feat: add junit formatter

CHANGELOG.md

@@ -8,6 +8,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 Please see [CONTRIBUTING.md](https://github.com/cucumber/cucumber/blob/master/CONTRIBUTING.md) on how to contribute to Cucumber.
 
 ## [Unreleased]
+### Added
+- Add new JUnit formatter ([#2121](https://github.com/cucumber/cucumber-js/pull/2121))
 
 ## [8.5.2] - 2022-08-24
 ### Added

docs/formatters.md

@@ -103,6 +103,10 @@ Outputs details of the test run in the legacy JSON format.
 
 *Note: this formatter is in maintenance mode and won't have new features added to it. Where you need a structured data representation of your test run, it's best to use the `message` formatter. Tools that rely on this formatter will continue to work, but are encouraged to migrate to consume the `message` output instead.*
 
+### `junit`
+
+The JUnit formatter produces a XML based JUnit report.
+
 ### `snippets`
 
 The Snippets Formatter doesn't output anything regarding the test run; it just prints [Snippets to implement any undefined steps](./snippets.md). This is useful when you want to quickly zero in on the steps you have to implement and grab the snippet code for them in one go.

package.json

@@ -232,6 +232,7 @@
     "tmp": "^0.2.1",
     "util-arity": "^1.1.0",
     "verror": "^1.10.0",
+    "xmlbuilder": "^15.1.1",
     "yup": "^0.32.11"
   },
   "devDependencies": {
@@ -241,6 +242,7 @@
     "@microsoft/api-extractor": "7.28.7",
     "@sinonjs/fake-timers": "9.1.2",
     "@types/chai": "4.3.1",
+    "@types/chai-xml": "^0.3.2",
     "@types/dirty-chai": "2.0.2",
     "@types/express": "4.17.13",
     "@types/fs-extra": "9.0.13",
@@ -263,6 +265,7 @@
     "@typescript-eslint/parser": "5.32.0",
     "chai": "4.3.6",
     "chai-exclude": "2.1.0",
+    "chai-xml": "^0.4.0",
     "coffeescript": "2.7.0",
     "dependency-lint": "7.1.0",
     "dirty-chai": "2.0.1",

src/formatter/helpers/formatters.ts

@@ -9,6 +9,7 @@ import SummaryFormatter from '../summary_formatter'
 import UsageFormatter from '../usage_formatter'
 import UsageJsonFormatter from '../usage_json_formatter'
 import HtmlFormatter from '../html_formatter'
+import JunitFormatter from '../junit_formatter'
 
 const Formatters = {
   getFormatters(): Record<string, typeof Formatter> {
@@ -23,6 +24,7 @@ const Formatters = {
       summary: SummaryFormatter,
       usage: UsageFormatter,
       'usage-json': UsageJsonFormatter,
+      junit: JunitFormatter,
     }
   },
   buildFormattersDocumentationString(): string {