1 files changed, 46 insertions, 0 deletions
diff --git a/test/gleam/regex_test.gleam b/test/gleam/regex_test.gleam
new file mode 100644
index 0000000..d7ffc2d
--- /dev/null
+++ b/test/gleam/regex_test.gleam
@@ -0,0 +1,46 @@
+import gleam/regex.{FromStringError, Options}
+import gleam/should
+
+pub fn from_string_test() {
+  assert Ok(re) = regex.from_string("[0-9]")
+
+  regex.match(re, "abc123")
+  |> should.equal(True)
+
+  regex.match(re, "abcxyz")
+  |> should.equal(False)
+
+  assert Error(from_string_err) = regex.from_string("[0-9")
+
+  from_string_err
+  |> should.equal(
+    FromStringError(
+      error: "missing terminating ] for character class",
+      index: 4,
+    ),
+  )
+}
+
+pub fn from_string_with_test() {
+  let options = Options(case_insensitive: True, multi_line: False)
+  assert Ok(re) = regex.from_string_with(options, "[A-B]")
+
+  regex.match(re, "abc123")
+  |> should.equal(True)
+
+  let options = Options(case_insensitive: False, multi_line: True)
+  assert Ok(re) = regex.from_string_with(options, "^[0-9]")
+
+  regex.match(re, "abc\n123")
+  |> should.equal(True)
+}
+
+pub fn match_test() {
+  assert Ok(re) = regex.from_string("^f.o.?")
+
+  regex.match(re, "foo")
+  |> should.equal(True)
+
+  regex.match(re, "boo")
+  |> should.equal(False)
+}