Browser test for launching guest mode from the User Manager.

chrome/browser/ui/webui/signin/user_manager_ui_browsertest.cc

Index: chrome/browser/ui/webui/signin/user_manager_ui_browsertest.cc
diff --git a/chrome/browser/ui/webui/signin/user_manager_ui_browsertest.cc b/chrome/browser/ui/webui/signin/user_manager_ui_browsertest.cc
index de7018c8f79374ccf32809e3cfc6fc5524881afe..2ae194a1462106d7636eedaa362b6195624dc089 100644
--- a/chrome/browser/ui/webui/signin/user_manager_ui_browsertest.cc
+++ b/chrome/browser/ui/webui/signin/user_manager_ui_browsertest.cc
@@ -10,6 +10,7 @@
 #include "chrome/browser/profiles/profile_window.h"
 #include "chrome/browser/profiles/profiles_state.h"
 #include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_iterator.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/url_constants.h"
@@ -22,6 +23,19 @@
 #include "content/public/test/browser_test_utils.h"
 #include "ui/base/l10n/l10n_util.h"
 
+namespace {
+
+  int CountBrowsersForProfileByPath(const base::FilePath& profile_path) {

[noms (inactive), 2015/01/29 16:17:06]

nit: wrong indentation (don't indent inside the namespace)

[Mike Lerman, 2015/02/20 16:10:24]

Done.

+    int count = 0;
+    for (chrome::BrowserIterator it; !it.done(); it.Next()) {
+      if (it->profile()->GetOriginalProfile()->GetPath() == profile_path)
+        count++;
+    }
+    return count;
+  }
+
+}  // namespace
+
 class UserManagerUIBrowserTest : public InProcessBrowserTest,
                                  public testing::WithParamInterface<bool> {
  public:
@@ -94,5 +108,25 @@ IN_PROC_BROWSER_TEST_F(UserManagerUIBrowserTest, PageRedirectsToAboutChrome) {
   EXPECT_EQ(GURL(chrome::kChromeUIUberURL), current_URL);
 }
 
+IN_PROC_BROWSER_TEST_F(UserManagerUIBrowserTest, LaunchGuest) {
+  std::string user_manager_url = chrome::kChromeUIUserManagerURL;
+
+  ui_test_utils::NavigateToURL(browser(), GURL(user_manager_url));
+  content::WebContents* web_contents =
+      browser()->tab_strip_model()->GetActiveWebContents();
+  EXPECT_EQ(0, CountBrowsersForProfileByPath(
+      ProfileManager::GetGuestProfilePath()));
+
+  std::string launch_js =
+      base::StringPrintf("chrome.send('launchGuest')");
+
+  bool result = content::ExecuteScript(web_contents, launch_js);
+  EXPECT_TRUE(result);
+  base::RunLoop().RunUntilIdle();
+
+  EXPECT_GE(1, CountBrowsersForProfileByPath(
+      ProfileManager::GetGuestProfilePath()));
+}
+
 // TODO(mlerman): Test that unlocking a locked profile causes the extensions
 // service to become unblocked.