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float_test.go
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package
null
import
(
"encoding/json"
"testing"
)
var
(
floatJSON
=
[]
byte
(
`1.2345`
)
nullFloatJSON
=
[]
byte
(
`{"Float64":1.2345,"Valid":true}`
)
)
func
TestFloatFrom
(
t
*
testing.
T
) {
f
:=
FloatFrom
(
1.2345
)
assertFloat
(
t
,
f
,
"FloatFrom()"
)
zero
:=
FloatFrom
(
0
)
if
!
zero
.
Valid
{
t
.
Error
(
"FloatFrom(0)"
,
"is invalid, but should be valid"
)
}
}
func
TestFloatFromPtr
(
t
*
testing.
T
) {
n
:=
float64
(
1.2345
)
iptr
:=
&
n
f
:=
FloatFromPtr
(
iptr
)
assertFloat
(
t
,
f
,
"FloatFromPtr()"
)
null
:=
FloatFromPtr
(
nil
)
assertNullFloat
(
t
,
null
,
"FloatFromPtr(nil)"
)
}
func
TestUnmarshalFloat
(
t
*
testing.
T
) {
var
f
Float
err
:=
json
.
Unmarshal
(
floatJSON
,
&
f
)
maybePanic
(
err
)
assertFloat
(
t
,
f
,
"float json"
)
var
nf
Float
err
=
json
.
Unmarshal
(
nullFloatJSON
,
&
nf
)
maybePanic
(
err
)
assertFloat
(
t
,
nf
,
"sq.NullFloat64 json"
)
var
null
Float
err
=
json
.
Unmarshal
(
nullJSON
,
&
null
)
maybePanic
(
err
)
assertNullFloat
(
t
,
null
,
"null json"
)
var
badType
Float
err
=
json
.
Unmarshal
(
boolJSON
,
&
badType
)
if
err
==
nil
{
panic
(
"err should not be nil"
)
}
assertNullFloat
(
t
,
badType
,
"wrong type json"
)
var
invalid
Float
err
=
invalid
.
UnmarshalJSON
(
invalidJSON
)
if
_
,
ok
:=
err
.(
*
json.
SyntaxError
);
!
ok
{
t
.
Errorf
(
"expected json.SyntaxError, not %T"
,
err
)
}
}
func
TestTextUnmarshalFloat
(
t
*
testing.
T
) {
var
f
Float
err
:=
f
.
UnmarshalText
([]
byte
(
"1.2345"
))
maybePanic
(
err
)
assertFloat
(
t
,
f
,
"UnmarshalText() float"
)
var
blank
Float
err
=
blank
.
UnmarshalText
([]
byte
(
""
))
maybePanic
(
err
)
assertNullFloat
(
t
,
blank
,
"UnmarshalText() empty float"
)
var
null
Float
err
=
null
.
UnmarshalText
([]
byte
(
"null"
))
maybePanic
(
err
)
assertNullFloat
(
t
,
null
,
`UnmarshalText() "null"`
)
}
func
TestMarshalFloat
(
t
*
testing.
T
) {
f
:=
FloatFrom
(
1.2345
)
data
,
err
:=
json
.
Marshal
(
f
)
maybePanic
(
err
)
assertJSONEquals
(
t
,
data
,
"1.2345"
,
"non-empty json marshal"
)
// invalid values should be encoded as null
null
:=
NewFloat
(
0
,
false
)
data
,
err
=
json
.
Marshal
(
null
)
maybePanic
(
err
)
assertJSONEquals
(
t
,
data
,
"null"
,
"null json marshal"
)
}
func
TestMarshalFloatText
(
t
*
testing.
T
) {
f
:=
FloatFrom
(
1.2345
)
data
,
err
:=
f
.
MarshalText
()
maybePanic
(
err
)
assertJSONEquals
(
t
,
data
,
"1.2345"
,
"non-empty text marshal"
)
// invalid values should be encoded as null
null
:=
NewFloat
(
0
,
false
)
data
,
err
=
null
.
MarshalText
()
maybePanic
(
err
)
assertJSONEquals
(
t
,
data
,
""
,
"null text marshal"
)
}
func
TestFloatPointer
(
t
*
testing.
T
) {
f
:=
FloatFrom
(
1.2345
)
ptr
:=
f
.
Ptr
()
if
*
ptr
!=
1.2345
{
t
.
Errorf
(
"bad %s float: %#v ≠ %v
\n
"
,
"pointer"
,
ptr
,
1.2345
)
}
null
:=
NewFloat
(
0
,
false
)
ptr
=
null
.
Ptr
()
if
ptr
!=
nil
{
t
.
Errorf
(
"bad %s float: %#v ≠ %s
\n
"
,
"nil pointer"
,
ptr
,
"nil"
)
}
}
func
TestFloatIsZero
(
t
*
testing.
T
) {
f
:=
FloatFrom
(
1.2345
)
if
f
.
IsZero
() {
t
.
Errorf
(
"IsZero() should be false"
)
}
null
:=
NewFloat
(
0
,
false
)
if
!
null
.
IsZero
() {
t
.
Errorf
(
"IsZero() should be true"
)
}
zero
:=
NewFloat
(
0
,
true
)
if
zero
.
IsZero
() {
t
.
Errorf
(
"IsZero() should be false"
)
}
}
func
TestFloatSetValid
(
t
*
testing.
T
) {
change
:=
NewFloat
(
0
,
false
)
assertNullFloat
(
t
,
change
,
"SetValid()"
)
change
.
SetValid
(
1.2345
)
assertFloat
(
t
,
change
,
"SetValid()"
)
}
func
TestFloatScan
(
t
*
testing.
T
) {
var
f
Float
err
:=
f
.
Scan
(
1.2345
)
maybePanic
(
err
)
assertFloat
(
t
,
f
,
"scanned float"
)
var
null
Float
err
=
null
.
Scan
(
nil
)
maybePanic
(
err
)
assertNullFloat
(
t
,
null
,
"scanned null"
)
}
func
assertFloat
(
t
*
testing.
T
,
f
Float
,
from
string
) {
if
f
.
Float64
!=
1.2345
{
t
.
Errorf
(
"bad %s float: %f ≠ %f
\n
"
,
from
,
f
.
Float64
,
1.2345
)
}
if
!
f
.
Valid
{
t
.
Error
(
from
,
"is invalid, but should be valid"
)
}
}
func
assertNullFloat
(
t
*
testing.
T
,
f
Float
,
from
string
) {
if
f
.
Valid
{
t
.
Error
(
from
,
"is valid, but should be invalid"
)
}
}
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