diff --git a/test/integration/setting_test.rb b/test/integration/setting_test.rb
new file mode 100644
index 0000000..3a235fc
--- /dev/null
+++ b/test/integration/setting_test.rb
@@ -0,0 +1,126 @@
+require "test_helper"
+
+class Setting < ActionDispatch::IntegrationTest
+  include ::ConfigHistories::DaemonHaveSomeConfigHistories
+  include ::ConfigHistories::DaemonHadBeenStartedOnce
+
+  setup do
+    login_with(FactoryBot.build(:user))
+    stub_daemon
+    daemon.agent.config_write("GREAT CONFIG HERE")
+
+    visit("/daemon/setting")
+  end
+
+  test "show setting" do
+    assert do
+      page.has_css?('h1', text: I18n.t('fluentd.settings.show.page_title'))
+    end
+    assert do
+      page.has_link?(I18n.t('terms.edit'))
+    end
+    assert do
+      page.has_css?('pre', text: 'GREAT CONFIG HERE')
+    end
+    assert_equal(Settings.histories_count_in_preview + 1, all('.row tr').count) # links to hisotries#show + 1 table header
+    assert do
+      page.has_link?(I18n.t('fluentd.settings.show.link_to_histories'))
+    end
+    assert do
+      page.has_text?(I18n.t('fluentd.settings.running_backup.title'))
+    end
+  end
+
+  test "go to histories#index" do
+    click_link(I18n.t('fluentd.settings.show.link_to_histories'))
+
+    assert do
+      page.has_css?('h1', text: I18n.t('fluentd.settings.histories.index.page_title'))
+    end
+  end
+
+  test "go to histories#show" do
+    all('.row tr td a').first.click
+
+    assert do
+      page.has_css?('h1', text: I18n.t('fluentd.settings.histories.show.page_title'))
+    end
+  end
+
+  test "edit setting" do
+    click_link(I18n.t('terms.edit'))
+
+    assert do
+      page.has_css?('h1', text: I18n.t('fluentd.settings.edit.page_title'))
+    end
+    assert do
+      page.has_css?('p.text-danger', text: I18n.t('terms.notice_restart_for_config_edit', brand: 'fluentd'))
+    end
+
+    fill_in('config', with: 'YET ANOTHER CONFIG')
+
+    click_button(I18n.t('terms.update'))
+
+    assert_equal('/daemon/setting', current_path)
+    assert do
+      page.has_css?('pre', text: 'YET ANOTHER CONFIG')
+    end
+  end
+
+  sub_test_case "plain config" do
+    setup do
+      any_instance_of(Fluentd::Agent::TdAgent) do |object|
+        @conf = <<-'CONFIG'
+        <source>
+          @type forward
+        </source>
+        CONFIG
+        stub(object).dryrun(anything) { true }
+        daemon.agent.config_write(@conf)
+        click_link(I18n.t('terms.edit'))
+      end
+    end
+
+    test "configtest" do
+      click_button(I18n.t('terms.configtest'))
+      assert do
+        page.has_css?('.alert-success')
+      end
+    end
+
+    test "update & restart check" do
+      click_button(I18n.t('terms.update'))
+      # CodeMirror exchange \n -> \r\n
+      assert_equal(@conf, daemon.agent.config.gsub("\r\n", "\n"))
+    end
+  end
+
+  sub_test_case "embedded config" do
+    setup do
+      any_instance_of(Fluentd::Agent::TdAgent) do |object|
+        @conf = <<-'CONFIG'
+        <source>
+          type forward
+          id "foo#{Time.now.to_s}"
+        </source>
+        CONFIG
+        stub(object).dryrun(anything) { true }
+        daemon.agent.config_write(@conf)
+        click_link(I18n.t('terms.edit'))
+      end
+    end
+
+    test "configtest" do
+      click_button(I18n.t('terms.configtest'))
+      assert do
+        page.has_css?('.alert-success')
+      end
+    end
+
+    test "update & restart check" do
+      click_button(I18n.t('terms.update'))
+      # CodeMirror exchange \n -> \r\n
+      assert_equal(@conf, daemon.agent.config.gsub("\r\n", "\n"))
+    end
+  end
+end
diff --git a/test/integration/users_test.rb b/test/integration/users_test.rb
new file mode 100644
index 0000000..b244c3f
--- /dev/null
+++ b/test/integration/users_test.rb
@@ -0,0 +1,43 @@
+require "test_helper"
+
+class UsersTest < ActionDispatch::IntegrationTest
+  test "login required" do
+    login_required(user_path)
+  end
+
+  sub_test_case "edit" do
+    setup do
+      @user = FactoryBot.build(:user)
+      login_with(@user)
+    end
+
+    teardown do
+      # reset password to the default
+      FileUtils.rm_f(User::ENCRYPTED_PASSWORD_FILE)
+    end
+
+    sub_test_case "to change password" do
+      def update_password(current_password, password, password_confirmation)
+        visit user_path
+        fill_in 'user[current_password]', with: current_password
+
+        fill_in 'user[password]', with: password
+        fill_in 'user[password_confirmation]', with: password_confirmation
+        click_button I18n.t("terms.update_password")
+      end
+
+      test "when input valid new password/confirmation" do
+        update_password(@user.password, "newpassword", "newpassword")
+        page.has_css?(".alert-success")
+        assert_equal(@user.digest("newpassword"), @user.stored_digest)
+      end
+
+      test "when input invalid new password/confirmation" do
+        original_digest = @user.stored_digest
+        update_password(@user.password, "newpassword", "invalidpassword")
+        page.has_css?(".alert-danger")
+        assert_equal(original_digest, @user.stored_digest)
+      end
+    end
+  end
+end
diff --git a/test/support/config_histories.rb b/test/support/config_histories.rb
new file mode 100644
index 0000000..cda6d9b
--- /dev/null
+++ b/test/support/config_histories.rb
@@ -0,0 +1,68 @@
+require_relative "./stub_daemon"
+
+module ConfigHistories
+  module DaemonHaveSomeConfigHistories
+    extend ActiveSupport::Concern
+    include ::StubDaemon
+
+    included do
+      def daemon
+        @daemon ||= stub_daemon
+      end
+
+      setup do
+        config_contents = <<-CONFIG.strip_heredoc
+          <source>
+            @type forward
+            port 24224
+          </source>
+        CONFIG
+        new_config = <<-CONFIG
+          <source>
+            @type http
+            port 8899
+          </source>
+        CONFIG
+
+        three_hours_ago = Time.zone.now - 3.hours
+        Timecop.freeze(three_hours_ago)
+        FileUtils.rm_rf(daemon.agent.config_backup_dir)
+
+        7.times do |i|
+          backup_time = three_hours_ago - (i+1).hours
+          FileUtils.touch(File.join(daemon.agent.config_backup_dir, "#{backup_time.strftime("%Y%m%d_%H%M%S")}.conf"))
+        end
+
+        Timecop.freeze(three_hours_ago + 1.hours)
+        daemon.agent.config_write(config_contents)
+
+        Timecop.freeze(three_hours_ago + 2.hours)
+        daemon.agent.config_write(new_config)
+
+        Timecop.freeze(three_hours_ago + 3.hours)
+      end
+
+      teardown do
+        FileUtils.rm_rf(daemon.agent.config_backup_dir)
+        Timecop.return
+      end
+    end
+  end
+
+  module DaemonHadBeenStartedOnce
+    extend ActiveSupport::Concern
+
+    included do
+      setup do
+        @backup_content = "Running backup file content"
+        File.open(daemon.agent.running_config_backup_file, "w") do |file|
+          file.write(@backup_content)
+        end
+      end
+
+      teardown do
+        FileUtils.rm_rf(daemon.agent.config_backup_dir)
+      end
+    end
+  end
+end
diff --git a/test/support/login_required.rb b/test/support/login_required.rb
new file mode 100644
index 0000000..0a598ce
--- /dev/null
+++ b/test/support/login_required.rb
@@ -0,0 +1,8 @@
+module LoginRequired
+  def login_required(url)
+    visit(url)
+    assert_equal(new_sessions_path, current_path)
+  end
+end
+
+ActionDispatch::IntegrationTest.include(LoginRequired)