dart_task:
+  - test: --platform vm,chrome
+
+matrix:
+  include:
+    # Only validate formatting using the dev release
+    - dart: dev
+      dart_task: dartfmt
+    - dart: dev
+      dart_task: dartanalyzer
+
+# Only building master means that we don't run two builds for each pull request.
+branches:
+  only: [master]
+
+cache:
+ directories:
+   - $HOME/.pub-cache

lib/src/colors.dart

@@ -8,4 +8,3 @@ const String RED = '\u001b[31m';
 const String YELLOW = '\u001b[33m';
 
 const String NONE = '\u001b[0m';
-

lib/src/file.dart

@@ -53,8 +53,7 @@ class SourceFile {
   ///
   /// Use [new SourceFile.fromString] instead.
   @Deprecated("Will be removed in 2.0.0")
-  SourceFile(String text, {url})
-      : this.decoded(text.runes, url: url);
+  SourceFile(String text, {url}) : this.decoded(text.runes, url: url);
 
   /// Creates a new source file from [text].
   ///
@@ -317,7 +316,6 @@ class _FileSpan extends SourceSpanMixin implements FileSpan {
   SourceSpan union(SourceSpan other) {
     if (other is! FileSpan) return super.union(other);
 
-
     _FileSpan span = expand(other);
 
     if (other is _FileSpan) {
@@ -339,7 +337,8 @@ class _FileSpan extends SourceSpanMixin implements FileSpan {
       return super == other && sourceUrl == other.sourceUrl;
     }
 
-    return _start == other._start && _end == other._end &&
+    return _start == other._start &&
+        _end == other._end &&
         sourceUrl == other.sourceUrl;
   }
 

lib/src/location.dart

@@ -82,7 +82,8 @@ class SourceLocation implements Comparable<SourceLocation> {
   }
 
   bool operator ==(other) =>
-      other is SourceLocation && sourceUrl == other.sourceUrl &&
+      other is SourceLocation &&
+      sourceUrl == other.sourceUrl &&
       offset == other.offset;
 
   int get hashCode => sourceUrl.hashCode + offset;

lib/src/location_mixin.dart

@@ -46,4 +46,3 @@ abstract class SourceLocationMixin implements SourceLocation {
 
   String toString() => '<$runtimeType: $offset $toolString>';
 }
-

lib/src/span_mixin.dart

@@ -113,8 +113,8 @@ abstract class SourceSpanMixin implements SourceSpan {
     return buffer.toString();
   }
 
-  bool operator ==(other) => other is SourceSpan &&
-      start == other.start && end == other.end;
+  bool operator ==(other) =>
+      other is SourceSpan && start == other.start && end == other.end;
 
   int get hashCode => start.hashCode + (31 * end.hashCode);
 

lib/src/span_with_context.dart

@@ -22,7 +22,7 @@ class SourceSpanWithContext extends SourceSpanBase {
   /// [text] should start at `start.column` from the beginning of a line in
   /// [context].
   SourceSpanWithContext(
-          SourceLocation start, SourceLocation end, String text, this._context)
+      SourceLocation start, SourceLocation end, String text, this._context)
       : super(start, end, text) {
     if (!context.contains(text)) {
       throw new ArgumentError(

test/file_test.dart

@@ -87,7 +87,7 @@ zip zap zop""", url: "foo.dart");
       test("column may not be outside the file", () {
         expect(() => file.getOffset(2, 100), throwsRangeError);
       });
- 
+
       test("column may not be outside the line", () {
         expect(() => file.getOffset(1, 20), throwsRangeError);
       });
@@ -109,8 +109,8 @@ zip zap zop""", url: "foo.dart");
 
     group("for span().union()", () {
       test("source URLs must match", () {
-        var other = new SourceSpan(
-            new SourceLocation(10), new SourceLocation(11), "_");
+        var other =
+            new SourceSpan(new SourceLocation(10), new SourceLocation(11), "_");
 
         expect(() => file.span(9, 10).union(other), throwsArgumentError);
       });
@@ -312,10 +312,8 @@ zip zap zop""", url: "bar.dart").span(10, 11);
       });
 
       test("returns a base SourceSpan for a SourceSpan input", () {
-        var other = new SourceSpan(
-            new SourceLocation(0, sourceUrl: "foo.dart"),
-            new SourceLocation(5, sourceUrl: "foo.dart"),
-            "hey, ");
+        var other = new SourceSpan(new SourceLocation(0, sourceUrl: "foo.dart"),
+            new SourceLocation(5, sourceUrl: "foo.dart"), "hey, ");
         var result = span.union(other);
         expect(result, isNot(new isInstanceOf<FileSpan>()));
         expect(result.start, equals(other.start));

test/highlight_test.dart

@@ -62,22 +62,19 @@ zip zap zop
   });
 
   test("works for a point span in an empty file", () {
-    expect(new SourceFile("").location(0).pointSpan().highlight(),
-        equals("""
+    expect(new SourceFile("").location(0).pointSpan().highlight(), equals("""
 
 ^"""));
   });
 
   test("works for a single-line file without a newline", () {
-    expect(new SourceFile("foo bar").span(0, 7).highlight(),
-        equals("""
+    expect(new SourceFile("foo bar").span(0, 7).highlight(), equals("""
 foo bar
 ^^^^^^^"""));
   });
 
   test("emits tabs for tabs", () {
-    expect(new SourceFile(" \t \t\tfoo bar").span(5, 8).highlight(),
-        equals("""
+    expect(new SourceFile(" \t \t\tfoo bar").span(5, 8).highlight(), equals("""
  \t \t\tfoo bar
  \t \t\t^^^"""));
   });

test/location_test.dart

@@ -8,8 +8,8 @@ import 'package:source_span/source_span.dart';
 main() {
   var location;
   setUp(() {
-    location = new SourceLocation(15,
-        line: 2, column: 6, sourceUrl: "foo.dart");
+    location =
+        new SourceLocation(15, line: 2, column: 6, sourceUrl: "foo.dart");
   });
 
   group('errors', () {
@@ -28,13 +28,13 @@ main() {
     });
 
     test('for distance() source URLs must match', () {
-      expect(() => location.distance(new SourceLocation(0)),
-          throwsArgumentError);
+      expect(
+          () => location.distance(new SourceLocation(0)), throwsArgumentError);
     });
 
     test('for compareTo() source URLs must match', () {
-      expect(() => location.compareTo(new SourceLocation(0)),
-          throwsArgumentError);
+      expect(
+          () => location.compareTo(new SourceLocation(0)), throwsArgumentError);
     });
   });
 
@@ -81,7 +81,6 @@ main() {
     });
   });
 
-
   group("equality", () {
     test("two locations with the same offset and source are equal", () {
       var other = new SourceLocation(15, sourceUrl: "foo.dart");