Add support for distilling arbitrary URLs in DOM Distiller Viewer.

components/dom_distiller/content/dom_distiller_viewer_source_unittest.cc

+// Copyright 2014 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 "components/dom_distiller/content/dom_distiller_viewer_source.h"
+
+#include "base/callback.h"
+#include "components/dom_distiller/core/article_entry.h"
+#include "components/dom_distiller/core/dom_distiller_service.h"
+#include "components/dom_distiller/core/dom_distiller_store.h"
+#include "components/dom_distiller/core/dom_distiller_test_util.h"
+#include "components/dom_distiller/core/fake_db.h"
+#include "components/dom_distiller/core/fake_distiller.h"
+#include "components/dom_distiller/core/task_tracker.h"
+#include "components/dom_distiller/core/url_constants.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace dom_distiller {
+
+class FakeViewRequestDelegate : public ViewRequestDelegate {
+ public:
+  virtual ~FakeViewRequestDelegate() {}
+  MOCK_METHOD1(OnArticleReady, void(const DistilledArticleProto* proto));
+};
+
+class TestDomDistillerService : public DomDistillerServiceInterface {
+ public:
+  TestDomDistillerService() {}
+  virtual ~TestDomDistillerService() {}
+
+  MOCK_CONST_METHOD0(GetSyncableService, syncer::SyncableService*());
+  MOCK_METHOD2(AddToList,
+               const std::string(const GURL&, const ArticleAvailableCallback&));
+  MOCK_CONST_METHOD0(GetEntries, std::vector<ArticleEntry>());
+  MOCK_METHOD1(AddObserver, void(DomDistillerObserver*));
+  MOCK_METHOD1(RemoveObserver, void(DomDistillerObserver*));
+  MOCK_METHOD0(ViewUrlImpl, ViewerHandle*());
+  virtual scoped_ptr<ViewerHandle> ViewUrl(ViewRequestDelegate*, const GURL&) {
+    return scoped_ptr<ViewerHandle>(ViewUrlImpl());
+  }
+  MOCK_METHOD0(ViewEntryImpl, ViewerHandle*());
+  virtual scoped_ptr<ViewerHandle> ViewEntry(ViewRequestDelegate*,
+                                             const std::string&) {
+    return scoped_ptr<ViewerHandle>(ViewEntryImpl());
+  }
+  MOCK_METHOD0(RemoveEntryImpl, ArticleEntry*());
+  virtual scoped_ptr<ArticleEntry> RemoveEntry(const std::string&) {
+    return scoped_ptr<ArticleEntry>(RemoveEntryImpl());
+  }
+};
+
+class DomDistillerViewerSourceTest : public testing::Test {};
+
+TEST_F(DomDistillerViewerSourceTest, TestMimeType) {
+  scoped_ptr<TestDomDistillerService> service(new TestDomDistillerService());
+  DomDistillerViewerSource source(service.get(), "myscheme");
+  EXPECT_EQ("text/css", source.GetMimeType(kCssPath));
+  EXPECT_EQ("text/html", source.GetMimeType("anythingelse"));
+}
+
+TEST_F(DomDistillerViewerSourceTest, TestPathUtil) {
+  scoped_ptr<TestDomDistillerService> service(new TestDomDistillerService());
+  DomDistillerViewerSource source(service.get(), "myscheme");
+  const std::string single_key = "mypath?foo=bar";
+  EXPECT_EQ("bar", source.GetValueForKeyInURLPathQuery(single_key, "foo"));
+  const std::string two_keys = "mypath?key1=foo&key2=bar";
+  EXPECT_EQ("foo", source.GetValueForKeyInURLPathQuery(two_keys, "key1"));
+  EXPECT_EQ("bar", source.GetValueForKeyInURLPathQuery(two_keys, "key2"));
+  const std::string multiple_same_key = "mypath?key=foo&key=bar";
+  EXPECT_EQ("foo",
+            source.GetValueForKeyInURLPathQuery(multiple_same_key, "key"));
+}
+
+TEST_F(DomDistillerViewerSourceTest, TestCreatingViewUrlRequest) {
+  scoped_ptr<TestDomDistillerService> service(new TestDomDistillerService());
+  DomDistillerViewerSource source(service.get(), "myscheme");
+  scoped_ptr<FakeViewRequestDelegate> view_request_delegate(
+      new FakeViewRequestDelegate());
+  ViewerHandle* viewer_handle(new ViewerHandle(ViewerHandle::CancelCallback()));
+  EXPECT_CALL(*service.get(), ViewUrlImpl())
+      .WillOnce(testing::Return(viewer_handle));
+  EXPECT_CALL(*service.get(), ViewEntryImpl()).Times(0);
+  source.CreateViewRequest(
+      std::string("?") + kUrlKey + "=http%3A%2F%2Fwww.example.com%2F",
+      view_request_delegate.get());
+}
+
+TEST_F(DomDistillerViewerSourceTest, TestCreatingViewEntryRequest) {
+  scoped_ptr<TestDomDistillerService> service(new TestDomDistillerService());
+  DomDistillerViewerSource source(service.get(), "myscheme");
+  scoped_ptr<FakeViewRequestDelegate> view_request_delegate(
+      new FakeViewRequestDelegate());
+  ViewerHandle* viewer_handle(new ViewerHandle(ViewerHandle::CancelCallback()));
+  EXPECT_CALL(*service.get(), ViewEntryImpl())
+      .WillOnce(testing::Return(viewer_handle));
+  EXPECT_CALL(*service.get(), ViewUrlImpl()).Times(0);
+  source.CreateViewRequest(std::string("?") + kEntryIdKey + "=abc-def",
+                           view_request_delegate.get());
+}
+
+TEST_F(DomDistillerViewerSourceTest, TestCreatingInvalidViewRequest) {
+  scoped_ptr<TestDomDistillerService> service(new TestDomDistillerService());
+  DomDistillerViewerSource source(service.get(), "myscheme");
+  scoped_ptr<FakeViewRequestDelegate> view_request_delegate(
+      new FakeViewRequestDelegate());
+  EXPECT_CALL(*service.get(), ViewEntryImpl()).Times(0);
+  EXPECT_CALL(*service.get(), ViewUrlImpl()).Times(0);
+  // Specify none of the required query parameters.
+  source.CreateViewRequest("?foo=bar", view_request_delegate.get());
+  // Specify both of the required query parameters.
+  source.CreateViewRequest("?" + std::string(kUrlKey) +
+                               "=http%3A%2F%2Fwww.example.com%2F&" +
+                               std::string(kEntryIdKey) + "=abc-def",
+                           view_request_delegate.get());

[shashi, 2014/02/25 21:48:08]

Thank you for adding these tests :).

I was thinking what would be the behavior for
?kUrlKey="chrome-dom-distiller://[some_entry_id]" or some webui scheme. Will
there be an error? Clearly this cannot be tested here but in a browser test. You
do not need to add a browser test for that in this CL.

[nyquist, 2014/02/27 00:07:37]

Added a unit test for both internal chrome:// pages and recursive calls.

+}
+
+}  // namespace dom_distiller