[BlobStorage] Implementing disk.

content/browser/blob_storage/blob_storage_browsertest.cc

+// Copyright 2016 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 "content/browser/blob_storage/chrome_blob_storage_context.h"
+#include "content/public/browser/browser_context.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/test/browser_test_utils.h"
+#include "content/public/test/content_browser_test.h"
+#include "content/public/test/content_browser_test_utils.h"
+#include "content/shell/browser/shell.h"
+#include "storage/browser/blob/blob_memory_controller.h"
+#include "storage/browser/blob/blob_storage_context.h"
+#include "storage/common/blob_storage/blob_storage_constants.h"
+
+namespace content {
+namespace {
+const size_t kTestBlobStorageIPCThresholdBytes = 5;
+const size_t kTestBlobStorageMaxSharedMemoryBytes = 10;
+
+const size_t kTestBlobStorageMaxBlobMemorySize = 200;
+const uint64_t kTestBlobStorageMaxDiskSpace = 3000;
+const uint64_t kTestBlobStorageMinFileSizeBytes = 20;
+const uint64_t kTestBlobStorageMaxFileSizeBytes = 50;
+}  // namespace
+
+// This browser test is aimed towards exercising the IndexedDB bindings and
+// the actual implementation that lives in the browser side.
+class BlobStorageBrowserTest : public ContentBrowserTest {
+ public:
+  BlobStorageBrowserTest() {
+    limits_.max_ipc_memory_size = kTestBlobStorageIPCThresholdBytes;
+    limits_.max_shared_memory_size = kTestBlobStorageMaxSharedMemoryBytes;
+    limits_.max_blob_in_memory_space = kTestBlobStorageMaxBlobMemorySize;
+    limits_.max_blob_disk_space = kTestBlobStorageMaxDiskSpace;
+    limits_.min_page_file_size = kTestBlobStorageMinFileSizeBytes;
+    limits_.max_file_size = kTestBlobStorageMaxFileSizeBytes;
+  }
+
+  void SetBlobLimits() {
+    GetMemoryController()->set_limits_for_testing(limits_);
+  }
+
+  storage::BlobMemoryController* GetMemoryController() {
+    content::ChromeBlobStorageContext* blob_context =
+        ChromeBlobStorageContext::GetFor(
+            shell()->web_contents()->GetBrowserContext());
+    return blob_context->context()->mutable_memory_controller();
+  }
+
+  void SimpleTest(const GURL& test_url, bool incognito = false) {
+    // The test page will perform tests on IndexedDB, then navigate to either
+    // a #pass or #fail ref.
+    Shell* the_browser = incognito ? CreateOffTheRecordBrowser() : shell();
+
+    VLOG(0) << "Navigating to URL and blocking. " << test_url.spec();
+    NavigateToURLBlockUntilNavigationsComplete(the_browser, test_url, 2);
+    VLOG(0) << "Navigation done.";
+    std::string result =
+        the_browser->web_contents()->GetLastCommittedURL().ref();
+    if (result != "pass") {
+      std::string js_result;
+      ASSERT_TRUE(ExecuteScriptAndExtractString(
+          the_browser, "window.domAutomationController.send(getLog())",
+          &js_result));
+      FAIL() << "Failed: " << js_result;
+    }
+  }
+
+ protected:
+  storage::BlobStorageLimits limits_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(BlobStorageBrowserTest);
+};
+
+IN_PROC_BROWSER_TEST_F(BlobStorageBrowserTest, BlobFuzzing) {
+  SetBlobLimits();
+  SimpleTest(GetTestUrl("blob_storage", "blob_creation_and_slicing.html"));
+  storage::BlobMemoryController* memory_controller = GetMemoryController();
+  // Our exact usages depend on IPC message ordering & garbage collection.
+  // Since this is basically random, we just check bounds.
+  EXPECT_LT(0u, memory_controller->memory_usage());
+  EXPECT_LT(0ul, memory_controller->disk_usage());
+  EXPECT_GT(memory_controller->disk_usage(),
+            static_cast<uint64_t>(memory_controller->memory_usage()));
+  EXPECT_GT(limits_.max_blob_in_memory_space,
+            memory_controller->memory_usage());
+  EXPECT_GT(limits_.max_blob_disk_space, memory_controller->disk_usage());
+  shell()->Close();
+  EXPECT_EQ(0u, memory_controller->memory_usage());
+  EXPECT_EQ(0ul, memory_controller->disk_usage());
+}
+
+}  // namespace content