// Copyright 2013 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 "chrome/common/crash_keys.h"

#include <set>
#include <string>

#include "base/command_line.h"
#include "base/strings/strcat.h"
#include "base/strings/stringprintf.h"
#include "build/build_config.h"
#include "build/buildflag.h"
#include "build/chromeos_buildflags.h"
#include "components/crash/core/common/crash_key.h"
#include "gpu/config/gpu_switches.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"

using crash_reporter::GetCrashKeyValue;
using ::testing::IsEmpty;

class CrashKeysTest : public testing::Test {
 public:
  void SetUp() override { crash_reporter::InitializeCrashKeys(); }

  void TearDown() override {
    // Breakpad doesn't properly support ResetCrashKeysForTesting() and usually
    // CHECK fails after it is called.
#if BUILDFLAG(USE_CRASHPAD_ANNOTATION)
    crash_reporter::ResetCrashKeysForTesting();
#endif
  }
};

TEST_F(CrashKeysTest, Extensions) {
  // Set three extensions.
  {
    std::set<std::string> extensions;
    extensions.insert("ext.1");
    extensions.insert("ext.2");
    extensions.insert("ext.3");

    crash_keys::SetActiveExtensions(extensions);

    extensions.erase(GetCrashKeyValue("extension-1"));
    extensions.erase(GetCrashKeyValue("extension-2"));
    extensions.erase(GetCrashKeyValue("extension-3"));
    EXPECT_EQ(0u, extensions.size());

    EXPECT_EQ("3", GetCrashKeyValue("num-extensions"));
    EXPECT_TRUE(GetCrashKeyValue("extension-4").empty());
  }

  // Set more than the max switches.
  {
    std::set<std::string> extensions;
    const int kMax = 12;
    for (int i = 1; i <= kMax; ++i)
      extensions.insert(base::StringPrintf("ext.%d", i));
    crash_keys::SetActiveExtensions(extensions);

    for (int i = 1; i <= kMax; ++i) {
      extensions.erase(GetCrashKeyValue(base::StringPrintf("extension-%d", i)));
    }
    EXPECT_EQ(2u, extensions.size());

    EXPECT_EQ("12", GetCrashKeyValue("num-extensions"));
    EXPECT_TRUE(GetCrashKeyValue("extension-13").empty());
    EXPECT_TRUE(GetCrashKeyValue("extension-14").empty());
  }

  // Set fewer to ensure that old ones are erased.
  {
    std::set<std::string> extensions;
    for (int i = 1; i <= 5; ++i)
      extensions.insert(base::StringPrintf("ext.%d", i));
    crash_keys::SetActiveExtensions(extensions);

    extensions.erase(GetCrashKeyValue("extension-1"));
    extensions.erase(GetCrashKeyValue("extension-2"));
    extensions.erase(GetCrashKeyValue("extension-3"));
    extensions.erase(GetCrashKeyValue("extension-4"));
    extensions.erase(GetCrashKeyValue("extension-5"));
    EXPECT_EQ(0u, extensions.size());

    EXPECT_EQ("5", GetCrashKeyValue("num-extensions"));
    for (int i = 6; i < 20; ++i) {
      std::string key = base::StringPrintf("extension-%d", i);
      EXPECT_TRUE(GetCrashKeyValue(key).empty()) << key;
    }
  }
}

TEST_F(CrashKeysTest, ShouldIgnoreBoringFlags) {
  base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
  std::string expected_num_switches = "7";
  command_line.AppendSwitch("--enable-logging");
  command_line.AppendSwitch("--v=1");

  command_line.AppendSwitch("--vv=1");
  command_line.AppendSwitch("--vvv");
  command_line.AppendSwitch("--enable-multi-profiles");
  command_line.AppendSwitch("--device-management-url=https://foo/bar");
  command_line.AppendSwitch(
      base::StrCat({"--", switches::kGpuPreferences, "=ABC123"}));
#if BUILDFLAG(IS_CHROMEOS_ASH)
  command_line.AppendSwitch("--user-data-dir=/tmp");
  command_line.AppendSwitch("--default-wallpaper-small=test.png");
  expected_num_switches = "9";
#endif

  crash_keys::SetCrashKeysFromCommandLine(command_line);

  EXPECT_EQ("--vv=1", GetCrashKeyValue("switch-1"));
  EXPECT_EQ("--vvv", GetCrashKeyValue("switch-2"));
  EXPECT_EQ("--enable-multi-profiles", GetCrashKeyValue("switch-3"));
  EXPECT_EQ("--device-management-url=https://foo/bar",
            GetCrashKeyValue("switch-4"));
  EXPECT_EQ(expected_num_switches, GetCrashKeyValue("num-switches"));
  EXPECT_TRUE(GetCrashKeyValue("switch-5").empty());
}

#if BUILDFLAG(IS_CHROMEOS)
TEST_F(CrashKeysTest, EnabledDisabledFeaturesFlags) {
  base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
  command_line.InitFromArgv(
      {"program_name", "--example", "--enable-features=AEnabledFeatureFlag",
       "--unrelated-flag=23", "--disable-features=ADisabledFeaturesString",
       "--more-example=yes"});

  crash_keys::SetCrashKeysFromCommandLine(command_line);

  EXPECT_EQ("AEnabledFeatureFlag",
            GetCrashKeyValue("commandline-enabled-feature-1"));
  EXPECT_EQ("ADisabledFeaturesString",
            GetCrashKeyValue("commandline-disabled-feature-1"));

  // Unrelated flags are not affected by the enable-features extraction.
  EXPECT_EQ("--example", GetCrashKeyValue("switch-1"));
  EXPECT_EQ("--unrelated-flag=23", GetCrashKeyValue("switch-2"));
  EXPECT_EQ("--more-example=yes", GetCrashKeyValue("switch-3"));
  // --enable-features and --disable-features are still counted in num-switches.
  EXPECT_EQ("5", GetCrashKeyValue("num-switches"));
}

TEST_F(CrashKeysTest, ShouldCreateCrashKeyForEachEnabledFeature) {
  base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
  command_line.InitFromArgv({"program_name", "--example",
                             "--enable-features=FirstFeature,SecondFeature",
                             "--unrelated-flag=23", "--more-example=yes"});

  crash_keys::SetCrashKeysFromCommandLine(command_line);

  EXPECT_EQ("FirstFeature", GetCrashKeyValue("commandline-enabled-feature-1"));
  EXPECT_EQ("SecondFeature", GetCrashKeyValue("commandline-enabled-feature-2"));

  EXPECT_EQ(GetCrashKeyValue("commandline-enabled-feature-3"), "");
}

TEST_F(CrashKeysTest, ShouldCreateCrashKeyForEachDisabledFeature) {
  base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
  command_line.InitFromArgv({"program_name", "--example",
                             "--disable-features=FirstFeature,SecondFeature",
                             "--unrelated-flag=23", "--more-example=yes"});

  crash_keys::SetCrashKeysFromCommandLine(command_line);

  EXPECT_EQ("FirstFeature", GetCrashKeyValue("commandline-disabled-feature-1"));
  EXPECT_EQ("SecondFeature",
            GetCrashKeyValue("commandline-disabled-feature-2"));

  EXPECT_EQ(GetCrashKeyValue("commandline-disabled-feature-3"), "");
}

TEST_F(CrashKeysTest,
       EnabledDisabledFeatures_LastCommandArgumentShouldBeRetained) {
  base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
  command_line.InitFromArgv(
      {"program_name", "--enable-features=FeatureEnabledInFirstArgument",
       "--disable-features=FeatureDisabledInFirstArgument",
       "--enable-features=FeatureEnabledInSecondArgument",
       "--disable-features=FeatureDisabledInSecondArgument"});

  crash_keys::SetCrashKeysFromCommandLine(command_line);

  EXPECT_EQ("FeatureEnabledInSecondArgument",
            GetCrashKeyValue("commandline-enabled-feature-1"));
  EXPECT_EQ("FeatureDisabledInSecondArgument",
            GetCrashKeyValue("commandline-disabled-feature-1"));
}

TEST_F(
    CrashKeysTest,
    EnabledDisabledFeatures_ShouldClearPreviousCrashKeysIfCommandLineIsReparsed) {
  {
    base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
    command_line.InitFromArgv(
        {"program_name", "--enable-features=OriginalEnable_1, OriginalEnable_2",
         "--disable-features=OriginalDisable_1, OriginalDisable_2"});
    crash_keys::SetCrashKeysFromCommandLine(command_line);

    EXPECT_EQ("OriginalEnable_1",
              GetCrashKeyValue("commandline-enabled-feature-1"));
    EXPECT_EQ("OriginalEnable_2",
              GetCrashKeyValue("commandline-enabled-feature-2"));

    EXPECT_EQ("OriginalDisable_1",
              GetCrashKeyValue("commandline-disabled-feature-1"));
    EXPECT_EQ("OriginalDisable_2",
              GetCrashKeyValue("commandline-disabled-feature-2"));
  }

  // Parse a command line with only a single value in each flag.
  {
    base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
    command_line.InitFromArgv({"program_name", "--enable-features=NewEnable",
                               "--disable-features=NewDisable"});
    crash_keys::SetCrashKeysFromCommandLine(command_line);

    EXPECT_EQ("NewEnable", GetCrashKeyValue("commandline-enabled-feature-1"));
    EXPECT_EQ(GetCrashKeyValue("commandline-enabled-feature-2"), "");

    EXPECT_EQ("NewDisable", GetCrashKeyValue("commandline-disabled-feature-1"));
    EXPECT_EQ(GetCrashKeyValue("commandline-disabled-feature-2"), "");
  }

  // Parse a command line with no enable-features or disable-features flags.
  {
    base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
    command_line.InitFromArgv(
        {"program_name", "--enable-logging", "--type=renderer"});
    crash_keys::SetCrashKeysFromCommandLine(command_line);
    EXPECT_EQ(GetCrashKeyValue("commandline-enabled-feature-1"), "");
    EXPECT_EQ(GetCrashKeyValue("commandline-enabled-feature-2"), "");
    EXPECT_EQ(GetCrashKeyValue("commandline-disabled-feature-1"), "");
    EXPECT_EQ(GetCrashKeyValue("commandline-disabled-feature-2"), "");
  }

  // Parse a new command line with enable-features or disable-features flags.
  {
    base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
    command_line.InitFromArgv({"program_name", "--enable-features=NewEnable",
                               "--disable-features=NewDisable"});
    crash_keys::SetCrashKeysFromCommandLine(command_line);
    EXPECT_EQ("NewEnable", GetCrashKeyValue("commandline-enabled-feature-1"));
    EXPECT_EQ("NewDisable", GetCrashKeyValue("commandline-disabled-feature-1"));
  }
}

#endif  // BUILDFLAG(IS_CHROMEOS)