Adds support for the DHCP portion of the WPAD (proxy auto-discovery) protocol.

net/proxy/dhcp_proxy_script_fetcher_factory_unittest.cc

+// Copyright (c) 2011 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 "net/proxy/dhcp_proxy_script_fetcher.h"
+#include "net/proxy/dhcp_proxy_script_fetcher_factory.h"
+#include "net/url_request/url_request_test_util.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace net {
+namespace {
+
+// Makes constructors available to these tests.
+class TestingDhcpProxyScriptFetcherFactory
+    : public DhcpProxyScriptFetcherFactory {
+};
+
+TEST(DhcpProxyScriptFetcherFactory, DoNothingWhenDisabled) {
+  TestingDhcpProxyScriptFetcherFactory fac;
+  fac.SetEnabled(false);
+  // Non-do-nothing fetchers would DCHECK on the NULL pointer.
+  DhcpProxyScriptFetcher* fetcher = fac.Create(NULL);
+  ASSERT_TRUE(fetcher);
+  EXPECT_EQ("", fetcher->GetFetcherName());
+}
+
+#if defined(OS_WIN)
+TEST(DhcpProxyScriptFetcherFactory, WindowsFetcherOnWindows) {
+  TestingDhcpProxyScriptFetcherFactory fac;
+  fac.SetEnabled(true);
+
+  scoped_refptr<TestURLRequestContext> context(new TestURLRequestContext());
+  DhcpProxyScriptFetcher* fetcher = fac.Create(context);
+  ASSERT_TRUE(fetcher);
+  EXPECT_EQ("win", fetcher->GetFetcherName());
+}
+#endif  // defined(OS_WIN)
+
+TEST(DhcpProxyScriptFetcherFactory, IsSupported) {
+#if defined(OS_WIN)
+  ASSERT_TRUE(DhcpProxyScriptFetcherFactory::IsSupported());
+#else
+  ASSERT_FALSE(DhcpProxyScriptFetcherFactory::IsSupported());
+#endif  // defined(OS_WIN)
+}
+
+TEST(DhcpProxyScriptFetcherFactory, SetEnabled) {
+  TestingDhcpProxyScriptFetcherFactory fac;
+  EXPECT_FALSE(fac.IsEnabled());
+
+  fac.SetEnabled(false);
+  EXPECT_FALSE(fac.IsEnabled());
+
+  fac.SetEnabled(true);
+#if defined(OS_WIN)
+  EXPECT_TRUE(fac.IsEnabled());
+#else
+  EXPECT_FALSE(fac.IsEnabled());
+#endif  // defined(OS_WIN)
+}
+
+}  // namespace
+}  // namespace net