Turn compile time errors related to missing getters and setters into invocation

tests/language/invocation_mirror_test.dart

Index: tests/language/invocation_mirror_test.dart
===================================================================
--- tests/language/invocation_mirror_test.dart	(revision 16462)
+++ tests/language/invocation_mirror_test.dart	(working copy)
@@ -41,8 +41,8 @@
     if (positional == null) {
       Expect.isTrue(im.isGetter, "$name:isGetter");
       Expect.isFalse(im.isSetter, "$name:isSetter");
-      Expect.equals(null, im.positionalArguments, "$name:positional");
-      Expect.equals(null, im.namedArguments, "$name:named");
+      Expect.equals(0, im.positionalArguments.length, "$name:#positional");
+      Expect.equals(0, im.namedArguments.length, "$name:#named");

[Lasse Reichstein Nielsen, 2013/01/02 09:59:29]

This change is incorrect.
The API specification for InvocationMirror states that if isGetter is true, then
both positional and named arguments must be null.
Now, I'm quite open to changing that if you have reasons to prefer using empty
unmodifiable collections instead - it's actually quite reasonable, and if you
have the (reusable) objects anyway, it should be no more expensive than passing
null.

[regis, 2013/01/02 17:37:21]

The Language Spec has refined the description of the InvocationMirror instance
passed to noSuchMethod(). In the case of a getter, positionalArguments is an
empty array and namedArguments is an empty map. Please, update the API spec
accordingly. Thanks.

       return;
     }
     Expect.isTrue(im.isSetter, "$name:isSetter");
@@ -50,7 +50,7 @@
     Expect.equals(1, im.positionalArguments.length, "$name:#positional");
     Expect.equals(positional[0], im.positionalArguments[0],
                   "$name:positional[0]");
-    Expect.equals(null, im.namedArguments, "$name:named");
+    Expect.equals(0, im.namedArguments.length, "$name:#named");
     return;
   }
   Expect.isTrue(im.isMethod, "$name:isMethod");
@@ -166,7 +166,7 @@
     testInvocationMirror(super - 4, '-', [4], {});
     testInvocationMirror(-super, 'unary-', [], {});
     testInvocationMirror(super[42], '[]', [42], {});
-    testInvocationMirror((super[37] = 42).last, '[]=', [37, 42], {});
+    testInvocationMirror((){super[37] = 42; return last;}(), '[]=', [37, 42], {});
 
     // Wrong arguments to existing function.
     testInvocationMirror(super.flif(), "flif", [], {});
@@ -234,7 +234,7 @@
   test(() => o.toString(x: 37));
   test(() => o.hashCode = 42);
   test(() => o.hashCode());  // Thrown by int.noSuchMethod.
-  test(n.flif);  // Extracted method has no noSuchMethod.
+  test(() => (n.flif)());  // Extracted method has no noSuchMethod.
 }
 
 main() {