fix(node): node:test reports correct location (#20025)

Also removed some noisy output that caused test flakiness.

1 files changed, 15 insertions, 5 deletions

diff --git a/cli/js/40_testing.js b/cli/js/40_testing.js
index 8b1557fbf..d119552e4 100644
--- a/cli/js/40_testing.js
+++ b/cli/js/40_testing.js
@@ -677,11 +677,21 @@ function test(
   // Delete this prop in case the user passed it. It's used to detect steps.
   delete testDesc.parent;
   const jsError = core.destructureError(new Error());
-  testDesc.location = {
-    fileName: jsError.frames[1].fileName,
-    lineNumber: jsError.frames[1].lineNumber,
-    columnNumber: jsError.frames[1].columnNumber,
-  };
+  let location;
+
+  for (let i = 0; i < jsError.frames.length; i++) {
+    const filename = jsError.frames[i].fileName;
+    if (filename.startsWith("ext:") || filename.startsWith("node:")) {
+      continue;
+    }
+    location = {
+      fileName: jsError.frames[i].fileName,
+      lineNumber: jsError.frames[i].lineNumber,
+      columnNumber: jsError.frames[i].columnNumber,
+    };
+    break;
+  }
+  testDesc.location = location;
   testDesc.fn = wrapTest(testDesc);
 
   const { id, origin } = ops.op_register_test(testDesc);