// Copyright 2014 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 "extensions/common/features/simple_feature.h"

#include <stddef.h>

#include <string>

#include "base/command_line.h"
#include "base/macros.h"
#include "base/stl_util.h"
#include "base/values.h"
#include "extensions/common/manifest.h"
#include "extensions/common/value_builder.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace extensions {

namespace {

struct IsAvailableTestData {
  std::string extension_id;
  Manifest::Type extension_type;
  Manifest::Location location;
  Feature::Platform platform;
  int manifest_version;
  Feature::AvailabilityResult expected_result;
};

class ScopedCommandLineSwitch {
 public:
  explicit ScopedCommandLineSwitch(const std::string& arg)
      : original_command_line_(*base::CommandLine::ForCurrentProcess()) {
    base::CommandLine::ForCurrentProcess()->AppendSwitch(arg);
  }

  ~ScopedCommandLineSwitch() {
    *base::CommandLine::ForCurrentProcess() = original_command_line_;
  }

 private:
  base::CommandLine original_command_line_;
};

}  // namespace

class SimpleFeatureTest : public testing::Test {
 protected:
  bool LocationIsAvailable(SimpleFeature::Location feature_location,
                           Manifest::Location manifest_location) {
    SimpleFeature feature;
    feature.set_location(feature_location);
    Feature::AvailabilityResult availability_result =
        feature.IsAvailableToManifest(std::string(),
                                      Manifest::TYPE_UNKNOWN,
                                      manifest_location,
                                      -1,
                                      Feature::UNSPECIFIED_PLATFORM).result();
    return availability_result == Feature::IS_AVAILABLE;
  }
};

TEST_F(SimpleFeatureTest, IsAvailableNullCase) {
  const IsAvailableTestData tests[] = {
      {"", Manifest::TYPE_UNKNOWN, Manifest::INVALID_LOCATION,
       Feature::UNSPECIFIED_PLATFORM, -1, Feature::IS_AVAILABLE},
      {"random-extension", Manifest::TYPE_UNKNOWN, Manifest::INVALID_LOCATION,
       Feature::UNSPECIFIED_PLATFORM, -1, Feature::IS_AVAILABLE},
      {"", Manifest::TYPE_LEGACY_PACKAGED_APP, Manifest::INVALID_LOCATION,
       Feature::UNSPECIFIED_PLATFORM, -1, Feature::IS_AVAILABLE},
      {"", Manifest::TYPE_UNKNOWN, Manifest::INVALID_LOCATION,
       Feature::UNSPECIFIED_PLATFORM, -1, Feature::IS_AVAILABLE},
      {"", Manifest::TYPE_UNKNOWN, Manifest::COMPONENT,
       Feature::UNSPECIFIED_PLATFORM, -1, Feature::IS_AVAILABLE},
      {"", Manifest::TYPE_UNKNOWN, Manifest::INVALID_LOCATION,
       Feature::CHROMEOS_PLATFORM, -1, Feature::IS_AVAILABLE},
      {"", Manifest::TYPE_UNKNOWN, Manifest::INVALID_LOCATION,
       Feature::UNSPECIFIED_PLATFORM, 25, Feature::IS_AVAILABLE}};

  SimpleFeature feature;
  for (size_t i = 0; i < arraysize(tests); ++i) {
    const IsAvailableTestData& test = tests[i];
    EXPECT_EQ(test.expected_result,
              feature.IsAvailableToManifest(test.extension_id,
                                            test.extension_type,
                                            test.location,
                                            test.manifest_version,
                                            test.platform).result());
  }
}

TEST_F(SimpleFeatureTest, Whitelist) {
  const std::string kIdFoo("fooabbbbccccddddeeeeffffgggghhhh");
  const std::string kIdBar("barabbbbccccddddeeeeffffgggghhhh");
  const std::string kIdBaz("bazabbbbccccddddeeeeffffgggghhhh");
  SimpleFeature feature;
  feature.whitelist()->push_back(kIdFoo);
  feature.whitelist()->push_back(kIdBar);

  EXPECT_EQ(
      Feature::IS_AVAILABLE,
      feature.IsAvailableToManifest(kIdFoo,
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());
  EXPECT_EQ(
      Feature::IS_AVAILABLE,
      feature.IsAvailableToManifest(kIdBar,
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());

  EXPECT_EQ(
      Feature::NOT_FOUND_IN_WHITELIST,
      feature.IsAvailableToManifest(kIdBaz,
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());
  EXPECT_EQ(
      Feature::NOT_FOUND_IN_WHITELIST,
      feature.IsAvailableToManifest(std::string(),
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());

  feature.extension_types()->push_back(Manifest::TYPE_LEGACY_PACKAGED_APP);
  EXPECT_EQ(
      Feature::NOT_FOUND_IN_WHITELIST,
      feature.IsAvailableToManifest(kIdBaz,
                                    Manifest::TYPE_LEGACY_PACKAGED_APP,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());
}

TEST_F(SimpleFeatureTest, HashedIdWhitelist) {
  // echo -n "fooabbbbccccddddeeeeffffgggghhhh" |
  //   sha1sum | tr '[:lower:]' '[:upper:]'
  const std::string kIdFoo("fooabbbbccccddddeeeeffffgggghhhh");
  const std::string kIdFooHashed("55BC7228A0D502A2A48C9BB16B07062A01E62897");
  SimpleFeature feature;

  feature.whitelist()->push_back(kIdFooHashed);

  EXPECT_EQ(
      Feature::IS_AVAILABLE,
      feature.IsAvailableToManifest(kIdFoo,
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());
  EXPECT_NE(
      Feature::IS_AVAILABLE,
      feature.IsAvailableToManifest(kIdFooHashed,
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());
  EXPECT_EQ(
      Feature::NOT_FOUND_IN_WHITELIST,
      feature.IsAvailableToManifest("slightlytoooolongforanextensionid",
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());
  EXPECT_EQ(
      Feature::NOT_FOUND_IN_WHITELIST,
      feature.IsAvailableToManifest("tooshortforanextensionid",
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());
}

TEST_F(SimpleFeatureTest, Blacklist) {
  const std::string kIdFoo("fooabbbbccccddddeeeeffffgggghhhh");
  const std::string kIdBar("barabbbbccccddddeeeeffffgggghhhh");
  const std::string kIdBaz("bazabbbbccccddddeeeeffffgggghhhh");
  SimpleFeature feature;
  feature.blacklist()->push_back(kIdFoo);
  feature.blacklist()->push_back(kIdBar);

  EXPECT_EQ(
      Feature::FOUND_IN_BLACKLIST,
      feature.IsAvailableToManifest(kIdFoo,
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());
  EXPECT_EQ(
      Feature::FOUND_IN_BLACKLIST,
      feature.IsAvailableToManifest(kIdBar,
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());

  EXPECT_EQ(
      Feature::IS_AVAILABLE,
      feature.IsAvailableToManifest(kIdBaz,
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());
  EXPECT_EQ(
      Feature::IS_AVAILABLE,
      feature.IsAvailableToManifest(std::string(),
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());
}

TEST_F(SimpleFeatureTest, HashedIdBlacklist) {
  // echo -n "fooabbbbccccddddeeeeffffgggghhhh" |
  //   sha1sum | tr '[:lower:]' '[:upper:]'
  const std::string kIdFoo("fooabbbbccccddddeeeeffffgggghhhh");
  const std::string kIdFooHashed("55BC7228A0D502A2A48C9BB16B07062A01E62897");
  SimpleFeature feature;

  feature.blacklist()->push_back(kIdFooHashed);

  EXPECT_EQ(
      Feature::FOUND_IN_BLACKLIST,
      feature.IsAvailableToManifest(kIdFoo,
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());
  EXPECT_NE(
      Feature::FOUND_IN_BLACKLIST,
      feature.IsAvailableToManifest(kIdFooHashed,
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());
  EXPECT_EQ(
      Feature::IS_AVAILABLE,
      feature.IsAvailableToManifest("slightlytoooolongforanextensionid",
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());
  EXPECT_EQ(
      Feature::IS_AVAILABLE,
      feature.IsAvailableToManifest("tooshortforanextensionid",
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());
}

TEST_F(SimpleFeatureTest, PackageType) {
  SimpleFeature feature;
  feature.extension_types()->push_back(Manifest::TYPE_EXTENSION);
  feature.extension_types()->push_back(Manifest::TYPE_LEGACY_PACKAGED_APP);

  EXPECT_EQ(
      Feature::IS_AVAILABLE,
      feature.IsAvailableToManifest(std::string(),
                                    Manifest::TYPE_EXTENSION,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());
  EXPECT_EQ(
      Feature::IS_AVAILABLE,
      feature.IsAvailableToManifest(std::string(),
                                    Manifest::TYPE_LEGACY_PACKAGED_APP,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());

  EXPECT_EQ(
      Feature::INVALID_TYPE,
      feature.IsAvailableToManifest(std::string(),
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());
  EXPECT_EQ(
      Feature::INVALID_TYPE,
      feature.IsAvailableToManifest(std::string(),
                                    Manifest::TYPE_THEME,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());
}

TEST_F(SimpleFeatureTest, Context) {
  SimpleFeature feature;
  feature.set_name("somefeature");
  feature.contexts()->push_back(Feature::BLESSED_EXTENSION_CONTEXT);
  feature.extension_types()->push_back(Manifest::TYPE_LEGACY_PACKAGED_APP);
  feature.platforms()->push_back(Feature::CHROMEOS_PLATFORM);
  feature.set_min_manifest_version(21);
  feature.set_max_manifest_version(25);

  base::DictionaryValue manifest;
  manifest.SetString("name", "test");
  manifest.SetString("version", "1");
  manifest.SetInteger("manifest_version", 21);
  manifest.SetString("app.launch.local_path", "foo.html");

  std::string error;
  scoped_refptr<const Extension> extension(Extension::Create(
      base::FilePath(), Manifest::INTERNAL, manifest, Extension::NO_FLAGS,
      &error));
  EXPECT_EQ("", error);
  ASSERT_TRUE(extension.get());

  feature.whitelist()->push_back("monkey");
  EXPECT_EQ(Feature::NOT_FOUND_IN_WHITELIST, feature.IsAvailableToContext(
      extension.get(), Feature::BLESSED_EXTENSION_CONTEXT,
      Feature::CHROMEOS_PLATFORM).result());
  feature.whitelist()->clear();

  feature.extension_types()->clear();
  feature.extension_types()->push_back(Manifest::TYPE_THEME);
  {
    Feature::Availability availability = feature.IsAvailableToContext(
        extension.get(), Feature::BLESSED_EXTENSION_CONTEXT,
        Feature::CHROMEOS_PLATFORM);
    EXPECT_EQ(Feature::INVALID_TYPE, availability.result());
    EXPECT_EQ("'somefeature' is only allowed for themes, "
              "but this is a legacy packaged app.",
              availability.message());
  }

  feature.extension_types()->clear();
  feature.extension_types()->push_back(Manifest::TYPE_LEGACY_PACKAGED_APP);
  feature.contexts()->clear();
  feature.contexts()->push_back(Feature::UNBLESSED_EXTENSION_CONTEXT);
  feature.contexts()->push_back(Feature::CONTENT_SCRIPT_CONTEXT);
  {
    Feature::Availability availability = feature.IsAvailableToContext(
        extension.get(), Feature::BLESSED_EXTENSION_CONTEXT,
        Feature::CHROMEOS_PLATFORM);
    EXPECT_EQ(Feature::INVALID_CONTEXT, availability.result());
    EXPECT_EQ("'somefeature' is only allowed to run in extension iframes and "
              "content scripts, but this is a privileged page",
              availability.message());
  }

  feature.contexts()->push_back(Feature::WEB_PAGE_CONTEXT);
  {
    Feature::Availability availability = feature.IsAvailableToContext(
        extension.get(), Feature::BLESSED_EXTENSION_CONTEXT,
        Feature::CHROMEOS_PLATFORM);
    EXPECT_EQ(Feature::INVALID_CONTEXT, availability.result());
    EXPECT_EQ("'somefeature' is only allowed to run in extension iframes, "
              "content scripts, and web pages, but this is a privileged page",
              availability.message());
  }

  feature.contexts()->clear();
  feature.contexts()->push_back(Feature::BLESSED_EXTENSION_CONTEXT);
  feature.set_location(SimpleFeature::COMPONENT_LOCATION);
  EXPECT_EQ(Feature::INVALID_LOCATION, feature.IsAvailableToContext(
      extension.get(), Feature::BLESSED_EXTENSION_CONTEXT,
      Feature::CHROMEOS_PLATFORM).result());
  feature.set_location(SimpleFeature::UNSPECIFIED_LOCATION);

  EXPECT_EQ(Feature::INVALID_PLATFORM, feature.IsAvailableToContext(
      extension.get(), Feature::BLESSED_EXTENSION_CONTEXT,
      Feature::UNSPECIFIED_PLATFORM).result());

  feature.set_min_manifest_version(22);
  EXPECT_EQ(Feature::INVALID_MIN_MANIFEST_VERSION, feature.IsAvailableToContext(
      extension.get(), Feature::BLESSED_EXTENSION_CONTEXT,
      Feature::CHROMEOS_PLATFORM).result());
  feature.set_min_manifest_version(21);

  feature.set_max_manifest_version(18);
  EXPECT_EQ(Feature::INVALID_MAX_MANIFEST_VERSION, feature.IsAvailableToContext(
      extension.get(), Feature::BLESSED_EXTENSION_CONTEXT,
      Feature::CHROMEOS_PLATFORM).result());
  feature.set_max_manifest_version(25);
}

TEST_F(SimpleFeatureTest, Location) {
  // Component extensions can access any location.
  EXPECT_TRUE(LocationIsAvailable(SimpleFeature::COMPONENT_LOCATION,
                                  Manifest::COMPONENT));
  EXPECT_TRUE(LocationIsAvailable(SimpleFeature::EXTERNAL_COMPONENT_LOCATION,
                                  Manifest::COMPONENT));
  EXPECT_TRUE(
      LocationIsAvailable(SimpleFeature::POLICY_LOCATION, Manifest::COMPONENT));
  EXPECT_TRUE(LocationIsAvailable(SimpleFeature::UNSPECIFIED_LOCATION,
                                  Manifest::COMPONENT));

  // Only component extensions can access the "component" location.
  EXPECT_FALSE(LocationIsAvailable(SimpleFeature::COMPONENT_LOCATION,
                                   Manifest::INVALID_LOCATION));
  EXPECT_FALSE(LocationIsAvailable(SimpleFeature::COMPONENT_LOCATION,
                                   Manifest::UNPACKED));
  EXPECT_FALSE(LocationIsAvailable(SimpleFeature::COMPONENT_LOCATION,
                                   Manifest::EXTERNAL_COMPONENT));
  EXPECT_FALSE(LocationIsAvailable(SimpleFeature::COMPONENT_LOCATION,
                                   Manifest::EXTERNAL_PREF_DOWNLOAD));
  EXPECT_FALSE(LocationIsAvailable(SimpleFeature::COMPONENT_LOCATION,
                                   Manifest::EXTERNAL_POLICY));
  EXPECT_FALSE(LocationIsAvailable(SimpleFeature::COMPONENT_LOCATION,
                                   Manifest::EXTERNAL_POLICY_DOWNLOAD));

  // Policy extensions can access the "policy" location.
  EXPECT_TRUE(LocationIsAvailable(SimpleFeature::POLICY_LOCATION,
                                  Manifest::EXTERNAL_POLICY));
  EXPECT_TRUE(LocationIsAvailable(SimpleFeature::POLICY_LOCATION,
                                  Manifest::EXTERNAL_POLICY_DOWNLOAD));

  // Non-policy (except component) extensions cannot access policy.
  EXPECT_FALSE(LocationIsAvailable(SimpleFeature::POLICY_LOCATION,
                                   Manifest::EXTERNAL_COMPONENT));
  EXPECT_FALSE(LocationIsAvailable(SimpleFeature::POLICY_LOCATION,
                                   Manifest::INVALID_LOCATION));
  EXPECT_FALSE(
      LocationIsAvailable(SimpleFeature::POLICY_LOCATION, Manifest::UNPACKED));
  EXPECT_FALSE(LocationIsAvailable(SimpleFeature::POLICY_LOCATION,
                                   Manifest::EXTERNAL_PREF_DOWNLOAD));

  // External component extensions can access the "external_component"
  // location.
  EXPECT_TRUE(LocationIsAvailable(SimpleFeature::EXTERNAL_COMPONENT_LOCATION,
                                  Manifest::EXTERNAL_COMPONENT));
}

TEST_F(SimpleFeatureTest, Platform) {
  SimpleFeature feature;
  feature.platforms()->push_back(Feature::CHROMEOS_PLATFORM);
  EXPECT_EQ(Feature::IS_AVAILABLE,
            feature.IsAvailableToManifest(std::string(),
                                          Manifest::TYPE_UNKNOWN,
                                          Manifest::INVALID_LOCATION,
                                          -1,
                                          Feature::CHROMEOS_PLATFORM).result());
  EXPECT_EQ(
      Feature::INVALID_PLATFORM,
      feature.IsAvailableToManifest(std::string(),
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    -1,
                                    Feature::UNSPECIFIED_PLATFORM).result());
}

TEST_F(SimpleFeatureTest, ManifestVersion) {
  SimpleFeature feature;
  feature.set_min_manifest_version(5);

  EXPECT_EQ(
      Feature::INVALID_MIN_MANIFEST_VERSION,
      feature.IsAvailableToManifest(std::string(),
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    0,
                                    Feature::UNSPECIFIED_PLATFORM).result());
  EXPECT_EQ(
      Feature::INVALID_MIN_MANIFEST_VERSION,
      feature.IsAvailableToManifest(std::string(),
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    4,
                                    Feature::UNSPECIFIED_PLATFORM).result());

  EXPECT_EQ(
      Feature::IS_AVAILABLE,
      feature.IsAvailableToManifest(std::string(),
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    5,
                                    Feature::UNSPECIFIED_PLATFORM).result());
  EXPECT_EQ(
      Feature::IS_AVAILABLE,
      feature.IsAvailableToManifest(std::string(),
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    10,
                                    Feature::UNSPECIFIED_PLATFORM).result());

  feature.set_max_manifest_version(8);

  EXPECT_EQ(
      Feature::INVALID_MAX_MANIFEST_VERSION,
      feature.IsAvailableToManifest(std::string(),
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    10,
                                    Feature::UNSPECIFIED_PLATFORM).result());
  EXPECT_EQ(
      Feature::IS_AVAILABLE,
      feature.IsAvailableToManifest(std::string(),
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    8,
                                    Feature::UNSPECIFIED_PLATFORM).result());
  EXPECT_EQ(
      Feature::IS_AVAILABLE,
      feature.IsAvailableToManifest(std::string(),
                                    Manifest::TYPE_UNKNOWN,
                                    Manifest::INVALID_LOCATION,
                                    7,
                                    Feature::UNSPECIFIED_PLATFORM).result());
}

TEST_F(SimpleFeatureTest, ParseNull) {
  scoped_ptr<base::DictionaryValue> value(new base::DictionaryValue());
  scoped_ptr<SimpleFeature> feature(new SimpleFeature());
  feature->Parse(value.get());
  EXPECT_TRUE(feature->whitelist()->empty());
  EXPECT_TRUE(feature->extension_types()->empty());
  EXPECT_TRUE(feature->contexts()->empty());
  EXPECT_EQ(SimpleFeature::UNSPECIFIED_LOCATION, feature->location());
  EXPECT_TRUE(feature->platforms()->empty());
  EXPECT_EQ(0, feature->min_manifest_version());
  EXPECT_EQ(0, feature->max_manifest_version());
}

TEST_F(SimpleFeatureTest, ParseWhitelist) {
  scoped_ptr<base::DictionaryValue> value(new base::DictionaryValue());
  base::ListValue* whitelist = new base::ListValue();
  whitelist->Append(new base::StringValue("foo"));
  whitelist->Append(new base::StringValue("bar"));
  value->Set("whitelist", whitelist);
  scoped_ptr<SimpleFeature> feature(new SimpleFeature());
  feature->Parse(value.get());
  EXPECT_EQ(2u, feature->whitelist()->size());
  EXPECT_TRUE(STLCount(*(feature->whitelist()), "foo"));
  EXPECT_TRUE(STLCount(*(feature->whitelist()), "bar"));
}

TEST_F(SimpleFeatureTest, ParsePackageTypes) {
  scoped_ptr<base::DictionaryValue> value(new base::DictionaryValue());
  base::ListValue* extension_types = new base::ListValue();
  extension_types->Append(new base::StringValue("extension"));
  extension_types->Append(new base::StringValue("theme"));
  extension_types->Append(new base::StringValue("legacy_packaged_app"));
  extension_types->Append(new base::StringValue("hosted_app"));
  extension_types->Append(new base::StringValue("platform_app"));
  extension_types->Append(new base::StringValue("shared_module"));
  value->Set("extension_types", extension_types);
  scoped_ptr<SimpleFeature> feature(new SimpleFeature());
  feature->Parse(value.get());
  EXPECT_EQ(6u, feature->extension_types()->size());
  EXPECT_TRUE(
      STLCount(*(feature->extension_types()), Manifest::TYPE_EXTENSION));
  EXPECT_TRUE(
      STLCount(*(feature->extension_types()), Manifest::TYPE_THEME));
  EXPECT_TRUE(
      STLCount(
          *(feature->extension_types()), Manifest::TYPE_LEGACY_PACKAGED_APP));
  EXPECT_TRUE(
      STLCount(*(feature->extension_types()), Manifest::TYPE_HOSTED_APP));
  EXPECT_TRUE(
      STLCount(*(feature->extension_types()), Manifest::TYPE_PLATFORM_APP));
  EXPECT_TRUE(
      STLCount(*(feature->extension_types()), Manifest::TYPE_SHARED_MODULE));

  value->SetString("extension_types", "all");
  scoped_ptr<SimpleFeature> feature2(new SimpleFeature());
  feature2->Parse(value.get());
  EXPECT_EQ(*(feature->extension_types()), *(feature2->extension_types()));
}

TEST_F(SimpleFeatureTest, ParseContexts) {
  scoped_ptr<base::DictionaryValue> value(new base::DictionaryValue());
  base::ListValue* contexts = new base::ListValue();
  contexts->Append(new base::StringValue("blessed_extension"));
  contexts->Append(new base::StringValue("unblessed_extension"));
  contexts->Append(new base::StringValue("content_script"));
  contexts->Append(new base::StringValue("web_page"));
  contexts->Append(new base::StringValue("blessed_web_page"));
  contexts->Append(new base::StringValue("webui"));
  value->Set("contexts", contexts);
  scoped_ptr<SimpleFeature> feature(new SimpleFeature());
  feature->Parse(value.get());
  EXPECT_EQ(6u, feature->contexts()->size());
  EXPECT_TRUE(
      STLCount(*(feature->contexts()), Feature::BLESSED_EXTENSION_CONTEXT));
  EXPECT_TRUE(
      STLCount(*(feature->contexts()), Feature::UNBLESSED_EXTENSION_CONTEXT));
  EXPECT_TRUE(
      STLCount(*(feature->contexts()), Feature::CONTENT_SCRIPT_CONTEXT));
  EXPECT_TRUE(
      STLCount(*(feature->contexts()), Feature::WEB_PAGE_CONTEXT));
  EXPECT_TRUE(
      STLCount(*(feature->contexts()), Feature::BLESSED_WEB_PAGE_CONTEXT));

  value->SetString("contexts", "all");
  scoped_ptr<SimpleFeature> feature2(new SimpleFeature());
  feature2->Parse(value.get());
  EXPECT_EQ(*(feature->contexts()), *(feature2->contexts()));
}

TEST_F(SimpleFeatureTest, ParseLocation) {
  scoped_ptr<base::DictionaryValue> value(new base::DictionaryValue());
  value->SetString("location", "component");
  scoped_ptr<SimpleFeature> feature(new SimpleFeature());
  feature->Parse(value.get());
  EXPECT_EQ(SimpleFeature::COMPONENT_LOCATION, feature->location());
}

TEST_F(SimpleFeatureTest, ParsePlatforms) {
  scoped_ptr<base::DictionaryValue> value(new base::DictionaryValue());
  scoped_ptr<SimpleFeature> feature(new SimpleFeature());
  base::ListValue* platforms = new base::ListValue();
  value->Set("platforms", platforms);
  feature->Parse(value.get());
  EXPECT_TRUE(feature->platforms()->empty());

  platforms->AppendString("chromeos");
  feature->Parse(value.get());
  EXPECT_FALSE(feature->platforms()->empty());
  EXPECT_EQ(Feature::CHROMEOS_PLATFORM, *feature->platforms()->begin());

  platforms->Clear();
  platforms->AppendString("win");
  feature->Parse(value.get());
  EXPECT_FALSE(feature->platforms()->empty());
  EXPECT_EQ(Feature::WIN_PLATFORM, *feature->platforms()->begin());

  platforms->Clear();
  platforms->AppendString("win");
  platforms->AppendString("chromeos");
  feature->Parse(value.get());
  std::vector<Feature::Platform> expected_platforms;
  expected_platforms.push_back(Feature::CHROMEOS_PLATFORM);
  expected_platforms.push_back(Feature::WIN_PLATFORM);

  EXPECT_FALSE(feature->platforms()->empty());
  EXPECT_EQ(expected_platforms, *feature->platforms());
}

TEST_F(SimpleFeatureTest, ParseManifestVersion) {
  scoped_ptr<base::DictionaryValue> value(new base::DictionaryValue());
  value->SetInteger("min_manifest_version", 1);
  value->SetInteger("max_manifest_version", 5);
  scoped_ptr<SimpleFeature> feature(new SimpleFeature());
  feature->Parse(value.get());
  EXPECT_EQ(1, feature->min_manifest_version());
  EXPECT_EQ(5, feature->max_manifest_version());
}

TEST_F(SimpleFeatureTest, Inheritance) {
  SimpleFeature feature;
  feature.whitelist()->push_back("foo");
  feature.extension_types()->push_back(Manifest::TYPE_THEME);
  feature.contexts()->push_back(Feature::BLESSED_EXTENSION_CONTEXT);
  feature.set_location(SimpleFeature::COMPONENT_LOCATION);
  feature.platforms()->push_back(Feature::CHROMEOS_PLATFORM);
  feature.set_min_manifest_version(1);
  feature.set_max_manifest_version(2);

  // Test additive parsing. Parsing an empty dictionary should result in no
  // changes to a SimpleFeature.
  base::DictionaryValue definition;
  feature.Parse(&definition);
  EXPECT_EQ(1u, feature.whitelist()->size());
  EXPECT_EQ(1u, feature.extension_types()->size());
  EXPECT_EQ(1u, feature.contexts()->size());
  EXPECT_EQ(1, STLCount(*(feature.whitelist()), "foo"));
  EXPECT_EQ(SimpleFeature::COMPONENT_LOCATION, feature.location());
  EXPECT_EQ(1u, feature.platforms()->size());
  EXPECT_EQ(1, STLCount(*(feature.platforms()), Feature::CHROMEOS_PLATFORM));
  EXPECT_EQ(1, feature.min_manifest_version());
  EXPECT_EQ(2, feature.max_manifest_version());

  base::ListValue* whitelist = new base::ListValue();
  base::ListValue* extension_types = new base::ListValue();
  base::ListValue* contexts = new base::ListValue();
  whitelist->Append(new base::StringValue("bar"));
  extension_types->Append(new base::StringValue("extension"));
  contexts->Append(new base::StringValue("unblessed_extension"));
  definition.Set("whitelist", whitelist);
  definition.Set("extension_types", extension_types);
  definition.Set("contexts", contexts);
  // Can't test location or platform because we only have one value so far.
  definition.Set("min_manifest_version", new base::FundamentalValue(2));
  definition.Set("max_manifest_version", new base::FundamentalValue(3));

  feature.Parse(&definition);
  EXPECT_EQ(1u, feature.whitelist()->size());
  EXPECT_EQ(1u, feature.extension_types()->size());
  EXPECT_EQ(1u, feature.contexts()->size());
  EXPECT_EQ(1, STLCount(*(feature.whitelist()), "bar"));
  EXPECT_EQ(1,
            STLCount(*(feature.extension_types()), Manifest::TYPE_EXTENSION));
  EXPECT_EQ(1,
            STLCount(
                *(feature.contexts()), Feature::UNBLESSED_EXTENSION_CONTEXT));
  EXPECT_EQ(2, feature.min_manifest_version());
  EXPECT_EQ(3, feature.max_manifest_version());
}

TEST_F(SimpleFeatureTest, CommandLineSwitch) {
  SimpleFeature feature;
  feature.set_command_line_switch("laser-beams");
  {
    EXPECT_EQ(Feature::MISSING_COMMAND_LINE_SWITCH,
              feature.IsAvailableToEnvironment().result());
  }
  {
    ScopedCommandLineSwitch scoped_switch("laser-beams");
    EXPECT_EQ(Feature::MISSING_COMMAND_LINE_SWITCH,
              feature.IsAvailableToEnvironment().result());
  }
  {
    ScopedCommandLineSwitch scoped_switch("enable-laser-beams");
    EXPECT_EQ(Feature::IS_AVAILABLE,
              feature.IsAvailableToEnvironment().result());
  }
  {
    ScopedCommandLineSwitch scoped_switch("disable-laser-beams");
    EXPECT_EQ(Feature::MISSING_COMMAND_LINE_SWITCH,
              feature.IsAvailableToEnvironment().result());
  }
  {
    ScopedCommandLineSwitch scoped_switch("laser-beams=1");
    EXPECT_EQ(Feature::IS_AVAILABLE,
              feature.IsAvailableToEnvironment().result());
  }
  {
    ScopedCommandLineSwitch scoped_switch("laser-beams=0");
    EXPECT_EQ(Feature::MISSING_COMMAND_LINE_SWITCH,
              feature.IsAvailableToEnvironment().result());
  }
}

TEST_F(SimpleFeatureTest, IsIdInArray) {
  EXPECT_FALSE(SimpleFeature::IsIdInArray("", {}, 0));
  EXPECT_FALSE(SimpleFeature::IsIdInArray(
      "bbbbccccdddddddddeeeeeeffffgghhh", {}, 0));

  const char* const kIdArray[] = {
    "bbbbccccdddddddddeeeeeeffffgghhh",
    // aaaabbbbccccddddeeeeffffgggghhhh
    "9A0417016F345C934A1A88F55CA17C05014EEEBA"
  };
  EXPECT_FALSE(SimpleFeature::IsIdInArray("", kIdArray, arraysize(kIdArray)));
  EXPECT_FALSE(SimpleFeature::IsIdInArray(
      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", kIdArray, arraysize(kIdArray)));
  EXPECT_TRUE(SimpleFeature::IsIdInArray(
      "bbbbccccdddddddddeeeeeeffffgghhh", kIdArray, arraysize(kIdArray)));
  EXPECT_TRUE(SimpleFeature::IsIdInArray(
      "aaaabbbbccccddddeeeeffffgggghhhh", kIdArray, arraysize(kIdArray)));
}

}  // namespace extensions