From e49fede158e9a8c9e8aeef06093a8d591331e9f7 Mon Sep 17 00:00:00 2001
From: alessiob <alessiob@webrtc.org>
Date: Wed, 15 Mar 2017 06:04:59 -0700
Subject: [PATCH] FileUtilsTest DirExists function added

BUG=webrtc:7218

Review-Url: https://codereview.webrtc.org/2749163003
Cr-Commit-Position: refs/heads/master@{#17247}
---
 webrtc/test/testsupport/fileutils.cc          |  6 ++++++
 webrtc/test/testsupport/fileutils.h           |  3 +++
 webrtc/test/testsupport/fileutils_unittest.cc | 20 +++++++++++++++++++
 3 files changed, 29 insertions(+)

diff --git a/webrtc/test/testsupport/fileutils.cc b/webrtc/test/testsupport/fileutils.cc
index 2555f5cc07..899bf31f90 100644
--- a/webrtc/test/testsupport/fileutils.cc
+++ b/webrtc/test/testsupport/fileutils.cc
@@ -106,6 +106,12 @@ bool FileExists(const std::string& file_name) {
   return stat(file_name.c_str(), &file_info) == 0;
 }
 
+bool DirExists(const std::string& directory_name) {
+  struct stat directory_info = {0};
+  return stat(directory_name.c_str(), &directory_info) == 0 && S_ISDIR(
+      directory_info.st_mode);
+}
+
 #ifdef WEBRTC_ANDROID
 
 std::string ProjectRootPath() {
diff --git a/webrtc/test/testsupport/fileutils.h b/webrtc/test/testsupport/fileutils.h
index 1a5f9bbb56..549f96b7e7 100644
--- a/webrtc/test/testsupport/fileutils.h
+++ b/webrtc/test/testsupport/fileutils.h
@@ -74,6 +74,9 @@ bool CreateDir(const std::string& directory_name);
 // Checks if a file exists.
 bool FileExists(const std::string& file_name);
 
+// Checks if a directory exists.
+bool DirExists(const std::string& directory_name);
+
 // File size of the supplied file in bytes. Will return 0 if the file is
 // empty or if the file does not exist/is readable.
 size_t GetFileSize(const std::string& filename);
diff --git a/webrtc/test/testsupport/fileutils_unittest.cc b/webrtc/test/testsupport/fileutils_unittest.cc
index f7ddb1539b..132436f004 100644
--- a/webrtc/test/testsupport/fileutils_unittest.cc
+++ b/webrtc/test/testsupport/fileutils_unittest.cc
@@ -150,4 +150,24 @@ TEST_F(FileUtilsTest, GetFileSizeNonExistingFile) {
   ASSERT_EQ(0u, webrtc::test::GetFileSize("non-existing-file.tmp"));
 }
 
+TEST_F(FileUtilsTest, DirExists) {
+  // Check that an existing directory is recognized as such.
+  ASSERT_TRUE(webrtc::test::DirExists(webrtc::test::OutputPath()))
+      << "Existing directory not found";
+
+  // Check that a non-existing directory is recognized as such.
+  std::string directory = "direxists-unittest-non_existing-dir";
+  ASSERT_FALSE(webrtc::test::DirExists(directory))
+      << "Non-existing directory found";
+
+  // Check that an existing file is not recognized as an existing directory.
+  std::string temp_filename = webrtc::test::TempFilename(
+      webrtc::test::OutputPath(), "TempFilenameTest");
+  ASSERT_TRUE(webrtc::test::FileExists(temp_filename))
+      << "Couldn't find file: " << temp_filename;
+  ASSERT_FALSE(webrtc::test::DirExists(temp_filename))
+      << "Existing file recognized as existing directory";
+  remove(temp_filename.c_str());
+}
+
 }  // namespace webrtc