Add test- and group-level support for skipping tests.

test/runner/compact_reporter_test.dart

 // Copyright (c) 2015, 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.
 
 @TestOn("vm")
 
 import 'dart:io';
 
 import 'package:path/path.dart' as p;
 import 'package:test/src/util/io.dart';
@@ skipping 212 matching lines @@
           test.dart 10:11  main.<fn>
 
         five
         six
 
         +0 -1: wait
         +1 -1: wait
         +1 -1: Some tests failed.""");
     });
   });
+
+  group("skip:", () {
+    test("displays skipped tests separately", () {
+      _expectReport("""
+          test('skip 1', () {}, skip: true);
+          test('skip 2', () {}, skip: true);
+          test('skip 3', () {}, skip: true);""",
+          """
+          +0: skip 1
+          +0 ~1: skip 1
+          +0 ~1: skip 2
+          +0 ~2: skip 2
+          +0 ~2: skip 3
+          +0 ~3: skip 3
+          +0 ~3: All tests skipped.""");
+    });
+
+    test("runs skipped tests along with successful tests", () {
+      _expectReport("""
+          test('skip 1', () {}, skip: true);
+          test('success 1', () {});
+          test('skip 2', () {}, skip: true);
+          test('success 2', () {});""",
+          """
+          +0: skip 1
+          +0 ~1: skip 1
+          +0 ~1: success 1
+          +1 ~1: success 1
+          +1 ~1: skip 2
+          +1 ~2: skip 2
+          +1 ~2: success 2
+          +2 ~2: success 2
+          +2 ~2: All tests passed!""");
+    });
+
+    test("runs skipped tests along with successful and failing tests", () {
+      _expectReport("""
+          test('failure 1', () => throw new TestFailure('oh no'));
+          test('skip 1', () {}, skip: true);
+          test('success 1', () {});
+          test('failure 2', () => throw new TestFailure('oh no'));
+          test('skip 2', () {}, skip: true);
+          test('success 2', () {});""",
+          """
+          +0: failure 1
+          +0 -1: failure 1
+            oh no
+            test.dart 6:35  main.<fn>
+
+
+          +0 -1: skip 1
+          +0 ~1 -1: skip 1
+          +0 ~1 -1: success 1
+          +1 ~1 -1: success 1
+          +1 ~1 -1: failure 2
+          +1 ~1 -2: failure 2
+            oh no
+            test.dart 9:35  main.<fn>
+
+
+          +1 ~1 -2: skip 2
+          +1 ~2 -2: skip 2
+          +1 ~2 -2: success 2
+          +2 ~2 -2: success 2
+          +2 ~2 -2: Some tests failed.""");
+    });
+
+    test("displays the skip reason if available", () {
+      _expectReport("""
+          test('skip 1', () {}, skip: 'some reason');
+          test('skip 2', () {}, skip: 'or another');""",
+          """
+          +0: skip 1
+          +0 ~1: skip 1
+            Skip: some reason
+
+          +0 ~1: skip 2
+          +0 ~2: skip 2
+            Skip: or another
+
+          +0 ~2: All tests skipped.""");
+    });
+  });
 }
 
 void _expectReport(String tests, String expected, {List<String> args,
     int concurrency}) {
   if (concurrency == null) concurrency = 1;
 
   var dart = """
 import 'dart:async';
 
 import 'package:test/test.dart';
@@ skipping 20 matching lines @@
     // Un-indent the expected string.
     var indentation = expected.indexOf(new RegExp("[^ ]"));
     expected = expected.split("\n").map((line) {
       if (line.isEmpty) return line;
       return line.substring(indentation);
     }).join("\n");
 
     expect(actual, equals(expected));
   }), completes);
 }