feat: StepProviderMixin()

Author: arlac77

package.json

@@ -31,16 +31,17 @@
   },
   "devDependencies": {
     "ava": "^0.24.0",
+    "babel-preset-env": "^1.6.1",
     "jsdoc-babel": "^0.3.0",
     "jsdoc-to-markdown": "^3.0.2",
     "kronos-service-manager": "^3.5.10",
     "kronos-test-step": "3.1.4",
     "markdown-doctest": "^0.9.1",
     "nyc": "^11.4.0",
     "rollup": "^0.52.1",
+    "rollup-plugin-multi-entry": "^2.0.2",
     "semantic-release": "^10.0.1",
-    "xo": "^0.19.0",
-    "babel-preset-env": "^1.6.1"
+    "xo": "^0.19.0"
   },
   "contributors": [
     {

src/step-provider-mixin.js

@@ -0,0 +1,27 @@
+import { defineRegistryProperties } from 'registry-mixin';
+
+/**
+ * Provide steps.
+ */
+export function StepProviderMixin(superclass) {
+  return class extends superclass {
+    /**
+     * if config is an array entry 0 then entry 0 will be passed to super and all other entries
+     * are handed over as initial config to the config services
+     */
+    constructor(...args) {
+      super(...args);
+
+      defineRegistryProperties(this, 'stepFactory', {
+        pluralName: 'stepFactories',
+        withCreateInstance: true,
+        withEvents: true,
+        factoryType: 'new'
+      });
+    }
+
+    declareStep(config, owner) {
+      return this.createStepFactoryInstanceFromConfig(config, owner);
+    }
+  };
+}

tests/rollup.config.js

@@ -1,5 +1,7 @@
+import multiEntry from 'rollup-plugin-multi-entry';
+
 export default {
-  input: 'tests/step-test.js',
+  input: 'tests/**/*-test.js',
   output: {
     file: 'build/step-test.js',
     format: 'cjs',
@@ -12,5 +14,5 @@ export default {
     'loglevel-mixin',
     'model-attributes'
   ],
-  plugins: []
+  plugins: [multiEntry()]
 };

tests/step-provider-mixin-test.js

@@ -0,0 +1,26 @@
+import test from 'ava';
+import { Step } from '../src/step';
+import { StepProviderMixin } from '../src/step-provider-mixin';
+
+class AStep extends Step {
+  static get name() {
+    return 'a-step';
+  }
+}
+
+test('provider', async t => {
+  const provider = new StepProviderMixin(class {});
+
+  provider.registerStep(AStep);
+
+  const step = await provider.declareStep(
+    {
+      name: 's1',
+      type: 'a-step'
+    },
+    {}
+  );
+
+  t.is(step.name, 's1');
+  t.is(step.type, 'a-step');
+});