def test_SubFromDecWithBigNumApi(test_data_dir):
# Reading test data from the file
with open(test_data_dir / "testData_SubDec", "r") as subDec_txt:
for x in subDec_txt:
decNumber = x.split()
# Subtract too big numbers of arbitrary precision in dec
actual_Value = PyBigNumbers.subFromDec(decNumber[0], decNumber[1])
#Verifying the actual value with expected value
assert actual_Value == decNumber[2], "Test failed"
def __sub__(self, obj):
if (self.isDec):
if (self.mod is None):
diffVal = PyBigNumbers.subFromDec(self.value, obj.value)
else:
diffVal = PyBigNumbers.Sub_mod_Dec(self.value, obj.value,
self.mod)
retVal = diffVal(sumVal, self.mod, self.isDec)
return retVal
else:
if (self.mod is None):
diffVal = PyBigNumbers.subFromHex(self.value, obj.value)
else:
diffVal = PyBigNumbers.Sub_mod_Hex(self.value, obj.value,
self.mod)
retVal = BigNum(diffVal, self.mod, self.isDec)
return retVal