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
|
package speed
import (
"math"
"testing"
)
func TestIsCompatible64(t *testing.T) {
cases := []struct {
t MetricType
v interface{}
result bool
}{
{Int32Type, math.MaxInt32 + 1, false},
{Int64Type, math.MaxInt32 + 1, true},
{Uint32Type, math.MaxInt32 + 1, true},
{Uint64Type, math.MaxInt32 + 1, true},
{Int32Type, math.MinInt32 - 1, false},
{Int64Type, math.MinInt32 - 1, true},
{Uint32Type, math.MinInt32 - 1, false},
{Uint64Type, math.MinInt32 - 1, false},
{Int32Type, math.MinInt64, false},
{Int64Type, math.MinInt64, true},
{Uint32Type, math.MinInt64, false},
{Uint64Type, math.MinInt64, false},
{Int32Type, math.MaxInt64, false},
{Int64Type, math.MaxInt64, true},
{Uint32Type, math.MaxInt64, false},
{Uint64Type, math.MaxInt64, true},
{Uint32Type, math.MaxUint32 + 1, false},
{Uint64Type, math.MaxUint32 + 1, true},
{Uint32Type, uint(math.MaxUint32 + 1), false},
{Uint64Type, uint(math.MaxUint32 + 1), true},
{Uint64Type, uint(math.MaxUint64), true},
{Uint64Type, uint64(math.MaxUint64), true},
{FloatType, math.MaxFloat32, true},
{FloatType, -math.MaxFloat32, true},
{DoubleType, math.MaxFloat32, true},
{DoubleType, -math.MaxFloat32, true},
// we cannot test for `math.MaxFloat32 + 1`
// or even `math.MaxFloat32 + math.MaxUint64`
// because in floating point those aren't significant
// enough additions, so the comparison will be equal
// for more http://stackoverflow.com/q/17588419/3673043
{FloatType, math.MaxFloat32 * 2, false},
{DoubleType, math.MaxFloat32 * 2, true},
{FloatType, math.MaxFloat64, false},
{FloatType, -math.MaxFloat64, false},
{DoubleType, math.MaxFloat64, true},
{DoubleType, -math.MaxFloat64, true},
}
for i, c := range cases {
r := c.t.IsCompatible(c.v)
if r != c.result {
f := math.MaxFloat32
println((f + 1) > f)
t.Errorf("case %v: %v.IsCompatible(%v(%T)) should be %v, not %v", i+1, c.t, c.v, c.v, c.result, r)
}
}
}
|
