Add tests for Component Updater command line arguments

chrome/browser/component_updater/test/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 "base/command_line.h"
+#include "chrome/browser/component_updater/chrome_component_updater_configurator.h"
+#include "components/component_updater/component_updater_switches.h"
+#include "components/update_client/configurator.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "url/gurl.h"
+
+namespace component_updater {
+
+

[Sorin Jianu, 2015/03/23 23:32:01]

Extra empty line not needed/

+TEST(ChromeComponentUpdaterConfiguratorTest, TestDisablePings) {
+  base::CommandLine * cmdline = base::CommandLine::ForCurrentProcess();

[Sorin Jianu, 2015/03/23 23:32:01]

* goes next to the type.

Are you using the "git cl format" command? For the component update code we like
to run that command, so that we have code that is formatted in a
style-compliant, and uniform way. You could only run it for new code that you
have written.

+  cmdline->AppendSwitchASCII(switches::kComponentUpdater, kSwitchDisablePings);

[Sorin Jianu, 2015/03/23 23:32:01]

There are two ways to write these data driven unit tests: like this or by
hardcoding the expected values. If we do the latter, then there is not need to
export the command line arguments. In this case, the test not only tests the
behavior of TestDisablePings, but also that the command argument has not changed
in a way that breaks backward compatibility.

+
+  update_client::Configurator* config =

[Sorin Jianu, 2015/03/23 23:32:01]

Some of these variables can be declared const.

+      MakeChromeComponentUpdaterConfigurator(cmdline, NULL);
+
+  std::vector<GURL> pingUrls = config->PingUrl();
+  EXPECT_TRUE(pingUrls.empty());
+}
+
+TEST(ChromeComponentUpdaterConfiguratorTest, TestFastUpdate) {
+  base::CommandLine * cmdline = base::CommandLine::ForCurrentProcess();
+  // Set command line flag

[Sorin Jianu, 2015/03/23 23:32:01]

Comment not needed.

+  cmdline->AppendSwitchASCII(switches::kComponentUpdater, kSwitchFastUpdate);
+
+  update_client::Configurator* config =
+      MakeChromeComponentUpdaterConfigurator(cmdline, NULL);
+
+  EXPECT_EQ(config->InitialDelay(), 1);
+
+}
+
+TEST(ChromeComponentUpdaterConfiguratorTest, TestOverrideUrl) {
+  char overrideUrl[] = "http://0.0.0.0/";
+
+  base::CommandLine * cmdline = base::CommandLine::ForCurrentProcess();
+  std::string val = kSwitchUrlSource;
+  val.append("=");
+  val.append(overrideUrl);
+  cmdline->AppendSwitchASCII(switches::kComponentUpdater, val.c_str());
+
+  update_client::Configurator* config =
+      MakeChromeComponentUpdaterConfigurator(cmdline, NULL);
+
+  std::vector<GURL> urls = config->UpdateUrl();
+
+  // should only be one element

[Sorin Jianu, 2015/03/23 23:32:01]

Comment not needed.

+  EXPECT_EQ(urls.size(), 1U);

[Sorin Jianu, 2015/03/23 23:32:01]

The syntaxt for the EXPECT assertion is ASSERT_EQ(expected, actual);

When the expectation fails, it prints a human friendly message. The message will
be confusing if the parameters are swapped.

+  EXPECT_EQ(urls.at(0).possibly_invalid_spec(), overrideUrl);
+}
+
+TEST(ChromeComponentUpdaterConfiguratorTest, TestSwitchRequestParam) {
+  base::CommandLine * cmdline = base::CommandLine::ForCurrentProcess();
+  cmdline->AppendSwitchASCII(switches::kComponentUpdater, kSwitchRequestParam);
+
+  update_client::Configurator* config =
+      MakeChromeComponentUpdaterConfigurator(cmdline, NULL);
+
+  EXPECT_FALSE(config->ExtraRequestParams().empty());
+}
+
+} // namespace component_updater

[Sorin Jianu, 2015/03/23 23:32:01]

Needs a space before //.