Hack to make tests work if out is a symlink: see if the current dir is the source root.

Fix some tests that were manually getting sourcedir from DIR_EXE instead of using DIR_SOURCE_ROOT.

BUG=none
TEST=rm -r out, ln -s /somedir/out out, run tests

Review URL: http://codereview.chromium.org/192064

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@25898 0039d316-1c4b-4281-b951-d872f2087c98

base/base_paths_linux.cc

@@ -39,12 +39,23 @@ bool PathProviderLinux(int key, FilePath* result) {
     case base::DIR_SOURCE_ROOT:
       // On linux, unit tests execute two levels deep from the source root.
       // For example:  sconsbuild/{Debug|Release}/net_unittest
-      if (!PathService::Get(base::DIR_EXE, &path))
-        return false;
-      path = path.Append(FilePath::kParentDirectory)
-                 .Append(FilePath::kParentDirectory);
-      *result = path;
-      return true;
+      if (PathService::Get(base::DIR_EXE, &path)) {
+        path = path.DirName().DirName();
+        if (file_util::PathExists(path.Append("base/base_paths_linux.cc"))) {
+          *result = path;
+          return true;
+        }
+      }
+      // If that failed (maybe the build output is symlinked to a different
+      // drive) try assuming the current directory is the source root.
+      if (file_util::GetCurrentDirectory(&path) &&
+          file_util::PathExists(path.Append("base/base_paths_linux.cc"))) {
+        *result = path;
+        return true;
+      }
+      LOG(ERROR) << "Couldn't find your source root.  "
+                 << "Try running from your chromium/src directory.";
+      return false;
   }
   return false;
 }

chrome/test/memory_test/memory_test.cc

@@ -48,9 +48,7 @@ class MemoryTest : public UITest {
 
     if (profile_dir.empty()) {
       // Compute the user-data-dir which contains our test cache.
-      PathService::Get(base::DIR_EXE, &profile_dir);
-      profile_dir = profile_dir.DirName();
-      profile_dir = profile_dir.DirName();
+      PathService::Get(base::DIR_SOURCE_ROOT, &profile_dir);
       profile_dir = profile_dir.AppendASCII("data");
       profile_dir = profile_dir.AppendASCII("memory_test");
       profile_dir = profile_dir.AppendASCII("general_mix");

chrome/test/page_cycler/page_cycler_test.cc

@@ -180,9 +180,7 @@ class PageCyclerTest : public UITest {
 
     // Make sure the test data is checked out
     FilePath test_path;
-    PathService::Get(base::DIR_EXE, &test_path);
-    test_path = test_path.DirName();
-    test_path = test_path.DirName();
+    PathService::Get(base::DIR_SOURCE_ROOT, &test_path);
     test_path = test_path.Append(FILE_PATH_LITERAL("data"));
     test_path = test_path.Append(FILE_PATH_LITERAL("page_cycler"));
     test_path = test_path.AppendASCII(name);

chrome/test/tab_switching/tab_switching_test.cc

@@ -29,9 +29,7 @@ namespace {
 class TabSwitchingUITest : public UITest {
  public:
   TabSwitchingUITest() {
-    PathService::Get(base::DIR_EXE, &path_prefix_);
-    path_prefix_ = path_prefix_.DirName();
-    path_prefix_ = path_prefix_.DirName();
+    PathService::Get(base::DIR_SOURCE_ROOT, &path_prefix_);
     path_prefix_ = path_prefix_.AppendASCII("data");
     path_prefix_ = path_prefix_.AppendASCII("tab_switching");
 

webkit/tools/test_shell/test_shell_gtk.cc

@@ -612,8 +612,8 @@ std::string TestShell::RewriteLocalUrl(const std::string& url) {
   std::string new_url(url);
   if (url.compare(0, kPrefixLen, kPrefix, kPrefixLen) == 0) {
     FilePath replace_path;
-    PathService::Get(base::DIR_EXE, &replace_path);
-    replace_path = replace_path.DirName().DirName().Append(
+    PathService::Get(base::DIR_SOURCE_ROOT, &replace_path);
+    replace_path = replace_path.Append(
         "webkit/data/layout_tests/LayoutTests/");
     new_url = std::string("file://") + replace_path.value() +
         url.substr(kPrefixLen);