devops: fix parameterised tests on flakiness dashboard (#24486)

Fixes https://github.com/microsoft/devops.playwright.dev/issues/2

utils/flakiness-dashboard/processing/dashboard_compressed_v1.js

@@ -64,7 +64,7 @@ function compressReports(reports) {
       let specObject = specs.get(specId);
       if (!specObject) {
         specObject = {
-          title: spec.title,
+          title: spec.titlePath.join(' › '),
           line: spec.line,
           column: spec.column,
           tests: new Map(),

utils/flakiness-dashboard/processing/utils.js

@@ -22,13 +22,17 @@ const gunzipAsync = util.promisify(zlib.gunzip);
 
 const blobServiceClient = BlobServiceClient.fromConnectionString(process.env.AzureWebJobsStorage);
 
-function flattenSpecs(suite, result = []) {
+function flattenSpecs(suite, result = [], titlePaths = []) {
   if (suite.suites) {
-    for (const child of suite.suites)
-      flattenSpecs(child, result);
+    for (const child of suite.suites) {
+      const isFileSuite = child.column === 0 && child.line === 0;
+      flattenSpecs(child, result, (!isFileSuite && child.title) ? [...titlePaths, child.title]: titlePaths);
+    }
   }
-  for (const spec of suite.specs || [])
+  for (const spec of suite.specs || []) {
+    spec.titlePath = [...titlePaths, spec.title];
     result.push(spec);
+  }
   return result;
 }