Mozart: Add helpers for building view associates.

mojo/ui/associates/mock_hit_tester.cc

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "mojo/ui/associates/mock_hit_tester.h"
+
+#include "base/bind.h"
+
+namespace mojo {
+namespace ui {
+
+MockHitTester::MockHitTester() {}
+
+MockHitTester::~MockHitTester() {}
+
+void MockHitTester::SetNextResult(
+    mojo::PointPtr point,
+    mojo::gfx::composition::HitTestResultPtr result) {
+  DCHECK(point);
+  DCHECK(result);
+
+  point_ = point.Pass();
+  result_ = result.Pass();
+}
+
+void MockHitTester::HitTest(mojo::PointPtr point,
+                            const HitTestCallback& callback) {
+  DCHECK(point);
+
+  if (point.Equals(point_)) {
+    point_.reset();
+    callback.Run(result_.Pass());
+  } else {
+    callback.Run(mojo::gfx::composition::HitTestResult::New());
+  }
+}
+
+}  // namespace ui
+}  // namespace mojo