🗂 support multiple JSON files for summary

README.md

@@ -38,6 +38,11 @@ Powered by [Job Summaries](https://github.blog/2022-05-09-supercharging-github-a
     # Optional. No default
     fromJSONFile:
 
+    # Parse multiple [test2json](https://pkg.go.dev/cmd/test2json) files (newline-separated) and generate a combined summary.
+    # Will always exit(0) on successful test file parse.
+    # Optional. No default
+    fromJSONFiles:
+
     # Whitespace separated list of renderable items to omit.
     # Valid options to omit are:
     #  untested: packages that have no tests

__tests__/inputs.test.ts

@@ -25,6 +25,7 @@ describe('renderer', () => {
       moduleDirectory: '.',
       testArguments: ['./...'],
       fromJSONFile: null,
+      fromJSONFiles: null,
       omit: new Set(),
     })
   })
@@ -50,6 +51,20 @@ describe('renderer', () => {
     expect(inputs.fromJSONFile).toEqual('foo.json')
   })
 
+  it('parses fromJSONFiles', () => {
+    mockInput('fromJSONFiles', 'foo.json\nbar.json')
+    const inputs = getInputs()
+
+    expect(inputs.fromJSONFiles).toEqual(['foo.json', 'bar.json'])
+  })
+
+  it('trims whitespace and filters empty lines in fromJSONFiles', () => {
+    mockInput('fromJSONFiles', '  foo.json  \n\n  bar.json\n')
+    const inputs = getInputs()
+
+    expect(inputs.fromJSONFiles).toEqual(['foo.json', 'bar.json'])
+  })
+
   it('parses omit', () => {
     mockInput(
       'omit',

action.yml

@@ -15,6 +15,9 @@ inputs:
   fromJSONFile:
     description: 'Parse the specified JSON file, instead of executing go test'
     required: false
+  fromJSONFiles:
+    description: 'Parse multiple JSON files (newline-separated) and generate a combined summary'
+    required: false
   omit:
     description: 'Whitespace separated list of renderable items to omit. See README.md for details.'
     required: false

package.json

@@ -1,6 +1,6 @@
 {
   "name": "go-test-action",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "description": "GitHub Action to run go tests with rich summary output and annotations.",
   "main": "dist/index.js",
   "scripts": {

src/inputs.ts

@@ -4,6 +4,7 @@ export interface Inputs {
   moduleDirectory: string
   testArguments: string[]
   fromJSONFile: string | null
+  fromJSONFiles: string[] | null
   omit: Set<OmitOption>
 }
 
@@ -26,6 +27,7 @@ export const defaultInputs = (): Inputs => ({
   moduleDirectory: '.',
   testArguments: ['./...'],
   fromJSONFile: null,
+  fromJSONFiles: null,
   omit: new Set(),
 })
 
@@ -55,6 +57,14 @@ export function getInputs(): Inputs {
     inputs.fromJSONFile = fromJSONFile
   }
 
+  const fromJSONFiles = core.getInput('fromJSONFiles')
+  if (fromJSONFiles) {
+    inputs.fromJSONFiles = fromJSONFiles
+      .split('\n')
+      .map(f => f.trim())
+      .filter(f => f.length > 0)
+  }
+
   const omit = core.getInput('omit')
   if (omit) {
     omit

src/runner.ts

@@ -22,7 +22,23 @@ class Runner {
   async run() {
     const moduleName = await this.findModuleName()
 
-    if (this.inputs.fromJSONFile) {
+    if (this.inputs.fromJSONFiles) {
+      const contents = await Promise.all(
+        this.inputs.fromJSONFiles.map(file => readFile(file))
+      )
+      const stdout = contents.map(c => c.toString()).join('\n')
+      const testEvents = parseTestEvents(stdout)
+
+      const renderer = new Renderer(
+        moduleName,
+        testEvents,
+        '',
+        this.inputs.omit
+      )
+
+      await renderer.writeSummary()
+      process.exit(0)
+    } else if (this.inputs.fromJSONFile) {
       const stdout = await readFile(this.inputs.fromJSONFile)
       const testEvents = parseTestEvents(stdout.toString())