test: Add `assert_regex.bats`

Test the new `assert_regex` function.

1 files changed, 36 insertions, 0 deletions

diff --git a/test/assert_regex.bats b/test/assert_regex.bats
new file mode 100644
index 0000000..39b0dd1
--- /dev/null
+++ b/test/assert_regex.bats
@@ -0,0 +1,36 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+#
+# Literal matching
+#
+
+# Correctness
+@test "assert_regex() <value> <pattern>: succeeds if a <value> substring matches extended regular expression <pattern>" {
+  run assert_regex 'abc' '^[a-z]b[c-z]+'
+  assert_test_pass
+}
+
+@test "assert_regex() <value> <pattern>: fails if no <value> substring matches extended regular expression <pattern>" {
+  run assert_regex 'bcd' '^[a-z]b[c-z]+'
+  assert_test_fail <<'ERR_MSG'
+
+-- value does not match regular expression --
+value    : bcd
+pattern  : ^[a-z]b[c-z]+
+--
+ERR_MSG
+}
+
+# Error handling
+@test "assert_regex() <value> <pattern>: returns 1 and displays an error message if <pattern> is not a valid extended regular expression" {
+  run assert_regex value '[.*'
+
+  assert_test_fail <<'ERR_MSG'
+
+-- ERROR: assert_regex --
+Invalid extended regular expression: `[.*'
+--
+ERR_MSG
+}