test(integration): verify compatibility with form8ion expectations

Author: travi

test/integration/features/form8ion.feature

@@ -0,0 +1,6 @@
+Feature: mocha as form8ion plugin
+
+  Scenario: plugin conventions
+    When the project is scaffolded
+    Then the public interface is compatible with the plugin schema
+    And the output produced by the scaffolder is detectable by the predicate

test/integration/features/step_definitions/form8ion-steps.js

@@ -0,0 +1,15 @@
+import {validateOptions, optionsSchemas} from '@form8ion/core';
+
+import assert from 'node:assert';
+import {Then} from '@cucumber/cucumber';
+
+// eslint-disable-next-line import/no-extraneous-dependencies,import/no-unresolved
+import * as plugin from '@form8ion/mocha-scaffolder';
+
+Then('the public interface is compatible with the plugin schema', async function () {
+  validateOptions(optionsSchemas.form8ionPlugin, plugin);
+});
+
+Then('the output produced by the scaffolder is detectable by the predicate', async function () {
+  assert.equal(await plugin.test({projectRoot: this.projectRoot}), true);
+});