- split logic to validate and read in additional details for changelog generation into new releaseNotesBuilder

- construct main class to be as simple as possible

__tests__/releaseNotes.test.ts

@@ -1,4 +1,4 @@
-import {ReleaseNotes} from '../src/releaseNotes'
+import { ReleaseNotes } from '../src/releaseNotes'
 import { resolveConfiguration } from '../src/utils';
 import { Octokit } from '@octokit/rest';
 

__tests__/releaseNotesBuilder.test.ts

@@ -0,0 +1,41 @@
+import { resolveConfiguration } from '../src/utils';
+import { ReleaseNotesBuilder } from '../src/releaseNotesBuilder';
+
+// shows how the runner will run a javascript action with env / stdout protocol
+/*
+test('test runs', () => {
+  jest.setTimeout(180000);
+  
+  process.env['INPUT_CONFIGURATION'] = 'configuration.json'
+  const ip = path.join(__dirname, '..', 'lib', 'main.js')
+  const options: cp.ExecSyncOptions = {
+    env: process.env
+  }
+  console.log(cp.execSync(`node ${ip}`, options).toString())
+})
+*/
+it('Should match generated changelog (unspecified fromTag)', async () => {
+  jest.setTimeout(180000)
+
+  const configuration = resolveConfiguration('', 'configs/configuration.json')
+  const releaseNotesBuilder = new ReleaseNotesBuilder(
+    null,
+    '.',
+    'mikepenz',
+    'release-changelog-builder-action',
+    null,
+    'v0.0.3',
+    false,
+    false,
+    configuration
+  )
+
+  const changeLog = await releaseNotesBuilder.build()
+  console.log(changeLog)
+  expect(changeLog).toStrictEqual(`## 🧪 Tests
+
+- [CI] Specify Test Case
+   - PR: #10
+
+`)
+})