Check for empty paths in path_util

chrome/browser/extensions/extension_path_util_unittest.cc

+// Copyright 2014 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 "chrome/browser/extensions/path_util.h"
+
+#include "base/file_util.h"
+#include "base/files/file_path.h"
+#include "chrome/test/base/testing_profile.h"

[Devlin, 2014/08/05 23:40:35]

??

[gpdavis, 2014/08/06 18:37:25]

Oops-- I migrated the includes from another file, and missed this one when I
deleted the ones I didn't need.  Done.

+#include "testing/gtest/include/gtest/gtest.h"
+
+using base::FilePath;
+
+namespace extensions {
+
+// Basic unittests for path_util::PrettifyPath.
+// For legacy reasons, it's tested more in:

[Devlin, 2014/08/05 23:40:35]

nit: remove the colon and the indentation.

[gpdavis, 2014/08/06 18:37:25]

Done.

+//   FileSystemApiTest.FileSystemApiGetDisplayPathPrettify
+class ExtensionPathUtilTest : public testing::Test {

[Devlin, 2014/08/05 23:40:35]

This doesn't do anything.  Just do TEST(ExtensionPathUtilTest, EmptyPath)

[gpdavis, 2014/08/06 18:37:26]

Done.

+};
+
+namespace {

[Devlin, 2014/08/05 23:40:35]

We don't need to put these tests in their own namespace.

[gpdavis, 2014/08/06 18:37:26]

Done.

+
+TEST_F(ExtensionPathUtilTest, EmptyPath) {
+  FilePath empty_path;
+  FilePath prettified = path_util::PrettifyPath(empty_path);
+
+  ASSERT_TRUE(prettified.empty());
+}
+
+TEST_F(ExtensionPathUtilTest, HomeDirectory) {

[Devlin, 2014/08/05 23:40:35]

Rename this to be "BasicPrettifyPathTest" or something like that.

[gpdavis, 2014/08/06 18:37:26]

Done.

+  FilePath home = base::GetHomeDir();
+  FilePath prettified = path_util::PrettifyPath(home.AppendASCII("foo"));
+  ASSERT_EQ(FilePath(FILE_PATH_LITERAL("~")).AppendASCII("foo"), prettified);

[Devlin, 2014/08/05 23:40:35]

This is a little condensed for readability in a test (when I suggested the test,
I was being lazy and minimizing what I had to type).  We should make it more
clear what we're testing.

Also, we should test that the path before prettifying doesn't equal the expected
result (otherwise, our second expectation means nothing).

Also, we should test an extra layer, e.g. ~/foo/bar (no need to go deeper than
two), and no addition (i.e., home_path = ~).

[gpdavis, 2014/08/06 18:37:25]

Done.

+}
+
+}  // namespace
+
+}  // namespace extensions