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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/command_line.h" | |
6 #include "base/file_path.h" | |
7 #include "base/memory/scoped_ptr.h" | |
8 #include "base/string_number_conversions.h" | |
9 #include "base/test/test_timeouts.h" | |
10 #include "chrome/app/chrome_command_ids.h" | |
11 #include "chrome/browser/defaults.h" | |
12 #include "chrome/common/chrome_paths.h" | |
13 #include "chrome/common/chrome_switches.h" | |
14 #include "chrome/common/url_constants.h" | |
15 #include "chrome/test/automation/automation_proxy.h" | |
16 #include "chrome/test/automation/browser_proxy.h" | |
17 #include "chrome/test/automation/tab_proxy.h" | |
18 #include "chrome/test/automation/window_proxy.h" | |
19 #include "chrome/test/ui/ui_test.h" | |
20 #include "googleurl/src/gurl.h" | |
21 #include "net/base/net_util.h" | |
22 #include "net/test/test_server.h" | |
23 | |
24 namespace { | |
25 | |
26 class SessionRestoreUITest : public UITest { | |
27 protected: | |
28 SessionRestoreUITest() : UITest() { | |
29 FilePath path_prefix = test_data_directory_.AppendASCII("session_history"); | |
30 | |
31 url1_ = net::FilePathToFileURL(path_prefix.AppendASCII("bot1.html")); | |
32 url2_ = net::FilePathToFileURL(path_prefix.AppendASCII("bot2.html")); | |
33 url3_ = net::FilePathToFileURL(path_prefix.AppendASCII("bot3.html")); | |
34 } | |
35 | |
36 virtual void QuitBrowserAndRestore(int expected_tab_count) { | |
37 #if defined(OS_CHROMEOS) || defined(OS_MACOSX) | |
38 set_shutdown_type(ProxyLauncher::USER_QUIT); | |
39 #endif | |
40 UITest::TearDown(); | |
41 | |
42 clear_profile_ = false; | |
43 | |
44 // Clear launch_arguments so that the URL arg doesn't get added on restart. | |
45 launch_arguments_ = CommandLine(launch_arguments_.GetProgram()); | |
46 | |
47 launch_arguments_.AppendSwitchASCII(switches::kRestoreLastSession, | |
48 base::IntToString(expected_tab_count)); | |
49 UITest::SetUp(); | |
50 } | |
51 | |
52 void CloseWindow(int window_index, int initial_count) { | |
53 scoped_refptr<BrowserProxy> browser_proxy( | |
54 automation()->GetBrowserWindow(window_index)); | |
55 ASSERT_TRUE(browser_proxy.get()); | |
56 ASSERT_TRUE(browser_proxy->RunCommand(IDC_CLOSE_WINDOW)); | |
57 int window_count; | |
58 ASSERT_TRUE(automation()->GetBrowserWindowCount(&window_count)); | |
59 ASSERT_EQ(initial_count - 1, window_count); | |
60 } | |
61 | |
62 void AssertOneWindowWithOneTab() { | |
63 int window_count; | |
64 ASSERT_TRUE(automation()->GetBrowserWindowCount(&window_count)); | |
65 ASSERT_EQ(1, window_count); | |
66 GURL url; | |
67 AssertWindowHasOneTab(0, &url); | |
68 } | |
69 | |
70 void AssertWindowHasOneTab(int window_index, GURL* url) { | |
71 scoped_refptr<BrowserProxy> browser_proxy( | |
72 automation()->GetBrowserWindow(window_index)); | |
73 ASSERT_TRUE(browser_proxy.get()); | |
74 | |
75 int tab_count; | |
76 ASSERT_TRUE(browser_proxy->GetTabCount(&tab_count)); | |
77 ASSERT_EQ(1, tab_count); | |
78 | |
79 int active_tab_index; | |
80 ASSERT_TRUE(browser_proxy->GetActiveTabIndex(&active_tab_index)); | |
81 ASSERT_EQ(0, active_tab_index); | |
82 | |
83 scoped_refptr<TabProxy> tab_proxy(browser_proxy->GetActiveTab()); | |
84 ASSERT_TRUE(tab_proxy.get()); | |
85 ASSERT_TRUE(tab_proxy->WaitForTabToBeRestored( | |
86 TestTimeouts::action_max_timeout_ms())); | |
87 | |
88 ASSERT_TRUE(tab_proxy->GetCurrentURL(url)); | |
89 } | |
90 | |
91 GURL url1_; | |
92 GURL url2_; | |
93 GURL url3_; | |
94 | |
95 private: | |
96 DISALLOW_COPY_AND_ASSIGN(SessionRestoreUITest); | |
97 }; | |
98 | |
99 TEST_F(SessionRestoreUITest, Basic) { | |
100 NavigateToURL(url1_); | |
101 NavigateToURL(url2_); | |
102 | |
103 QuitBrowserAndRestore(1); | |
104 | |
105 // NOTE: Don't use GetActiveWindow here, when run with the screen locked | |
106 // active windows returns NULL. | |
107 int window_count; | |
108 ASSERT_TRUE(automation()->GetBrowserWindowCount(&window_count)); | |
109 ASSERT_EQ(1, window_count); | |
110 scoped_refptr<BrowserProxy> browser_proxy(automation()->GetBrowserWindow(0)); | |
111 ASSERT_TRUE(browser_proxy.get()); | |
112 scoped_refptr<TabProxy> tab_proxy(browser_proxy->GetTab(0)); | |
113 ASSERT_TRUE(tab_proxy->WaitForTabToBeRestored( | |
114 TestTimeouts::action_max_timeout_ms())); | |
115 | |
116 ASSERT_EQ(url2_, GetActiveTabURL()); | |
117 ASSERT_EQ(AUTOMATION_MSG_NAVIGATION_SUCCESS, tab_proxy->GoBack()); | |
118 ASSERT_EQ(url1_, GetActiveTabURL()); | |
119 } | |
120 | |
121 TEST_F(SessionRestoreUITest, RestoresForwardAndBackwardNavs) { | |
122 NavigateToURL(url1_); | |
123 NavigateToURL(url2_); | |
124 NavigateToURL(url3_); | |
125 | |
126 scoped_refptr<TabProxy> active_tab(GetActiveTab()); | |
127 ASSERT_TRUE(active_tab.get()); | |
128 ASSERT_TRUE(active_tab->GoBack()); | |
129 | |
130 QuitBrowserAndRestore(1); | |
131 | |
132 // NOTE: Don't use GetActiveWindow here, when run with the screen locked | |
133 // active windows returns NULL. | |
134 int window_count; | |
135 ASSERT_TRUE(automation()->GetBrowserWindowCount(&window_count)); | |
136 ASSERT_EQ(1, window_count); | |
137 scoped_refptr<BrowserProxy> browser_proxy(automation()->GetBrowserWindow(0)); | |
138 ASSERT_TRUE(browser_proxy.get()); | |
139 scoped_refptr<TabProxy> tab_proxy(browser_proxy->GetTab(0)); | |
140 ASSERT_TRUE(tab_proxy->WaitForTabToBeRestored( | |
141 TestTimeouts::action_max_timeout_ms())); | |
142 | |
143 ASSERT_TRUE(GetActiveTabURL() == url2_); | |
144 ASSERT_TRUE(tab_proxy->GoForward()); | |
145 ASSERT_TRUE(GetActiveTabURL() == url3_); | |
146 ASSERT_TRUE(tab_proxy->GoBack()); | |
147 ASSERT_TRUE(GetActiveTabURL() == url2_); | |
148 | |
149 // Test renderer-initiated back/forward as well. | |
150 GURL go_back_url("javascript:history.back();"); | |
151 ASSERT_TRUE(tab_proxy->NavigateToURL(go_back_url)); | |
152 ASSERT_TRUE(GetActiveTabURL() == url1_); | |
153 } | |
154 | |
155 // Tests that the SiteInstances used for entries in a restored tab's history | |
156 // are given appropriate max page IDs, so that going back to a restored | |
157 // cross-site page and then forward again works. (Bug 1204135) | |
158 TEST_F(SessionRestoreUITest, RestoresCrossSiteForwardAndBackwardNavs) { | |
159 net::TestServer test_server(net::TestServer::TYPE_HTTP, | |
160 net::TestServer::kLocalhost, | |
161 FilePath(FILE_PATH_LITERAL("chrome/test/data"))); | |
162 ASSERT_TRUE(test_server.Start()); | |
163 | |
164 GURL cross_site_url(test_server.GetURL("files/title2.html")); | |
165 | |
166 // Visit URLs on different sites. | |
167 NavigateToURL(url1_); | |
168 NavigateToURL(cross_site_url); | |
169 NavigateToURL(url2_); | |
170 | |
171 scoped_refptr<TabProxy> active_tab(GetActiveTab()); | |
172 ASSERT_TRUE(active_tab.get()); | |
173 ASSERT_TRUE(active_tab->GoBack()); | |
174 | |
175 QuitBrowserAndRestore(1); | |
176 | |
177 // NOTE: Don't use GetActiveWindow here, when run with the screen locked | |
178 // active windows returns NULL. | |
179 int window_count; | |
180 ASSERT_TRUE(automation()->GetBrowserWindowCount(&window_count)); | |
181 ASSERT_EQ(1, window_count); | |
182 scoped_refptr<BrowserProxy> browser_proxy(automation()->GetBrowserWindow(0)); | |
183 ASSERT_TRUE(browser_proxy.get()); | |
184 int tab_count; | |
185 ASSERT_TRUE(browser_proxy->GetTabCount(&tab_count)); | |
186 ASSERT_EQ(1, tab_count); | |
187 scoped_refptr<TabProxy> tab_proxy(browser_proxy->GetTab(0)); | |
188 ASSERT_TRUE(tab_proxy.get()); | |
189 ASSERT_TRUE(tab_proxy->WaitForTabToBeRestored( | |
190 TestTimeouts::action_max_timeout_ms())); | |
191 | |
192 // Check that back and forward work as expected. | |
193 GURL url; | |
194 ASSERT_TRUE(tab_proxy->GetCurrentURL(&url)); | |
195 ASSERT_EQ(cross_site_url, url); | |
196 | |
197 ASSERT_TRUE(tab_proxy->GoBack()); | |
198 ASSERT_TRUE(tab_proxy->GetCurrentURL(&url)); | |
199 ASSERT_EQ(url1_, url); | |
200 | |
201 ASSERT_TRUE(tab_proxy->GoForward()); | |
202 ASSERT_TRUE(tab_proxy->GetCurrentURL(&url)); | |
203 ASSERT_EQ(cross_site_url, url); | |
204 | |
205 // Test renderer-initiated back/forward as well. | |
206 GURL go_forward_url("javascript:history.forward();"); | |
207 ASSERT_TRUE(tab_proxy->NavigateToURL(go_forward_url)); | |
208 ASSERT_TRUE(tab_proxy->GetCurrentURL(&url)); | |
209 ASSERT_EQ(url2_, url); | |
210 } | |
211 | |
212 TEST_F(SessionRestoreUITest, TwoTabsSecondSelected) { | |
213 NavigateToURL(url1_); | |
214 | |
215 // NOTE: Don't use GetActiveWindow here, when run with the screen locked | |
216 // active windows returns NULL. | |
217 int window_count; | |
218 ASSERT_TRUE(automation()->GetBrowserWindowCount(&window_count)); | |
219 ASSERT_EQ(1, window_count); | |
220 scoped_refptr<BrowserProxy> browser_proxy(automation()->GetBrowserWindow(0)); | |
221 ASSERT_TRUE(browser_proxy.get()); | |
222 | |
223 ASSERT_TRUE(browser_proxy->AppendTab(url2_)); | |
224 | |
225 QuitBrowserAndRestore(2); | |
226 browser_proxy = NULL; | |
227 | |
228 ASSERT_TRUE(automation()->GetBrowserWindowCount(&window_count)); | |
229 ASSERT_EQ(1, window_count); | |
230 browser_proxy = automation()->GetBrowserWindow(0); | |
231 | |
232 int tab_count; | |
233 ASSERT_TRUE(browser_proxy->GetTabCount(&tab_count)); | |
234 ASSERT_EQ(2, tab_count); | |
235 | |
236 int active_tab_index; | |
237 ASSERT_TRUE(browser_proxy->GetActiveTabIndex(&active_tab_index)); | |
238 ASSERT_EQ(1, active_tab_index); | |
239 | |
240 scoped_refptr<TabProxy> tab_proxy(browser_proxy->GetActiveTab()); | |
241 ASSERT_TRUE(tab_proxy.get()); | |
242 ASSERT_TRUE(tab_proxy->WaitForTabToBeRestored( | |
243 TestTimeouts::action_max_timeout_ms())); | |
244 | |
245 ASSERT_EQ(url2_, GetActiveTabURL()); | |
246 | |
247 ASSERT_TRUE(browser_proxy->ActivateTab(0)); | |
248 tab_proxy = browser_proxy->GetActiveTab(); | |
249 ASSERT_TRUE(tab_proxy.get()); | |
250 ASSERT_TRUE(tab_proxy->WaitForTabToBeRestored( | |
251 TestTimeouts::action_max_timeout_ms())); | |
252 | |
253 ASSERT_EQ(url1_, GetActiveTabURL()); | |
254 } | |
255 | |
256 // Creates two tabs, closes one, quits and makes sure only one tab is restored. | |
257 TEST_F(SessionRestoreUITest, ClosedTabStaysClosed) { | |
258 NavigateToURL(url1_); | |
259 | |
260 // NOTE: Don't use GetActiveWindow here, when run with the screen locked | |
261 // active windows returns NULL. | |
262 int window_count; | |
263 ASSERT_TRUE(automation()->GetBrowserWindowCount(&window_count)); | |
264 ASSERT_EQ(1, window_count); | |
265 scoped_refptr<BrowserProxy> browser_proxy(automation()->GetBrowserWindow(0)); | |
266 ASSERT_TRUE(browser_proxy.get()); | |
267 scoped_refptr<TabProxy> tab_proxy(browser_proxy->GetTab(0)); | |
268 ASSERT_TRUE(tab_proxy.get()); | |
269 | |
270 ASSERT_TRUE(browser_proxy->AppendTab(url2_)); | |
271 | |
272 scoped_refptr<TabProxy> active_tab(browser_proxy->GetActiveTab()); | |
273 ASSERT_TRUE(active_tab.get()); | |
274 ASSERT_TRUE(active_tab->Close(true)); | |
275 | |
276 QuitBrowserAndRestore(1); | |
277 browser_proxy = NULL; | |
278 tab_proxy = NULL; | |
279 | |
280 AssertOneWindowWithOneTab(); | |
281 | |
282 ASSERT_EQ(url1_, GetActiveTabURL()); | |
283 } | |
284 | |
285 // Test to verify that the print preview tab is not restored. | |
286 TEST_F(SessionRestoreUITest, DontRestorePrintPreviewTabTest) { | |
287 NavigateToURL(url1_); | |
288 | |
289 int window_count; | |
290 ASSERT_TRUE(automation()->GetBrowserWindowCount(&window_count)); | |
291 ASSERT_EQ(1, window_count); | |
292 scoped_refptr<BrowserProxy> browser_proxy(automation()->GetBrowserWindow(0)); | |
293 ASSERT_TRUE(browser_proxy.get()); | |
294 | |
295 // Append the print preview tab. | |
296 GURL printPreviewURL(chrome::kChromeUIPrintURL); | |
297 ASSERT_TRUE(browser_proxy->AppendTab(printPreviewURL)); | |
298 | |
299 scoped_refptr<TabProxy> active_tab(browser_proxy->GetActiveTab()); | |
300 ASSERT_TRUE(active_tab.get()); | |
301 ASSERT_EQ(printPreviewURL, GetActiveTabURL()); | |
302 | |
303 // Restart and make sure we have only one window with one tab and the url | |
304 // is url1_. | |
305 QuitBrowserAndRestore(1); | |
306 browser_proxy = NULL; | |
307 | |
308 AssertOneWindowWithOneTab(); | |
309 | |
310 ASSERT_EQ(url1_, GetActiveTabURL()); | |
311 } | |
312 | |
313 // Creates a tabbed browser and popup and makes sure we restore both. | |
314 TEST_F(SessionRestoreUITest, NormalAndPopup) { | |
315 if (!browser_defaults::kRestorePopups) | |
316 return; // Test only applicable if restoring popups. | |
317 | |
318 NavigateToURL(url1_); | |
319 | |
320 // Make sure we have one window. | |
321 int window_count; | |
322 ASSERT_TRUE(automation()->GetBrowserWindowCount(&window_count)); | |
323 ASSERT_EQ(1, window_count); | |
324 | |
325 // Open a popup. | |
326 ASSERT_TRUE(automation()->OpenNewBrowserWindow(Browser::TYPE_POPUP, | |
327 true)); | |
328 ASSERT_TRUE(automation()->GetBrowserWindowCount(&window_count)); | |
329 ASSERT_EQ(2, window_count); | |
330 | |
331 scoped_refptr<BrowserProxy> popup(automation()->GetBrowserWindow(1)); | |
332 ASSERT_TRUE(popup.get()); | |
333 | |
334 scoped_refptr<TabProxy> tab(popup->GetTab(0)); | |
335 ASSERT_TRUE(tab.get()); | |
336 | |
337 ASSERT_EQ(AUTOMATION_MSG_NAVIGATION_SUCCESS, tab->NavigateToURL(url1_)); | |
338 | |
339 // Simulate an exit by shuting down the session service. If we don't do this | |
340 // the first window close is treated as though the user closed the window | |
341 // and won't be restored. | |
342 ASSERT_TRUE(popup->ShutdownSessionService()); | |
343 | |
344 tab = NULL; | |
345 popup = NULL; | |
346 | |
347 // Restart and make sure we have only one window with one tab and the url | |
348 // is url1_. | |
349 QuitBrowserAndRestore(1); | |
350 | |
351 ASSERT_TRUE(automation()->GetBrowserWindowCount(&window_count)); | |
352 ASSERT_EQ(2, window_count); | |
353 | |
354 scoped_refptr<BrowserProxy> browser_proxy1( | |
355 automation()->GetBrowserWindow(0)); | |
356 ASSERT_TRUE(browser_proxy1.get()); | |
357 | |
358 scoped_refptr<BrowserProxy> browser_proxy2( | |
359 automation()->GetBrowserWindow(1)); | |
360 ASSERT_TRUE(browser_proxy2.get()); | |
361 | |
362 Browser::Type type1, type2; | |
363 ASSERT_TRUE(browser_proxy1->GetType(&type1)); | |
364 ASSERT_TRUE(browser_proxy2->GetType(&type2)); | |
365 | |
366 // The order of whether the normal window or popup is first depends upon | |
367 // activation order, which is not necessarily consistant across runs. | |
368 if (type1 == Browser::TYPE_TABBED) { | |
369 EXPECT_EQ(type2, Browser::TYPE_POPUP); | |
370 } else { | |
371 EXPECT_EQ(type1, Browser::TYPE_POPUP); | |
372 EXPECT_EQ(type2, Browser::TYPE_TABBED); | |
373 } | |
374 } | |
375 | |
376 #if !defined(OS_MACOSX) | |
377 // This test doesn't apply to the Mac version; see | |
378 // LaunchAnotherBrowserBlockUntilClosed for details. | |
379 | |
380 // Launches an app window, closes tabbed browser, launches and makes sure | |
381 // we restore the tabbed browser url. | |
382 // Flaky: http://crbug.com/29110 | |
383 TEST_F(SessionRestoreUITest, | |
384 DISABLED_RestoreAfterClosingTabbedBrowserWithAppAndLaunching) { | |
385 NavigateToURL(url1_); | |
386 | |
387 // Launch an app. | |
388 | |
389 bool include_testing_id_orig = include_testing_id_; | |
390 include_testing_id_ = false; | |
391 clear_profile_ = false; | |
392 CommandLine app_launch_arguments = launch_arguments_; | |
393 app_launch_arguments.AppendSwitchASCII(switches::kApp, url2_.spec()); | |
394 LaunchAnotherBrowserBlockUntilClosed(app_launch_arguments); | |
395 ASSERT_TRUE(automation()->WaitForWindowCountToBecome(2)); | |
396 | |
397 // Close the first window. The only window left is the App window. | |
398 CloseWindow(0, 2); | |
399 | |
400 // Restore the session, which should bring back the first window with url1_. | |
401 // First restore the settings so we can connect to the browser. | |
402 include_testing_id_ = include_testing_id_orig; | |
403 // Restore the session with 1 tab. | |
404 QuitBrowserAndRestore(1); | |
405 | |
406 AssertOneWindowWithOneTab(); | |
407 | |
408 ASSERT_EQ(url1_, GetActiveTabURL()); | |
409 } | |
410 | |
411 #endif // !OS_MACOSX | |
412 | |
413 // Creates two windows, closes one, restores, make sure only one window open. | |
414 TEST_F(SessionRestoreUITest, TwoWindowsCloseOneRestoreOnlyOne) { | |
415 NavigateToURL(url1_); | |
416 | |
417 // Make sure we have one window. | |
418 int window_count; | |
419 ASSERT_TRUE(automation()->GetBrowserWindowCount(&window_count)); | |
420 ASSERT_EQ(1, window_count); | |
421 | |
422 // Open a second window. | |
423 ASSERT_TRUE(automation()->OpenNewBrowserWindow(Browser::TYPE_TABBED, | |
424 true)); | |
425 ASSERT_TRUE(automation()->GetBrowserWindowCount(&window_count)); | |
426 ASSERT_EQ(2, window_count); | |
427 | |
428 // Close it. | |
429 CloseWindow(1, 2); | |
430 | |
431 // Restart and make sure we have only one window with one tab and the url | |
432 // is url1_. | |
433 QuitBrowserAndRestore(1); | |
434 | |
435 AssertOneWindowWithOneTab(); | |
436 | |
437 ASSERT_EQ(url1_, GetActiveTabURL()); | |
438 } | |
439 | |
440 // Make sure after a restore the number of processes matches that of the number | |
441 // of processes running before the restore. This creates a new tab so that | |
442 // we should have two new tabs running. (This test will pass in both | |
443 // process-per-site and process-per-site-instance, because we treat the new tab | |
444 // as a special case in process-per-site-instance so that it only ever uses one | |
445 // process.) | |
446 // | |
447 // Flaky: http://code.google.com/p/chromium/issues/detail?id=52022 | |
448 // Unfortunately, the fix at http://codereview.chromium.org/6546078 | |
449 // breaks NTP background image refreshing, so ThemeSource had to revert to | |
450 // replacing the existing data source. | |
451 TEST_F(SessionRestoreUITest, DISABLED_ShareProcessesOnRestore) { | |
452 scoped_refptr<BrowserProxy> browser_proxy(automation()->GetBrowserWindow(0)); | |
453 ASSERT_TRUE(browser_proxy.get() != NULL); | |
454 int tab_count; | |
455 ASSERT_TRUE(browser_proxy->GetTabCount(&tab_count)); | |
456 | |
457 // Create two new tabs. | |
458 ASSERT_TRUE(browser_proxy->RunCommand(IDC_NEW_TAB)); | |
459 ASSERT_TRUE(browser_proxy->RunCommand(IDC_NEW_TAB)); | |
460 int new_tab_count; | |
461 ASSERT_TRUE(browser_proxy->GetTabCount(&new_tab_count)); | |
462 ASSERT_EQ(tab_count + 2, new_tab_count); | |
463 | |
464 int expected_process_count = 0; | |
465 ASSERT_TRUE(GetBrowserProcessCount(&expected_process_count)); | |
466 int expected_tab_count = new_tab_count; | |
467 | |
468 // Restart. | |
469 browser_proxy = NULL; | |
470 QuitBrowserAndRestore(3); | |
471 | |
472 // Wait for each tab to finish being restored, then make sure the process | |
473 // count matches. | |
474 browser_proxy = automation()->GetBrowserWindow(0); | |
475 ASSERT_TRUE(browser_proxy.get() != NULL); | |
476 ASSERT_TRUE(browser_proxy->GetTabCount(&tab_count)); | |
477 ASSERT_EQ(expected_tab_count, tab_count); | |
478 | |
479 for (int i = 0; i < expected_tab_count; ++i) { | |
480 scoped_refptr<TabProxy> tab_proxy(browser_proxy->GetTab(i)); | |
481 ASSERT_TRUE(tab_proxy.get() != NULL); | |
482 ASSERT_TRUE(tab_proxy->WaitForTabToBeRestored( | |
483 TestTimeouts::action_max_timeout_ms())); | |
484 } | |
485 | |
486 int process_count = 0; | |
487 ASSERT_TRUE(GetBrowserProcessCount(&process_count)); | |
488 ASSERT_EQ(expected_process_count, process_count); | |
489 } | |
490 | |
491 } // namespace | |
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