tests: 21_regex_literals: generalize syntax error test case

Different libc implementations produce different syntax error messages
on invalid regular expression patterns, so rework the test case to
produce stable output across all environments.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

1 files changed, 11 insertions, 5 deletions

diff --git a/tests/custom/00_syntax/21_regex_literals b/tests/custom/00_syntax/21_regex_literals
index 6d85e97..d7ba7c4 100644
--- a/tests/custom/00_syntax/21_regex_literals
+++ b/tests/custom/00_syntax/21_regex_literals
@@ -73,17 +73,23 @@ In line 2, byte 2:
 Testing regex compilation errors.
 
 -- Expect stderr --
-Syntax error: Unmatched \{
-In line 2, byte 3:
+Catched syntax error
+In line 7, byte 30:
 
- `     /foo {/`
-       ^-- Near here
+ `            die("Catched syntax error");`
+  Near here ----------------------------^
 
 
 -- End --
 
 -- Testcase --
 {%
-	 /foo {/
+	try {
+		/foo (/
+	}
+	catch (e) {
+		if (e.type == "Syntax error")
+			die("Catched syntax error");
+	}
 %}
 -- End --