TBR Add missed test file

pkg/analyzer/test/src/task/strong_mode_test.dart

+// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+library test.src.task.strong_mode_test;
+
+import 'package:analyzer/src/generated/ast.dart';
+import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer/src/task/strong_mode.dart';
+import 'package:analyzer/task/dart.dart';
+import 'package:unittest/unittest.dart';
+
+import '../../reflective_tests.dart';
+import '../../utils.dart';
+import '../context/abstract_context.dart';
+
+main() {
+  initializeTestEnvironment();
+  runReflectiveTests(InferrenceFinderTest);
+}
+
+@reflectiveTest
+class InferrenceFinderTest extends AbstractContextTest {
+  void test_creation() {
+    InferrenceFinder finder = new InferrenceFinder();
+    expect(finder, isNotNull);
+    expect(finder.classes, isEmpty);
+    expect(finder.staticVariables, isEmpty);
+  }
+
+  void test_visit() {
+    Source source = addSource(
+        '/test.dart',
+        r'''
+const c = 1;
+final f = '';
+var v = const A();
+class A {
+  static final fa = 0;
+  const A();
+}
+class B extends A {
+  static const cb = 1;
+  static vb = 0;
+  const ci = 2;
+  final fi = '';
+  var vi;
+}
+class C = Object with A;
+typedef int F(int x);
+''');
+    computeResult(source, PARSED_UNIT);
+    CompilationUnit unit = outputs[PARSED_UNIT];
+    InferrenceFinder finder = new InferrenceFinder();
+    unit.accept(finder);
+    expect(finder.classes, hasLength(3));
+    expect(finder.staticVariables, hasLength(6));
+  }
+}