feat(ruby-version): used rbenv to install the defined ruby version

README.md

@@ -18,6 +18,14 @@ opinionated scaffolder for Ruby projects
 $ npm install @form8ion/ruby-scaffolder --save
 ```
 
+### Dependencies
+
+It is expected that [rbenv](https://github.com/rbenv/rbenv) is available for
+managing [Ruby](https://www.ruby-lang.org/en/) versions. This scaffolder will
+leverage [rbenv](https://github.com/rbenv/rbenv) to install the version of
+[Ruby](https://www.ruby-lang.org/en/) that is defined in the generated
+`.ruby-version` file.
+
 ## Contributing
 
 <!-- contribution badges -->

package.json

@@ -66,5 +66,7 @@
     "sinon": "^7.4.1",
     "travis-lint": "^1.0.0"
   },
-  "dependencies": {}
+  "dependencies": {
+    "execa": "^2.0.4"
+  }
 }

src/ruby-version-test.js

@@ -2,6 +2,7 @@ import {promises as fsPromises} from 'fs';
 import {assert} from 'chai';
 import sinon from 'sinon';
 import any from '@travi/any';
+import * as execa from '../thirdparty-wrappers/execa';
 import scaffoldRubyVersion from './ruby-version';
 
 suite('ruby-version', () => {
@@ -11,6 +12,7 @@ suite('ruby-version', () => {
     sandbox = sinon.createSandbox();
 
     sandbox.stub(fsPromises, 'writeFile');
+    sandbox.stub(execa, 'default');
   });
 
   teardown(() => sandbox.restore());
@@ -21,5 +23,6 @@ suite('ruby-version', () => {
     await scaffoldRubyVersion(projectRoot);
 
     assert.calledWith(fsPromises.writeFile, `${projectRoot}/.ruby-version`, '2.6.3');
+    assert.calledWith(execa.default, 'rbenv', ['install']);
   });
 });

src/ruby-version.js

@@ -1,5 +1,8 @@
 import {promises} from 'fs';
+import execa from '../thirdparty-wrappers/execa';
 
 export default async function (projectRoot) {
   await promises.writeFile(`${projectRoot}/.ruby-version`, '2.6.3');
+
+  await execa('rbenv', ['install']);
 }

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

@@ -3,9 +3,11 @@ import {promisify} from 'util';
 import {resolve} from 'path';
 import stubbedFs from 'mock-fs';
 // import bddStdIn from 'bdd-stdin';
+import sinon from 'sinon';
 import {assert} from 'chai';
 import any from '@travi/any';
 import {After, Before, Given, Then, When} from 'cucumber';
+import * as execa from '../../../../thirdparty-wrappers/execa';
 import {scaffold} from '../../../../src';
 
 let scaffoldResult;
@@ -23,6 +25,9 @@ Before(async function () {
       'Rakefile.rb': await readFile(resolve(__dirname, '../../../../', 'templates/Rakefile.rb'))
     }
   });
+
+  this.sinonSandbox = sinon.createSandbox();
+  this.sinonSandbox.stub(execa, 'default');
 });
 
 After(function () {

thirdparty-wrappers/execa.js

@@ -0,0 +1,3 @@
+import execa from 'execa';
+
+export default execa;