-
Notifications
You must be signed in to change notification settings - Fork 43
/
iterator_test.go
107 lines (98 loc) · 2.54 KB
/
iterator_test.go
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
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
// 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
//
// https://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 kivik
import (
"context"
"fmt"
"io"
"testing"
"time"
"gitlab.com/flimzy/testy"
)
type TestFeed struct {
max int64
i int64
closeErr error
}
var _ iterator = &TestFeed{}
func (f *TestFeed) Close() error { return f.closeErr }
func (f *TestFeed) Next(ifce interface{}) error {
i, ok := ifce.(*int64)
if ok {
*i = f.i
f.i++
if f.i > f.max {
return io.EOF
}
time.Sleep(5 * time.Millisecond)
return nil
}
panic(fmt.Sprintf("unknown type: %T", ifce))
}
func TestIterator(t *testing.T) {
iter := newIterator(context.Background(), nil, &TestFeed{max: 10}, func() interface{} { var i int64; return &i }())
expected := []int64{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
result := []int64{}
for iter.Next() {
val, ok := iter.curVal.(*int64)
if !ok {
panic("Unexpected type")
}
result = append(result, *val)
}
if err := iter.Err(); err != nil {
t.Errorf("Unexpected error: %s", err)
}
if d := testy.DiffAsJSON(expected, result); d != nil {
t.Errorf("Unexpected result:\n%s\n", d)
}
}
func TestCancelledIterator(t *testing.T) {
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Millisecond)
defer cancel()
iter := newIterator(ctx, nil, &TestFeed{max: 10000}, func() interface{} { var i int64; return &i }())
for iter.Next() { //nolint:revive // empty block necessary for loop
}
if err := iter.Err(); err.Error() != "context deadline exceeded" {
t.Errorf("Unexpected error: %s", err)
}
}
func Test_iter_isReady(t *testing.T) {
tests := []struct {
name string
iter *iter
err string
}{
{
name: "not ready",
iter: &iter{},
err: "kivik: Iterator access before calling Next",
},
{
name: "closed",
iter: &iter{state: stateClosed},
err: "kivik: Iterator is closed",
},
{
name: "success",
iter: &iter{state: stateRowReady},
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
err := test.iter.isReady()
if !testy.ErrorMatches(test.err, err) {
t.Errorf("Unexpected error: %s", err)
}
})
}
}