Allow fallback from https to http for component update checks.

chrome/browser/component_updater/chrome_component_updater_configurator_unittest.cc

 // Copyright 2015 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 <string>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/component_updater/chrome_component_updater_configurator.h"
 #include "components/component_updater/component_updater_switches.h"
+#include "components/component_updater/component_updater_url_constants.h"
+#include "components/component_updater/configurator_impl.h"
 #include "components/update_client/configurator.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
 namespace component_updater {
 
 TEST(ChromeComponentUpdaterConfiguratorTest, TestDisablePings) {
   base::CommandLine cmdline(*base::CommandLine::ForCurrentProcess());
   cmdline.AppendSwitchASCII(switches::kComponentUpdater, "disable-pings");
 
@@ skipping 38 matching lines @@
 
   EXPECT_FALSE(config->ExtraRequestParams().empty());
 }
 
 TEST(ChromeComponentUpdaterConfiguratorTest, TestUpdaterDefaultUrl) {
   base::CommandLine cmdline(*base::CommandLine::ForCurrentProcess());
   const auto config(MakeChromeComponentUpdaterConfigurator(&cmdline, nullptr));
   const auto urls = config->UpdateUrl();
 
   // Expect the default url to be cryptographically secure.
-  EXPECT_GE(urls.size(), 1ul);
+  EXPECT_GE(urls.size(), 1u);
   EXPECT_TRUE(urls.front().SchemeIsCryptographic());
 }
 
 TEST(ChromeComponentUpdaterConfiguratorTest, TestUseCupSigning) {
   base::CommandLine cmdline(*base::CommandLine::ForCurrentProcess());
   const auto config(MakeChromeComponentUpdaterConfigurator(&cmdline, nullptr));
 
   EXPECT_TRUE(config->UseCupSigning());
 }
 
+TEST(ChromeComponentUpdaterConfiguratorTest, TestUseEncryption) {
+  base::CommandLine* cmdline = base::CommandLine::ForCurrentProcess();
+  const auto config(MakeChromeComponentUpdaterConfigurator(cmdline, nullptr));
+
+  const auto urls = config->UpdateUrl();
+  ASSERT_EQ(2u, urls.size());
+  ASSERT_STREQ(kUpdaterDefaultUrl, urls[0].spec().c_str());
+  ASSERT_STREQ(kUpdaterFallbackUrl, urls[1].spec().c_str());
+
+  ASSERT_EQ(config->UpdateUrl(), config->PingUrl());
+
+  // Use the configurator implementation to test the filtering of
+  // unencrypted URLs.
+  {
+    const ConfiguratorImpl config(cmdline, nullptr, true);
+    const auto urls = config.UpdateUrl();
+    ASSERT_EQ(1u, urls.size());
+    ASSERT_STREQ(kUpdaterDefaultUrl, urls[0].spec().c_str());
+    ASSERT_EQ(config.UpdateUrl(), config.PingUrl());
+  }
+
+  {
+    const ConfiguratorImpl config(cmdline, nullptr, false);
+    const auto urls = config.UpdateUrl();
+    ASSERT_EQ(2u, urls.size());
+    ASSERT_STREQ(kUpdaterDefaultUrl, urls[0].spec().c_str());
+    ASSERT_STREQ(kUpdaterFallbackUrl, urls[1].spec().c_str());
+    ASSERT_EQ(config.UpdateUrl(), config.PingUrl());
+  }
+}
+
 }  // namespace component_updater