- introduce test cases for transform.test.ts

- add test case to highlight label extractor feature FIX https://github.com/mikepenz/release-changelog-builder-action/issues/450
  - test cases can easily be run via `npm test -- transform.test.ts`
- slightly simplify releaseNotes.ts and transform.ts

__tests__/transform.test.ts

@@ -0,0 +1,136 @@
+import {buildChangelog} from '../src/transform'
+import { PullRequestInfo } from '../src/pullRequests'
+import moment from 'moment'
+import { DefaultConfiguration } from '../src/configuration';
+
+jest.setTimeout(180000)
+
+let configuration = DefaultConfiguration
+  configuration.categories = [
+    {
+      "title": "## 🚀 Features",
+      "labels": ["[Feature]"]
+    },
+    {
+      "title": "## 🐛 Fixes",
+      "labels": ["[Bug]", "[Issue]"]
+    },
+    {
+      "title": "## 🧪 Tests",
+      "labels": ["[Test]"]
+    }
+  ]
+
+  let mergedPullRequests: PullRequestInfo[] = []
+  mergedPullRequests.push({
+    number: 1,
+    title: "[Feature][AB-1234] - this is a PR 1 title message",
+    htmlURL: "",
+    baseBranch: "",
+    mergedAt: moment(),
+    mergeCommitSha: "sha1",
+    author: "Mike",
+    repoName: "test-repo",
+    labels: new Set<string>(),
+    milestone: "",
+    body: "no magic body for this matter",
+    assignees: [],
+    requestedReviewers: []
+  }, {
+    number: 2,
+    title: "[Issue][AB-4321] - this is a PR 2 title message",
+    htmlURL: "",
+    baseBranch: "",
+    mergedAt: moment(),
+    mergeCommitSha: "sha1",
+    author: "Mike",
+    repoName: "test-repo",
+    labels: new Set<string>(),
+    milestone: "",
+    body: "no magic body for this matter",
+    assignees: [],
+    requestedReviewers: []
+  }, {
+    number: 3,
+    title: "[Issue][Feature][AB-1234321] - this is a PR 3 title message",
+    htmlURL: "",
+    baseBranch: "",
+    mergedAt: moment(),
+    mergeCommitSha: "sha1",
+    author: "Mike",
+    repoName: "test-repo",
+    labels: new Set<string>(),
+    milestone: "",
+    body: "no magic body for this matter",
+    assignees: [],
+    requestedReviewers: []
+  }, {
+    number: 4,
+    title: "[AB-404] - not found label",
+    htmlURL: "",
+    baseBranch: "",
+    mergedAt: moment(),
+    mergeCommitSha: "sha1",
+    author: "Mike",
+    repoName: "test-repo",
+    labels: new Set<string>(),
+    milestone: "",
+    body: "no magic body for this matter",
+    assignees: [],
+    requestedReviewers: []
+  })
+
+it('Extract label from title, combined regex', async () => {
+  configuration.label_extractor = [
+    {
+      "pattern": ".*(\\[Feature\\]|\\[Issue\\]).*",
+      "target": "$1",
+      "on_property": "title"
+    }
+  ]
+
+  const resultChangelog = buildChangelog(
+    mergedPullRequests,
+    {
+      owner: "mikepenz",
+      repo: "test-repo",
+      fromTag: "1.0.0",
+      toTag: "2.0.0",
+      failOnError: false,
+      commitMode: false,
+      configuration: configuration
+    } 
+  )
+
+  expect(resultChangelog).toStrictEqual(`## 🚀 Features\n\n- [Feature][AB-1234] - this is a PR 1 title message\n   - PR: #1\n- [Issue][Feature][AB-1234321] - this is a PR 3 title message\n   - PR: #3\n\n## 🐛 Fixes\n\n- [Issue][AB-4321] - this is a PR 2 title message\n   - PR: #2\n\n`)
+})
+
+it('Extract label from title, split regex', async () => {
+  configuration.label_extractor = [
+    {
+      "pattern": ".*(\\[Feature\\]).*",
+      "target": "$1",
+      "on_property": "title"
+    },
+    {
+      "pattern": ".*(\\[Issue\\]).*",
+      "target": "$1",
+      "on_property": "title"
+    }
+  ]
+
+  const resultChangelog = buildChangelog(
+    mergedPullRequests,
+    {
+      owner: "mikepenz",
+      repo: "test-repo",
+      fromTag: "1.0.0",
+      toTag: "2.0.0",
+      failOnError: false,
+      commitMode: false,
+      configuration: configuration
+    } 
+  )
+
+  expect(resultChangelog).toStrictEqual(`## 🚀 Features\n\n- [Feature][AB-1234] - this is a PR 1 title message\n   - PR: #1\n- [Issue][Feature][AB-1234321] - this is a PR 3 title message\n   - PR: #3\n\n## 🐛 Fixes\n\n- [Issue][AB-4321] - this is a PR 2 title message\n   - PR: #2\n- [Issue][Feature][AB-1234321] - this is a PR 3 title message\n   - PR: #3\n\n`)
+})

src/releaseNotes.ts

@@ -20,8 +20,6 @@ export class ReleaseNotes {
   constructor(private octokit: Octokit, private options: ReleaseNotesOptions) {}
 
   async pull(): Promise<string | null> {
-    const {configuration} = this.options
-
     let mergedPullRequests: PullRequestInfo[]
     if (!this.options.commitMode) {
       core.startGroup(`🚀 Load pull requests`)
@@ -40,11 +38,7 @@ export class ReleaseNotes {
     }
 
     core.startGroup('📦 Build changelog')
-    const resultChangelog = buildChangelog(
-      mergedPullRequests,
-      configuration,
-      this.options
-    )
+    const resultChangelog = buildChangelog(mergedPullRequests, this.options)
     core.endGroup()
     return resultChangelog
   }

src/transform.ts

@@ -1,7 +1,6 @@
 import * as core from '@actions/core'
 import {
   Category,
-  Configuration,
   DefaultConfiguration,
   Extractor,
   Transformer
@@ -11,10 +10,10 @@ import {ReleaseNotesOptions} from './releaseNotes'
 
 export function buildChangelog(
   prs: PullRequestInfo[],
-  config: Configuration,
   options: ReleaseNotesOptions
 ): string {
   // sort to target order
+  const config = options.configuration
   const sort = config.sort || DefaultConfiguration.sort
   const sortAsc = sort.toUpperCase() === 'ASC'
   prs = sortPullRequests(prs, sortAsc)