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#!/usr/bin/env python
import testsupport
import os, string, sys, types, unittest
import sqlite
def intreturner(x):
return int(x) * 2
def floatreturner(x):
return float(x) * 2.0
def stringreturner(x):
return "[%s]" % x
def nullreturner(x):
return None
def exceptionreturner(x):
return 5 / 0
class MySum:
def __init__(self):
self.reset()
def reset(self):
self.sum = 0
def step(self, x):
self.sum += int(x)
def finalize(self):
val = self.sum
self.reset()
return val
class MySumFloat:
def __init__(self):
self.reset()
def reset(self):
self.sum = 0.0
def step(self, x):
self.sum += float(x)
def finalize(self):
val = self.sum
self.reset()
return val
class MySumReturnNull:
def __init__(self):
self.reset()
def reset(self):
self.sum = 0
def step(self, x):
self.sum += int(x)
def finalize(self):
return None
class MySumStepExeption:
def __init__(self):
self.reset()
def reset(self):
self.sum = 0
def step(self, x):
self.sum += int(x) / 0
def finalize(self):
val = self.sum
self.reset()
return val
class MySumFinalizeExeption:
def __init__(self):
self.reset()
def reset(self):
self.sum = 0
def step(self, x):
self.sum += int(x)
def finalize(self):
val = self.sum / 0
self.reset()
return val
class UserFunctions(unittest.TestCase, testsupport.TestSupport):
def setUp(self):
self.filename = self.getfilename()
self.cnx = sqlite.connect(self.filename)
sqlite._sqlite.enable_callback_debugging(0)
self.cnx.create_function("intreturner", 1, intreturner)
self.cnx.create_function("floatreturner", 1, floatreturner)
self.cnx.create_function("stringreturner", 1, stringreturner)
self.cnx.create_function("nullreturner", 1, nullreturner)
self.cnx.create_function("exceptionreturner", 1, exceptionreturner)
self.cnx.create_aggregate("mysum", 1, MySum)
self.cnx.create_aggregate("mysumfloat", 1, MySumFloat)
self.cnx.create_aggregate("mysumreturnnull", 1, MySumReturnNull )
self.cnx.create_aggregate("mysumstepexception", 1, MySumStepExeption)
self.cnx.create_aggregate("mysumfinalizeexception", 1, MySumFinalizeExeption)
self.cur = self.cnx.cursor()
def tearDown(self):
try:
self.cnx.close()
self.removefile()
except AttributeError:
pass
except sqlite.InterfaceError:
pass
def CheckIntFunction(self):
self.cur.execute("create table test (a)")
self.cur.execute("insert into test(a) values (%s)", 5)
self.cur.execute("-- types int")
self.cur.execute("select intreturner(a) as a from test")
res = self.cur.fetchone()
self.failUnless(isinstance(res.a, types.IntType),
"The result should have been an int.")
self.failUnlessEqual(res.a, 10,
"The function returned the wrong result.")
def CheckFloatFunction(self):
self.cur.execute("create table test (a)")
self.cur.execute("insert into test(a) values (%s)", 5.0)
self.cur.execute("-- types float")
self.cur.execute("select floatreturner(a) as a from test")
res = self.cur.fetchone()
self.failUnless(isinstance(res.a, types.FloatType),
"The result should have been a float.")
self.failUnlessEqual(res.a, 5.0 * 2.0,
"The function returned the wrong result.")
def CheckStringFunction(self):
mystr = "test"
self.cur.execute("create table test (a)")
self.cur.execute("insert into test(a) values (%s)", mystr)
self.cur.execute("-- types str")
self.cur.execute("select stringreturner(a) as a from test")
res = self.cur.fetchone()
self.failUnless(isinstance(res.a, types.StringType),
"The result should have been a string.")
self.failUnlessEqual(res.a, "[%s]" % mystr,
"The function returned the wrong result.")
def CheckNullFunction(self):
mystr = "test"
self.cur.execute("create table test (a)")
self.cur.execute("insert into test(a) values (%s)", mystr)
self.cur.execute("-- types str")
self.cur.execute("select nullreturner(a) as a from test")
res = self.cur.fetchone()
self.failUnlessEqual(res.a, None,
"The result should have been None.")
def CheckFunctionWithNullArgument(self):
mystr = "test"
self.cur.execute("-- types str")
self.cur.execute("select nullreturner(NULL) as a")
res = self.cur.fetchone()
self.failUnlessEqual(res.a, None,
"The result should have been None.")
def CheckExceptionFunction(self):
mystr = "test"
self.cur.execute("create table test (a)")
self.cur.execute("insert into test(a) values (%s)", mystr)
self.cur.execute("-- types str")
try:
self.cur.execute("select exceptionreturner(a) as a from test")
except sqlite.DatabaseError, reason:
pass
except Exception, reason:
self.fail("Wrong exception raised: %s", sys.exc_info()[0])
def CheckAggregateBasic(self):
self.cur.execute("create table test (a)")
self.cur.executemany("insert into test(a) values (%s)", [(10,), (20,), (30,)])
self.cur.execute("-- types int")
self.cur.execute("select mysum(a) as sum from test")
res = self.cur.fetchone()
self.failUnless(isinstance(res.sum, types.IntType),
"The result should have been an int.")
self.failUnlessEqual(res.sum, 60,
"The function returned the wrong result.")
def CheckAggregateFloat(self):
self.cur.execute("create table test (a)")
self.cur.executemany("insert into test(a) values (%s)", [(10.0,), (20.0,), (30.0,)])
self.cur.execute("-- types float")
self.cur.execute("select mysumfloat(a) as sum from test")
res = self.cur.fetchone()
self.failUnless(isinstance(res.sum, types.FloatType),
"The result should have been an float.")
if res.sum <= 59.9 or res.sum >= 60.1:
self.fail("The function returned the wrong result.")
def CheckAggregateReturnNull(self):
self.cur.execute("create table test (a)")
self.cur.executemany("insert into test(a) values (%s)", [(10,), (20,), (30,)])
self.cur.execute("-- types int")
self.cur.execute("select mysumreturnnull(a) as sum from test")
res = self.cur.fetchone()
self.failUnlessEqual(res.sum, None,
"The result should have been None.")
def CheckAggregateStepException(self):
self.cur.execute("create table test (a)")
self.cur.executemany("insert into test(a) values (%s)", [(10,), (20,), (30,)])
self.cur.execute("-- types int")
try:
self.cur.execute("select mysumstepexception(a) as sum from test")
except sqlite.DatabaseError, reason:
pass
except Exception, reason:
self.fail("Wrong exception raised: %s" % sys.exc_info()[0])
def CheckAggregateFinalizeException(self):
self.cur.execute("create table test (a)")
self.cur.executemany("insert into test(a) values (%s)", [(10,), (20,), (30,)])
self.cur.execute("-- types int")
try:
self.cur.execute("select mysumfinalizeexception(a) as sum from test")
except sqlite.DatabaseError, reason:
pass
except Exception, reason:
self.fail("Wrong exception raised: %s", sys.exc_info()[0])
def CheckAggregateStepNullArgument(self):
self.cur.execute("-- types int")
self.cur.execute("select mysum(NULL) as a")
res = self.cur.fetchone()
self.failUnlessEqual(res.a, 0,
"The result should have been 0.")
def suite():
user_functions = unittest.makeSuite(UserFunctions, "Check")
test_suite = unittest.TestSuite((user_functions,))
return test_suite
def main():
runner = unittest.TextTestRunner()
runner.run(suite())
if __name__ == "__main__":
main()
|
