[Offline Pages] Adding missing image/CSS detection in FrameSerializer.

third_party/WebKit/Source/web/WebPageProblemDetectorTest.cpp

+/*
+ * Copyright (C) 2017 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "web/WebPageProblemDetector.h"
+
+#include <utiliy>
+#include <vector>
+
+#include "core/dom/Node.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace blink {
+
+class TestWebPageProblemDetector : public WebPageProblemDetector {
+ public:
+  TestWebPageProblemDetector()
+      : visit_node_called_(false),
+        visiting_done_called_(false),
+        last_visited_node_(nullptr) {}
+
+  void VisitNode(const Node* node) {
+    visit_node_called_ = true;
+    last_visited_node_ = node;
+  }
+
+  void VisitingDone() { visiting_done_called_ = true; }
+
+  bool IsVisitNodeCalled() { return visit_node_called_; }
+  bool IsVisitingDoneCalled() { return visiting_done_called_; }
+  Node* LastVisitedNode() { return last_visited_node_; }
+
+ private:
+  bool visit_node_called_;
+  bool visiting_done_called_;
+  Node* last_visited_node_;
+}
+
+TEST_F(WebPageProblemDetectorTest, VisitNode) {
+  WebPageProblemDetectorCollection detectors;
+  std::unique_ptr<TestWebPageProblemDetector> detector_used(
+      new TestWebPageProblemDetector());
+  std::unique_ptr<TestWebPageProblemDetector> detector_unused(
+      new TestWebPageProblemDetector());
+  detectors_.AddDetector(std::move(detector_used));
+
+  Node test_node;
+  detectors.VisitNode(&test_node);
+
+  EXPECT_TRUE(detector_used->IsVisitNodeCalled());
+  EXPECT_FALSE(detector_used->IsVisitingDoneCalled());
+  EXPECT_EQ(test_node, *detector_used->LastVisitedNode());
+
+  EXPECT_FALSE(detector_unused->IsVisitNodeCalled());
+  EXPECT_FALSE(detector_unused->IsVisitingDoneCalled());
+  EXPECT_EQ(nullptr, *detector_unused->LastVisitedNode());
+}
+
+TEST_F(WebPageProblemDetectorTest, VisitingDone) {
+  WebPageProblemDetectorCollection detectors;
+  std::unique_ptr<TestWebPageProblemDetector> detector_used(
+      new TestWebPageProblemDetector());
+  std::unique_ptr<TestWebPageProblemDetector> detector_unused(
+      new TestWebPageProblemDetector());
+  detectors_.AddDetector(std::move(detector_used));
+
+  Node test_node;
+  detectors.VisitNode(&test_node);
+
+  EXPECT_TRUE(detector_used->IsVisitNodeCalled());
+  EXPECT_FALSE(detector_used->IsVisitingDoneCalled());
+  EXPECT_EQ(test_node, *detector_used->LastVisitedNode());
+
+  EXPECT_FALSE(detector_unused->IsVisitNodeCalled());
+  EXPECT_FALSE(detector_unused->IsVisitingDoneCalled());
+  EXPECT_EQ(nullptr, *detector_unused->LastVisitedNode());
+
+  detectors.VisitingDone();
+  EXPECT_TRUE(detector_used->IsVisitingDoneCalled());
+  EXPECT_FALSE(detector_unused->IsVisitingDoneCalled());
+}
+
+}  // namespace blink