Unit test filtering.

lib/unittest/unittest.dart

Index: lib/unittest/unittest.dart
===================================================================
--- lib/unittest/unittest.dart	(revision 9065)
+++ lib/unittest/unittest.dart	(working copy)
@@ -214,6 +214,12 @@
 TestCase _soloTest;
 
 /**
+ * If set, then only tests whose descriptions match this regexp pattern
+ * will be run.
+ */
+String _filter = null;
+
+/**
  * (Deprecated) Evaluates the [function] and validates that it throws an
  * exception. If [callback] is provided, then it will be invoked with the
  * thrown exception. The callback may do any validation it wants. In addition,
@@ -242,6 +248,22 @@
 }
 
 /**
+ * Sets the regexp pattern filter which constrains which tests to run
+ * based on their descriptions.
+ */
+void setFilter(String filter) {

[Siggi Cherem (dart-lang), 2012/06/25 21:40:59]

use a setter instead:

String set filter(String value) {
 ...
}

+  if (filter == '') filter = null;
+  _filter = filter;
+}
+
+/**
+ * Gets the regexp pattern filter which constrains which tests to run
+ * based on their descriptions.
+ */
+String getFilter() {

[Siggi Cherem (dart-lang), 2012/06/25 21:40:59]

use a getter instead:

String get filter => _filter;

+  return _filter;
+}
+/**
  * Creates a new test case with the given description and body. The
  * description will include the descriptions of any surrounding group()
  * calls.
@@ -641,6 +663,10 @@
   if (_soloTest != null) {
     _tests = _tests.filter((t) => t == _soloTest);
   }
+  if (_filter != null) {

[Siggi Cherem (dart-lang), 2012/06/25 21:40:59]

To simplify the API, I'm inclined to just make _filter public (remove the getter
and setter) and check where for _fileter != null or != '')

+    RegExp re = new RegExp(_filter);
+    _tests = _tests.filter((t) => re.hasMatch(t.description));
+  }
 
   _config.onStart();