[Python-checkins] r52495 - in python/trunk/Lib/test: output/test_math test_math.py
georg.brandl
python-checkins at python.org
Sat Oct 28 15:51:50 CEST 2006
Author: georg.brandl
Date: Sat Oct 28 15:51:49 2006
New Revision: 52495
Removed:
python/trunk/Lib/test/output/test_math
Modified:
python/trunk/Lib/test/test_math.py
Log:
Convert test_math to unittest.
Deleted: /python/trunk/Lib/test/output/test_math
==============================================================================
--- /python/trunk/Lib/test/output/test_math Sat Oct 28 15:51:49 2006
+++ (empty file)
@@ -1,28 +0,0 @@
-test_math
-math module, testing with eps 1e-05
-constants
-acos
-asin
-atan
-atan2
-ceil
-cos
-cosh
-degrees
-exp
-fabs
-floor
-fmod
-frexp
-hypot
-ldexp
-log
-log10
-modf
-pow
-radians
-sin
-sinh
-sqrt
-tan
-tanh
Modified: python/trunk/Lib/test/test_math.py
==============================================================================
--- python/trunk/Lib/test/test_math.py (original)
+++ python/trunk/Lib/test/test_math.py Sat Oct 28 15:51:49 2006
@@ -1,208 +1,214 @@
# Python test set -- math module
# XXXX Should not do tests around zero only
-from test.test_support import TestFailed, verbose
+from test.test_support import run_unittest, verbose
+import unittest
+import math
seps='1e-05'
eps = eval(seps)
-print 'math module, testing with eps', seps
-import math
-def testit(name, value, expected):
- if abs(value-expected) > eps:
- raise TestFailed, '%s returned %f, expected %f'%\
- (name, value, expected)
-
-print 'constants'
-testit('pi', math.pi, 3.1415926)
-testit('e', math.e, 2.7182818)
-
-print 'acos'
-testit('acos(-1)', math.acos(-1), math.pi)
-testit('acos(0)', math.acos(0), math.pi/2)
-testit('acos(1)', math.acos(1), 0)
-
-print 'asin'
-testit('asin(-1)', math.asin(-1), -math.pi/2)
-testit('asin(0)', math.asin(0), 0)
-testit('asin(1)', math.asin(1), math.pi/2)
-
-print 'atan'
-testit('atan(-1)', math.atan(-1), -math.pi/4)
-testit('atan(0)', math.atan(0), 0)
-testit('atan(1)', math.atan(1), math.pi/4)
-
-print 'atan2'
-testit('atan2(-1, 0)', math.atan2(-1, 0), -math.pi/2)
-testit('atan2(-1, 1)', math.atan2(-1, 1), -math.pi/4)
-testit('atan2(0, 1)', math.atan2(0, 1), 0)
-testit('atan2(1, 1)', math.atan2(1, 1), math.pi/4)
-testit('atan2(1, 0)', math.atan2(1, 0), math.pi/2)
-
-print 'ceil'
-testit('ceil(0.5)', math.ceil(0.5), 1)
-testit('ceil(1.0)', math.ceil(1.0), 1)
-testit('ceil(1.5)', math.ceil(1.5), 2)
-testit('ceil(-0.5)', math.ceil(-0.5), 0)
-testit('ceil(-1.0)', math.ceil(-1.0), -1)
-testit('ceil(-1.5)', math.ceil(-1.5), -1)
-
-print 'cos'
-testit('cos(-pi/2)', math.cos(-math.pi/2), 0)
-testit('cos(0)', math.cos(0), 1)
-testit('cos(pi/2)', math.cos(math.pi/2), 0)
-testit('cos(pi)', math.cos(math.pi), -1)
-
-print 'cosh'
-testit('cosh(0)', math.cosh(0), 1)
-testit('cosh(2)-2*cosh(1)**2', math.cosh(2)-2*math.cosh(1)**2, -1) # Thanks to Lambert
-
-print 'degrees'
-testit('degrees(pi)', math.degrees(math.pi), 180.0)
-testit('degrees(pi/2)', math.degrees(math.pi/2), 90.0)
-testit('degrees(-pi/4)', math.degrees(-math.pi/4), -45.0)
-
-print 'exp'
-testit('exp(-1)', math.exp(-1), 1/math.e)
-testit('exp(0)', math.exp(0), 1)
-testit('exp(1)', math.exp(1), math.e)
-
-print 'fabs'
-testit('fabs(-1)', math.fabs(-1), 1)
-testit('fabs(0)', math.fabs(0), 0)
-testit('fabs(1)', math.fabs(1), 1)
-
-print 'floor'
-testit('floor(0.5)', math.floor(0.5), 0)
-testit('floor(1.0)', math.floor(1.0), 1)
-testit('floor(1.5)', math.floor(1.5), 1)
-testit('floor(-0.5)', math.floor(-0.5), -1)
-testit('floor(-1.0)', math.floor(-1.0), -1)
-testit('floor(-1.5)', math.floor(-1.5), -2)
-
-print 'fmod'
-testit('fmod(10,1)', math.fmod(10,1), 0)
-testit('fmod(10,0.5)', math.fmod(10,0.5), 0)
-testit('fmod(10,1.5)', math.fmod(10,1.5), 1)
-testit('fmod(-10,1)', math.fmod(-10,1), 0)
-testit('fmod(-10,0.5)', math.fmod(-10,0.5), 0)
-testit('fmod(-10,1.5)', math.fmod(-10,1.5), -1)
-
-print 'frexp'
-def testfrexp(name, (mant, exp), (emant, eexp)):
- if abs(mant-emant) > eps or exp != eexp:
- raise TestFailed, '%s returned %r, expected %r'%\
- (name, (mant, exp), (emant,eexp))
-
-testfrexp('frexp(-1)', math.frexp(-1), (-0.5, 1))
-testfrexp('frexp(0)', math.frexp(0), (0, 0))
-testfrexp('frexp(1)', math.frexp(1), (0.5, 1))
-testfrexp('frexp(2)', math.frexp(2), (0.5, 2))
-
-print 'hypot'
-testit('hypot(0,0)', math.hypot(0,0), 0)
-testit('hypot(3,4)', math.hypot(3,4), 5)
-
-print 'ldexp'
-testit('ldexp(0,1)', math.ldexp(0,1), 0)
-testit('ldexp(1,1)', math.ldexp(1,1), 2)
-testit('ldexp(1,-1)', math.ldexp(1,-1), 0.5)
-testit('ldexp(-1,1)', math.ldexp(-1,1), -2)
-
-print 'log'
-testit('log(1/e)', math.log(1/math.e), -1)
-testit('log(1)', math.log(1), 0)
-testit('log(e)', math.log(math.e), 1)
-testit('log(32,2)', math.log(32,2), 5)
-testit('log(10**40, 10)', math.log(10**40, 10), 40)
-testit('log(10**40, 10**20)', math.log(10**40, 10**20), 2)
-
-print 'log10'
-testit('log10(0.1)', math.log10(0.1), -1)
-testit('log10(1)', math.log10(1), 0)
-testit('log10(10)', math.log10(10), 1)
-
-print 'modf'
-def testmodf(name, (v1, v2), (e1, e2)):
- if abs(v1-e1) > eps or abs(v2-e2):
- raise TestFailed, '%s returned %r, expected %r'%\
- (name, (v1,v2), (e1,e2))
-
-testmodf('modf(1.5)', math.modf(1.5), (0.5, 1.0))
-testmodf('modf(-1.5)', math.modf(-1.5), (-0.5, -1.0))
-
-print 'pow'
-testit('pow(0,1)', math.pow(0,1), 0)
-testit('pow(1,0)', math.pow(1,0), 1)
-testit('pow(2,1)', math.pow(2,1), 2)
-testit('pow(2,-1)', math.pow(2,-1), 0.5)
-
-print 'radians'
-testit('radians(180)', math.radians(180), math.pi)
-testit('radians(90)', math.radians(90), math.pi/2)
-testit('radians(-45)', math.radians(-45), -math.pi/4)
-
-print 'sin'
-testit('sin(0)', math.sin(0), 0)
-testit('sin(pi/2)', math.sin(math.pi/2), 1)
-testit('sin(-pi/2)', math.sin(-math.pi/2), -1)
-
-print 'sinh'
-testit('sinh(0)', math.sinh(0), 0)
-testit('sinh(1)**2-cosh(1)**2', math.sinh(1)**2-math.cosh(1)**2, -1)
-testit('sinh(1)+sinh(-1)', math.sinh(1)+math.sinh(-1), 0)
-
-print 'sqrt'
-testit('sqrt(0)', math.sqrt(0), 0)
-testit('sqrt(1)', math.sqrt(1), 1)
-testit('sqrt(4)', math.sqrt(4), 2)
-
-print 'tan'
-testit('tan(0)', math.tan(0), 0)
-testit('tan(pi/4)', math.tan(math.pi/4), 1)
-testit('tan(-pi/4)', math.tan(-math.pi/4), -1)
-
-print 'tanh'
-testit('tanh(0)', math.tanh(0), 0)
-testit('tanh(1)+tanh(-1)', math.tanh(1)+math.tanh(-1), 0)
-
-# RED_FLAG 16-Oct-2000 Tim
-# While 2.0 is more consistent about exceptions than previous releases, it
-# still fails this part of the test on some platforms. For now, we only
-# *run* test_exceptions() in verbose mode, so that this isn't normally
-# tested.
-
-def test_exceptions():
- print 'exceptions'
- try:
- x = math.exp(-1000000000)
- except:
- # mathmodule.c is failing to weed out underflows from libm, or
- # we've got an fp format with huge dynamic range
- raise TestFailed("underflowing exp() should not have raised "
- "an exception")
- if x != 0:
- raise TestFailed("underflowing exp() should have returned 0")
-
- # If this fails, probably using a strict IEEE-754 conforming libm, and x
- # is +Inf afterwards. But Python wants overflows detected by default.
- try:
- x = math.exp(1000000000)
- except OverflowError:
- pass
- else:
- raise TestFailed("overflowing exp() didn't trigger OverflowError")
-
- # If this fails, it could be a puzzle. One odd possibility is that
- # mathmodule.c's macros are getting confused while comparing
- # Inf (HUGE_VAL) to a NaN, and artificially setting errno to ERANGE
- # as a result (and so raising OverflowError instead).
- try:
- x = math.sqrt(-1.0)
- except ValueError:
- pass
- else:
- raise TestFailed("sqrt(-1) didn't raise ValueError")
+class MathTests(unittest.TestCase):
+
+ def ftest(self, name, value, expected):
+ if abs(value-expected) > eps:
+ self.fail('%s returned %f, expected %f'%\
+ (name, value, expected))
+
+ def testConstants(self):
+ self.ftest('pi', math.pi, 3.1415926)
+ self.ftest('e', math.e, 2.7182818)
+
+ def testAcos(self):
+ self.ftest('acos(-1)', math.acos(-1), math.pi)
+ self.ftest('acos(0)', math.acos(0), math.pi/2)
+ self.ftest('acos(1)', math.acos(1), 0)
+
+ def testAsin(self):
+ self.ftest('asin(-1)', math.asin(-1), -math.pi/2)
+ self.ftest('asin(0)', math.asin(0), 0)
+ self.ftest('asin(1)', math.asin(1), math.pi/2)
+
+ def testAtan(self):
+ self.ftest('atan(-1)', math.atan(-1), -math.pi/4)
+ self.ftest('atan(0)', math.atan(0), 0)
+ self.ftest('atan(1)', math.atan(1), math.pi/4)
+
+ def testAtan2(self):
+ self.ftest('atan2(-1, 0)', math.atan2(-1, 0), -math.pi/2)
+ self.ftest('atan2(-1, 1)', math.atan2(-1, 1), -math.pi/4)
+ self.ftest('atan2(0, 1)', math.atan2(0, 1), 0)
+ self.ftest('atan2(1, 1)', math.atan2(1, 1), math.pi/4)
+ self.ftest('atan2(1, 0)', math.atan2(1, 0), math.pi/2)
+
+ def testCeil(self):
+ self.ftest('ceil(0.5)', math.ceil(0.5), 1)
+ self.ftest('ceil(1.0)', math.ceil(1.0), 1)
+ self.ftest('ceil(1.5)', math.ceil(1.5), 2)
+ self.ftest('ceil(-0.5)', math.ceil(-0.5), 0)
+ self.ftest('ceil(-1.0)', math.ceil(-1.0), -1)
+ self.ftest('ceil(-1.5)', math.ceil(-1.5), -1)
+
+ def testCos(self):
+ self.ftest('cos(-pi/2)', math.cos(-math.pi/2), 0)
+ self.ftest('cos(0)', math.cos(0), 1)
+ self.ftest('cos(pi/2)', math.cos(math.pi/2), 0)
+ self.ftest('cos(pi)', math.cos(math.pi), -1)
+
+ def testCosh(self):
+ self.ftest('cosh(0)', math.cosh(0), 1)
+ self.ftest('cosh(2)-2*cosh(1)**2', math.cosh(2)-2*math.cosh(1)**2, -1) # Thanks to Lambert
+
+ def testDegrees(self):
+ self.ftest('degrees(pi)', math.degrees(math.pi), 180.0)
+ self.ftest('degrees(pi/2)', math.degrees(math.pi/2), 90.0)
+ self.ftest('degrees(-pi/4)', math.degrees(-math.pi/4), -45.0)
+
+ def testExp(self):
+ self.ftest('exp(-1)', math.exp(-1), 1/math.e)
+ self.ftest('exp(0)', math.exp(0), 1)
+ self.ftest('exp(1)', math.exp(1), math.e)
+
+ def testFabs(self):
+ self.ftest('fabs(-1)', math.fabs(-1), 1)
+ self.ftest('fabs(0)', math.fabs(0), 0)
+ self.ftest('fabs(1)', math.fabs(1), 1)
+
+ def testFloor(self):
+ self.ftest('floor(0.5)', math.floor(0.5), 0)
+ self.ftest('floor(1.0)', math.floor(1.0), 1)
+ self.ftest('floor(1.5)', math.floor(1.5), 1)
+ self.ftest('floor(-0.5)', math.floor(-0.5), -1)
+ self.ftest('floor(-1.0)', math.floor(-1.0), -1)
+ self.ftest('floor(-1.5)', math.floor(-1.5), -2)
+
+ def testFmod(self):
+ self.ftest('fmod(10,1)', math.fmod(10,1), 0)
+ self.ftest('fmod(10,0.5)', math.fmod(10,0.5), 0)
+ self.ftest('fmod(10,1.5)', math.fmod(10,1.5), 1)
+ self.ftest('fmod(-10,1)', math.fmod(-10,1), 0)
+ self.ftest('fmod(-10,0.5)', math.fmod(-10,0.5), 0)
+ self.ftest('fmod(-10,1.5)', math.fmod(-10,1.5), -1)
+
+ def testFrexp(self):
+ def testfrexp(name, (mant, exp), (emant, eexp)):
+ if abs(mant-emant) > eps or exp != eexp:
+ self.fail('%s returned %r, expected %r'%\
+ (name, (mant, exp), (emant,eexp)))
+
+ testfrexp('frexp(-1)', math.frexp(-1), (-0.5, 1))
+ testfrexp('frexp(0)', math.frexp(0), (0, 0))
+ testfrexp('frexp(1)', math.frexp(1), (0.5, 1))
+ testfrexp('frexp(2)', math.frexp(2), (0.5, 2))
+
+ def testHypot(self):
+ self.ftest('hypot(0,0)', math.hypot(0,0), 0)
+ self.ftest('hypot(3,4)', math.hypot(3,4), 5)
+
+ def testLdexp(self):
+ self.ftest('ldexp(0,1)', math.ldexp(0,1), 0)
+ self.ftest('ldexp(1,1)', math.ldexp(1,1), 2)
+ self.ftest('ldexp(1,-1)', math.ldexp(1,-1), 0.5)
+ self.ftest('ldexp(-1,1)', math.ldexp(-1,1), -2)
+
+ def testLog(self):
+ self.ftest('log(1/e)', math.log(1/math.e), -1)
+ self.ftest('log(1)', math.log(1), 0)
+ self.ftest('log(e)', math.log(math.e), 1)
+ self.ftest('log(32,2)', math.log(32,2), 5)
+ self.ftest('log(10**40, 10)', math.log(10**40, 10), 40)
+ self.ftest('log(10**40, 10**20)', math.log(10**40, 10**20), 2)
+
+ def testLog10(self):
+ self.ftest('log10(0.1)', math.log10(0.1), -1)
+ self.ftest('log10(1)', math.log10(1), 0)
+ self.ftest('log10(10)', math.log10(10), 1)
+
+ def testModf(self):
+ def testmodf(name, (v1, v2), (e1, e2)):
+ if abs(v1-e1) > eps or abs(v2-e2):
+ self.fail('%s returned %r, expected %r'%\
+ (name, (v1,v2), (e1,e2)))
+
+ testmodf('modf(1.5)', math.modf(1.5), (0.5, 1.0))
+ testmodf('modf(-1.5)', math.modf(-1.5), (-0.5, -1.0))
+
+ def testPow(self):
+ self.ftest('pow(0,1)', math.pow(0,1), 0)
+ self.ftest('pow(1,0)', math.pow(1,0), 1)
+ self.ftest('pow(2,1)', math.pow(2,1), 2)
+ self.ftest('pow(2,-1)', math.pow(2,-1), 0.5)
+
+ def testRadians(self):
+ self.ftest('radians(180)', math.radians(180), math.pi)
+ self.ftest('radians(90)', math.radians(90), math.pi/2)
+ self.ftest('radians(-45)', math.radians(-45), -math.pi/4)
+
+ def testSin(self):
+ self.ftest('sin(0)', math.sin(0), 0)
+ self.ftest('sin(pi/2)', math.sin(math.pi/2), 1)
+ self.ftest('sin(-pi/2)', math.sin(-math.pi/2), -1)
+
+ def testSinh(self):
+ self.ftest('sinh(0)', math.sinh(0), 0)
+ self.ftest('sinh(1)**2-cosh(1)**2', math.sinh(1)**2-math.cosh(1)**2, -1)
+ self.ftest('sinh(1)+sinh(-1)', math.sinh(1)+math.sinh(-1), 0)
+
+ def testSqrt(self):
+ self.ftest('sqrt(0)', math.sqrt(0), 0)
+ self.ftest('sqrt(1)', math.sqrt(1), 1)
+ self.ftest('sqrt(4)', math.sqrt(4), 2)
+
+ def testTan(self):
+ self.ftest('tan(0)', math.tan(0), 0)
+ self.ftest('tan(pi/4)', math.tan(math.pi/4), 1)
+ self.ftest('tan(-pi/4)', math.tan(-math.pi/4), -1)
+
+ def testTanh(self):
+ self.ftest('tanh(0)', math.tanh(0), 0)
+ self.ftest('tanh(1)+tanh(-1)', math.tanh(1)+math.tanh(-1), 0)
+
+ # RED_FLAG 16-Oct-2000 Tim
+ # While 2.0 is more consistent about exceptions than previous releases, it
+ # still fails this part of the test on some platforms. For now, we only
+ # *run* test_exceptions() in verbose mode, so that this isn't normally
+ # tested.
+
+ if verbose:
+ def test_exceptions(self):
+ try:
+ x = math.exp(-1000000000)
+ except:
+ # mathmodule.c is failing to weed out underflows from libm, or
+ # we've got an fp format with huge dynamic range
+ self.fail("underflowing exp() should not have raised "
+ "an exception")
+ if x != 0:
+ self.fail("underflowing exp() should have returned 0")
+
+ # If this fails, probably using a strict IEEE-754 conforming libm, and x
+ # is +Inf afterwards. But Python wants overflows detected by default.
+ try:
+ x = math.exp(1000000000)
+ except OverflowError:
+ pass
+ else:
+ self.fail("overflowing exp() didn't trigger OverflowError")
+
+ # If this fails, it could be a puzzle. One odd possibility is that
+ # mathmodule.c's macros are getting confused while comparing
+ # Inf (HUGE_VAL) to a NaN, and artificially setting errno to ERANGE
+ # as a result (and so raising OverflowError instead).
+ try:
+ x = math.sqrt(-1.0)
+ except ValueError:
+ pass
+ else:
+ self.fail("sqrt(-1) didn't raise ValueError")
+
+
+def test_main():
+ run_unittest(MathTests)
-if verbose:
- test_exceptions()
+if __name__ == '__main__':
+ test_main()
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