ensure that Jest Integration tests are producing JUnit correctly

jest.config.integration.js

@@ -7,6 +7,7 @@
  */
 
 const preset = require('@kbn/test/jest-preset');
+const { REPO_ROOT } = require('@kbn/dev-utils');
 
 module.exports = {
   preset: '@kbn/test',
@@ -21,7 +22,13 @@ module.exports = {
   ],
   reporters: [
     'default',
-    ['@kbn/test/target_node/jest/junit_reporter', { reportName: 'Jest Integration Tests' }],
+    [
+      '@kbn/test/target_node/jest/junit_reporter',
+      {
+        reportName: 'Jest Integration Tests',
+        rootDirectory: REPO_ROOT,
+      },
+    ],
   ],
   coverageReporters: !!process.env.CI
     ? [['json', { file: 'jest-integration.json' }]]

packages/kbn-optimizer/src/integration_tests/basic_optimization.test.ts

@@ -102,10 +102,7 @@ it('builds expected bundles, saves bundle counts to metadata', async () => {
   assert('produce one worker started event', workerStarted.length === 1);
 
   const runningStates = msgs.filter((msg) => msg.state.phase === 'running');
-  assert(
-    'produce three to five "running" states',
-    runningStates.length >= 3 && runningStates.length <= 5
-  );
+  assert('produce three to five "running" states', runningStates.length > 10);
 
   const bundleNotCachedEvents = msgs.filter((msg) => msg.event?.type === 'bundle not cached');
   assert('produce three "bundle not cached" events', bundleNotCachedEvents.length === 3);

packages/kbn-test/src/jest/junit_reporter.ts

@@ -106,6 +106,9 @@ export default class JestJUnitReporter extends BaseReporter {
 
     const reportPath = getUniqueJunitReportPath(rootDirectory, reportName);
     const reportXML = root.end();
+
+    process.stdout.write(`\nWriting Jest JUnit report to [${reportPath}]\n\n`);
+
     mkdirSync(dirname(reportPath), { recursive: true });
     writeFileSync(reportPath, reportXML, 'utf8');
   }