Syntactic support for redirecting factory constructors (issue 3968)

compiler/javatests/com/google/dart/compiler/parser/SyntaxTest.java

Index: compiler/javatests/com/google/dart/compiler/parser/SyntaxTest.java
===================================================================
--- compiler/javatests/com/google/dart/compiler/parser/SyntaxTest.java	(revision 11396)
+++ compiler/javatests/com/google/dart/compiler/parser/SyntaxTest.java	(working copy)
@@ -7,6 +7,7 @@
 import com.google.common.base.Joiner;
 import com.google.dart.compiler.DartCompilerListener;
 import com.google.dart.compiler.DartSourceTest;
+import com.google.dart.compiler.ast.DartAnnotation;
 import com.google.dart.compiler.ast.DartArrayLiteral;
 import com.google.dart.compiler.ast.DartBinaryExpression;
 import com.google.dart.compiler.ast.DartClass;
@@ -19,7 +20,6 @@
 import com.google.dart.compiler.ast.DartIdentifier;
 import com.google.dart.compiler.ast.DartIntegerLiteral;
 import com.google.dart.compiler.ast.DartMapLiteral;
-import com.google.dart.compiler.ast.DartAnnotation;
 import com.google.dart.compiler.ast.DartMethodDefinition;
 import com.google.dart.compiler.ast.DartNode;
 import com.google.dart.compiler.ast.DartPropertyAccess;
@@ -62,6 +62,20 @@
         "}"));
   }
 
+  public void test_redirectingFactoryConstructor_const() {
+    parseUnit("redirecting.dart", Joiner.on("\n").join(
+        "class B {",
+        "  const factory B.n(int x) = A.m;",
+        "}"));
+  }
+
+  public void test_redirectingFactoryConstructor_nonConst() {
+    parseUnit("redirecting.dart", Joiner.on("\n").join(
+        "class B {",
+        "  factory B.n(int x) = A.m;",
+        "}"));
+  }
+
   public void test_setter() {
     parseUnit("setter.dart", Joiner.on("\n").join(
         "class G {",