diff options
| -rw-r--r-- | Lib/test/test_math.py | 153 | ||||
| -rw-r--r-- | Lib/test/testall.out | 26 | ||||
| -rw-r--r-- | Lib/test/testall.py | 4 |
3 files changed, 183 insertions, 0 deletions
diff --git a/Lib/test/test_math.py b/Lib/test/test_math.py new file mode 100644 index 0000000..af84d2a --- /dev/null +++ b/Lib/test/test_math.py @@ -0,0 +1,153 @@ +# Python test set -- math module +# XXXX Should not do tests around zero only + +from test_support import * + +eps=1e-5 +print 'math module, testing with eps', eps +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 '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 %s, expected %s'%\ + (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) + +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 %s, expected %s'%\ + (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 '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) diff --git a/Lib/test/testall.out b/Lib/test/testall.out index e69df95..9d210a2 100644 --- a/Lib/test/testall.out +++ b/Lib/test/testall.out @@ -138,4 +138,30 @@ test_types 6.5.3 Lists 6.5.3a Additional list operations 6.6 Mappings == Dictionaries +test_math +math module, testing with eps 1e-05 +constants +acos +asin +atan +atan2 +ceil +cos +cosh +exp +fabs +floor +fmod +frexp +hypot +ldexp +log +log10 +modf +pow +sin +sinh +sqrt +tan +tanh Passed all tests. diff --git a/Lib/test/testall.py b/Lib/test/testall.py index 92e7b9f..6733a2c 100644 --- a/Lib/test/testall.py +++ b/Lib/test/testall.py @@ -29,4 +29,8 @@ print 'test_types' unload('test_types') import test_types +print 'test_math' +unload('test_math') +import test_math + print 'Passed all tests.' |