dx: improve error output when a CommandAcceptanceTest spawned command…

… exits prematurely
denali-js · Sep 14, 2017 · 3c815e6 · 3c815e6
1 parent 39cf01f
commit 3c815e6
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/lib/test/command-acceptance.ts b/lib/test/command-acceptance.ts
@@ -189,7 +189,14 @@ export default class CommandAcceptanceTest {
       this.spawnedCommand.on('error', reject);
       this.spawnedCommand.on('close', () => {
         this.cleanup();
-        reject(new Error('Spawned command exited without satisfying checkOutput'));
+        let message = 'Spawned command exited without satisfying checkOutput\n';
+        message += dedent`
+          ====> stdout:
+          ${ stdoutBuffer }
+          ====> stderr:
+          ${ stderrBuffer }
+        `;
+        reject(new Error(message));
       });
 
       // Poll periodically to check the results