test: add coverage for util.inspect()

Coverage stats indicate that there is no coverage for util.inspect() with a negative number and a numeric separator. Add a test case. Refs: https://coverage.nodejs.org/coverage-df507758e6c35534/lib/internal/util/inspect.js.html#L1463 PR-URL: #41527 Reviewed-By: Benjamin Gruenbaum <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Mohammed Keyvanzadeh <[email protected]> Reviewed-By: Tobias Nießen <[email protected]>
nodejs · Jan 24, 2022 · ef7c798 · ef7c798
1 parent 9226322
commit ef7c798
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/test/parallel/test-util-inspect.js b/test/parallel/test-util-inspect.js
@@ -3231,4 +3231,9 @@ assert.strictEqual(
     util.inspect(123456789.12345678, { numericSeparator: true }),
     '123_456_789.123_456_78'
   );
+
+  assert.strictEqual(
+    util.inspect(-123456789.12345678, { numericSeparator: true }),
+    '-123_456_789.123_456_78'
+  );
 }