Test for --nacl-gdb functionality.

chrome/browser/nacl_host/test/nacl_gdb_browsertest.cc

+// 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.
+
+#include "base/command_line.h"
+#include "base/environment.h"
+#include "base/file_util.h"
+#include "base/path_service.h"
+#include "base/win/windows_version.h"
+#include "chrome/common/chrome_switches.h"
+#include "chrome/test/ui/ppapi_uitest.h"
+
+static const FilePath::CharType kMockNaClGdb[] =
+#if defined(OS_WIN)
+    FILE_PATH_LITERAL("mock_nacl_gdb.exe");
+#else
+    FILE_PATH_LITERAL("mock_nacl_gdb");
+#endif
+
+class NaClGdbTest : public PPAPINaClTest {
+ public:
+  NaClGdbTest() {
+  }
+
+  void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
+    PPAPINaClTest::SetUpCommandLine(command_line);
+
+    FilePath mock_nacl_gdb;
+    EXPECT_TRUE(PathService::Get(base::DIR_EXE, &mock_nacl_gdb));
+    mock_nacl_gdb = mock_nacl_gdb.Append(kMockNaClGdb);
+    command_line->AppendSwitchPath(switches::kNaClGdb, mock_nacl_gdb);
+  }
+};
+
+IN_PROC_BROWSER_TEST_F(NaClGdbTest, Empty) {
+  FilePath mock_nacl_gdb_file;
+  scoped_ptr<base::Environment> env(base::Environment::Create());
+  // TODO(halyavin): Make this test to work on Windows 32-bit. Currently this
+  // is not possible because NaCl doesn't work without sandbox since 1Gb of
+  // space is not reserved. We can't reserve 1Gb of space because
+  // base::LaunchProcess doesn't support creating suspended processes. We need
+  // to either add suspended process support to base::LaunchProcess or use
+  // Win API.
+  if (base::win::OSInfo::GetInstance()->wow64_status() ==
+      base::win::OSInfo::WOW64_DISABLED) {
+    return;
+  }
+  EXPECT_TRUE(file_util::CreateTemporaryFile(&mock_nacl_gdb_file));
+  env->SetVar("MOCK_NACL_GDB", mock_nacl_gdb_file.AsUTF8Unsafe());

[Mark Seaborn, 2012/03/16 17:28:59]

Can you unset the env var afterwards so that it doesn't leak into subsequent
tests?

[halyavin, 2012/03/16 17:57:42]

Done.

+  RunTestViaHTTP("Empty");
+  EXPECT_TRUE(file_util::PathExists(mock_nacl_gdb_file));

[Mark Seaborn, 2012/03/16 17:28:59]

Surely the file will exist regardless of whether the mock nacl-gdb got run,
because CreateTemporaryFile() creates it?  As I suggested before, you should
have the mock nacl-gdb write a string to the file, and check for that string
here.

[halyavin, 2012/03/16 17:57:42]

Done.

+  EXPECT_TRUE(file_util::Delete(mock_nacl_gdb_file, false));
+}