Adding unit tests for PrerenderDispatcher.

chrome/renderer/prerender/prerender_dispatcher_unittest.cc

Index: chrome/renderer/prerender/prerender_dispatcher_unittest.cc
diff --git a/chrome/renderer/prerender/prerender_dispatcher_unittest.cc b/chrome/renderer/prerender/prerender_dispatcher_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0caf1881bb84616d74e875c869637ed25b3ade3e
--- /dev/null
+++ b/chrome/renderer/prerender/prerender_dispatcher_unittest.cc
@@ -0,0 +1,114 @@
+// Copyright (c) 2012 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/logging.h"
+#include "base/memory/scoped_ptr.h"
+#include "chrome/renderer/prerender/prerender_dispatcher.h"

[sky, 2012/05/23 20:54:57]

this should be your first include, newline, then rest of includes.

[dominich, 2012/05/24 15:18:46]

Done.

+#include "googleurl/src/gurl.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace prerender {
+
+class PrerenderDispatcherTest : public testing::Test {
+ public:
+  PrerenderDispatcherTest()
+      : prerender_dispatcher_(new PrerenderDispatcher()) {

[sky, 2012/05/23 20:54:57]

why both with a scoped_ptr here?

[dominich, 2012/05/24 15:18:46]

Bad habits are creeping in to my code. Removed heap alloc.

+  }
+
+  PrerenderDispatcher* prerender_dispatcher() {
+    return prerender_dispatcher_.get();
+  }
+
+ private:
+  scoped_ptr<PrerenderDispatcher> prerender_dispatcher_;
+};

[sky, 2012/05/23 20:54:57]

DISALLOW_...

[dominich, 2012/05/24 15:18:46]

Done.

[dominich, 2012/05/24 15:18:46]

Done.

+
+TEST_F(PrerenderDispatcherTest, PrerenderDispatcherEmpty) {
+  EXPECT_EQ(0U, prerender_dispatcher()->prerender_urls_.size());
+}
+
+TEST_F(PrerenderDispatcherTest, PrerenderDispatcherSingleAdd) {
+  GURL foo_url = GURL("http://foo.com");
+  EXPECT_FALSE(prerender_dispatcher()->IsPrerenderURL(foo_url));
+  prerender_dispatcher()->OnAddPrerenderURL(foo_url);
+  EXPECT_TRUE(prerender_dispatcher()->IsPrerenderURL(foo_url));
+
+  PrerenderDispatcher::PrerenderMap::const_iterator entry =
+      prerender_dispatcher()->prerender_urls_.find(foo_url);
+  EXPECT_FALSE(prerender_dispatcher()->prerender_urls_.end() == entry);
+  EXPECT_EQ(1, entry->second);
+}
+
+TEST_F(PrerenderDispatcherTest, PrerenderDispatcherMultipleAdd) {
+  GURL foo_url = GURL("http://foo.com");
+  GURL bar_url = GURL("http://bar.com");
+
+  EXPECT_FALSE(prerender_dispatcher()->IsPrerenderURL(foo_url));
+  EXPECT_FALSE(prerender_dispatcher()->IsPrerenderURL(bar_url));
+  prerender_dispatcher()->OnAddPrerenderURL(foo_url);
+  EXPECT_TRUE(prerender_dispatcher()->IsPrerenderURL(foo_url));
+  EXPECT_FALSE(prerender_dispatcher()->IsPrerenderURL(bar_url));
+
+  {
+    prerender_dispatcher()->OnAddPrerenderURL(foo_url);
+    EXPECT_TRUE(prerender_dispatcher()->IsPrerenderURL(foo_url));
+    EXPECT_FALSE(prerender_dispatcher()->IsPrerenderURL(bar_url));
+    PrerenderDispatcher::PrerenderMap::const_iterator foo_entry =
+        prerender_dispatcher()->prerender_urls_.find(foo_url);
+    EXPECT_FALSE(prerender_dispatcher()->prerender_urls_.end() == foo_entry);
+    EXPECT_EQ(2, foo_entry->second);
+  }
+
+  {
+    prerender_dispatcher()->OnAddPrerenderURL(bar_url);
+    EXPECT_TRUE(prerender_dispatcher()->IsPrerenderURL(foo_url));
+    EXPECT_TRUE(prerender_dispatcher()->IsPrerenderURL(bar_url));
+    PrerenderDispatcher::PrerenderMap::const_iterator foo_entry =
+        prerender_dispatcher()->prerender_urls_.find(foo_url);
+    EXPECT_FALSE(prerender_dispatcher()->prerender_urls_.end() == foo_entry);
+    EXPECT_EQ(2, foo_entry->second);
+    PrerenderDispatcher::PrerenderMap::const_iterator bar_entry =
+        prerender_dispatcher()->prerender_urls_.find(bar_url);
+    EXPECT_FALSE(prerender_dispatcher()->prerender_urls_.end() == bar_entry);
+    EXPECT_EQ(1, bar_entry->second);
+  }
+}
+
+TEST_F(PrerenderDispatcherTest, PrerenderDispatcherSingleRemove) {
+  GURL foo_url = GURL("http://foo.com");
+  EXPECT_FALSE(prerender_dispatcher()->IsPrerenderURL(foo_url));
+  prerender_dispatcher()->OnAddPrerenderURL(foo_url);
+  EXPECT_TRUE(prerender_dispatcher()->IsPrerenderURL(foo_url));
+  prerender_dispatcher()->OnRemovePrerenderURL(foo_url);
+  EXPECT_FALSE(prerender_dispatcher()->IsPrerenderURL(foo_url));
+  PrerenderDispatcher::PrerenderMap::const_iterator foo_entry =
+      prerender_dispatcher()->prerender_urls_.find(foo_url);
+  EXPECT_EQ(prerender_dispatcher()->prerender_urls_.end(), foo_entry);
+}
+
+TEST_F(PrerenderDispatcherTest, PrerenderDispatcherMultipleRemove) {
+  GURL foo_url = GURL("http://foo.com");
+  EXPECT_FALSE(prerender_dispatcher()->IsPrerenderURL(foo_url));
+  prerender_dispatcher()->OnAddPrerenderURL(foo_url);
+  EXPECT_TRUE(prerender_dispatcher()->IsPrerenderURL(foo_url));
+  prerender_dispatcher()->OnAddPrerenderURL(foo_url);
+  EXPECT_TRUE(prerender_dispatcher()->IsPrerenderURL(foo_url));
+  PrerenderDispatcher::PrerenderMap::const_iterator foo_entry =
+      prerender_dispatcher()->prerender_urls_.find(foo_url);
+  EXPECT_FALSE(prerender_dispatcher()->prerender_urls_.end() == foo_entry);
+  EXPECT_EQ(2, foo_entry->second);
+
+  prerender_dispatcher()->OnRemovePrerenderURL(foo_url);
+  EXPECT_TRUE(prerender_dispatcher()->IsPrerenderURL(foo_url));
+  foo_entry = prerender_dispatcher()->prerender_urls_.find(foo_url);
+  EXPECT_FALSE(prerender_dispatcher()->prerender_urls_.end() == foo_entry);
+  EXPECT_EQ(1, foo_entry->second);
+
+  prerender_dispatcher()->OnRemovePrerenderURL(foo_url);
+  EXPECT_FALSE(prerender_dispatcher()->IsPrerenderURL(foo_url));
+  foo_entry = prerender_dispatcher()->prerender_urls_.find(foo_url);
+  EXPECT_EQ(prerender_dispatcher()->prerender_urls_.end(), foo_entry);
+}
+
+}  // end namespace prerender