1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
package client
import (
"testing"
"time"
"github.com/stretchr/testify/assert"
)
func TestTryLock(t *testing.T) {
t.Run("success case", func(t *testing.T) {
cl := &TryLock{}
testFunc := func() error {
if err := cl.Lock(); err != nil {
return err
}
defer cl.Unlock()
return nil
}
err := testFunc()
assert.NoError(t, err, "should succeed")
assert.Equal(t, int32(0), cl.n, "should match")
})
t.Run("failure case", func(t *testing.T) {
cl := &TryLock{}
testFunc := func() error {
if err := cl.Lock(); err != nil {
return err
}
defer cl.Unlock()
time.Sleep(50 * time.Millisecond)
return nil
}
var err1, err2 error
doneCh1 := make(chan struct{})
doneCh2 := make(chan struct{})
go func() {
err1 = testFunc()
close(doneCh1)
}()
go func() {
err2 = testFunc()
close(doneCh2)
}()
<-doneCh1
<-doneCh2
// Either one of them should fail
if err1 == nil {
assert.Error(t, err2, "should fail")
} else {
assert.Error(t, err1, "should fail")
}
assert.Equal(t, int32(0), cl.n, "should match")
})
}
|
