Add test to confirm release-date can be anything

Author: stefanzweifel

tests/Feature/UpdateCommandTest.php

@@ -340,3 +340,24 @@
          ->expectsOutput(file_get_contents(__DIR__ . '/../Stubs/expected-changelog-without-unreleased-with-heading-text.md'))
          ->assertSuccessful();
 });
+
+it('allows release date to be in any given format', function () {
+    $this->artisan('update', [
+        '--release-notes' => <<<MD
+        ### Added
+        - New Feature A
+        - New Feature B
+
+        ### Changed
+        - Update Feature C
+
+        ### Removes
+        - Remove Feature D
+        MD,
+        '--latest-version' => 'v1.0.0',
+        '--path-to-changelog' => __DIR__ . '/../Stubs/base-changelog.md',
+        '--release-date' => '::release-date::',
+    ])
+        ->expectsOutput(file_get_contents(__DIR__ . '/../Stubs/expected-changelog-different-date-format.md'))
+        ->assertSuccessful();
+});

tests/Stubs/expected-changelog-different-date-format.md

@@ -0,0 +1,32 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+
+## [Unreleased](https://github.com/org/repo/compare/v1.0.0...HEAD)
+
+Please do not update the unreleased notes.
+
+<!-- Content should be placed here -->
+## [v1.0.0](https://github.com/org/repo/compare/v0.1.0...v1.0.0) - ::release-date::
+
+### Added
+
+- New Feature A
+- New Feature B
+
+### Changed
+
+- Update Feature C
+
+### Removes
+
+- Remove Feature D
+
+## v0.1.0 - 2021-01-01
+
+### Added
+
+- Initial Release