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import
assert
from
"assert"
;
import
*
as
ieee754
from
"ieee754"
;
import
{
decode
}
from
"../src/index.ts"
;
const
FLOAT32_TYPE
=
0xca
;
const
FLOAT64_TYPE
=
0xcb
;
const
SPECS
=
{
POSITIVE_ZERO
:
+
0.0
,
NEGATIVE_ZERO
:
-
0.0
,
POSITIVE_INFINITY
:
Number
.
POSITIVE_INFINITY
,
NEGATIVE_INFINITY
:
Number
.
NEGATIVE_INFINITY
,
POSITIVE_VALUE_1
:
+
0.1
,
POSITIVE_VALUE_2
:
+
42
,
POSITIVE_VALUE_3
:
+
Math
.
PI
,
POSITIVE_VALUE_4
:
+
Math
.
E
,
NEGATIVE_VALUE_1
:
-
0.1
,
NEGATIVE_VALUE_2
:
-
42
,
NEGATIVE_VALUE_3
:
-
Math
.
PI
,
NEGATIVE_VALUE_4
:
-
Math
.
E
,
MAX_SAFE_INTEGER
:
Number
.
MAX_SAFE_INTEGER
,
MIN_SAFE_INTEGER
:
Number
.
MIN_SAFE_INTEGER
,
MAX_VALUE
:
Number
.
MAX_VALUE
,
MIN_VALUE
:
Number
.
MIN_VALUE
,
}
as
Record
<
string
,
number
>
;
describe
(
"codec: float 32/64"
,
(
)
=>
{
context
(
"float 32"
,
(
)
=>
{
for
(
const
[
name
,
value
]
of
Object
.
entries
(
SPECS
)
)
{
it
(
`decodes
${
name
}
(
${
value
}
)`
,
(
)
=>
{
const
buf
=
new
Uint8Array
(
4
)
;
ieee754
.
write
(
buf
,
value
,
0
,
false
,
23
,
4
)
;
const
expected
=
ieee754
.
read
(
buf
,
0
,
false
,
23
,
4
)
;
assert
.
deepStrictEqual
(
decode
(
[
FLOAT32_TYPE
,
...
buf
]
)
,
expected
,
"matched sign"
)
;
assert
.
notDeepStrictEqual
(
decode
(
[
FLOAT32_TYPE
,
...
buf
]
)
,
-
expected
,
"unmatched sign"
)
;
}
)
;
}
it
(
`decodes NaN`
,
(
)
=>
{
const
buf
=
new
Uint8Array
(
4
)
;
ieee754
.
write
(
buf
,
NaN
,
0
,
false
,
23
,
4
)
;
const
expected
=
ieee754
.
read
(
buf
,
0
,
false
,
23
,
4
)
;
assert
.
deepStrictEqual
(
decode
(
[
FLOAT32_TYPE
,
...
buf
]
)
,
expected
,
"matched sign"
)
;
}
)
;
}
)
;
context
(
"float 64"
,
(
)
=>
{
for
(
const
[
name
,
value
]
of
Object
.
entries
(
SPECS
)
)
{
it
(
`decodes
${
name
}
(
${
value
}
)`
,
(
)
=>
{
const
buf
=
new
Uint8Array
(
8
)
;
ieee754
.
write
(
buf
,
value
,
0
,
false
,
52
,
8
)
;
const
expected
=
ieee754
.
read
(
buf
,
0
,
false
,
52
,
8
)
;
assert
.
deepStrictEqual
(
decode
(
[
FLOAT64_TYPE
,
...
buf
]
)
,
expected
,
"matched sign"
)
;
assert
.
notDeepStrictEqual
(
decode
(
[
FLOAT64_TYPE
,
...
buf
]
)
,
-
expected
,
"unmatched sign"
)
;
}
)
;
}
it
(
`decodes NaN`
,
(
)
=>
{
const
buf
=
new
Uint8Array
(
8
)
;
ieee754
.
write
(
buf
,
NaN
,
0
,
false
,
52
,
8
)
;
const
expected
=
ieee754
.
read
(
buf
,
0
,
false
,
52
,
8
)
;
assert
.
deepStrictEqual
(
decode
(
[
FLOAT64_TYPE
,
...
buf
]
)
,
expected
,
"matched sign"
)
;
}
)
;
}
)
;
}
)
;
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