first incomplete cut at invocation/accessor suggestions

pkg/analysis_server/test/domain_completion_test.dart

Index: pkg/analysis_server/test/domain_completion_test.dart
diff --git a/pkg/analysis_server/test/domain_completion_test.dart b/pkg/analysis_server/test/domain_completion_test.dart
index c64fa6f8ab11ec62c718d554b86f9bf7082ecafa..c41ad34b4dcc190111389b302bf8584f45a9290b 100644
--- a/pkg/analysis_server/test/domain_completion_test.dart
+++ b/pkg/analysis_server/test/domain_completion_test.dart
@@ -177,6 +177,15 @@ class CompletionTest extends AbstractAnalysisTest {
     });
   }
 
+  test_invocation() {
+    addTestFile('class A {b() {}} main() {A a; a.^}');
+    return getSuggestions().then((_) {
+      expect(replacementOffset, equals(completionOffset));
+      expect(replacementLength, equals(0));
+      assertHasResult(CompletionSuggestionKind.METHOD, 'b');
+    });
+  }
+
   test_topLevel() {
     addTestFile('''
       typedef foo();