Issue 4315. Fix for type of cascade assignment

compiler/javatests/com/google/dart/compiler/type/TypeAnalyzerCompilerTest.java

Index: compiler/javatests/com/google/dart/compiler/type/TypeAnalyzerCompilerTest.java
diff --git a/compiler/javatests/com/google/dart/compiler/type/TypeAnalyzerCompilerTest.java b/compiler/javatests/com/google/dart/compiler/type/TypeAnalyzerCompilerTest.java
index 65b4c8d428b006ab353ff5020afde52a6937086a..6e1794ced91fd8b5975feab6ac2b86581472a9ad 100644
--- a/compiler/javatests/com/google/dart/compiler/type/TypeAnalyzerCompilerTest.java
+++ b/compiler/javatests/com/google/dart/compiler/type/TypeAnalyzerCompilerTest.java
@@ -3225,7 +3225,7 @@ public class TypeAnalyzerCompilerTest extends CompilerTestCase {
         errEx(ParserErrorCode.EXTERNAL_ONLY_METHOD, 5, 16, 6),
         errEx(ParserErrorCode.EXTERNAL_ONLY_METHOD, 6, 16, 6));
   }
-  
+
   /**
    * Methods with "external" cannot have body.
    */
@@ -3249,6 +3249,46 @@ public class TypeAnalyzerCompilerTest extends CompilerTestCase {
         errEx(ParserErrorCode.EXTERNAL_ABSTRACT, 7, 12, 8));
   }
 
+  /**
+   * <p>
+   * http://code.google.com/p/dart/issues/detail?id=4315
+   */
+  public void test_cascade_propertyAccess() throws Exception {
+    AnalyzeLibraryResult libraryResult = analyzeLibrary(
+        "// filler filler filler filler filler filler filler filler filler filler",
+        "class A {",
+        "  int f;",
+        "}",
+        "main() {",
+        "  A a = new A();",
+        "  a",
+        "    ..f = 1",
+        "    ..f = 2;",
+        "}",
+        "");
+    assertErrors(libraryResult.getErrors());
+  }
+  
+  /**
+   * <p>
+   * http://code.google.com/p/dart/issues/detail?id=4315
+   */
+  public void test_cascade_methodInvocation() throws Exception {
+    AnalyzeLibraryResult libraryResult = analyzeLibrary(
+        "// filler filler filler filler filler filler filler filler filler filler",
+        "class A {",
+        "  int m() {}",
+        "}",
+        "main() {",
+        "  A a = new A();",
+        "  a",
+        "    ..m()",
+        "    ..m();",
+        "}",
+        "");
+    assertErrors(libraryResult.getErrors());
+  }
+
   private static <T extends DartNode> T findNode(
       AnalyzeLibraryResult libraryResult,
       final Class<T> clazz,