From 9fa39a091b4847e933871677d412a749dad26d91 Mon Sep 17 00:00:00 2001
From: Edward Faulkner <edward@eaf4.com>
Date: Fri, 23 Aug 2024 10:59:17 -0400
Subject: [PATCH] make CommandWatcher dump logs at shutdown() when a command
 has failed

---
 tests/scenarios/helpers/command-watcher.ts | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tests/scenarios/helpers/command-watcher.ts b/tests/scenarios/helpers/command-watcher.ts
index ca9d145eb..817ec1cf1 100644
--- a/tests/scenarios/helpers/command-watcher.ts
+++ b/tests/scenarios/helpers/command-watcher.ts
@@ -105,6 +105,7 @@ export default class CommandWatcher {
 
   async shutdown(): Promise<void> {
     if (this.exitCode != null) {
+      this.maybeEmitLogs();
       return;
     }
 
@@ -119,6 +120,14 @@ export default class CommandWatcher {
     });
 
     await this.waitForExit();
+    this.maybeEmitLogs();
+  }
+
+  private maybeEmitLogs() {
+    if (this.exitCode !== 0) {
+      console.error(`CommandWatcher saw non-zero exit, dumping logs:`);
+      console.error(this.lines.join('\n'));
+    }
   }
 
   async waitForExit(): Promise<number> {