Multiline message-path and concatenation (#88)

__tests__/add-pr-comment.test.ts

@@ -3,11 +3,16 @@ import * as github from '@actions/github'
 import { WebhookPayload } from '@actions/github/lib/interfaces'
 import { rest } from 'msw'
 import { setupServer } from 'msw/node'
+import * as fs from 'node:fs/promises'
 import * as path from 'node:path'
 import { afterAll, afterEach, beforeAll, beforeEach, describe, expect, it, vi } from 'vitest'
 import run from '../src/main'
 import apiResponse from './sample-pulls-api-response.json'
 
+const messagePath1Fixture = path.resolve(__dirname, './message-part-1.txt')
+const messagePath1FixturePayload = await fs.readFile(messagePath1Fixture, 'utf-8')
+const messagePath2Fixture = path.resolve(__dirname, './message-part-2.txt')
+
 const repoToken = '12345'
 const commitSha = 'abc123'
 const simpleMessage = 'hello world'
@@ -89,12 +94,19 @@ const handlers = [
 const server = setupServer(...handlers)
 
 describe('add-pr-comment action', () => {
-  beforeAll(() => server.listen({ onUnhandledRequest: 'error' }))
+  beforeAll(() => {
+    vi.spyOn(console, 'log').mockImplementation(() => {})
+    vi.spyOn(core, 'debug').mockImplementation(() => {})
+    vi.spyOn(core, 'info').mockImplementation(() => {})
+    vi.spyOn(core, 'warning').mockImplementation(() => {})
+    server.listen({ onUnhandledRequest: 'error' })
+  })
   afterAll(() => server.close())
 
   beforeEach(() => {
     inputs = { ...defaultInputs }
     issueNumber = defaultIssueNumber
+    messagePayload = undefined
 
     vi.resetModules()
 
@@ -141,17 +153,46 @@ describe('add-pr-comment action', () => {
 
   it('creates a comment with a message-path', async () => {
     inputs.message = undefined
-    inputs['message-path'] = path.resolve(__dirname, './message.txt')
+    inputs['message-path'] = messagePath1Fixture
     inputs['allow-repeats'] = 'true'
 
     await expect(run()).resolves.not.toThrow()
+    expect(`<!-- add-pr-comment:add-pr-comment -->\n\n${messagePath1FixturePayload}`).toEqual(
+      messagePayload?.body,
+    )
+    expect(core.setOutput).toHaveBeenCalledWith('comment-created', 'true')
+    expect(core.setOutput).toHaveBeenCalledWith('comment-id', postIssueCommentsResponse.id)
+  })
+
+  it('creates a comment with multiple message-paths concatenated', async () => {
+    inputs.message = undefined
+    inputs['message-path'] = `${messagePath1Fixture}\n${messagePath2Fixture}`
+    inputs['allow-repeats'] = 'true'
+
+    await expect(run()).resolves.not.toThrow()
+    expect(
+      `<!-- add-pr-comment:add-pr-comment -->\n\n${messagePath1FixturePayload}\n${messagePath1FixturePayload}`,
+    ).toEqual(messagePayload?.body)
+    expect(core.setOutput).toHaveBeenCalledWith('comment-created', 'true')
+    expect(core.setOutput).toHaveBeenCalledWith('comment-id', postIssueCommentsResponse.id)
+  })
+
+  it('supports globs in message paths', async () => {
+    inputs.message = undefined
+    inputs['message-path'] = `${path.resolve(__dirname)}/message-part-*.txt`
+    inputs['allow-repeats'] = 'true'
+
+    await expect(run()).resolves.not.toThrow()
+    expect(
+      `<!-- add-pr-comment:add-pr-comment -->\n\n${messagePath1FixturePayload}\n${messagePath1FixturePayload}`,
+    ).toEqual(messagePayload?.body)
     expect(core.setOutput).toHaveBeenCalledWith('comment-created', 'true')
     expect(core.setOutput).toHaveBeenCalledWith('comment-id', postIssueCommentsResponse.id)
   })
 
   it('fails when both message and message-path are defined', async () => {
     inputs.message = 'foobar'
-    inputs['message-path'] = path.resolve(__dirname, './message.txt')
+    inputs['message-path'] = messagePath1Fixture
 
     await expect(run()).resolves.not.toThrow()
     expect(core.setFailed).toHaveBeenCalledWith('must specify only one, message or message-path')

__tests__/message-part-2.txt

@@ -0,0 +1,7 @@
+## [Preview link](https://antares-blog-staging-pr-${{ github.event.number }}.azurewebsites.net)
+
+- Your changes have been deployed to the preview site. The preview site will update as you add more commits to this branch.
+- The preview site shows any future-dated articles. Don't worry, if you are publishing a future-dated article, it will not show on the production site until the file's specified date.
+- The preview link is shareable, but will be deleted when the pull request is merged or closed.
+
+> *This is an automated message.*