diff --git a/test/support/configurable_daemon_settings.rb b/test/support/configurable_daemon_settings.rb
new file mode 100644
index 0000000..a95bc99
--- /dev/null
+++ b/test/support/configurable_daemon_settings.rb
@@ -0,0 +1,26 @@
+module ConfigurableDaemonSettings
+  extend ActiveSupport::Concern
+
+  included do
+    test "show form" do
+      visit(__send__("daemon_setting_#{@type}_path"))
+      assert do
+        page.has_css?("input[name=\"setting[#{@form_name}]\"]")
+      end
+    end
+
+    test "Update config" do
+      assert do
+        !@daemon.agent.config.include?(@form_value)
+      end
+      visit(__send__("daemon_setting_#{@type}_path"))
+      within("form") do
+        fill_in(@form_name.capitalize, with: @form_value)
+      end
+      click_button(I18n.t("fluentd.common.finish"))
+      assert do
+        @daemon.agent.config.include?(@form_value)
+      end
+    end
+  end
+end
diff --git a/test/system/fluentd/setting/in_forward_test.rb b/test/system/fluentd/setting/in_forward_test.rb
new file mode 100644
index 0000000..e46692b
--- /dev/null
+++ b/test/system/fluentd/setting/in_forward_test.rb
@@ -0,0 +1,13 @@
+require "application_system_test_case"
+
+class InForwardTest < ApplicationSystemTestCase
+  include ConfigurableDaemonSettings
+
+  setup do
+    login_with(FactoryBot.build(:user))
+    @type = "in_forward"
+    @form_name = "port"
+    @form_value = "12345"
+    @daemon = stub_daemon
+  end
+end
diff --git a/test/system/fluentd/setting/in_http_test.rb b/test/system/fluentd/setting/in_http_test.rb
new file mode 100644
index 0000000..ed81bbe
--- /dev/null
+++ b/test/system/fluentd/setting/in_http_test.rb
@@ -0,0 +1,13 @@
+require "application_system_test_case"
+
+class InHttpTest < ApplicationSystemTestCase
+  include ConfigurableDaemonSettings
+
+  setup do
+    login_with(FactoryBot.build(:user))
+    @type = "in_http"
+    @form_name = "port"
+    @form_value = "12345"
+    @daemon = stub_daemon
+  end
+end
diff --git a/test/system/fluentd/setting/in_monitor_agent.rb b/test/system/fluentd/setting/in_monitor_agent.rb
new file mode 100644
index 0000000..cd92c00
--- /dev/null
+++ b/test/system/fluentd/setting/in_monitor_agent.rb
@@ -0,0 +1,13 @@
+require "application_system_test_case"
+
+class InMonitorAgentTest < ApplicationSystemTestCase
+  include ConfigurableDaemonSettings
+
+  setup do
+    login_with(FactoryBot.build(:user))
+    @type = "in_monitor_agent"
+    @form_name = "port"
+    @form_value = "12345"
+    @daemon = stub_daemon
+  end
+end
diff --git a/test/system/fluentd/setting/out_elasticsearch_test.rb b/test/system/fluentd/setting/out_elasticsearch_test.rb
new file mode 100644
index 0000000..9af32fc
--- /dev/null
+++ b/test/system/fluentd/setting/out_elasticsearch_test.rb
@@ -0,0 +1,32 @@
+require "application_system_test_case"
+
+class OutElasticsearchTest < ApplicationSystemTestCase
+  setup do
+    login_with(FactoryBot.build(:user))
+    @daemon = stub_daemon
+    @pattern = "test.out_forward.#{Time.now.to_i}.*"
+  end
+
+  test "show form" do
+    visit(daemon_setting_out_elasticsearch_path)
+    assert do
+      page.has_css?('input[name="setting[pattern]"]')
+    end
+  end
+
+  test "Update config" do
+    assert do
+      !@daemon.agent.config.include?(@pattern)
+    end
+    visit(daemon_setting_out_elasticsearch_path)
+    within("form") do
+      fill_in("Pattern", with: @pattern)
+      fill_in("Index name", with: "index")
+      fill_in("Type name", with: "type_name")
+    end
+    click_button(I18n.t("fluentd.common.finish"))
+    assert do
+      @daemon.agent.config.include?(@pattern)
+    end
+  end
+end
diff --git a/test/system/fluentd/setting/out_forward_test.rb b/test/system/fluentd/setting/out_forward_test.rb
new file mode 100644
index 0000000..0a178d8
--- /dev/null
+++ b/test/system/fluentd/setting/out_forward_test.rb
@@ -0,0 +1,41 @@
+require "application_system_test_case"
+require "fluent/plugin/buf_file"
+
+class OutForwardTest < ApplicationSystemTestCase
+  setup do
+    login_with(FactoryBot.build(:user))
+    @daemon = stub_daemon
+    @pattern = "test.out_forward.#{Time.now.to_i}.*"
+  end
+
+  test "show form" do
+    visit(daemon_setting_out_forward_path)
+    assert do
+      page.has_css?('input[name="setting[pattern]"]')
+    end
+  end
+
+  test "appendable server setting" do
+    visit(daemon_setting_out_forward_path)
+    assert_equal(1, all(".js-nested-column .js-append", visible: false).size)
+    all('.js-append').first.click
+    assert_equal(2, all(".js-nested-column .js-append", visible: false).size)
+  end
+
+  test "update config" do
+    assert do
+      !@daemon.agent.config.include?(@pattern)
+    end
+    visit(daemon_setting_out_forward_path)
+    within("form") do
+      fill_in("Pattern", with: @pattern)
+      fill_in("setting_server_0__host", with: "localhost")
+      fill_in("setting_server_0__port", with: "9999")
+      fill_in("Path", with: "/tmp/foo")
+    end
+    click_button(I18n.t("fluentd.common.finish"))
+    assert do
+      @daemon.agent.config.include?(@pattern)
+    end
+  end
+end
diff --git a/test/system/fluentd/setting/out_stdout_test.rb b/test/system/fluentd/setting/out_stdout_test.rb
new file mode 100644
index 0000000..631b100
--- /dev/null
+++ b/test/system/fluentd/setting/out_stdout_test.rb
@@ -0,0 +1,15 @@
+require "application_system_test_case"
+
+require "fluent/plugin/buf_file"
+
+class OutStdoutTest < ApplicationSystemTestCase
+  include ConfigurableDaemonSettings
+
+  setup do
+    login_with(FactoryBot.build(:user))
+    @type = "out_stdout"
+    @form_name = "pattern"
+    @form_value = "stdout.**"
+    @daemon = stub_daemon
+  end
+end
diff --git a/test/system/fluentd/setting/out_tdlog_test.rb b/test/system/fluentd/setting/out_tdlog_test.rb
new file mode 100644
index 0000000..53ba23d
--- /dev/null
+++ b/test/system/fluentd/setting/out_tdlog_test.rb
@@ -0,0 +1,15 @@
+require "application_system_test_case"
+
+require "fluent/plugin/buf_file"
+
+class OutTdlogTest < ApplicationSystemTestCase
+  include ConfigurableDaemonSettings
+
+  setup do
+    login_with(FactoryBot.build(:user))
+    @type = "out_tdlog"
+    @form_name = "apikey"
+    @form_value = "dummydummy"
+    @daemon = stub_daemon
+  end
+end