diff --git a/test/app_command_test.rb b/test/app_command_test.rb
new file mode 100644
index 00000000..ff71b60e
--- /dev/null
+++ b/test/app_command_test.rb
@@ -0,0 +1,18 @@
+require "test_helper"
+require "mrsk/configuration"
+require "mrsk/commands"
+
+ENV["VERSION"] = "123"
+ENV["RAILS_MASTER_KEY"] = "456"
+
+class AppCommandTest < ActiveSupport::TestCase
+  setup do
+    @config = { service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" } }
+    @app = Mrsk::Commands::App.new Mrsk::Configuration.new(@config)
+  end
+
+  test "run" do
+    assert_equal \
+      [:docker, :run, "-d", "--restart unless-stopped", "--name", "app-123", "-e", "RAILS_MASTER_KEY=456", "--label", "service=app", "--label", "traefik.http.routers.app.rule='PathPrefix(`/`)'", "--label", "traefik.http.services.app.loadbalancer.healthcheck.path=/up", "--label", "traefik.http.services.app.loadbalancer.healthcheck.interval=1s", "--label", "traefik.http.middlewares.app.retry.attempts=3", "--label", "traefik.http.middlewares.app.retry.initialinterval=500ms", "dhh/app:123"], @app.run
+  end
+end