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

lib/src/runner/reporter/no_io_compact.dart

Index: lib/src/runner/reporter/no_io_compact.dart
diff --git a/lib/src/runner/reporter/no_io_compact.dart b/lib/src/runner/reporter/no_io_compact.dart
index 8732110054173ad7baf17a39a46b45a563cf22ae..add3b3669eca144d2b01071c14f7a1d5872521ae 100644
--- a/lib/src/runner/reporter/no_io_compact.dart
+++ b/lib/src/runner/reporter/no_io_compact.dart
@@ -32,6 +32,10 @@ class NoIoCompactReporter {
   /// or not outputting to a terminal.
   final String _red;
 
+  /// The terminal escape for yellow text, or the empty string if this is
+  /// Windows or not outputting to a terminal.
+  final String _yellow;
+
   /// The terminal escape for removing test coloring, or the empty string if
   /// this is Windows or not outputting to a terminal.
   final String _noColor;
@@ -51,12 +55,18 @@ class NoIoCompactReporter {
   /// The set of tests that have completed and been marked as passing.
   final _passed = new Set<LiveTest>();
 
+  /// The set of tests that have completed and been marked as skipped.
+  final _skipped = new Set<LiveTest>();
+
   /// The set of tests that have completed and been marked as failing or error.
   final _failed = new Set<LiveTest>();
 
   /// The size of [_passed] last time a progress notification was printed.
   int _lastProgressPassed;
 
+  /// The size of [_skipped] last time a progress notification was printed.
+  int _lastProgressSkipped;
+
   /// The size of [_failed] last time a progress notification was printed.
   int _lastProgressFailed;
 
@@ -74,17 +84,28 @@ class NoIoCompactReporter {
         _engine = new Engine(suites),
         _green = color ? '\u001b[32m' : '',
         _red = color ? '\u001b[31m' : '',
+        _yellow = color ? '\u001b[33m' : '',
         _noColor = color ? '\u001b[0m' : '' {
     _engine.onTestStarted.listen((liveTest) {
       liveTest.onStateChange.listen((state) {
         if (state.status != Status.complete) return;
-        if (state.result == Result.success) {
-          _passed.add(liveTest);
-        } else {
+
+        if (state.result != Result.success) {
           _passed.remove(liveTest);
           _failed.add(liveTest);
+        } else if (liveTest.test.metadata.skip) {
+          _skipped.add(liveTest);
+        } else {
+          _passed.add(liveTest);
         }
+
         _progressLine(_description(liveTest));
+
+        if (liveTest.test.metadata.skip &&
+            liveTest.test.metadata.skipReason != null) {
+          print(indent('${_yellow}Skip: ${liveTest.test.metadata.skipReason}'
+              '$_noColor'));
+        }
       });
 
       liveTest.onError.listen((error) {
@@ -119,10 +140,12 @@ class NoIoCompactReporter {
 
     _stopwatch.start();
     return _engine.run().then((success) {
-      if (success) {
-        _progressLine("All tests passed!");
-      } else {
+      if (!success) {
         _progressLine('Some tests failed.', color: _red);
+      } else if (_passed.isEmpty) {
+        _progressLine("All tests skipped.");
+      } else {
+        _progressLine("All tests passed!");
       }
 
       return success;
@@ -141,12 +164,14 @@ class NoIoCompactReporter {
   void _progressLine(String message, {String color}) {
     // Print nothing if nothing has changed since the last progress line.
     if (_passed.length == _lastProgressPassed &&
+        _skipped.length == _lastProgressSkipped &&
         _failed.length == _lastProgressFailed &&
         message == _lastProgressMessage) {
       return;
     }
 
     _lastProgressPassed = _passed.length;
+    _lastProgressSkipped = _skipped.length;
     _lastProgressFailed = _failed.length;
     _lastProgressMessage = message;
 
@@ -161,6 +186,13 @@ class NoIoCompactReporter {
     buffer.write(_passed.length);
     buffer.write(_noColor);
 
+    if (_skipped.isNotEmpty) {
+      buffer.write(_yellow);
+      buffer.write(' ~');
+      buffer.write(_skipped.length);
+      buffer.write(_noColor);
+    }
+
     if (_failed.isNotEmpty) {
       buffer.write(_red);
       buffer.write(' -');