1 files changed, 4 insertions, 0 deletions
diff --git a/packages/taler-harness/src/harness/harness.ts b/packages/taler-harness/src/harness/harness.ts
index 136ec3d15..4fc462ddf 100644
--- a/packages/taler-harness/src/harness/harness.ts
+++ b/packages/taler-harness/src/harness/harness.ts
@@ -274,6 +274,7 @@ export class GlobalTestState {
   procs: ProcessWrapper[];
   servers: http.Server[];
   inShutdown: boolean = false;
+  stepSet: Set<string> = new Set();
   constructor(params: GlobalTestParams) {
     this.testDir = params.testDir;
     this.procs = [];
@@ -423,6 +424,9 @@ export class GlobalTestState {
     // Now we just log, later we may report the steps that were done
     // to easily see where the test hangs.
     console.info(`STEP: ${stepName}`);
+    if (this.stepSet.has(stepName)) {
+      throw Error(`duplicate step (${stepName})`);
+    }
   }
 }