From c28cb7b76c08181487a846a8e0d5bb95db74a6d0 Mon Sep 17 00:00:00 2001
From: Alex Thiessen <alex.thiessen.de+github@gmail.com>
Date: Thu, 26 May 2022 13:57:26 +0200
Subject: [PATCH] test/assert_regex.bats: Test the error case

Ensure behavior in case of invalid regular expression is well-defined.
---
 test/assert_regex.bats | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/test/assert_regex.bats b/test/assert_regex.bats
index 0d8d1f3..aa3014b 100644
--- a/test/assert_regex.bats
+++ b/test/assert_regex.bats
@@ -22,3 +22,15 @@ pattern  : ^[a-z]b[c-z]+
 --
 ERR_MSG
 }
+
+# Error handling
+@test "assert_regex() <value> <pattern>: returns 1 and displays an error message if <regexp> is not a valid extended regular expression" {
+  run assert_output --regexp '[.*'
+
+  assert_test_fail <<'ERR_MSG'
+
+-- ERROR: assert_regex --
+Invalid extended regular expression: `[.*'
+--
+ERR_MSG
+}