Fix a crash in MimeHandlerServiceImpl::AbortStream().

extensions/browser/api/mime_handler_private/mime_handler_private_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/memory/scoped_ptr.h"
+#include "content/public/browser/stream_handle.h"
+#include "content/public/browser/stream_info.h"
+#include "extensions/browser/api/mime_handler_private/mime_handler_private.cc"
+#include "extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace extensions {
+
+class TestStreamHandle : public content::StreamHandle {
+ public:
+  TestStreamHandle() : url_("stream://url") {}
+
+  ~TestStreamHandle() override {
+    while (!close_callbacks_.empty()) {
+      close_callbacks_.front().Run();
+      close_callbacks_.pop();
+    }
+  }
+
+  const GURL& GetURL() override { return url_; }
+
+  void AddCloseListener(const base::Closure& callback) override {
+    close_callbacks_.push(callback);
+  }
+
+ private:
+  GURL url_;
+  std::queue<base::Closure> close_callbacks_;
+};
+
+class MimeHandlerServiceImplTest : public testing::Test {
+ public:
+  void SetUp() override {
+    scoped_ptr<content::StreamInfo> stream_info(new content::StreamInfo);
+    stream_info->handle = make_scoped_ptr(new TestStreamHandle);
+    stream_info->mime_type = "test/unit";
+    stream_info->original_url = GURL("test://extensions_unittests");
+    stream_container_.reset(
+        new StreamContainer(stream_info.Pass(), 1, true, GURL(), ""));
+    service_.reset(new MimeHandlerServiceImpl(stream_container_->GetWeakPtr()));
+  }
+  void TearDown() override {
+    service_.reset();
+    stream_container_.reset();
+  }
+
+  void AbortCallback() { abort_called_ = true; }
+  void GetStreamInfoCallback(mime_handler::StreamInfoPtr stream_info) {
+    stream_info_ = stream_info.Pass();
+  }
+
+  scoped_ptr<StreamContainer> stream_container_;
+  scoped_ptr<mime_handler::MimeHandlerService> service_;
+  bool abort_called_ = false;
+  mime_handler::StreamInfoPtr stream_info_;
+};
+
+TEST_F(MimeHandlerServiceImplTest, Abort) {
+  service_->AbortStream(base::Bind(&MimeHandlerServiceImplTest::AbortCallback,
+                                   base::Unretained(this)));
+  EXPECT_TRUE(abort_called_);
+
+  abort_called_ = false;
+  service_->AbortStream(base::Bind(&MimeHandlerServiceImplTest::AbortCallback,
+                                   base::Unretained(this)));
+  EXPECT_TRUE(abort_called_);
+
+  stream_container_.reset();
+  abort_called_ = false;
+  service_->AbortStream(base::Bind(&MimeHandlerServiceImplTest::AbortCallback,
+                                   base::Unretained(this)));
+  EXPECT_TRUE(abort_called_);
+}
+
+TEST_F(MimeHandlerServiceImplTest, GetStreamInfo) {
+  service_->GetStreamInfo(
+      base::Bind(&MimeHandlerServiceImplTest::GetStreamInfoCallback,
+                 base::Unretained(this)));
+  ASSERT_TRUE(stream_info_);
+  EXPECT_TRUE(stream_info_->embedded);
+  EXPECT_EQ(1, stream_info_->tab_id);
+  EXPECT_EQ("test/unit", stream_info_->mime_type);
+  EXPECT_EQ("test://extensions_unittests", stream_info_->original_url);
+  EXPECT_EQ("stream://url", stream_info_->stream_url);
+
+  service_->AbortStream(base::Bind(&MimeHandlerServiceImplTest::AbortCallback,
+                                   base::Unretained(this)));
+  EXPECT_TRUE(abort_called_);
+  service_->GetStreamInfo(
+      base::Bind(&MimeHandlerServiceImplTest::GetStreamInfoCallback,
+                 base::Unretained(this)));
+  ASSERT_FALSE(stream_info_);
+
+  stream_container_.reset();
+  service_->GetStreamInfo(
+      base::Bind(&MimeHandlerServiceImplTest::GetStreamInfoCallback,
+                 base::Unretained(this)));
+  ASSERT_FALSE(stream_info_);
+}
+
+}  // namespace extensions