add show_grants_test in sql_parser test

query/tests/it/sql/sql_parser.rs

@@ -21,6 +21,7 @@ use common_meta_types::Credentials;
 use common_meta_types::FileFormat;
 use common_meta_types::Format;
 use common_meta_types::StageParams;
+use common_meta_types::UserIdentity;
 use common_meta_types::UserPrivilegeSet;
 use common_meta_types::UserPrivilegeType;
 use databend_query::sql::statements::DfAlterUser;
@@ -38,6 +39,7 @@ use databend_query::sql::statements::DfGrantStatement;
 use databend_query::sql::statements::DfQueryStatement;
 use databend_query::sql::statements::DfRevokeStatement;
 use databend_query::sql::statements::DfShowDatabases;
+use databend_query::sql::statements::DfShowGrants;
 use databend_query::sql::statements::DfShowTables;
 use databend_query::sql::statements::DfTruncateTable;
 use databend_query::sql::statements::DfUseDatabase;
@@ -352,6 +354,28 @@ fn show_tables_test() -> Result<()> {
     Ok(())
 }
 
+#[test]
+fn show_grants_test() -> Result<()> {
+    expect_parse_ok(
+        "SHOW GRANTS",
+        DfStatement::ShowGrants(DfShowGrants {
+            user_identity: None,
+        }),
+    )?;
+
+    expect_parse_ok(
+        "SHOW GRANTS FOR 'u1'@'%'",
+        DfStatement::ShowGrants(DfShowGrants {
+            user_identity: Some(UserIdentity {
+                username: "u1".into(),
+                hostname: "%".into(),
+            }),
+        }),
+    )?;
+
+    Ok(())
+}
+
 #[test]
 fn show_functions_tests() -> Result<()> {
     use databend_query::sql::statements::DfShowFunctions;