test: Add test for input-file usage

.github/workflows/test.yml

@@ -864,3 +864,36 @@ jobs:
         env:
           FILES: "test-file-pre-release.json"
           EXPECTED_VERSION: "1.5.0"
+
+  test-input-file:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+        with:
+          path: "./"
+
+      - run: npm ci --prod
+
+      - run: "git config --global user.email 'changelog@github.com'"
+      - run: "git config --global user.name 'Awesome Github action'"
+      - run: "git add . && git commit --allow-empty -m 'feat: Added fake file so version will be bumped'"
+
+      - name: Generate changelog
+        id: changelog
+        uses: ./
+        env:
+          ENV: "dont-use-git"
+          EXPECTED_TAG: "v6.5.0"
+        with:
+          input-file: "./test-input-file.md"
+          github-token: ${{ secrets.github_token }}
+          version-file: "./test-file-empty.toml"
+          version-path: "package.version"
+          fallback-version: "6.5.0"
+
+      - name: Test output
+        run: node ./test-file-content.js
+        env:
+          OUTPUT_FILE: "CHANGELOG.md"
+          EXPECTED_FILE: "test-input-file.md"

node_modules/.package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "conventional-changelog-action",
-  "version": "3.17.0",
+  "version": "3.18.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {

test-file-content.js

@@ -0,0 +1,30 @@
+const fs = require('fs')
+const assert = require('assert')
+const yaml = require('yaml')
+
+const actionConfig = yaml.parse(fs.readFileSync('./action.yml', 'utf8'))
+
+const {
+  OUTPUT_FILE = 'CHANGELOG.md',
+  EXPECTED_FILE = 'test-input-file.md',
+} = process.env
+
+assert.ok(OUTPUT_FILE, 'Output file is not defined!')
+assert.ok(EXPECTED_FILE, 'Expected file is not defined!')
+
+/**
+ * Test that the generated logs match the expected output
+ */
+console.log(`Going to test file "${OUTPUT_FILE}" against expected "${EXPECTED_FILE}"`)
+
+const outputFileContent = fs.readFileSync(OUTPUT_FILE.trim(), 'utf8').split('\n');
+assert.ok(outputFileContent, 'Content could not be parsed!')
+console.log(`"${OUTPUT_FILE}" has valid content`, outputFileContent)
+
+const expectedFileContent = fs.readFileSync(EXPECTED_FILE.trim(), 'utf8').split('\n');
+assert.ok(expectedFileContent, 'Content could not be parsed!')
+console.log(`"${EXPECTED_FILE}" has valid content`, expectedFileContent)
+
+const linesToCompare = 11
+assert.deepStrictEqual(outputFileContent.slice(linesToCompare * -1), expectedFileContent.slice(linesToCompare * -1), 'Output-file does not contain the expected input-file content')
+console.log('The input-file\'s content exists at the end of the generated logs')

test-input-file.md

@@ -0,0 +1,11 @@
+# This is content that will remain in the changelogs throughout all future releases
+
+## [1.0.0](https://github.com/TriPSs/conventional-changelog-action/compare/v3.18.0...v3.18.1) (2023-05-18)
+
+### Features
+
+* Make another commit
+
+### Bug Fixes
+
+* Make a preexisting commit