#34 - Introduce unit tests (#35)

#34 - Introduce unit tests
- Implemented unit tests and mock logic.
- Rework of exit calls and exception throwing to use core.setFailed().
- Fix failing usage in yml file.
- Fixed bug in PR before 'since' decision logic.

README.md

@@ -58,6 +58,18 @@ npm run build
 
 Then, commit action.yml and dist/index.js to your repository.
 
+### Run unit test
+First install [jest](https://jestjs.io/) testing framework.
+```
+npm install --save-dev jest
+npm install @actions/core
+npm install @actions/github
+```
+Launch unit tests.
+```
+npm test
+```
+
 ## Features
 ### Release Notes Extraction Process
 

__tests__/data/rls_notes_empty_with_all_chapters.md

@@ -0,0 +1,29 @@
+### Breaking Changes 💥
+No entries detected.
+
+### New Features 🎉
+No entries detected.
+
+### Bugfixes 🛠
+No entries detected.
+
+### Closed Issues without Pull Request ⚠️
+All closed issues linked to a Pull Request.
+
+### Closed Issues without User Defined Labels ⚠️
+All closed issues contain at least one of user defined labels.
+
+### Closed Issues without Release Notes ⚠️
+All closed issues have release notes.
+
+### Merged PRs without Linked Issue ⚠️
+All merged PRs are linked to issues.
+
+### Merged PRs Linked to Open Issue ⚠️
+All merged PRs are linked to Closed issues.
+
+### Closed PRs without Linked Issue ⚠️
+All closed PRs are linked to issues.
+
+#### Full Changelog
+https://github.com/owner/repo/commits/v0.1.1

__tests__/data/rls_notes_empty_with_hidden_empty_chapters.md

@@ -0,0 +1,2 @@
+#### Full Changelog
+https://github.com/owner/repo/commits/v0.1.1

__tests__/data/rls_notes_empty_with_hidden_warning_chapters.md

@@ -0,0 +1,11 @@
+### Breaking Changes 💥
+No entries detected.
+
+### New Features 🎉
+No entries detected.
+
+### Bugfixes 🛠
+No entries detected.
+
+#### Full Changelog
+https://github.com/owner/repo/commits/v0.1.1

__tests__/data/rls_notes_empty_with_no_custom_chapters.md

@@ -0,0 +1,20 @@
+### Closed Issues without Pull Request ⚠️
+All closed issues linked to a Pull Request.
+
+### Closed Issues without User Defined Labels ⚠️
+All closed issues contain at least one of user defined labels.
+
+### Closed Issues without Release Notes ⚠️
+All closed issues have release notes.
+
+### Merged PRs without Linked Issue ⚠️
+All merged PRs are linked to issues.
+
+### Merged PRs Linked to Open Issue ⚠️
+All merged PRs are linked to Closed issues.
+
+### Closed PRs without Linked Issue ⚠️
+All closed PRs are linked to issues.
+
+#### Full Changelog
+https://github.com/owner/repo/commits/v0.1.1

__tests__/data/rls_notes_fully_populated_custom_skip_label.md

@@ -0,0 +1,54 @@
+### Breaking Changes 💥
+- #8 _Issue title 8 - with co-author|private mail_ implemented by @johnDoe, Jane Doe in [#8](link-to-pr-8)
+  - note about change in Issue 8
+- #7 _Issue title 7 - with co-author|public mail_ implemented by @janeDoe, @johnDoe in [#7](link-to-pr-7)
+  - note about change in Issue 7
+
+
+### New Features 🎉
+- #6 _Issue title 6 - not assigned|no PR_ implemented by "Missing Assignee or Contributor"
+  - note about change in Issue 6
+- #4 _Issue title 4 - assigned|one PR_ implemented by @johnDoe in [#4](link-to-pr-4)
+  - note about change in Issue 4
+- #2 _Issue title 2_ implemented by @johnDoe in [#2](link-to-pr-2)
+  - note about change in Issue 2
+
+
+### Bugfixes 🛠
+- #1 _Issue title 1_ implemented by @janeDoe in [#1](link-to-pr-1)
+  - note about change in Issue 1
+
+
+### Closed Issues without Pull Request ⚠️
+- #10 _Issue title 10 - skip label_ implemented by @janeDoe
+- #6 _Issue title 6 - not assigned|no PR_ implemented by "Missing Assignee or Contributor"
+  - note about change in Issue 6
+
+
+### Closed Issues without User Defined Labels ⚠️
+- #10 _Issue title 10 - skip label_ implemented by @janeDoe
+- #9 _Issue title 9 - no user defined label_ implemented by @janeDoe in [#9](link-to-pr-9)
+  - note about change in Issue 9
+- #3 _Issue title 3 - no release note comment|typo label_ implemented by @janeDoe in [#3](link-to-pr-3)
+
+
+### Closed Issues without Release Notes ⚠️
+- #10 _Issue title 10 - skip label_ implemented by @janeDoe
+- #3 _Issue title 3 - no release note comment|typo label_ implemented by @janeDoe in [#3](link-to-pr-3)
+
+
+### Merged PRs without Linked Issue ⚠️
+#1004 _Pull Request 4 - no linked issue - merged_
+#1006 _Pull Request 6 - skip label_
+
+
+### Merged PRs Linked to Open Issue ⚠️
+#1003 _Pull Request 3 - linked to open issue_
+
+
+### Closed PRs without Linked Issue ⚠️
+#1002 _Pull Request 2 - no linked issue - closed_
+
+
+#### Full Changelog
+https://github.com/owner/repo/compare/v0.1.0...v0.1.1

__tests__/data/rls_notes_fully_populated_first_release.md

@@ -0,0 +1,53 @@
+### Breaking Changes 💥
+- #8 _Issue title 8 - with co-author|private mail_ implemented by @johnDoe, Jane Doe in [#8](link-to-pr-8)
+  - note about change in Issue 8
+- #7 _Issue title 7 - with co-author|public mail_ implemented by @janeDoe, @johnDoe in [#7](link-to-pr-7)
+  - note about change in Issue 7
+
+
+### New Features 🎉
+- #6 _Issue title 6 - not assigned|no PR_ implemented by "Missing Assignee or Contributor"
+  - note about change in Issue 6
+- #5 _Issue title 5 - not assigned|three PRs_ implemented by "Missing Assignee or Contributor" in [#5](link-to-pr-5), [#15](link-to-pr-15), [#16](link-to-pr-16)
+  - note about change in Issue 5
+- #4 _Issue title 4 - assigned|one PR_ implemented by @johnDoe in [#4](link-to-pr-4)
+  - note about change in Issue 4
+- #2 _Issue title 2_ implemented by @johnDoe in [#2](link-to-pr-2)
+  - note about change in Issue 2
+
+
+### Bugfixes 🛠
+- #1 _Issue title 1_ implemented by @janeDoe in [#1](link-to-pr-1)
+  - note about change in Issue 1
+
+
+### Closed Issues without Pull Request ⚠️
+- #6 _Issue title 6 - not assigned|no PR_ implemented by "Missing Assignee or Contributor"
+  - note about change in Issue 6
+
+
+### Closed Issues without User Defined Labels ⚠️
+- #9 _Issue title 9 - no user defined label_ implemented by @janeDoe in [#9](link-to-pr-9)
+  - note about change in Issue 9
+- #3 _Issue title 3 - no release note comment|typo label_ implemented by @janeDoe in [#3](link-to-pr-3)
+
+
+### Closed Issues without Release Notes ⚠️
+- #3 _Issue title 3 - no release note comment|typo label_ implemented by @janeDoe in [#3](link-to-pr-3)
+
+
+### Merged PRs without Linked Issue ⚠️
+#1001 _Pull Request 1_
+#1004 _Pull Request 4 - no linked issue - merged_
+
+
+### Merged PRs Linked to Open Issue ⚠️
+#1003 _Pull Request 3 - linked to open issue_
+
+
+### Closed PRs without Linked Issue ⚠️
+#1002 _Pull Request 2 - no linked issue - closed_
+
+
+#### Full Changelog
+https://github.com/owner/repo-no-rls/commits/v0.1.1

__tests__/data/rls_notes_fully_populated_hide_warning_chapters.md

@@ -0,0 +1,25 @@
+### Breaking Changes 💥
+- #8 _Issue title 8 - with co-author|private mail_ implemented by @johnDoe, Jane Doe in [#8](link-to-pr-8)
+  - note about change in Issue 8
+- #7 _Issue title 7 - with co-author|public mail_ implemented by @janeDoe, @johnDoe in [#7](link-to-pr-7)
+  - note about change in Issue 7
+
+
+### New Features 🎉
+- #6 _Issue title 6 - not assigned|no PR_ implemented by "Missing Assignee or Contributor"
+  - note about change in Issue 6
+- #5 _Issue title 5 - not assigned|three PRs_ implemented by "Missing Assignee or Contributor" in [#5](link-to-pr-5), [#15](link-to-pr-15), [#16](link-to-pr-16)
+  - note about change in Issue 5
+- #4 _Issue title 4 - assigned|one PR_ implemented by @johnDoe in [#4](link-to-pr-4)
+  - note about change in Issue 4
+- #2 _Issue title 2_ implemented by @johnDoe in [#2](link-to-pr-2)
+  - note about change in Issue 2
+
+
+### Bugfixes 🛠
+- #1 _Issue title 1_ implemented by @janeDoe in [#1](link-to-pr-1)
+  - note about change in Issue 1
+
+
+#### Full Changelog
+https://github.com/owner/repo/compare/v0.1.0...v0.1.1

__tests__/data/rls_notes_fully_populated_in_default.md

@@ -0,0 +1,53 @@
+### Breaking Changes 💥
+- #8 _Issue title 8 - with co-author|private mail_ implemented by @johnDoe, Jane Doe in [#8](link-to-pr-8)
+  - note about change in Issue 8
+- #7 _Issue title 7 - with co-author|public mail_ implemented by @janeDoe, @johnDoe in [#7](link-to-pr-7)
+  - note about change in Issue 7
+
+
+### New Features 🎉
+- #6 _Issue title 6 - not assigned|no PR_ implemented by "Missing Assignee or Contributor"
+  - note about change in Issue 6
+- #5 _Issue title 5 - not assigned|three PRs_ implemented by "Missing Assignee or Contributor" in [#5](link-to-pr-5), [#15](link-to-pr-15), [#16](link-to-pr-16)
+  - note about change in Issue 5
+- #4 _Issue title 4 - assigned|one PR_ implemented by @johnDoe in [#4](link-to-pr-4)
+  - note about change in Issue 4
+- #2 _Issue title 2_ implemented by @johnDoe in [#2](link-to-pr-2)
+  - note about change in Issue 2
+
+
+### Bugfixes 🛠
+- #1 _Issue title 1_ implemented by @janeDoe in [#1](link-to-pr-1)
+  - note about change in Issue 1
+
+
+### Closed Issues without Pull Request ⚠️
+- #6 _Issue title 6 - not assigned|no PR_ implemented by "Missing Assignee or Contributor"
+  - note about change in Issue 6
+
+
+### Closed Issues without User Defined Labels ⚠️
+- #9 _Issue title 9 - no user defined label_ implemented by @janeDoe in [#9](link-to-pr-9)
+  - note about change in Issue 9
+- #3 _Issue title 3 - no release note comment|typo label_ implemented by @janeDoe in [#3](link-to-pr-3)
+
+
+### Closed Issues without Release Notes ⚠️
+- #3 _Issue title 3 - no release note comment|typo label_ implemented by @janeDoe in [#3](link-to-pr-3)
+
+
+### Merged PRs without Linked Issue ⚠️
+#1001 _Pull Request 1_
+#1004 _Pull Request 4 - no linked issue - merged_
+
+
+### Merged PRs Linked to Open Issue ⚠️
+#1003 _Pull Request 3 - linked to open issue_
+
+
+### Closed PRs without Linked Issue ⚠️
+#1002 _Pull Request 2 - no linked issue - closed_
+
+
+#### Full Changelog
+https://github.com/owner/repo/compare/v0.1.0...v0.1.1

__tests__/data/rls_notes_fully_populated_no_custom_chapters.md

@@ -0,0 +1,44 @@
+### Closed Issues without Pull Request ⚠️
+- #6 _Issue title 6 - not assigned|no PR_ implemented by "Missing Assignee or Contributor"
+  - note about change in Issue 6
+
+
+### Closed Issues without User Defined Labels ⚠️
+- #9 _Issue title 9 - no user defined label_ implemented by @janeDoe in [#9](link-to-pr-9)
+  - note about change in Issue 9
+- #8 _Issue title 8 - with co-author|private mail_ implemented by @johnDoe, Jane Doe in [#8](link-to-pr-8)
+  - note about change in Issue 8
+- #7 _Issue title 7 - with co-author|public mail_ implemented by @janeDoe, @johnDoe in [#7](link-to-pr-7)
+  - note about change in Issue 7
+- #6 _Issue title 6 - not assigned|no PR_ implemented by "Missing Assignee or Contributor"
+  - note about change in Issue 6
+- #5 _Issue title 5 - not assigned|three PRs_ implemented by "Missing Assignee or Contributor" in [#5](link-to-pr-5), [#15](link-to-pr-15), [#16](link-to-pr-16)
+  - note about change in Issue 5
+- #4 _Issue title 4 - assigned|one PR_ implemented by @johnDoe in [#4](link-to-pr-4)
+  - note about change in Issue 4
+- #3 _Issue title 3 - no release note comment|typo label_ implemented by @janeDoe in [#3](link-to-pr-3)
+- #2 _Issue title 2_ implemented by @johnDoe in [#2](link-to-pr-2)
+  - note about change in Issue 2
+- #1 _Issue title 1_ implemented by @janeDoe in [#1](link-to-pr-1)
+  - note about change in Issue 1
+
+
+### Closed Issues without Release Notes ⚠️
+- #3 _Issue title 3 - no release note comment|typo label_ implemented by @janeDoe in [#3](link-to-pr-3)
+
+
+### Merged PRs without Linked Issue ⚠️
+#1001 _Pull Request 1_
+#1004 _Pull Request 4 - no linked issue - merged_
+
+
+### Merged PRs Linked to Open Issue ⚠️
+#1003 _Pull Request 3 - linked to open issue_
+
+
+### Closed PRs without Linked Issue ⚠️
+#1002 _Pull Request 2 - no linked issue - closed_
+
+
+#### Full Changelog
+https://github.com/owner/repo/compare/v0.1.0...v0.1.1

__tests__/data/rls_notes_fully_populated_second_release.md

@@ -0,0 +1,29 @@
+### Breaking Changes 💥
+No entries detected.
+
+### New Features 🎉
+No entries detected.
+
+### Bugfixes 🛠
+No entries detected.
+
+### Closed Issues without Pull Request ⚠️
+All closed issues linked to a Pull Request.
+
+### Closed Issues without User Defined Labels ⚠️
+All closed issues contain at least one of user defined labels.
+
+### Closed Issues without Release Notes ⚠️
+All closed issues have release notes.
+
+### Merged PRs without Linked Issue ⚠️
+All merged PRs are linked to issues.
+
+### Merged PRs Linked to Open Issue ⚠️
+All merged PRs are linked to Closed issues.
+
+### Closed PRs without Linked Issue ⚠️
+All closed PRs are linked to issues.
+
+#### Full Changelog
+https://github.com/owner/repo-2nd-rls/compare/v0.1.0...v0.1.1