From 0a068db450782fd069fa5dc95f0764f8464f6846 Mon Sep 17 00:00:00 2001
From: telenord <nordtelecom.yandex.ru>
Date: Wed, 6 Nov 2019 17:32:13 +0300
Subject: [PATCH] test: test cover cases when trace is empty

cover prepare_stack_trace in case when trace is empty
PR-URL: https://github.com/nodejs/node/pull/30311
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
---
 test/fixtures/source-map/emptyStackError.js |  6 ++++++
 test/parallel/test-source-map.js            | 12 ++++++++++++
 2 files changed, 18 insertions(+)
 create mode 100644 test/fixtures/source-map/emptyStackError.js

diff --git a/test/fixtures/source-map/emptyStackError.js b/test/fixtures/source-map/emptyStackError.js
new file mode 100644
index 00000000000000..b02367a180dab7
--- /dev/null
+++ b/test/fixtures/source-map/emptyStackError.js
@@ -0,0 +1,6 @@
+"use strict";
+
+Error.stackTraceLimit = 0;
+throw new RangeError('emptyStackError');
+
+
diff --git a/test/parallel/test-source-map.js b/test/parallel/test-source-map.js
index 13fa391aafefcc..ec2241f985281d 100644
--- a/test/parallel/test-source-map.js
+++ b/test/parallel/test-source-map.js
@@ -255,6 +255,18 @@ function nextdir() {
   }
 }
 
+// trace.length === 0 .
+{
+  const output = spawnSync(process.execPath, [
+    '--enable-source-maps',
+    require.resolve('../fixtures/source-map/emptyStackError.js')
+  ]);
+
+  assert.ok(
+    output.stderr.toString().match('emptyStackError')
+  );
+}
+
 function getSourceMapFromCache(fixtureFile, coverageDirectory) {
   const jsonFiles = fs.readdirSync(coverageDirectory);
   for (const jsonFile of jsonFiles) {