Port test_pow.py to PyUnit. From SF patch #662807
This commit is contained in:
Walter Dörwald
parent
93fe564217
commit
363f6d65a7
|
|
@ -1,25 +0,0 @@
|
|||
test_pow
|
||||
Testing integer mode...
|
||||
Testing 2-argument pow() function...
|
||||
Testing 3-argument pow() function...
|
||||
Testing long integer mode...
|
||||
Testing 2-argument pow() function...
|
||||
Testing 3-argument pow() function...
|
||||
Testing floating point mode...
|
||||
Testing 3-argument pow() function...
|
||||
The number in both columns should match.
|
||||
3 3
|
||||
-5 -5
|
||||
-1 -1
|
||||
5 5
|
||||
-3 -3
|
||||
-7 -7
|
||||
|
||||
3L 3L
|
||||
-5L -5L
|
||||
-1L -1L
|
||||
5L 5L
|
||||
-3L -3L
|
||||
-7L -7L
|
||||
|
||||
|
||||
|
|
@ -1,125 +1,111 @@
|
|||
import sys
|
||||
from test import test_support
|
||||
import test.test_support, unittest
|
||||
|
||||
class PowTest(unittest.TestCase):
|
||||
|
||||
def powtest(type):
|
||||
if type != float:
|
||||
print " Testing 2-argument pow() function..."
|
||||
for i in range(-1000, 1000):
|
||||
if pow(type(i), 0) != 1:
|
||||
raise ValueError, 'pow('+str(i)+',0) != 1'
|
||||
if pow(type(i), 1) != type(i):
|
||||
raise ValueError, 'pow('+str(i)+',1) != '+str(i)
|
||||
if pow(type(0), 1) != type(0):
|
||||
raise ValueError, 'pow(0,'+str(i)+') != 0'
|
||||
if pow(type(1), 1) != type(1):
|
||||
raise ValueError, 'pow(1,'+str(i)+') != 1'
|
||||
def powtest(self, type):
|
||||
if type != float:
|
||||
for i in range(-1000, 1000):
|
||||
self.assertEquals(pow(type(i), 0), 1)
|
||||
self.assertEquals(pow(type(i), 1), type(i))
|
||||
self.assertEquals(pow(type(0), 1), type(0))
|
||||
self.assertEquals(pow(type(1), 1), type(1))
|
||||
|
||||
for i in range(-100, 100):
|
||||
if pow(type(i), 3) != i*i*i:
|
||||
raise ValueError, 'pow('+str(i)+',3) != '+str(i*i*i)
|
||||
for i in range(-100, 100):
|
||||
self.assertEquals(pow(type(i), 3), i*i*i)
|
||||
|
||||
pow2 = 1
|
||||
for i in range(0,31):
|
||||
if pow(2, i) != pow2:
|
||||
raise ValueError, 'pow(2,'+str(i)+') != '+str(pow2)
|
||||
if i != 30 : pow2 = pow2*2
|
||||
pow2 = 1
|
||||
for i in range(0,31):
|
||||
self.assertEquals(pow(2, i), pow2)
|
||||
if i != 30 : pow2 = pow2*2
|
||||
|
||||
for othertype in int, long:
|
||||
for i in range(-10, 0) + range(1, 10):
|
||||
ii = type(i)
|
||||
for j in range(1, 11):
|
||||
jj = -othertype(j)
|
||||
try:
|
||||
for othertype in int, long:
|
||||
for i in range(-10, 0) + range(1, 10):
|
||||
ii = type(i)
|
||||
for j in range(1, 11):
|
||||
jj = -othertype(j)
|
||||
pow(ii, jj)
|
||||
except ValueError:
|
||||
raise ValueError, "pow(%s, %s) failed" % (ii, jj)
|
||||
|
||||
for othertype in int, long, float:
|
||||
for i in range(1, 100):
|
||||
zero = type(0)
|
||||
exp = -othertype(i/10.0)
|
||||
if exp == 0:
|
||||
continue
|
||||
try:
|
||||
pow(zero, exp)
|
||||
except ZeroDivisionError:
|
||||
pass # taking zero to any negative exponent should fail
|
||||
else:
|
||||
raise ValueError, "pow(%s, %s) did not fail" % (zero, exp)
|
||||
for othertype in int, long, float:
|
||||
for i in range(1, 100):
|
||||
zero = type(0)
|
||||
exp = -othertype(i/10.0)
|
||||
if exp == 0:
|
||||
continue
|
||||
self.assertRaises(ZeroDivisionError, pow, zero, exp)
|
||||
|
||||
print " Testing 3-argument pow() function..."
|
||||
il, ih = -20, 20
|
||||
jl, jh = -5, 5
|
||||
kl, kh = -10, 10
|
||||
compare = cmp
|
||||
if type == float:
|
||||
il = 1
|
||||
compare = test_support.fcmp
|
||||
elif type == int:
|
||||
jl = 0
|
||||
elif type == long:
|
||||
jl, jh = 0, 15
|
||||
for i in range(il, ih+1):
|
||||
for j in range(jl, jh+1):
|
||||
for k in range(kl, kh+1):
|
||||
if k != 0:
|
||||
if type == float or j < 0:
|
||||
try:
|
||||
pow(type(i),j,k)
|
||||
except TypeError:
|
||||
pass
|
||||
else:
|
||||
raise ValueError, "expected TypeError from " + \
|
||||
"pow%r" % ((type(i), j, k),)
|
||||
continue
|
||||
if compare(pow(type(i),j,k), pow(type(i),j)% type(k)):
|
||||
raise ValueError, "pow(" +str(i)+ "," +str(j)+ \
|
||||
"," +str(k)+ ") != pow(" +str(i)+ "," + \
|
||||
str(j)+ ") % " +str(k)
|
||||
il, ih = -20, 20
|
||||
jl, jh = -5, 5
|
||||
kl, kh = -10, 10
|
||||
asseq = self.assertEqual
|
||||
if type == float:
|
||||
il = 1
|
||||
asseq = self.assertAlmostEqual
|
||||
elif type == int:
|
||||
jl = 0
|
||||
elif type == long:
|
||||
jl, jh = 0, 15
|
||||
for i in range(il, ih+1):
|
||||
for j in range(jl, jh+1):
|
||||
for k in range(kl, kh+1):
|
||||
if k != 0:
|
||||
if type == float or j < 0:
|
||||
self.assertRaises(TypeError, pow, type(i), j, k)
|
||||
continue
|
||||
asseq(
|
||||
pow(type(i),j,k),
|
||||
pow(type(i),j)% type(k)
|
||||
)
|
||||
|
||||
def test_powint(self):
|
||||
self.powtest(int)
|
||||
|
||||
def test_powlong(self):
|
||||
self.powtest(long)
|
||||
|
||||
def test_powfloat(self):
|
||||
self.powtest(float)
|
||||
|
||||
def test_other(self):
|
||||
# Other tests-- not very systematic
|
||||
self.assertEquals(pow(3,3) % 8, pow(3,3,8))
|
||||
self.assertEquals(pow(3,3) % -8, pow(3,3,-8))
|
||||
self.assertEquals(pow(3,2) % -2, pow(3,2,-2))
|
||||
self.assertEquals(pow(-3,3) % 8, pow(-3,3,8))
|
||||
self.assertEquals(pow(-3,3) % -8, pow(-3,3,-8))
|
||||
self.assertEquals(pow(5,2) % -8, pow(5,2,-8))
|
||||
|
||||
self.assertEquals(pow(3L,3L) % 8, pow(3L,3L,8))
|
||||
self.assertEquals(pow(3L,3L) % -8, pow(3L,3L,-8))
|
||||
self.assertEquals(pow(3L,2) % -2, pow(3L,2,-2))
|
||||
self.assertEquals(pow(-3L,3L) % 8, pow(-3L,3L,8))
|
||||
self.assertEquals(pow(-3L,3L) % -8, pow(-3L,3L,-8))
|
||||
self.assertEquals(pow(5L,2) % -8, pow(5L,2,-8))
|
||||
|
||||
for i in range(-10, 11):
|
||||
for j in range(0, 6):
|
||||
for k in range(-7, 11):
|
||||
if j >= 0 and k != 0:
|
||||
self.assertEquals(
|
||||
pow(i,j) % k,
|
||||
pow(i,j,k)
|
||||
)
|
||||
if j >= 0 and k != 0:
|
||||
self.assertEquals(
|
||||
pow(long(i),j) % k,
|
||||
pow(long(i),j,k)
|
||||
)
|
||||
|
||||
def test_bug643260(self):
|
||||
class TestRpow:
|
||||
def __rpow__(self, other):
|
||||
return None
|
||||
None ** TestRpow() # Won't fail when __rpow__ invoked. SF bug #643260.
|
||||
|
||||
|
||||
print 'Testing integer mode...'
|
||||
powtest(int)
|
||||
print 'Testing long integer mode...'
|
||||
powtest(long)
|
||||
print 'Testing floating point mode...'
|
||||
powtest(float)
|
||||
def test_main():
|
||||
suite = unittest.TestSuite()
|
||||
suite.addTest(unittest.makeSuite(PowTest))
|
||||
test.test_support.run_suite(suite)
|
||||
|
||||
# Other tests-- not very systematic
|
||||
|
||||
print 'The number in both columns should match.'
|
||||
print `pow(3,3) % 8`, `pow(3,3,8)`
|
||||
print `pow(3,3) % -8`, `pow(3,3,-8)`
|
||||
print `pow(3,2) % -2`, `pow(3,2,-2)`
|
||||
print `pow(-3,3) % 8`, `pow(-3,3,8)`
|
||||
print `pow(-3,3) % -8`, `pow(-3,3,-8)`
|
||||
print `pow(5,2) % -8`, `pow(5,2,-8)`
|
||||
print
|
||||
|
||||
print `pow(3L,3L) % 8`, `pow(3L,3L,8)`
|
||||
print `pow(3L,3L) % -8`, `pow(3L,3L,-8)`
|
||||
print `pow(3L,2) % -2`, `pow(3L,2,-2)`
|
||||
print `pow(-3L,3L) % 8`, `pow(-3L,3L,8)`
|
||||
print `pow(-3L,3L) % -8`, `pow(-3L,3L,-8)`
|
||||
print `pow(5L,2) % -8`, `pow(5L,2,-8)`
|
||||
print
|
||||
|
||||
print
|
||||
|
||||
for i in range(-10, 11):
|
||||
for j in range(0, 6):
|
||||
for k in range(-7, 11):
|
||||
if j >= 0 and k != 0:
|
||||
o = pow(i,j) % k
|
||||
n = pow(i,j,k)
|
||||
if o != n: print 'Integer mismatch:', i,j,k
|
||||
if j >= 0 and k != 0:
|
||||
o = pow(long(i),j) % k
|
||||
n = pow(long(i),j,k)
|
||||
if o != n: print 'Integer mismatch:', i,j,k
|
||||
|
||||
class TestRpow:
|
||||
def __rpow__(self, other):
|
||||
return None
|
||||
None ** TestRpow() # Won't fail when __rpow__ invoked. SF bug #643260.
|
||||
if __name__ == "__main__":
|
||||
test_main()
|
||||
|
|
|
|||
Loading…
Reference in New Issue