first cut: establishes base helper classes and main

boot_mode_unittest.cc

+// Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// Tests for cros_boot_mode::BootMode
+
+#include "boot_mode.h"
+
+#include <base/basictypes.h>
+#include <base/file_util.h>
+#include <base/stringprintf.h>
+#include <gtest/gtest.h>
+#include <string>
+
+class BootModeTest : public ::testing::Test {
+ public:
+  void SetUp() {
+    EXPECT_TRUE(file_util::CreateNewTempDirectory("", &temp_dir_));
+
+    developer_switch_path_ = temp_dir_.value();
+    developer_switch_path_.append("/CHSW");
+    developer_switch_.set_platform_file_path(developer_switch_path_.c_str());
+    boot_mode_.set_developer_switch(&developer_switch_);
+
+    bootloader_type_path_ = temp_dir_.value();
+    bootloader_type_path_.append("/cmdline");
+    bootloader_type_.set_platform_file_path(bootloader_type_path_.c_str());
+    boot_mode_.set_bootloader_type(&bootloader_type_);
+
+    firmware_path_ = temp_dir_.value();
+    firmware_path_.append("/BINF.1");
+    active_main_firmware_.set_platform_file_path(firmware_path_.c_str());
+    boot_mode_.set_active_main_firmware(&active_main_firmware_);
+  }
+
+  ~BootModeTest() {
+    TearDown();
+  }
+  void TearDown() {
+    if (!temp_dir_.empty())
+      file_util::Delete(temp_dir_, true);
+    temp_dir_.clear();
+  }
+
+  // In SetUp, the temporary files were created and the paths injected
+  // into the underlying classes.  This helper function wraps updating
+  // each file.  |chsw| contains the dev mode switch value. |fw| contains
+  // the active firmware number, and the |cmdline| is the /proc/cmdline
+  // that the "system" booted in.
+  void UpdateFiles(int chsw, int fw, const char *cmdline) {
+    std::string data = StringPrintf("%d", chsw);
+    EXPECT_EQ(
+      file_util::WriteFile(FilePath(developer_switch_.platform_file_path()),
+                           data.c_str(),
+                           data.length()), data.length());
+
+    data = StringPrintf("%d", fw);
+    EXPECT_EQ(
+      file_util::WriteFile(FilePath(active_main_firmware_.platform_file_path()),
+                           data.c_str(),
+                           data.length()), data.length());
+
+    data.assign(cmdline);
+    EXPECT_EQ(
+      file_util::WriteFile(FilePath(bootloader_type_.platform_file_path()),
+                           data.c_str(),
+                           data.length()), data.length());
+
+  }
+
+  static const char *kUnsupportedText;
+  static const char *kNormalRecoveryText;
+  static const char *kNormalText;
+  static const char *kDeveloperText;
+  static const char *kDeveloperRecoveryText;
+  static const int kNormal = 0x0;
+  static const int kDeveloper = 0x32;
+  static const int kFwRecovery = 0;
+  static const int kFwA = 1;
+  static const int kFwB = 2;
+  static const char *kCrosDebug;
+  static const char *kCrosEfi;
+  static const char *kCrosLegacy;
+  static const char *kCrosSecure;
+ protected:
+   FilePath temp_dir_;
+   cros_boot_mode::BootMode boot_mode_;
+   cros_boot_mode::DeveloperSwitch developer_switch_;
+   std::string developer_switch_path_;
+   cros_boot_mode::ActiveMainFirmware active_main_firmware_;
+   std::string firmware_path_;
+   cros_boot_mode::BootloaderType bootloader_type_;
+   std::string bootloader_type_path_;
+};
+
+const char *BootModeTest::kUnsupportedText = "unsupported";
+const char *BootModeTest::kNormalText = "normal";
+const char *BootModeTest::kNormalRecoveryText = "normal recovery";
+const char *BootModeTest::kDeveloperText = "developer";
+const char *BootModeTest::kDeveloperRecoveryText = "developer recovery";
+const char *BootModeTest::kCrosSecure =
+  "some nonsense dm=\"dacros_securesd ada\" cros_secure";
+const char *BootModeTest::kCrosLegacy =
+  "some nonsense dm=\"dacros_securesd ada\" cros_legacy";
+const char *BootModeTest::kCrosEfi =
+  "some nonsense dm=\"dacros_securesd ada\" cros_efi";
+const char *BootModeTest::kCrosDebug =
+  "some nonsense dm=\"dacros_securesd ada\" cros_debug BOOT=hello";
+
+TEST_F(BootModeTest, NoFilesUseBootloader) {
+  boot_mode_.Initialize(false, true);
+  EXPECT_EQ(cros_boot_mode::BootMode::kUnsupported, boot_mode_.mode());
+  EXPECT_STREQ(kUnsupportedText, boot_mode_.mode_text());
+}
+
+TEST_F(BootModeTest, UnsupportedAsDeveloper) {
+  boot_mode_.Initialize(true, true);
+  EXPECT_EQ(cros_boot_mode::BootMode::kDeveloper, boot_mode_.mode());
+  EXPECT_STREQ(kDeveloperText, boot_mode_.mode_text());
+}
+
+TEST_F(BootModeTest, NormalRecoveryNothingIgnoreBootloader) {
+  UpdateFiles(kNormal, kFwRecovery, " some kernel noise ");
+  boot_mode_.Initialize(false, false);
+  EXPECT_EQ(cros_boot_mode::BootMode::kNormalRecovery, boot_mode_.mode());
+  EXPECT_STREQ(kNormalRecoveryText, boot_mode_.mode_text());
+}
+
+TEST_F(BootModeTest, NormalFwASecureUseBootloader) {
+  UpdateFiles(kNormal, kFwA, kCrosSecure);
+  boot_mode_.Initialize(false, true);
+  EXPECT_EQ(cros_boot_mode::BootMode::kNormal, boot_mode_.mode());
+  EXPECT_STREQ(kNormalText, boot_mode_.mode_text());
+}
+
+TEST_F(BootModeTest, NormalFwBSecureUseBootloader) {
+  UpdateFiles(kNormal, kFwB, kCrosSecure);
+  boot_mode_.Initialize(false, true);
+  EXPECT_EQ(cros_boot_mode::BootMode::kNormal, boot_mode_.mode());
+  EXPECT_STREQ(kNormalText, boot_mode_.mode_text());
+}
+
+TEST_F(BootModeTest, NormalFwASecureIgnoreBootloader) {
+  UpdateFiles(kNormal, kFwA, kCrosSecure);
+  boot_mode_.Initialize(false, false);
+  EXPECT_EQ(cros_boot_mode::BootMode::kNormal, boot_mode_.mode());
+  EXPECT_STREQ(kNormalText, boot_mode_.mode_text());
+}
+
+TEST_F(BootModeTest, NormalFwBSecureIgnoreBootloader) {
+  UpdateFiles(kNormal, kFwB, kCrosSecure);
+  boot_mode_.Initialize(false, false);
+  EXPECT_EQ(cros_boot_mode::BootMode::kNormal, boot_mode_.mode());
+  EXPECT_STREQ(kNormalText, boot_mode_.mode_text());
+}
+
+TEST_F(BootModeTest, BootloaderPreemptsHardwareUseBootloader) {
+  UpdateFiles(kNormal, kFwA, " some kernel noise ");
+  boot_mode_.Initialize(false, true);
+  EXPECT_EQ(cros_boot_mode::BootMode::kUnsupported, boot_mode_.mode());
+  EXPECT_STREQ(kUnsupportedText, boot_mode_.mode_text());
+}
+
+TEST_F(BootModeTest, BootloaderPreemptsHardwareUseBootloaderFwB) {
+  UpdateFiles(kNormal, kFwB, " some kernel noise ");
+  boot_mode_.Initialize(false, true);
+  EXPECT_EQ(cros_boot_mode::BootMode::kUnsupported, boot_mode_.mode());
+  EXPECT_STREQ(kUnsupportedText, boot_mode_.mode_text());
+}
+
+TEST_F(BootModeTest, NormalFwADebugUseBootloader) {
+  UpdateFiles(kNormal, kFwA, kCrosDebug);
+  boot_mode_.Initialize(false, true);
+  EXPECT_EQ(cros_boot_mode::BootMode::kDeveloper, boot_mode_.mode());
+  EXPECT_STREQ(kDeveloperText, boot_mode_.mode_text());
+}
+
+TEST_F(BootModeTest, NormalFwBDebugUseBootloader) {
+  UpdateFiles(kNormal, kFwB, kCrosDebug);
+  boot_mode_.Initialize(false, true);
+  EXPECT_EQ(cros_boot_mode::BootMode::kDeveloper, boot_mode_.mode());
+  EXPECT_STREQ(kDeveloperText, boot_mode_.mode_text());
+}
+
+TEST_F(BootModeTest, UnsupportedDebugUseBootloader) {
+  UpdateFiles(-1, -1, kCrosDebug);
+  boot_mode_.Initialize(false, true);
+  EXPECT_EQ(cros_boot_mode::BootMode::kDeveloper, boot_mode_.mode());
+  EXPECT_STREQ(kDeveloperText, boot_mode_.mode_text());
+}
+
+TEST_F(BootModeTest, EfiIsUnsuppportedUseBootloader) {
+  UpdateFiles(-1, -1, kCrosEfi);
+  boot_mode_.Initialize(false, true);
+  EXPECT_EQ(cros_boot_mode::BootMode::kUnsupported, boot_mode_.mode());
+  EXPECT_STREQ(kUnsupportedText, boot_mode_.mode_text());
+}
+
+TEST_F(BootModeTest, LegacyIsUnsuppportedUseBootloader) {
+  UpdateFiles(-1, -1, kCrosLegacy);
+  boot_mode_.Initialize(false, true);
+  EXPECT_EQ(cros_boot_mode::BootMode::kUnsupported, boot_mode_.mode());
+  EXPECT_STREQ(kUnsupportedText, boot_mode_.mode_text());
+}
+
+TEST_F(BootModeTest, DeveloperFwASecureUseBootloader) {
+  UpdateFiles(kDeveloper, kFwA, kCrosSecure);
+  boot_mode_.Initialize(false, true);
+  EXPECT_EQ(cros_boot_mode::BootMode::kDeveloper, boot_mode_.mode());
+  EXPECT_STREQ(kDeveloperText, boot_mode_.mode_text());
+}
+
+TEST_F(BootModeTest, DeveloperRecoverySecureUseBootloader) {
+  UpdateFiles(kDeveloper, kFwRecovery, kCrosSecure);
+  boot_mode_.Initialize(false, true);
+  EXPECT_EQ(cros_boot_mode::BootMode::kDeveloperRecovery, boot_mode_.mode());
+  EXPECT_STREQ(kDeveloperRecoveryText, boot_mode_.mode_text());
+}