Files: Add basic implementation of Directory and some basic tests.

services/files/files_apptest.cc

Index: services/files/files_apptest.cc
diff --git a/services/files/files_apptest.cc b/services/files/files_apptest.cc
index c5dc5a6b053b3fc82e298083b2a53ee536accedf..5d1b2006aa1b4b82e309655d11a8c1f97af2c699 100644
--- a/services/files/files_apptest.cc
+++ b/services/files/files_apptest.cc
@@ -2,6 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+// TODO(vtl): Split this file.
+
+#include <map>
+#include <string>
 #include <vector>
 
 #include "base/macros.h"
@@ -94,6 +98,15 @@ class FilesAppTest : public test::ApplicationTestBase {
     application_impl()->ConnectToService("mojo:files", &files_);
   }
 
+ protected:
+  void GetTemporaryRoot(DirectoryPtr* directory) {
+    Error error = ERROR_INTERNAL;
+    files()->OpenFileSystem(FILE_SYSTEM_TEMPORARY, GetProxy(directory),
+                            Capture(&error));
+    ASSERT_TRUE(files().WaitForIncomingMethodCall());
+    ASSERT_EQ(ERROR_OK, error);
+  }
+
   FilesPtr& files() { return files_; }
 
  private:
@@ -102,14 +115,14 @@ class FilesAppTest : public test::ApplicationTestBase {
   DISALLOW_COPY_AND_ASSIGN(FilesAppTest);
 };
 
-TEST_F(FilesAppTest, CreateWriteCloseRenameOpenRead) {
-  // Get a temporary root directory.
+// FileImpl --------------------------------------------------------------------
+
+typedef FilesAppTest FileImplTest;
+
+TEST_F(FileImplTest, CreateWriteCloseRenameOpenRead) {
   DirectoryPtr directory;
-  Error error = ERROR_INTERNAL;
-  files()->OpenFileSystem(FILE_SYSTEM_TEMPORARY, GetProxy(&directory),
-                          Capture(&error));
-  ASSERT_TRUE(files().WaitForIncomingMethodCall());
-  EXPECT_EQ(ERROR_OK, error);
+  GetTemporaryRoot(&directory);
+  Error error;
 
   {
     // Create my_file.
@@ -175,14 +188,10 @@ TEST_F(FilesAppTest, CreateWriteCloseRenameOpenRead) {
 
 // Note: Ignore nanoseconds, since it may not always be supported. We expect at
 // least second-resolution support though.
-TEST_F(FilesAppTest, StatTouch) {
-  // Get a temporary root directory.
+TEST_F(FileImplTest, StatTouch) {
   DirectoryPtr directory;
-  Error error = ERROR_INTERNAL;
-  files()->OpenFileSystem(FILE_SYSTEM_TEMPORARY, GetProxy(&directory),
-                          Capture(&error));
-  ASSERT_TRUE(files().WaitForIncomingMethodCall());
-  EXPECT_EQ(ERROR_OK, error);
+  GetTemporaryRoot(&directory);
+  Error error;
 
   // Create my_file.
   FilePtr file;
@@ -262,14 +271,10 @@ TEST_F(FilesAppTest, StatTouch) {
   EXPECT_EQ(ERROR_OK, error);
 }
 
-TEST_F(FilesAppTest, TellSeek) {
-  // Get a temporary root directory.
+TEST_F(FileImplTest, TellSeek) {
   DirectoryPtr directory;
-  Error error = ERROR_INTERNAL;
-  files()->OpenFileSystem(FILE_SYSTEM_TEMPORARY, GetProxy(&directory),
-                          Capture(&error));
-  ASSERT_TRUE(files().WaitForIncomingMethodCall());
-  EXPECT_EQ(ERROR_OK, error);
+  GetTemporaryRoot(&directory);
+  Error error;
 
   // Create my_file.
   FilePtr file;
@@ -357,14 +362,10 @@ TEST_F(FilesAppTest, TellSeek) {
   EXPECT_EQ(ERROR_OK, error);
 }
 
-TEST_F(FilesAppTest, Dup) {
-  // Get a temporary root directory.
+TEST_F(FileImplTest, Dup) {
   DirectoryPtr directory;
-  Error error = ERROR_INTERNAL;
-  files()->OpenFileSystem(FILE_SYSTEM_TEMPORARY, GetProxy(&directory),
-                          Capture(&error));
-  ASSERT_TRUE(files().WaitForIncomingMethodCall());
-  EXPECT_EQ(ERROR_OK, error);
+  GetTemporaryRoot(&directory);
+  Error error;
 
   // Create my_file.
   FilePtr file1;
@@ -456,6 +457,191 @@ TEST_F(FilesAppTest, Dup) {
   // TODO(vtl): Test that |file2| has the same open options as |file1|.
 }
 
+// DirectoryImpl ---------------------------------------------------------------
+
+typedef FilesAppTest DirectoryImplTest;
+
+TEST_F(FileImplTest, Read) {
+  DirectoryPtr directory;
+  GetTemporaryRoot(&directory);
+  Error error;
+
+  // Make some files.
+  const struct {
+    const char* name;
+    uint32_t open_flags;
+  } files_to_create[] = {
+      {"my_file1", kOpenFlagRead | kOpenFlagWrite | kOpenFlagCreate},
+      {"my_file2", kOpenFlagWrite | kOpenFlagCreate | kOpenFlagExclusive},
+      {"my_file3", kOpenFlagWrite | kOpenFlagCreate | kOpenFlagAppend},
+      {"my_file4", kOpenFlagWrite | kOpenFlagCreate | kOpenFlagTruncate}};
+  for (size_t i = 0; i < arraysize(files_to_create); i++) {
+    error = ERROR_INTERNAL;
+    directory->OpenFile(files_to_create[i].name, nullptr,
+                        files_to_create[i].open_flags, Capture(&error));
+    ASSERT_TRUE(directory.WaitForIncomingMethodCall());
+    EXPECT_EQ(ERROR_OK, error);
+  }
+  // Make a directory.
+  error = ERROR_INTERNAL;
+  directory->OpenDirectory("my_dir", nullptr,
+                           kOpenFlagRead | kOpenFlagWrite | kOpenFlagCreate,
+                           Capture(&error));
+  ASSERT_TRUE(directory.WaitForIncomingMethodCall());
+  EXPECT_EQ(ERROR_OK, error);
+
+  error = ERROR_INTERNAL;
+  Array<DirectoryEntryPtr> directory_contents;
+  directory->Read(Capture(&error, &directory_contents));
+  ASSERT_TRUE(directory.WaitForIncomingMethodCall());
+  EXPECT_EQ(ERROR_OK, error);
+
+  // Expected contents of the directory.
+  std::map<std::string, FileType> expected_contents;
+  expected_contents["my_file1"] = FILE_TYPE_REGULAR_FILE;
+  expected_contents["my_file2"] = FILE_TYPE_REGULAR_FILE;
+  expected_contents["my_file3"] = FILE_TYPE_REGULAR_FILE;
+  expected_contents["my_file4"] = FILE_TYPE_REGULAR_FILE;
+  expected_contents["my_dir"] = FILE_TYPE_DIRECTORY;
+  expected_contents["."] = FILE_TYPE_DIRECTORY;
+  expected_contents[".."] = FILE_TYPE_DIRECTORY;
+
+  EXPECT_EQ(expected_contents.size(), directory_contents.size());
+  for (size_t i = 0; i < directory_contents.size(); i++) {
+    ASSERT_TRUE(directory_contents[i]);
+    ASSERT_TRUE(directory_contents[i]->name);
+    auto it = expected_contents.find(directory_contents[i]->name.get());
+    ASSERT_TRUE(it != expected_contents.end());
+    EXPECT_EQ(it->second, directory_contents[i]->type);
+    expected_contents.erase(it);
+  }
+}
+
+// Note: Ignore nanoseconds, since it may not always be supported. We expect at
+// least second-resolution support though.
+// TODO(vtl): Maybe share this with |FileImplTest.StatTouch| ... but then it'd
+// be harder to split this file.
+TEST_F(DirectoryImplTest, StatTouch) {
+  DirectoryPtr directory;
+  GetTemporaryRoot(&directory);
+  Error error;
+
+  // Stat it.
+  error = ERROR_INTERNAL;
+  FileInformationPtr file_info;
+  directory->Stat(Capture(&error, &file_info));
+  ASSERT_TRUE(directory.WaitForIncomingMethodCall());
+  EXPECT_EQ(ERROR_OK, error);
+  ASSERT_FALSE(file_info.is_null());
+  EXPECT_EQ(0, file_info->size);
+  ASSERT_FALSE(file_info->atime.is_null());
+  EXPECT_GT(file_info->atime->seconds, 0);  // Expect that it's not 1970-01-01.
+  ASSERT_FALSE(file_info->mtime.is_null());
+  EXPECT_GT(file_info->mtime->seconds, 0);
+  int64_t first_mtime = file_info->mtime->seconds;
+
+  // Touch only the atime.
+  error = ERROR_INTERNAL;
+  TimespecOrNowPtr t(TimespecOrNow::New());
+  t->now = false;
+  t->timespec = Timespec::New();
+  const int64_t kPartyTime1 = 1234567890;  // Party like it's 2009-02-13.
+  t->timespec->seconds = kPartyTime1;
+  directory->Touch(t.Pass(), nullptr, Capture(&error));
+  ASSERT_TRUE(directory.WaitForIncomingMethodCall());
+  EXPECT_EQ(ERROR_OK, error);
+
+  // Stat again.
+  error = ERROR_INTERNAL;
+  file_info.reset();
+  directory->Stat(Capture(&error, &file_info));
+  ASSERT_TRUE(directory.WaitForIncomingMethodCall());
+  EXPECT_EQ(ERROR_OK, error);
+  ASSERT_FALSE(file_info.is_null());
+  ASSERT_FALSE(file_info->atime.is_null());
+  EXPECT_EQ(kPartyTime1, file_info->atime->seconds);
+  ASSERT_FALSE(file_info->mtime.is_null());
+  EXPECT_EQ(first_mtime, file_info->mtime->seconds);
+
+  // Touch only the mtime.
+  t = TimespecOrNow::New();
+  t->now = false;
+  t->timespec = Timespec::New();
+  const int64_t kPartyTime2 = 1425059525;  // No time like the present.
+  t->timespec->seconds = kPartyTime2;
+  directory->Touch(nullptr, t.Pass(), Capture(&error));
+  ASSERT_TRUE(directory.WaitForIncomingMethodCall());
+  EXPECT_EQ(ERROR_OK, error);
+
+  // Stat again.
+  error = ERROR_INTERNAL;
+  file_info.reset();
+  directory->Stat(Capture(&error, &file_info));
+  ASSERT_TRUE(directory.WaitForIncomingMethodCall());
+  EXPECT_EQ(ERROR_OK, error);
+  ASSERT_FALSE(file_info.is_null());
+  ASSERT_FALSE(file_info->atime.is_null());
+  EXPECT_EQ(kPartyTime1, file_info->atime->seconds);
+  ASSERT_FALSE(file_info->mtime.is_null());
+  EXPECT_EQ(kPartyTime2, file_info->mtime->seconds);
+
+  // TODO(vtl): Also test Touch() "now" options.
+  // TODO(vtl): Also test touching both atime and mtime.
+}
+
+// TODO(vtl): Properly test OpenFile() and OpenDirectory() (including flags).
+
+TEST_F(DirectoryImplTest, BasicRenameDelete) {
+  DirectoryPtr directory;
+  GetTemporaryRoot(&directory);
+  Error error;
+
+  // Create my_file.
+  error = ERROR_INTERNAL;
+  directory->OpenFile("my_file", nullptr, kOpenFlagWrite | kOpenFlagCreate,
+                      Capture(&error));
+  ASSERT_TRUE(directory.WaitForIncomingMethodCall());
+  EXPECT_EQ(ERROR_OK, error);
+
+  // Opening my_file should succeed.
+  error = ERROR_INTERNAL;
+  directory->OpenFile("my_file", nullptr, kOpenFlagRead, Capture(&error));
+  ASSERT_TRUE(directory.WaitForIncomingMethodCall());
+  EXPECT_EQ(ERROR_OK, error);
+
+  // Rename my_file to my_new_file.
+  directory->Rename("my_file", "my_new_file", Capture(&error));
+  ASSERT_TRUE(directory.WaitForIncomingMethodCall());
+  EXPECT_EQ(ERROR_OK, error);
+
+  // Opening my_file should fail.
+  error = ERROR_INTERNAL;
+  directory->OpenFile("my_file", nullptr, kOpenFlagRead, Capture(&error));
+  ASSERT_TRUE(directory.WaitForIncomingMethodCall());
+  EXPECT_EQ(ERROR_UNKNOWN, error);
+
+  // Opening my_new_file should succeed.
+  error = ERROR_INTERNAL;
+  directory->OpenFile("my_new_file", nullptr, kOpenFlagRead, Capture(&error));
+  ASSERT_TRUE(directory.WaitForIncomingMethodCall());
+  EXPECT_EQ(ERROR_OK, error);
+
+  // Delete my_new_file (no flags).
+  directory->Delete("my_new_file", 0, Capture(&error));
+  ASSERT_TRUE(directory.WaitForIncomingMethodCall());
+  EXPECT_EQ(ERROR_OK, error);
+
+  // Opening my_new_file should fail.
+  error = ERROR_INTERNAL;
+  directory->OpenFile("my_new_file", nullptr, kOpenFlagRead, Capture(&error));
+  ASSERT_TRUE(directory.WaitForIncomingMethodCall());
+  EXPECT_EQ(ERROR_UNKNOWN, error);
+}
+
+// TODO(vtl): Test that an open file can be moved (by someone else) without
+// operations on it being affected.
+// TODO(vtl): Test delete flags.
+
 }  // namespace
 }  // namespace files
 }  // namespace mojo