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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "webkit/common/blob/shareable_file_reference.h"
      6 
      7 #include "base/file_util.h"
      8 #include "base/files/scoped_temp_dir.h"
      9 #include "base/message_loop/message_loop.h"
     10 #include "base/message_loop/message_loop_proxy.h"
     11 #include "testing/gtest/include/gtest/gtest.h"
     12 
     13 namespace webkit_blob {
     14 
     15 TEST(ShareableFileReferenceTest, TestReferences) {
     16   base::MessageLoop message_loop;
     17   scoped_refptr<base::MessageLoopProxy> loop_proxy =
     18       base::MessageLoopProxy::current();
     19   base::ScopedTempDir temp_dir;
     20   ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
     21 
     22   // Create a file.
     23   base::FilePath file;
     24   file_util::CreateTemporaryFileInDir(temp_dir.path(), &file);
     25   EXPECT_TRUE(base::PathExists(file));
     26 
     27   // Create a first reference to that file.
     28   scoped_refptr<ShareableFileReference> reference1;
     29   reference1 = ShareableFileReference::Get(file);
     30   EXPECT_FALSE(reference1.get());
     31   reference1 = ShareableFileReference::GetOrCreate(
     32       file, ShareableFileReference::DELETE_ON_FINAL_RELEASE, loop_proxy.get());
     33   EXPECT_TRUE(reference1.get());
     34   EXPECT_TRUE(file == reference1->path());
     35 
     36   // Get a second reference to that file.
     37   scoped_refptr<ShareableFileReference> reference2;
     38   reference2 = ShareableFileReference::Get(file);
     39   EXPECT_EQ(reference1.get(), reference2.get());
     40   reference2 = ShareableFileReference::GetOrCreate(
     41       file, ShareableFileReference::DELETE_ON_FINAL_RELEASE, loop_proxy.get());
     42   EXPECT_EQ(reference1.get(), reference2.get());
     43 
     44   // Drop the first reference, the file and reference should still be there.
     45   reference1 = NULL;
     46   EXPECT_TRUE(ShareableFileReference::Get(file).get());
     47   base::MessageLoop::current()->RunUntilIdle();
     48   EXPECT_TRUE(base::PathExists(file));
     49 
     50   // Drop the second reference, the file and reference should get deleted.
     51   reference2 = NULL;
     52   EXPECT_FALSE(ShareableFileReference::Get(file).get());
     53   base::MessageLoop::current()->RunUntilIdle();
     54   EXPECT_FALSE(base::PathExists(file));
     55 
     56   // TODO(michaeln): add a test for files that aren't deletable behavior.
     57 }
     58 
     59 }  // namespace webkit_blob
     60