feat: remove old app configs

See #577

tests/integration/app_remove.bats

@@ -124,6 +124,33 @@ teardown(){
   assert_output --partial 'removed'
 }
 
+# bats test_tags=slow
+@test "detect no configs to remove" {
+  _deploy_app
+  _undeploy_app
+
+  run $ABRA app rm "$TEST_APP_DOMAIN" --no-input
+  assert_success
+  assert_output --partial 'no configs to remove'
+}
+
+# bats test_tags=slow
+@test "remove old app configs" {
+  _deploy_app
+  _undeploy_app
+
+  sanitisedDomainName="${TEST_APP_DOMAIN//./_}"
+  run docker config create "${sanitisedDomainName}_test_conf_v99" "$ABRA_DIR/recipes/abra-test-recipe/abra.sh"
+  assert_success
+
+  assert bash -c "docker config ls | grep -q test_conf_v99"
+
+  run $ABRA app rm "$TEST_APP_DOMAIN" --no-input
+  assert_success
+
+  refute bash -c "docker config ls | grep -q test_conf_v99"
+}
+
 @test "remove .env file" {
   assert_exists "$ABRA_DIR/servers/$TEST_SERVER/$TEST_APP_DOMAIN.env"