chrome/browser/ui/pdf/pdf_browsertest.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/file_util.h"
   6 #include "base/files/file.h"
   7 #include "base/files/file_enumerator.h"
   8 #include "base/hash.h"
   9 #include "base/path_service.h"
  10 #include "base/strings/string_number_conversions.h"
  11 #include "base/strings/string_util.h"
  12 #include "base/strings/utf_string_conversions.h"
  13 #include "chrome/browser/chrome_notification_types.h"
  14 #include "chrome/browser/ui/browser.h"
  15 #include "chrome/browser/ui/browser_window.h"
  16 #include "chrome/browser/ui/tabs/tab_strip_model.h"
  17 #include "chrome/common/chrome_paths.h"
  18 #include "chrome/test/base/in_process_browser_test.h"
  19 #include "chrome/test/base/ui_test_utils.h"
  20 #include "content/public/browser/navigation_controller.h"
  21 #include "content/public/browser/notification_observer.h"
  22 #include "content/public/browser/render_view_host.h"
  23 #include "content/public/browser/web_contents.h"
  24 #include "content/public/test/browser_test_utils.h"
  25 #include "net/test/embedded_test_server/embedded_test_server.h"
  26 #include "third_party/skia/include/core/SkBitmap.h"
  27 #include "ui/base/clipboard/clipboard.h"
  28 #include "ui/gfx/codec/png_codec.h"
  29 #include "ui/gfx/screen.h"
  30
  31 using content::NavigationController;
  32 using content::WebContents;
  33
  34 // Note: All tests in here require the internal PDF plugin, so they're disabled
  35 // in non-official builds. We still compile them though, to prevent bitrot.
  36
  37 namespace {
  38
  39 // Include things like browser frame and scrollbar and make sure we're bigger
  40 // than the test pdf document.
  41 static const int kBrowserWidth = 1000;
  42 static const int kBrowserHeight = 600;
  43
  44 class PDFBrowserTest : public InProcessBrowserTest,
  45                        public testing::WithParamInterface<int>,
  46                        public content::NotificationObserver {
  47  public:
  48   PDFBrowserTest()
  49       : snapshot_different_(true),
  50         next_dummy_search_value_(0),
  51         load_stop_notification_count_(0) {
  52     base::FilePath src_dir;
  53     EXPECT_TRUE(PathService::Get(base::DIR_SOURCE_ROOT, &src_dir));
  54     pdf_test_server_.ServeFilesFromDirectory(src_dir.AppendASCII("pdf/test"));
  55   }
  56
  57  protected:
  58   // Use our own TestServer so that we can serve files from the pdf directory.
  59   net::test_server::EmbeddedTestServer* pdf_test_server() {
  60     return &pdf_test_server_;
  61   }
  62
  63   int load_stop_notification_count() const {
  64     return load_stop_notification_count_;
  65   }
  66
  67   base::FilePath GetPDFTestDir() {
  68     return base::FilePath(base::FilePath::kCurrentDirectory).AppendASCII("..").
  69         AppendASCII("..").AppendASCII("..").AppendASCII("pdf").
  70         AppendASCII("test");
  71   }
  72
  73   void Load() {
  74     // Make sure to set the window size before rendering, as otherwise rendering
  75     // to a smaller window and then expanding leads to slight anti-aliasing
  76     // differences of the text and the pixel comparison fails.
  77     gfx::Rect bounds(gfx::Rect(0, 0, kBrowserWidth, kBrowserHeight));
  78     gfx::Rect screen_bounds =
  79         gfx::Screen::GetNativeScreen()->GetPrimaryDisplay().bounds();
  80     ASSERT_GT(screen_bounds.width(), kBrowserWidth);
  81     ASSERT_GT(screen_bounds.height(), kBrowserHeight);
  82     browser()->window()->SetBounds(bounds);
  83
  84     GURL url(ui_test_utils::GetTestUrl(
  85         GetPDFTestDir(),
  86         base::FilePath(FILE_PATH_LITERAL("pdf_browsertest.pdf"))));
  87     ui_test_utils::NavigateToURL(browser(), url);
  88   }
  89
  90   bool VerifySnapshot(const std::string& expected_filename) {
  91     snapshot_different_ = true;
  92     expected_filename_ = expected_filename;
  93     WebContents* web_contents =
  94         browser()->tab_strip_model()->GetActiveWebContents();
  95     DCHECK(web_contents);
  96
  97     content::RenderWidgetHost* rwh = web_contents->GetRenderViewHost();
  98     rwh->GetSnapshotFromRenderer(gfx::Rect(), base::Bind(
  99         &PDFBrowserTest::GetSnapshotFromRendererCallback, this));
 100
 101     content::RunMessageLoop();
 102
 103     if (snapshot_different_) {
 104       LOG(INFO) << "Rendering didn't match, see result " <<
 105           snapshot_filename_.value().c_str();
 106     }
 107     return !snapshot_different_;
 108   }
 109
 110   void WaitForResponse() {
 111     // Even if the plugin has loaded the data or scrolled, because of how
 112     // pepper painting works, we might not have the data.  One way to force this
 113     // to be flushed is to do a find operation, since on this two-page test
 114     // document, it'll wait for us to flush the renderer message loop twice and
 115     // also the browser's once, at which point we're guaranteed to have updated
 116     // the backingstore.  Hacky, but it works.
 117     // Note that we need to change the text each time, because if we don't the
 118     // renderer code will think the second message is to go to next result, but
 119     // there are none so the plugin will assert.
 120
 121     base::string16 query = base::UTF8ToUTF16(
 122         std::string("xyzxyz" + base::IntToString(next_dummy_search_value_++)));
 123     ASSERT_EQ(0, ui_test_utils::FindInPage(
 124         browser()->tab_strip_model()->GetActiveWebContents(),
 125         query, true, false, NULL, NULL));
 126   }
 127
 128  private:
 129   void GetSnapshotFromRendererCallback(bool success,
 130                                        const SkBitmap& bitmap) {
 131     base::MessageLoopForUI::current()->Quit();
 132     ASSERT_EQ(success, true);
 133     base::FilePath reference = ui_test_utils::GetTestFilePath(
 134         GetPDFTestDir(),
 135         base::FilePath().AppendASCII(expected_filename_));
 136     base::File::Info info;
 137     ASSERT_TRUE(base::GetFileInfo(reference, &info));
 138     int size = static_cast<size_t>(info.size);
 139     scoped_ptr<char[]> data(new char[size]);
 140     ASSERT_EQ(size, base::ReadFile(reference, data.get(), size));
 141
 142     int w, h;
 143     std::vector<unsigned char> decoded;
 144     ASSERT_TRUE(gfx::PNGCodec::Decode(
 145         reinterpret_cast<unsigned char*>(data.get()), size,
 146         gfx::PNGCodec::FORMAT_BGRA, &decoded, &w, &h));
 147     int32* ref_pixels = reinterpret_cast<int32*>(&decoded[0]);
 148
 149     int32* pixels = static_cast<int32*>(bitmap.getPixels());
 150
 151     // Get the background color, and use it to figure out the x-offsets in
 152     // each image.  The reason is that depending on the theme in the OS, the
 153     // same browser width can lead to slightly different plugin sizes, so the
 154     // pdf content will start at different x offsets.
 155     // Also note that the images we saved are cut off before the scrollbar, as
 156     // that'll change depending on the theme, and also cut off vertically so
 157     // that the ui controls don't show up, as those fade-in and so the timing
 158     // will affect their transparency.
 159     int32 bg_color = ref_pixels[0];
 160     int ref_x_offset, snapshot_x_offset;
 161     for (ref_x_offset = 0; ref_x_offset < w; ++ref_x_offset) {
 162       if (ref_pixels[ref_x_offset] != bg_color)
 163         break;
 164     }
 165
 166     for (snapshot_x_offset = 0; snapshot_x_offset < bitmap.width();
 167          ++snapshot_x_offset) {
 168       if (pixels[snapshot_x_offset] != bg_color)
 169         break;
 170     }
 171
 172     int x_max = std::min(
 173         w - ref_x_offset, bitmap.width() - snapshot_x_offset);
 174     int y_max = std::min(h, bitmap.height());
 175     int stride = bitmap.rowBytes();
 176     snapshot_different_ = false;
 177     for (int y = 0; y < y_max && !snapshot_different_; ++y) {
 178       for (int x = 0; x < x_max && !snapshot_different_; ++x) {
 179         if (pixels[y * stride / sizeof(int32) + x + snapshot_x_offset] !=
 180             ref_pixels[y * w + x + ref_x_offset])
 181           snapshot_different_ = true;
 182       }
 183     }
 184
 185     if (snapshot_different_) {
 186       std::vector<unsigned char> png_data;
 187       gfx::PNGCodec::EncodeBGRASkBitmap(bitmap, false, &png_data);
 188       if (base::CreateTemporaryFile(&snapshot_filename_)) {
 189         file_util::WriteFile(snapshot_filename_,
 190             reinterpret_cast<char*>(&png_data[0]), png_data.size());
 191       }
 192     }
 193   }
 194
 195   // content::NotificationObserver
 196   virtual void Observe(int type,
 197                        const content::NotificationSource& source,
 198                        const content::NotificationDetails& details) {
 199     if (type == content::NOTIFICATION_LOAD_STOP) {
 200       load_stop_notification_count_++;
 201     }
 202   }
 203
 204   // True if the snapshot differed from the expected value.
 205   bool snapshot_different_;
 206   // Internal variable used to synchronize to the renderer.
 207   int next_dummy_search_value_;
 208   // The filename of the bitmap to compare the snapshot to.
 209   std::string expected_filename_;
 210   // If the snapshot is different, holds the location where it's saved.
 211   base::FilePath snapshot_filename_;
 212   // How many times we've seen chrome::LOAD_STOP.
 213   int load_stop_notification_count_;
 214
 215   net::test_server::EmbeddedTestServer pdf_test_server_;
 216 };
 217
 218
 219 // TODO(thestig): http://crbug.com/79837
 220 // Tests basic PDF rendering.  This can be broken depending on bad merges with
 221 // the vendor, so it's important that we have basic sanity checking.
 222 IN_PROC_BROWSER_TEST_F(PDFBrowserTest, DISABLED_Basic) {
 223   ASSERT_NO_FATAL_FAILURE(Load());
 224   ASSERT_NO_FATAL_FAILURE(WaitForResponse());
 225   // OS X uses CoreText, and FreeType renders slightly different on Linux and
 226   // Win.
 227 #if defined(OS_MACOSX)
 228   // The bots render differently than locally, see http://crbug.com/142531.
 229   ASSERT_TRUE(VerifySnapshot("pdf_browsertest_mac.png") ||
 230               VerifySnapshot("pdf_browsertest_mac2.png"));
 231 #elif defined(OS_LINUX)
 232   ASSERT_TRUE(VerifySnapshot("pdf_browsertest_linux.png"));
 233 #else
 234   ASSERT_TRUE(VerifySnapshot("pdf_browsertest.png"));
 235 #endif
 236 }
 237
 238 #if (!defined(GOOGLE_CHROME_BUILD) || defined(OS_CHROMEOS)) || \
 239     (defined(OS_LINUX) || defined(OS_MACOSX))
 240 // TODO(sanjeevr): http://crbug.com/79837, http://crbug.com/332778
 241 #define MAYBE_Scroll DISABLED_Scroll
 242 #else
 243 #define MAYBE_Scroll Scroll
 244 #endif
 245 // Tests that scrolling works.
 246 IN_PROC_BROWSER_TEST_F(PDFBrowserTest, MAYBE_Scroll) {
 247   ASSERT_NO_FATAL_FAILURE(Load());
 248
 249   // We use wheel mouse event since that's the only one we can easily push to
 250   // the renderer.  There's no way to push a cross-platform keyboard event at
 251   // the moment.
 252   blink::WebMouseWheelEvent wheel_event;
 253   wheel_event.type = blink::WebInputEvent::MouseWheel;
 254   wheel_event.deltaY = -200;
 255   wheel_event.wheelTicksY = -2;
 256   WebContents* web_contents =
 257       browser()->tab_strip_model()->GetActiveWebContents();
 258   web_contents->GetRenderViewHost()->ForwardWheelEvent(wheel_event);
 259   ASSERT_NO_FATAL_FAILURE(WaitForResponse());
 260
 261   int y_offset = 0;
 262   ASSERT_TRUE(content::ExecuteScriptAndExtractInt(
 263       browser()->tab_strip_model()->GetActiveWebContents(),
 264       "window.domAutomationController.send(plugin.pageYOffset())",
 265       &y_offset));
 266   ASSERT_GT(y_offset, 0);
 267 }
 268
 269 #if (!defined(GOOGLE_CHROME_BUILD) || defined(OS_CHROMEOS)) || \
 270     (defined(OS_LINUX) || defined(OS_MACOSX))
 271 // TODO(thestig): http://crbug.com/79837, http://crbug.com/329912
 272 #define MAYBE_FindAndCopy DISABLED_FindAndCopy
 273 #else
 274 #define MAYBE_FindAndCopy FindAndCopy
 275 #endif
 276 IN_PROC_BROWSER_TEST_F(PDFBrowserTest, MAYBE_FindAndCopy) {
 277   ASSERT_NO_FATAL_FAILURE(Load());
 278   // Verifies that find in page works.
 279   ASSERT_EQ(3, ui_test_utils::FindInPage(
 280       browser()->tab_strip_model()->GetActiveWebContents(),
 281       base::UTF8ToUTF16("adipiscing"),
 282       true, false, NULL, NULL));
 283
 284   // Verify that copying selected text works.
 285   ui::Clipboard* clipboard = ui::Clipboard::GetForCurrentThread();
 286   // Reset the clipboard first.
 287   ui::Clipboard::ObjectMap objects;
 288   ui::Clipboard::ObjectMapParams params;
 289   params.push_back(std::vector<char>());
 290   objects[ui::Clipboard::CBF_TEXT] = params;
 291   clipboard->WriteObjects(ui::CLIPBOARD_TYPE_COPY_PASTE, objects);
 292
 293   browser()->tab_strip_model()->GetActiveWebContents()->
 294       GetRenderViewHost()->Copy();
 295   ASSERT_NO_FATAL_FAILURE(WaitForResponse());
 296
 297   std::string text;
 298   clipboard->ReadAsciiText(ui::CLIPBOARD_TYPE_COPY_PASTE, &text);
 299   ASSERT_EQ("adipiscing", text);
 300 }
 301
 302 const int kLoadingNumberOfParts = 10;
 303
 304 // Tests that loading async pdfs works correctly (i.e. document fully loads).
 305 // This also loads all documents that used to crash, to ensure we don't have
 306 // regressions.
 307 // If it flakes, reopen http://crbug.com/74548.
 308 #if !defined(GOOGLE_CHROME_BUILD)
 309 #define MAYBE_Loading DISABLED_Loading
 310 #else
 311 #define MAYBE_Loading Loading
 312 #endif
 313 IN_PROC_BROWSER_TEST_P(PDFBrowserTest, MAYBE_Loading) {
 314   ASSERT_TRUE(pdf_test_server()->InitializeAndWaitUntilReady());
 315
 316   NavigationController* controller =
 317       &(browser()->tab_strip_model()->GetActiveWebContents()->GetController());
 318   content::NotificationRegistrar registrar;
 319   registrar.Add(this,
 320                 content::NOTIFICATION_LOAD_STOP,
 321                 content::Source<NavigationController>(controller));
 322   std::string base_url = std::string("/");
 323
 324   base::FileEnumerator file_enumerator(
 325       ui_test_utils::GetTestFilePath(GetPDFTestDir(), base::FilePath()),
 326       false,
 327       base::FileEnumerator::FILES,
 328       FILE_PATH_LITERAL("*.pdf"));
 329   for (base::FilePath file_path = file_enumerator.Next();
 330        !file_path.empty();
 331        file_path = file_enumerator.Next()) {
 332     std::string filename = file_path.BaseName().MaybeAsASCII();
 333     ASSERT_FALSE(filename.empty());
 334
 335 #if defined(OS_POSIX)
 336     if (filename == "sample.pdf")
 337       continue;  // Crashes on Mac and Linux.  http://crbug.com/63549
 338 #endif
 339
 340     // Split the test into smaller sub-tests. Each one only loads
 341     // every k-th file.
 342     if (static_cast<int>(base::Hash(filename) % kLoadingNumberOfParts) !=
 343         GetParam()) {
 344       continue;
 345     }
 346
 347     LOG(WARNING) << "PDFBrowserTest.Loading: " << filename;
 348
 349     GURL url = pdf_test_server()->GetURL(base_url + filename);
 350     ui_test_utils::NavigateToURL(browser(), url);
 351
 352     while (true) {
 353       int last_count = load_stop_notification_count();
 354       // We might get extraneous chrome::LOAD_STOP notifications when
 355       // doing async loading.  This happens when the first loader is cancelled
 356       // and before creating a byte-range request loader.
 357       bool complete = false;
 358       ASSERT_TRUE(content::ExecuteScriptAndExtractBool(
 359           browser()->tab_strip_model()->GetActiveWebContents(),
 360           "window.domAutomationController.send(plugin.documentLoadComplete())",
 361           &complete));
 362       if (complete)
 363         break;
 364
 365       // Check if the LOAD_STOP notification could have come while we run a
 366       // nested message loop for the JS call.
 367       if (last_count != load_stop_notification_count())
 368         continue;
 369       content::WaitForLoadStop(
 370           browser()->tab_strip_model()->GetActiveWebContents());
 371     }
 372   }
 373 }
 374
 375 INSTANTIATE_TEST_CASE_P(PDFTestFiles,
 376                         PDFBrowserTest,
 377                         testing::Range(0, kLoadingNumberOfParts));
 378
 379 #if !defined(GOOGLE_CHROME_BUILD) || defined(OS_MACOSX)
 380 // http://crbug.com/315160
 381 #define MAYBE_Action DISABLED_Action
 382 #else
 383 #define MAYBE_Action Action
 384 #endif
 385 IN_PROC_BROWSER_TEST_F(PDFBrowserTest, MAYBE_Action) {
 386   ASSERT_NO_FATAL_FAILURE(Load());
 387
 388   ASSERT_TRUE(content::ExecuteScript(
 389       browser()->tab_strip_model()->GetActiveWebContents(),
 390       "document.getElementsByName('plugin')[0].fitToHeight();"));
 391
 392   std::string zoom1, zoom2;
 393   ASSERT_TRUE(content::ExecuteScriptAndExtractString(
 394       browser()->tab_strip_model()->GetActiveWebContents(),
 395       "window.domAutomationController.send("
 396       "    document.getElementsByName('plugin')[0].getZoomLevel().toString())",
 397       &zoom1));
 398
 399   ASSERT_TRUE(content::ExecuteScript(
 400       browser()->tab_strip_model()->GetActiveWebContents(),
 401       "document.getElementsByName('plugin')[0].fitToWidth();"));
 402
 403   ASSERT_TRUE(content::ExecuteScriptAndExtractString(
 404       browser()->tab_strip_model()->GetActiveWebContents(),
 405       "window.domAutomationController.send("
 406       "    document.getElementsByName('plugin')[0].getZoomLevel().toString())",
 407       &zoom2));
 408   ASSERT_NE(zoom1, zoom2);
 409 }
 410
 411 // Flaky as per http://crbug.com/74549.
 412 IN_PROC_BROWSER_TEST_F(PDFBrowserTest, DISABLED_OnLoadAndReload) {
 413   ASSERT_TRUE(pdf_test_server()->InitializeAndWaitUntilReady());
 414
 415   GURL url = pdf_test_server()->GetURL("/onload_reload.html");
 416   ui_test_utils::NavigateToURL(browser(), url);
 417
 418   content::WindowedNotificationObserver observer(
 419       content::NOTIFICATION_LOAD_STOP,
 420       content::Source<NavigationController>(
 421           &browser()->tab_strip_model()->GetActiveWebContents()->
 422               GetController()));
 423   ASSERT_TRUE(content::ExecuteScript(
 424       browser()->tab_strip_model()->GetActiveWebContents(),
 425       "reloadPDF();"));
 426   observer.Wait();
 427
 428   ASSERT_EQ("success",
 429             browser()->tab_strip_model()->GetActiveWebContents()->
 430                 GetURL().query());
 431 }
 432
 433 }  // namespace