1 files changed, 18 insertions, 0 deletions
diff --git a/tests/dialects/test_trino.py b/tests/dialects/test_trino.py
new file mode 100644
index 0000000..ccc1407
--- /dev/null
+++ b/tests/dialects/test_trino.py
@@ -0,0 +1,18 @@
+from tests.dialects.test_dialect import Validator
+
+
+class TestTrino(Validator):
+    dialect = "trino"
+
+    def test_trim(self):
+        self.validate_identity("SELECT TRIM('!' FROM '!foo!')")
+        self.validate_identity("SELECT TRIM(BOTH '$' FROM '$var$')")
+        self.validate_identity("SELECT TRIM(TRAILING 'ER' FROM UPPER('worker'))")
+        self.validate_identity(
+            "SELECT TRIM(LEADING FROM '  abcd')",
+            "SELECT LTRIM('  abcd')",
+        )
+        self.validate_identity(
+            "SELECT TRIM('!foo!', '!')",
+            "SELECT TRIM('!' FROM '!foo!')",
+        )