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extension: fix unstable test TestExtensionConnEvent #39294

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Nov 21, 2022
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10 changes: 7 additions & 3 deletions server/tidb_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -2781,11 +2781,11 @@ func (l *connEventLogs) check(fn func()) {
fn()
}

func (l *connEventLogs) waitConnDisconnected() error {
func (l *connEventLogs) waitEvent(tp extension.ConnEventTp) error {
totalSleep := 0
for {
l.Lock()
if l.types[len(l.types)-1] == extension.ConnDisconnected {
if l.types[len(l.types)-1] == tp {
l.Unlock()
return nil
}
Expand All @@ -2812,6 +2812,8 @@ func TestExtensionConnEvent(t *testing.T) {
require.NoError(t, extension.Setup())

ts := createTidbTestSuite(t)
// createTidbTestSuite create an inner connection, so wait the previous connection closed
require.NoError(t, logs.waitEvent(extension.ConnDisconnected))

// test for login success
logs.reset()
Expand All @@ -2828,6 +2830,7 @@ func TestExtensionConnEvent(t *testing.T) {
}()

var expectedConn2 variable.ConnectionInfo
require.NoError(t, logs.waitEvent(extension.ConnHandshakeAccepted))
logs.check(func() {
require.Equal(t, []extension.ConnEventTp{
extension.ConnConnected,
Expand Down Expand Up @@ -2861,7 +2864,7 @@ func TestExtensionConnEvent(t *testing.T) {

require.NoError(t, conn.Close())
require.NoError(t, db.Close())
require.NoError(t, logs.waitConnDisconnected())
require.NoError(t, logs.waitEvent(extension.ConnDisconnected))
logs.check(func() {
require.Equal(t, 3, len(logs.infos))
require.Equal(t, 1, len(logs.infos[2].ActiveRoles))
Expand Down Expand Up @@ -2889,6 +2892,7 @@ func TestExtensionConnEvent(t *testing.T) {

_, err = db.Conn(context.Background())
require.Error(t, err)
require.NoError(t, logs.waitEvent(extension.ConnDisconnected))
logs.check(func() {
require.Equal(t, []extension.ConnEventTp{
extension.ConnConnected,
Expand Down