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
108
109
110
111
112
113
|
package gopter
import (
"fmt"
"math"
"runtime/debug"
)
// Prop represent some kind of property that (drums please) can and should be checked
type Prop func(*GenParameters) *PropResult
// SaveProp creates s save property by handling all panics from an inner property
func SaveProp(prop Prop) Prop {
return func(genParams *GenParameters) (result *PropResult) {
defer func() {
if r := recover(); r != nil {
result = &PropResult{
Status: PropError,
Error: fmt.Errorf("Check paniced: %v", r),
ErrorStack: debug.Stack(),
}
}
}()
return prop(genParams)
}
}
// Check the property using specific parameters
func (prop Prop) Check(parameters *TestParameters) *TestResult {
iterations := math.Ceil(float64(parameters.MinSuccessfulTests) / float64(parameters.Workers))
sizeStep := float64(parameters.MaxSize-parameters.MinSize) / (iterations * float64(parameters.Workers))
genParameters := GenParameters{
MinSize: parameters.MinSize,
MaxSize: parameters.MaxSize,
MaxShrinkCount: parameters.MaxShrinkCount,
Rng: parameters.Rng,
}
runner := &runner{
parameters: parameters,
worker: func(workerIdx int, shouldStop shouldStop) *TestResult {
var n int
var d int
isExhaused := func() bool {
return n+d > parameters.MinSuccessfulTests &&
1.0+float64(parameters.Workers*n)*parameters.MaxDiscardRatio < float64(d)
}
for !shouldStop() && n < int(iterations) {
size := float64(parameters.MinSize) + (sizeStep * float64(workerIdx+(parameters.Workers*(n+d))))
propResult := prop(genParameters.WithSize(int(size)))
switch propResult.Status {
case PropUndecided:
d++
if isExhaused() {
return &TestResult{
Status: TestExhausted,
Succeeded: n,
Discarded: d,
}
}
case PropTrue:
n++
case PropProof:
n++
return &TestResult{
Status: TestProved,
Succeeded: n,
Discarded: d,
Labels: propResult.Labels,
Args: propResult.Args,
}
case PropFalse:
return &TestResult{
Status: TestFailed,
Succeeded: n,
Discarded: d,
Labels: propResult.Labels,
Args: propResult.Args,
}
case PropError:
return &TestResult{
Status: TestError,
Succeeded: n,
Discarded: d,
Labels: propResult.Labels,
Error: propResult.Error,
ErrorStack: propResult.ErrorStack,
Args: propResult.Args,
}
}
}
if isExhaused() {
return &TestResult{
Status: TestExhausted,
Succeeded: n,
Discarded: d,
}
}
return &TestResult{
Status: TestPassed,
Succeeded: n,
Discarded: d,
}
},
}
return runner.runWorkers()
}
|
