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chrome/browser/tab_contents/navigation_controller_unittest.cc

 // Copyright (c) 2010 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 "base/file_util.h"
 #include "base/path_service.h"
 #include "base/scoped_ptr.h"
 #include "base/stl_util-inl.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
@@ skipping 1847 matching lines @@
   EXPECT_EQ(url3, nav_params.a.url);
   process()->sink().ClearMessages();
 
   // Make sure an extravagant history.go() doesn't break.
   rvh_delegate->GoToEntryAtOffset(120);  // Out of bounds.
   EXPECT_EQ(-1, controller().pending_entry_index());
   message = process()->sink().GetFirstMessageMatching(ViewMsg_Navigate::ID);
   EXPECT_TRUE(message == NULL);
 }
 
+// Test call to PruneAllButActive for the only entry.
+TEST_F(NavigationControllerTest, PruneAllButActiveForSingle) {
+  const GURL url1("http://foo1");
+  NavigateAndCommit(url1);
+  controller().PruneAllButActive();
+
+  EXPECT_EQ(-1, controller().pending_entry_index());
+  EXPECT_EQ(controller().GetEntryAtIndex(0)->url(), url1);
+}
+
+// Test call to PruneAllButActive for last entry.
+TEST_F(NavigationControllerTest, PruneAllButActiveForLast) {
+  const GURL url1("http://foo1");
+  const GURL url2("http://foo2");
+  const GURL url3("http://foo3");
+
+  NavigateAndCommit(url1);
+  NavigateAndCommit(url2);
+  NavigateAndCommit(url3);
+  controller().GoBack();
+  controller().GoBack();
+  contents()->CommitPendingNavigation();
+
+  controller().PruneAllButActive();
+
+  EXPECT_EQ(-1, controller().pending_entry_index());
+  EXPECT_EQ(controller().GetEntryAtIndex(0)->url(), url1);
+}
+
+// Test call to PruneAllButActive for intermediate entry.
+TEST_F(NavigationControllerTest, PruneAllButActiveForIntermediate) {
+  const GURL url1("http://foo1");
+  const GURL url2("http://foo2");
+  const GURL url3("http://foo3");
+
+  NavigateAndCommit(url1);
+  NavigateAndCommit(url2);
+  NavigateAndCommit(url3);
+  controller().GoBack();
+  contents()->CommitPendingNavigation();
+
+  controller().PruneAllButActive();
+
+  EXPECT_EQ(-1, controller().pending_entry_index());
+  EXPECT_EQ(controller().GetEntryAtIndex(0)->url(), url2);
+}
+
+// Test call to PruneAllButActive for intermediate entry.
+TEST_F(NavigationControllerTest, PruneAllButActiveForPending) {
+  const GURL url1("http://foo1");
+  const GURL url2("http://foo2");
+  const GURL url3("http://foo3");
+
+  NavigateAndCommit(url1);
+  NavigateAndCommit(url2);
+  NavigateAndCommit(url3);
+  controller().GoBack();
+
+  controller().PruneAllButActive();
+
+  EXPECT_EQ(0, controller().pending_entry_index());
+}
+
 /* TODO(brettw) These test pass on my local machine but fail on the XP buildbot
    (but not Vista) cleaning up the directory after they run.
    This should be fixed.
 
 // A basic test case. Navigates to a single url, and make sure the history
 // db matches.
 TEST_F(NavigationControllerHistoryTest, Basic) {
   controller().LoadURL(url0, GURL(), PageTransition::LINK);
   rvh()->SendNavigate(0, url0);
 
@@ skipping 62 matching lines @@
                     PageTransition::LINK);
   session_helper_.AssertNavigationEquals(nav,
                                          windows_[0]->tabs[0]->navigations[0]);
   nav.set_url(url2);
   session_helper_.AssertNavigationEquals(nav,
                                          windows_[0]->tabs[0]->navigations[1]);
 }
 */
 
 }  // namespace