add realtikv test

Author: lcwangchao

tests/realtikvtest/pushdowntest/BUILD.bazel

@@ -0,0 +1,16 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_test")
+
+go_test(
+    name = "pushdowntest_test",
+    timeout = "short",
+    srcs = [
+        "expr_test.go",
+        "main_test.go",
+    ],
+    flaky = True,
+    deps = [
+        "//pkg/testkit",
+        "//tests/realtikvtest",
+        "@com_github_stretchr_testify//require",
+    ],
+)

tests/realtikvtest/pushdowntest/expr_test.go

@@ -0,0 +1,36 @@
+// Copyright 2024 PingCAP, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package pushdowntest
+
+import (
+	"testing"
+
+	"github.com/pingcap/tidb/pkg/testkit"
+	"github.com/pingcap/tidb/tests/realtikvtest"
+	"github.com/stretchr/testify/require"
+)
+
+// TestBitCastInTiKV see issue: https://github.com/pingcap/tidb/issues/56494
+func TestBitCastInTiKV(t *testing.T) {
+	store := realtikvtest.CreateMockStoreAndSetup(t)
+	tk := testkit.NewTestKit(t, store)
+	tk.MustExec("use test")
+	tk.MustExec("drop table if exists t1")
+	defer tk.MustExec("drop table if exists t1")
+	tk.MustExec("create table t1(a bit(24))")
+	tk.MustExec("insert into t1 values(0xffffff)")
+	err := tk.QueryToErr("select a from t1 where false not like convert(a, char)")
+	require.EqualError(t, err, "[tikv:3854]Cannot convert string '\\xFF\\xFF\\xFF' from binary to utf8mb4")
+}

tests/realtikvtest/pushdowntest/main_test.go

@@ -0,0 +1,24 @@
+// Copyright 2024 PingCAP, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package pushdowntest
+
+import (
+	"github.com/pingcap/tidb/tests/realtikvtest"
+	"testing"
+)
+
+func TestMain(m *testing.M) {
+	realtikvtest.RunTestMain(m)
+}