Fixing iframe jank in the local omnibox popup.

chrome/browser/search/suggestion_source_unittest.cc

Index: chrome/browser/search/suggestion_source_unittest.cc
diff --git a/chrome/browser/search/suggestion_source_unittest.cc b/chrome/browser/search/suggestion_source_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..3ccd4592d958c89a35c9e86e949cf669b351a055
--- /dev/null
+++ b/chrome/browser/search/suggestion_source_unittest.cc
@@ -0,0 +1,178 @@
+// Copyright 2013 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 "chrome/browser/search/suggestion_source.h"
+
+#include "base/bind.h"
+#include "base/memory/ref_counted_memory.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/message_loop.h"
+#include "chrome/browser/search/instant_io_context.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/resource_request_info.h"
+#include "content/public/test/mock_resource_context.h"
+#include "content/public/test/test_browser_thread.h"
+#include "googleurl/src/gurl.h"
+#include "grit/browser_resources.h"
+#include "net/url_request/url_request.h"
+#include "net/url_request/url_request_context.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+const int kNonInstantRendererPID = 0;
+const char kNonInstantOrigin[] = "http://evil";
+const int kInstantRendererPID = 1;
+const char kInstantOrigin[] = "chrome-search://instant";
+const int kInvalidRendererPID = 42;
+
+class TestableSuggestionSource : public SuggestionSource {
+ public:
+  using SuggestionSource::StartDataRequest;
+  using SuggestionSource::GetMimeType;
+  using SuggestionSource::ShouldServiceRequest;
+
+ protected:
+  // RenderViewHost is hard to mock in concert with everything else, so stub
+  // this method out for testing.
+  virtual bool GetOrigin(
+      int process_id,
+      int render_view_id,
+      std::string* origin) const OVERRIDE {
+    if (process_id == kInstantRendererPID) {
+      *origin = kInstantOrigin;
+      return true;
+    }
+    if (process_id == kNonInstantRendererPID) {
+      *origin = kNonInstantOrigin;
+      return true;
+    }
+    return false;
+  }
+};
+
+class SuggestionSourceTest : public testing::Test {
+ public:
+  // net::URLRequest wants to be executed with a message loop that has TYPE_IO.
+  // InstantIOContext needs to be created on the UI thread and have everything
+  // else happen on the IO thread. This setup is a hacky way to satisfy all
+  // those constraints.
+  SuggestionSourceTest()
+    : message_loop_(base::MessageLoop::TYPE_IO),
+      ui_thread_(content::BrowserThread::UI, &message_loop_),
+      io_thread_(content::BrowserThread::IO, &message_loop_),
+      instant_io_context_(NULL),
+      response_(NULL) {
+  }
+
+  TestableSuggestionSource* source() { return source_.get(); }
+
+  std::string response_string() {
+    if (response_) {
+      return std::string(reinterpret_cast<const char*>(response_->front()),
+                         response_->size());
+    }
+    return "";
+  }
+
+  net::URLRequest* MockRequest(
+      const std::string& url,
+      bool allocate_info,
+      int render_process_id,
+      int render_view_id) {
+    net::URLRequest* request =
+        new net::URLRequest(GURL(url), NULL,
+                            resource_context_.GetRequestContext());
+    if (allocate_info) {
+      content::ResourceRequestInfo::AllocateForTesting(request,
+                                                       ResourceType::SUB_FRAME,
+                                                       &resource_context_,
+                                                       render_process_id,
+                                                       render_view_id);
+    }
+    return request;
+  }
+
+  void StartDataRequest(
+      const std::string& path_and_query,
+      int render_process_id,
+      int render_view_id) {
+    source()->StartDataRequest(path_and_query, render_process_id,
+                               render_view_id, callback_);
+  }
+
+ private:
+  virtual void SetUp() {
+    source_.reset(new TestableSuggestionSource());
+    callback_ = base::Bind(&SuggestionSourceTest::SaveResponse,
+                           base::Unretained(this));
+    instant_io_context_ = new InstantIOContext;
+    InstantIOContext::SetUserDataOnIO(&resource_context_, instant_io_context_);
+    InstantIOContext::AddInstantProcessOnIO(instant_io_context_,
+                                            kInstantRendererPID);
+    response_ = NULL;
+  }
+
+  virtual void TearDown() {
+    source_.reset();
+  }
+
+  void SaveResponse(base::RefCountedMemory* data) {
+    response_ = data;
+  }
+
+  MessageLoop message_loop_;
+  content::TestBrowserThread ui_thread_;
+  content::TestBrowserThread io_thread_;
+
+  content::MockResourceContext resource_context_;
+  scoped_ptr<TestableSuggestionSource> source_;
+  content::URLDataSource::GotDataCallback callback_;
+  scoped_refptr<InstantIOContext> instant_io_context_;
+  scoped_refptr<base::RefCountedMemory> response_;
+};
+
+TEST_F(SuggestionSourceTest, ShouldServiceRequest) {
+  scoped_ptr<net::URLRequest> request;
+  request.reset(MockRequest("http://suggestion/loader.js",
+                            true, kNonInstantRendererPID, 0));
+  EXPECT_FALSE(source()->ShouldServiceRequest(request.get()));
+  request.reset(MockRequest("chrome-search://bogus/loader.js",
+                            true, kInstantRendererPID, 0));
+  EXPECT_FALSE(source()->ShouldServiceRequest(request.get()));
+  request.reset(MockRequest("chrome-search://suggestion/bogus.js",
+                            true, kInstantRendererPID, 0));
+  EXPECT_FALSE(source()->ShouldServiceRequest(request.get()));
+  request.reset(MockRequest("chrome-search://suggestion/loader.js",
+                            true, kInstantRendererPID, 0));
+  EXPECT_TRUE(source()->ShouldServiceRequest(request.get()));
+  request.reset(MockRequest("chrome-search://suggestion/loader.js",
+                            true, kNonInstantRendererPID, 0));
+  EXPECT_FALSE(source()->ShouldServiceRequest(request.get()));
+  request.reset(MockRequest("chrome-search://suggestion/loader.js",
+                            true, kInvalidRendererPID, 0));
+  EXPECT_FALSE(source()->ShouldServiceRequest(request.get()));
+}
+
+TEST_F(SuggestionSourceTest, GetMimeType) {
+  // URLDataManagerBackend does not include / in path_and_query.
+  EXPECT_EQ("text/html", source()->GetMimeType("loader.html"));
+  EXPECT_EQ("application/javascript", source()->GetMimeType("loader.js"));
+  EXPECT_EQ("", source()->GetMimeType("bogus.html"));
+}
+
+TEST_F(SuggestionSourceTest, StartDataRequest) {
+  StartDataRequest("bogus.html", kInstantRendererPID, 0);
+  EXPECT_TRUE(response_string().empty());
+  StartDataRequest("bogus.html", kNonInstantRendererPID, 0);
+  EXPECT_TRUE(response_string().empty());
+  StartDataRequest("loader.html", kInstantRendererPID, 0);
+  EXPECT_FALSE(response_string().empty());
+  StartDataRequest("loader.js", kInstantRendererPID, 0);
+  EXPECT_FALSE(response_string().empty());
+  EXPECT_NE(std::string::npos, response_string().find(kInstantOrigin));
+  StartDataRequest("loader.js", kNonInstantRendererPID, 0);
+  EXPECT_FALSE(response_string().empty());
+  EXPECT_NE(std::string::npos, response_string().find(kNonInstantOrigin));
+  StartDataRequest("loader.js", kInvalidRendererPID, 0);
+  EXPECT_TRUE(response_string().empty());
+}