Differential updates for components.

chrome/browser/component_updater/test/test_installer.h

Index: chrome/browser/component_updater/test/test_installer.h
diff --git a/chrome/browser/component_updater/test/test_installer.h b/chrome/browser/component_updater/test/test_installer.h
new file mode 100644
index 0000000000000000000000000000000000000000..037ef5d2f8c265d6294dac4d2a8634ad54b2d4de
--- /dev/null
+++ b/chrome/browser/component_updater/test/test_installer.h
@@ -0,0 +1,73 @@
+// 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.
+
+#ifndef CHROME_BROWSER_COMPONENT_UPDATER_TEST_TEST_INSTALLER_H_
+#define CHROME_BROWSER_COMPONENT_UPDATER_TEST_TEST_INSTALLER_H_
+
+#include "base/compiler_specific.h"
+#include "base/files/file_path.h"
+#include "chrome/browser/component_updater/component_updater_service.h"
+
+namespace base {
+class DictionaryValue;
+}
+
+// A TestInstaller is an installer that does nothing for installation except
+// increment a counter.
+class TestInstaller : public ComponentInstaller {
+ public:
+  explicit TestInstaller();
+
+  virtual void OnUpdateError(int error) OVERRIDE;
+
+  virtual bool Install(const base::DictionaryValue& manifest,
+                       const base::FilePath& unpack_path) OVERRIDE;
+
+  virtual bool GetInstalledFile(const std::string& file,
+                                base::FilePath* installed_file) OVERRIDE;
+
+  int error() const;
+
+  int install_count() const;
+
+ protected:
+  int error_;
+  int install_count_;
+};
+
+// A ReadOnlyTestInstaller is an installer that knows about files in an existing
+// directory. It will not write to the directory.
+class ReadOnlyTestInstaller : public TestInstaller {
+ public:
+  explicit ReadOnlyTestInstaller(const base::FilePath& installed_path);
+
+  virtual ~ReadOnlyTestInstaller();
+
+  virtual bool GetInstalledFile(const std::string& file,
+                                base::FilePath* installed_file) OVERRIDE;
+
+ private:
+  base::FilePath install_directory_;
+};
+
+// A VersionedTestInstaller is an installer that installs files into versioned
+// directories (e.g. somedir/25.23.89.141/<files>).
+class VersionedTestInstaller : public TestInstaller {
+ public :
+  explicit VersionedTestInstaller();
+
+  virtual ~VersionedTestInstaller();
+
+  virtual bool Install(const base::DictionaryValue& manifest,
+                       const base::FilePath& unpack_path) OVERRIDE;
+
+  virtual bool GetInstalledFile(const std::string& file,
+                                base::FilePath* installed_file) OVERRIDE;
+
+ private:
+  base::FilePath install_directory_;
+  Version current_version_;
+};
+
+#endif  // CHROME_BROWSER_COMPONENT_UPDATER_TEST_TEST_INSTALLER_H_