util/mock: migrate test-infra to testify (pingcap#26159)

util/mock/main_test.go

@@ -0,0 +1,26 @@
+// Copyright 2021 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,
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package mock
+
+import (
+	"testing"
+
+	"github.com/pingcap/tidb/util/testbridge"
+	"go.uber.org/goleak"
+)
+
+func TestMain(m *testing.M) {
+	testbridge.WorkaroundGoCheckFlags()
+	goleak.VerifyTestMain(m)
+}

util/mock/mock_test.go

@@ -16,20 +16,9 @@ package mock
 import (
 	"testing"
 
-	. "github.com/pingcap/check"
-	"github.com/pingcap/tidb/util/testleak"
+	"github.com/stretchr/testify/assert"
 )
 
-func TestT(t *testing.T) {
-	CustomVerboseFlag = true
-	TestingT(t)
-}
-
-var _ = Suite(&testMockSuite{})
-
-type testMockSuite struct {
-}
-
 type contextKeyType int
 
 func (k contextKeyType) String() string {
@@ -38,17 +27,18 @@ func (k contextKeyType) String() string {
 
 const contextKey contextKeyType = 0
 
-func (s *testMockSuite) TestContext(c *C) {
-	defer testleak.AfterTest(c)()
+func TestContext(t *testing.T) {
+	t.Parallel()
+
 	ctx := NewContext()
 
 	ctx.SetValue(contextKey, 1)
 	v := ctx.Value(contextKey)
-	c.Assert(v, Equals, 1)
+	assert.Equal(t, 1, v)
 
 	ctx.ClearValue(contextKey)
 	v = ctx.Value(contextKey)
-	c.Assert(v, IsNil)
+	assert.Nil(t, v)
 }
 
 func BenchmarkNewContext(b *testing.B) {