net: move host_resolver files from net/base to net/dns

net/base/single_request_host_resolver_unittest.cc

-// 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 "net/base/single_request_host_resolver.h"
-
-#include "net/base/address_list.h"
-#include "net/base/mock_host_resolver.h"
-#include "net/base/net_errors.h"
-#include "net/base/net_log.h"
-#include "net/base/test_completion_callback.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace net {
-
-namespace {
-
-// Helper class used by SingleRequestHostResolverTest.Cancel test.
-// It checks that only one request is outstanding at a time, and that
-// it is cancelled before the class is destroyed.
-class HangingHostResolver : public HostResolver {
- public:
-  HangingHostResolver() : outstanding_request_(NULL) {}
-
-  virtual ~HangingHostResolver() {
-    EXPECT_TRUE(!has_outstanding_request());
-  }
-
-  bool has_outstanding_request() const {
-    return outstanding_request_ != NULL;
-  }
-
-  virtual int Resolve(const RequestInfo& info,
-                      AddressList* addresses,
-                      const CompletionCallback& callback,
-                      RequestHandle* out_req,
-                      const BoundNetLog& net_log) OVERRIDE {
-    EXPECT_FALSE(has_outstanding_request());
-    outstanding_request_ = reinterpret_cast<RequestHandle>(0x1234);
-    *out_req = outstanding_request_;
-
-    // Never complete this request! Caller is expected to cancel it
-    // before destroying the resolver.
-    return ERR_IO_PENDING;
-  }
-
-  virtual int ResolveFromCache(const RequestInfo& info,
-                               AddressList* addresses,
-                               const BoundNetLog& net_log) OVERRIDE {
-    NOTIMPLEMENTED();
-    return ERR_UNEXPECTED;
-  }
-
-  virtual void CancelRequest(RequestHandle req) OVERRIDE {
-    EXPECT_TRUE(has_outstanding_request());
-    EXPECT_EQ(req, outstanding_request_);
-    outstanding_request_ = NULL;
-  }
-
- private:
-  RequestHandle outstanding_request_;
-
-  DISALLOW_COPY_AND_ASSIGN(HangingHostResolver);
-};
-
-// Test that a regular end-to-end lookup returns the expected result.
-TEST(SingleRequestHostResolverTest, NormalResolve) {
-  // Create a host resolver dependency that returns address "199.188.1.166"
-  // for resolutions of "watsup".
-  MockHostResolver resolver;
-  resolver.rules()->AddIPLiteralRule("watsup", "199.188.1.166", "");
-
-  SingleRequestHostResolver single_request_resolver(&resolver);
-
-  // Resolve "watsup:90" using our SingleRequestHostResolver.
-  AddressList addrlist;
-  TestCompletionCallback callback;
-  HostResolver::RequestInfo request(HostPortPair("watsup", 90));
-  int rv = single_request_resolver.Resolve(
-      request, &addrlist, callback.callback(), BoundNetLog());
-  EXPECT_EQ(ERR_IO_PENDING, rv);
-  EXPECT_EQ(OK, callback.WaitForResult());
-
-  // Verify that the result is what we specified in the MockHostResolver.
-  ASSERT_FALSE(addrlist.empty());
-  EXPECT_EQ("199.188.1.166", addrlist.front().ToStringWithoutPort());
-}
-
-// Test that the Cancel() method cancels any outstanding request.
-TEST(SingleRequestHostResolverTest, Cancel) {
-  HangingHostResolver resolver;
-
-  {
-    SingleRequestHostResolver single_request_resolver(&resolver);
-
-    // Resolve "watsup:90" using our SingleRequestHostResolver.
-    AddressList addrlist;
-    TestCompletionCallback callback;
-    HostResolver::RequestInfo request(HostPortPair("watsup", 90));
-    int rv = single_request_resolver.Resolve(
-        request, &addrlist, callback.callback(), BoundNetLog());
-    EXPECT_EQ(ERR_IO_PENDING, rv);
-    EXPECT_TRUE(resolver.has_outstanding_request());
-  }
-
-  // Now that the SingleRequestHostResolver has been destroyed, the
-  // in-progress request should have been aborted.
-  EXPECT_FALSE(resolver.has_outstanding_request());
-}
-
-// Test that the Cancel() method is a no-op when there is no outstanding
-// request.
-TEST(SingleRequestHostResolverTest, CancelWhileNoPendingRequest) {
-  HangingHostResolver resolver;
-  SingleRequestHostResolver single_request_resolver(&resolver);
-  single_request_resolver.Cancel();
-
-  // To pass, HangingHostResolver should not have received a cancellation
-  // request (since there is nothing to cancel). If it does, it will crash.
-}
-
-} // namespace
-
-}  // namespace net