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
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package sql
import (
"fmt"
"reflect"
"testing"
"time"
)
var someTime = time.Unix(123, 0)
type conversionTest struct {
s, d interface{} // source and destination
// following are used if they're non-zero
wantint int64
wantuint uint64
wantstr string
wantf32 float32
wantf64 float64
wanttime time.Time
wantbool bool // used if d is of type *bool
wanterr string
}
// Target variables for scanning into.
var (
scanstr string
scanint int
scanint8 int8
scanint16 int16
scanint32 int32
scanuint8 uint8
scanuint16 uint16
scanbool bool
scanf32 float32
scanf64 float64
scantime time.Time
)
var conversionTests = []conversionTest{
// Exact conversions (destination pointer type matches source type)
{s: "foo", d: &scanstr, wantstr: "foo"},
{s: 123, d: &scanint, wantint: 123},
{s: someTime, d: &scantime, wanttime: someTime},
// To strings
{s: []byte("byteslice"), d: &scanstr, wantstr: "byteslice"},
{s: 123, d: &scanstr, wantstr: "123"},
{s: int8(123), d: &scanstr, wantstr: "123"},
{s: int64(123), d: &scanstr, wantstr: "123"},
{s: uint8(123), d: &scanstr, wantstr: "123"},
{s: uint16(123), d: &scanstr, wantstr: "123"},
{s: uint32(123), d: &scanstr, wantstr: "123"},
{s: uint64(123), d: &scanstr, wantstr: "123"},
{s: 1.5, d: &scanstr, wantstr: "1.5"},
// Strings to integers
{s: "255", d: &scanuint8, wantuint: 255},
{s: "256", d: &scanuint8, wanterr: `converting string "256" to a uint8: strconv.ParseUint: parsing "256": value out of range`},
{s: "256", d: &scanuint16, wantuint: 256},
{s: "-1", d: &scanint, wantint: -1},
{s: "foo", d: &scanint, wanterr: `converting string "foo" to a int: strconv.ParseInt: parsing "foo": invalid syntax`},
// True bools
{s: true, d: &scanbool, wantbool: true},
{s: "True", d: &scanbool, wantbool: true},
{s: "TRUE", d: &scanbool, wantbool: true},
{s: "1", d: &scanbool, wantbool: true},
{s: 1, d: &scanbool, wantbool: true},
{s: int64(1), d: &scanbool, wantbool: true},
{s: uint16(1), d: &scanbool, wantbool: true},
// False bools
{s: false, d: &scanbool, wantbool: false},
{s: "false", d: &scanbool, wantbool: false},
{s: "FALSE", d: &scanbool, wantbool: false},
{s: "0", d: &scanbool, wantbool: false},
{s: 0, d: &scanbool, wantbool: false},
{s: int64(0), d: &scanbool, wantbool: false},
{s: uint16(0), d: &scanbool, wantbool: false},
// Not bools
{s: "yup", d: &scanbool, wanterr: `sql/driver: couldn't convert "yup" into type bool`},
{s: 2, d: &scanbool, wanterr: `sql/driver: couldn't convert 2 into type bool`},
// Floats
{s: float64(1.5), d: &scanf64, wantf64: float64(1.5)},
{s: int64(1), d: &scanf64, wantf64: float64(1)},
{s: float64(1.5), d: &scanf32, wantf32: float32(1.5)},
{s: "1.5", d: &scanf32, wantf32: float32(1.5)},
{s: "1.5", d: &scanf64, wantf64: float64(1.5)},
}
func intValue(intptr interface{}) int64 {
return reflect.Indirect(reflect.ValueOf(intptr)).Int()
}
func uintValue(intptr interface{}) uint64 {
return reflect.Indirect(reflect.ValueOf(intptr)).Uint()
}
func float64Value(ptr interface{}) float64 {
return *(ptr.(*float64))
}
func float32Value(ptr interface{}) float32 {
return *(ptr.(*float32))
}
func timeValue(ptr interface{}) time.Time {
return *(ptr.(*time.Time))
}
func TestConversions(t *testing.T) {
for n, ct := range conversionTests {
err := convertAssign(ct.d, ct.s)
errstr := ""
if err != nil {
errstr = err.Error()
}
errf := func(format string, args ...interface{}) {
base := fmt.Sprintf("convertAssign #%d: for %v (%T) -> %T, ", n, ct.s, ct.s, ct.d)
t.Errorf(base+format, args...)
}
if errstr != ct.wanterr {
errf("got error %q, want error %q", errstr, ct.wanterr)
}
if ct.wantstr != "" && ct.wantstr != scanstr {
errf("want string %q, got %q", ct.wantstr, scanstr)
}
if ct.wantint != 0 && ct.wantint != intValue(ct.d) {
errf("want int %d, got %d", ct.wantint, intValue(ct.d))
}
if ct.wantuint != 0 && ct.wantuint != uintValue(ct.d) {
errf("want uint %d, got %d", ct.wantuint, uintValue(ct.d))
}
if ct.wantf32 != 0 && ct.wantf32 != float32Value(ct.d) {
errf("want float32 %v, got %v", ct.wantf32, float32Value(ct.d))
}
if ct.wantf64 != 0 && ct.wantf64 != float64Value(ct.d) {
errf("want float32 %v, got %v", ct.wantf64, float64Value(ct.d))
}
if bp, boolTest := ct.d.(*bool); boolTest && *bp != ct.wantbool && ct.wanterr == "" {
errf("want bool %v, got %v", ct.wantbool, *bp)
}
if !ct.wanttime.IsZero() && !ct.wanttime.Equal(timeValue(ct.d)) {
errf("want time %v, got %v", ct.wanttime, timeValue(ct.d))
}
}
}
func TestNullableString(t *testing.T) {
var ns NullableString
convertAssign(&ns, []byte("foo"))
if !ns.Valid {
t.Errorf("expecting not null")
}
if ns.String != "foo" {
t.Errorf("expecting foo; got %q", ns.String)
}
convertAssign(&ns, nil)
if ns.Valid {
t.Errorf("expecting null on nil")
}
if ns.String != "" {
t.Errorf("expecting blank on nil; got %q", ns.String)
}
}
|
