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bitcore/test/test.Bignum.js at master · BitTokenDev/bitcore · GitHub
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test.Bignum.js
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test.Bignum.js
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var
chai
=
chai
||
require
(
'chai'
)
;
var
bitcore
=
bitcore
||
require
(
'../bitcore'
)
;
var
coinUtil
=
coinUtil
||
bitcore
.
util
;
var
should
=
chai
.
should
(
)
;
var
assert
=
chai
.
assert
;
var
Bignum
=
bitcore
.
Bignum
;
describe
(
'Bignum'
,
function
(
)
{
it
(
'should create a bignum'
,
function
(
)
{
var
bn
=
new
Bignum
(
50
)
;
should
.
exist
(
bn
)
;
bn
.
toString
(
)
.
should
.
equal
(
'50'
)
;
}
)
;
it
(
'should parse this number'
,
function
(
)
{
var
bn
=
new
Bignum
(
999970000
)
;
bn
.
toString
(
)
.
should
.
equal
(
'999970000'
)
;
}
)
;
it
(
'should parse numbers below and at bn.js internal word size'
,
function
(
)
{
var
bn
=
new
Bignum
(
Math
.
pow
(
2
,
26
)
-
1
)
;
bn
.
toString
(
)
.
should
.
equal
(
(
Math
.
pow
(
2
,
26
)
-
1
)
.
toString
(
)
)
;
var
bn
=
new
Bignum
(
Math
.
pow
(
2
,
26
)
)
;
bn
.
toString
(
)
.
should
.
equal
(
(
Math
.
pow
(
2
,
26
)
)
.
toString
(
)
)
;
}
)
;
describe
(
'#add'
,
function
(
)
{
it
(
'should add two small numbers together'
,
function
(
)
{
var
bn1
=
new
Bignum
(
50
)
;
var
bn2
=
new
Bignum
(
75
)
;
var
bn3
=
bn1
.
add
(
bn2
)
;
bn3
.
toString
(
)
.
should
.
equal
(
'125'
)
;
}
)
;
}
)
;
describe
(
'#sub'
,
function
(
)
{
it
(
'should subtract a small number'
,
function
(
)
{
var
bn1
=
new
Bignum
(
50
)
;
var
bn2
=
new
Bignum
(
25
)
;
var
bn3
=
bn1
.
sub
(
bn2
)
;
bn3
.
toString
(
)
.
should
.
equal
(
'25'
)
;
}
)
;
}
)
;
describe
(
'#gt'
,
function
(
)
{
it
(
'should say 1 is greater than 0'
,
function
(
)
{
var
bn1
=
new
Bignum
(
1
)
;
var
bn0
=
new
Bignum
(
0
)
;
bn1
.
gt
(
bn0
)
.
should
.
equal
(
true
)
;
}
)
;
it
(
'should say a big number is greater than a small big number'
,
function
(
)
{
var
bn1
=
new
Bignum
(
'24023452345398529485723980457'
)
;
var
bn0
=
new
Bignum
(
'34098234283412341234049357'
)
;
bn1
.
gt
(
bn0
)
.
should
.
equal
(
true
)
;
}
)
;
it
(
'should say a big number is great than a standard number'
,
function
(
)
{
var
bn1
=
new
Bignum
(
'24023452345398529485723980457'
)
;
var
bn0
=
new
Bignum
(
5
)
;
bn1
.
gt
(
bn0
)
.
should
.
equal
(
true
)
;
}
)
;
}
)
;
describe
(
'#fromBuffer'
,
function
(
)
{
it
(
'should work with big endian'
,
function
(
)
{
var
bn
=
Bignum
.
fromBuffer
(
new
Buffer
(
'0001'
,
'hex'
)
,
{
endian
:
'big'
}
)
;
bn
.
toString
(
)
.
should
.
equal
(
'1'
)
;
}
)
;
it
(
'should work with big endian 256'
,
function
(
)
{
var
bn
=
Bignum
.
fromBuffer
(
new
Buffer
(
'0100'
,
'hex'
)
,
{
endian
:
'big'
}
)
;
bn
.
toString
(
)
.
should
.
equal
(
'256'
)
;
}
)
;
it
(
'should work with little endian if we specify the size'
,
function
(
)
{
var
bn
=
Bignum
.
fromBuffer
(
new
Buffer
(
'0100'
,
'hex'
)
,
{
size
:
2
,
endian
:
'little'
}
)
;
bn
.
toString
(
)
.
should
.
equal
(
'1'
)
;
}
)
;
}
)
;
describe
(
'#toBuffer'
,
function
(
)
{
it
(
'should create a 4 byte buffer'
,
function
(
)
{
var
bn
=
new
Bignum
(
1
)
;
bn
.
toBuffer
(
{
size
:
4
}
)
.
toString
(
'hex'
)
.
should
.
equal
(
'00000001'
)
;
}
)
;
it
(
'should create a 4 byte buffer in little endian'
,
function
(
)
{
var
bn
=
new
Bignum
(
1
)
;
bn
.
toBuffer
(
{
size
:
4
,
endian
:
'little'
}
)
.
toString
(
'hex'
)
.
should
.
equal
(
'01000000'
)
;
}
)
;
it
(
'should create a 2 byte buffer even if you ask for a 1 byte'
,
function
(
)
{
var
bn
=
new
Bignum
(
'ff00'
,
16
)
;
bn
.
toBuffer
(
{
size
:
1
}
)
.
toString
(
'hex'
)
.
should
.
equal
(
'ff00'
)
;
}
)
;
it
(
'should create a 4 byte buffer even if you ask for a 1 byte'
,
function
(
)
{
var
bn
=
new
Bignum
(
'ffffff00'
,
16
)
;
bn
.
toBuffer
(
{
size
:
4
}
)
.
toString
(
'hex'
)
.
should
.
equal
(
'ffffff00'
)
;
}
)
;
}
)
;
}
)
;
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