Adds Junit tests in dartc back into test.py

compiler/javatests/com/google/dart/compiler/CompilerTestCase.java

Index: compiler/javatests/com/google/dart/compiler/CompilerTestCase.java
diff --git a/compiler/javatests/com/google/dart/compiler/CompilerTestCase.java b/compiler/javatests/com/google/dart/compiler/CompilerTestCase.java
index 2ad25036ce06f5ac07732dcc86a5953f7c08add2..bd889915085607a2e8d2751fb19afd37a6118bba 100644
--- a/compiler/javatests/com/google/dart/compiler/CompilerTestCase.java
+++ b/compiler/javatests/com/google/dart/compiler/CompilerTestCase.java
@@ -28,6 +28,7 @@ import java.io.IOException;
 import java.io.InputStreamReader;
 import java.io.Reader;
 import java.net.URI;
+import java.net.URISyntaxException;
 import java.net.URL;
 import java.util.List;
 import java.util.Map;
@@ -249,6 +250,25 @@ public abstract class CompilerTestCase extends TestCase {
     listener.checkAllErrorsReported();
     return unit;
   }
+  
+  protected DartUnit parseUnitAsSystemLibrary (final String srcName, String sourceCode,
+                                               Object... errors) {
+    DartSourceTest src = new DartSourceTest(srcName, sourceCode, null) {
+      @Override
+      public URI getUri() {
+        try {
+          return new URI("dart:core/" + srcName);

[scheglov, 2012/04/01 18:52:52]

May be URI.create(String) and remove try/catch?

+        } catch (URISyntaxException e) {
+          throw new RuntimeException(e);
+        }
+      }
+    };
+    DartCompilerListenerTest listener = new DartCompilerListenerTest(srcName, errors);
+    ParserContext context = makeParserContext(src, sourceCode, listener);
+    DartUnit unit = makeParser(context).parseUnit(src);
+    listener.checkAllErrorsReported();
+    return unit;
+  }
 
 
   /**