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#------------------------------------------------------------------------------
# Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
#
# Portions Copyright 2007-2015, Anthony Tuininga. All rights reserved.
#
# Portions Copyright 2001-2007, Computronix (Canada) Ltd., Edmonton, Alberta,
# Canada. All rights reserved.
#------------------------------------------------------------------------------
"""Module for testing number variables."""
import cx_Oracle
import decimal
import sys
if sys.version_info > (3,):
long = int
class TestNumberVar(BaseTestCase):
def outputTypeHandlerNativeInt(self, cursor, name, defaultType, size,
precision, scale):
return cursor.var(cx_Oracle.NATIVE_INT, arraysize=cursor.arraysize)
def outputTypeHandlerDecimal(self, cursor, name, defaultType, size,
precision, scale):
if defaultType == cx_Oracle.NUMBER:
return cursor.var(str, 255, outconverter = decimal.Decimal,
arraysize = cursor.arraysize)
def setUp(self):
BaseTestCase.setUp(self)
self.rawData = []
self.dataByKey = {}
for i in range(1, 11):
numberCol = i + i * 0.25
floatCol = i + i * 0.75
unconstrainedCol = i ** 3 + i * 0.5
if i % 2:
nullableCol = long(143) ** i
else:
nullableCol = None
dataTuple = (i, long(38) ** i, numberCol, floatCol,
unconstrainedCol, nullableCol)
self.rawData.append(dataTuple)
self.dataByKey[i] = dataTuple
def testBindBoolean(self):
"test binding in a boolean"
result = self.cursor.callfunc("pkg_TestBooleans.GetStringRep", str,
(True,))
self.assertEqual(result, "TRUE")
def testBindDecimal(self):
"test binding in a decimal.Decimal"
self.cursor.execute("""
select * from TestNumbers
where NumberCol - :value1 - :value2 = trunc(NumberCol)""",
value1 = decimal.Decimal("0.20"),
value2 = decimal.Decimal("0.05"))
self.assertEqual(self.cursor.fetchall(),
[self.dataByKey[1], self.dataByKey[5], self.dataByKey[9]])
def testBindFloat(self):
"test binding in a float"
self.cursor.execute("""
select * from TestNumbers
where NumberCol - :value = trunc(NumberCol)""",
value = 0.25)
self.assertEqual(self.cursor.fetchall(),
[self.dataByKey[1], self.dataByKey[5], self.dataByKey[9]])
def testBindInteger(self):
"test binding in an integer"
self.cursor.execute("""
select * from TestNumbers
where IntCol = :value""",
value = 2)
self.assertEqual(self.cursor.fetchall(), [self.dataByKey[2]])
def testBindSmallLong(self):
"test binding in a small long integer"
self.cursor.execute("""
select * from TestNumbers
where IntCol = :value""",
value = long(3))
self.assertEqual(self.cursor.fetchall(), [self.dataByKey[3]])
def testBindLargeLongAsOracleNumber(self):
"test binding in a large long integer as Oracle number"
valueVar = self.cursor.var(cx_Oracle.NUMBER)
valueVar.setvalue(0, 6088343244)
self.cursor.execute("""
begin
:value := :value + 5;
end;""",
value = valueVar)
value = valueVar.getvalue()
self.assertEqual(value, 6088343249)
def testBindLargeLongAsInteger(self):
"test binding in a large long integer as Python integer"
longValue = -9999999999999999999
self.cursor.execute("select :value from dual", value = longValue)
result, = self.cursor.fetchone()
self.assertEqual(result, longValue)
def testBindIntegerAfterString(self):
"test binding in an number after setting input sizes to a string"
self.cursor.setinputsizes(value = 15)
self.cursor.execute("""
select * from TestNumbers
where IntCol = :value""",
value = 3)
self.assertEqual(self.cursor.fetchall(), [self.dataByKey[3]])
def testBindDecimalAfterNumber(self):
"test binding in a decimal value after setting input sizes to a number"
cursor = self.connection.cursor()
value = decimal.Decimal("319438950232418390.273596")
cursor.setinputsizes(value = cx_Oracle.NUMBER)
cursor.outputtypehandler = self.outputTypeHandlerDecimal
cursor.execute("select :value from dual",
value = value)
outValue, = cursor.fetchone()
self.assertEqual(outValue, value)
def testBindNull(self):
"test binding in a null"
self.cursor.execute("""
select * from TestNumbers
where IntCol = :value""",
value = None)
self.assertEqual(self.cursor.fetchall(), [])
def testBindNumberArrayDirect(self):
"test binding in a number array"
returnValue = self.cursor.var(cx_Oracle.NUMBER)
array = [r[2] for r in self.rawData]
statement = """
begin
:returnValue := pkg_TestNumberArrays.TestInArrays(
:startValue, :array);
end;"""
self.cursor.execute(statement,
returnValue = returnValue,
startValue = 5,
array = array)
self.assertEqual(returnValue.getvalue(), 73.75)
array = list(range(15))
self.cursor.execute(statement,
startValue = 10,
array = array)
self.assertEqual(returnValue.getvalue(), 115.0)
def testBindNumberArrayBySizes(self):
"test binding in a number array (with setinputsizes)"
returnValue = self.cursor.var(cx_Oracle.NUMBER)
self.cursor.setinputsizes(array = [cx_Oracle.NUMBER, 10])
array = [r[2] for r in self.rawData]
self.cursor.execute("""
begin
:returnValue := pkg_TestNumberArrays.TestInArrays(
:startValue, :array);
end;""",
returnValue = returnValue,
startValue = 6,
array = array)
self.assertEqual(returnValue.getvalue(), 74.75)
def testBindNumberArrayByVar(self):
"test binding in a number array (with arrayvar)"
returnValue = self.cursor.var(cx_Oracle.NUMBER)
array = self.cursor.arrayvar(cx_Oracle.NUMBER,
[r[2] for r in self.rawData])
self.cursor.execute("""
begin
:returnValue := pkg_TestNumberArrays.TestInArrays(
:integerValue, :array);
end;""",
returnValue = returnValue,
integerValue = 7,
array = array)
self.assertEqual(returnValue.getvalue(), 75.75)
def testBindZeroLengthNumberArrayByVar(self):
"test binding in a zero length number array (with arrayvar)"
returnValue = self.cursor.var(cx_Oracle.NUMBER)
array = self.cursor.arrayvar(cx_Oracle.NUMBER, 0)
self.cursor.execute("""
begin
:returnValue := pkg_TestNumberArrays.TestInArrays(
:integerValue, :array);
end;""",
returnValue = returnValue,
integerValue = 8,
array = array)
self.assertEqual(returnValue.getvalue(), 8.0)
self.assertEqual(array.getvalue(), [])
def testBindInOutNumberArrayByVar(self):
"test binding in/out a number array (with arrayvar)"
array = self.cursor.arrayvar(cx_Oracle.NUMBER, 10)
originalData = [r[2] for r in self.rawData]
expectedData = [originalData[i - 1] * 10 for i in range(1, 6)] + \
originalData[5:]
array.setvalue(0, originalData)
self.cursor.execute("""
begin
pkg_TestNumberArrays.TestInOutArrays(:numElems, :array);
end;""",
numElems = 5,
array = array)
self.assertEqual(array.getvalue(), expectedData)
def testBindOutNumberArrayByVar(self):
"test binding out a Number array (with arrayvar)"
array = self.cursor.arrayvar(cx_Oracle.NUMBER, 6)
expectedData = [i * 100 for i in range(1, 7)]
self.cursor.execute("""
begin
pkg_TestNumberArrays.TestOutArrays(:numElems, :array);
end;""",
numElems = 6,
array = array)
self.assertEqual(array.getvalue(), expectedData)
def testBindOutSetInputSizes(self):
"test binding out with set input sizes defined"
vars = self.cursor.setinputsizes(value = cx_Oracle.NUMBER)
self.cursor.execute("""
begin
:value := 5;
end;""")
self.assertEqual(vars["value"].getvalue(), 5)
def testBindInOutSetInputSizes(self):
"test binding in/out with set input sizes defined"
vars = self.cursor.setinputsizes(value = cx_Oracle.NUMBER)
self.cursor.execute("""
begin
:value := :value + 5;
end;""",
value = 1.25)
self.assertEqual(vars["value"].getvalue(), 6.25)
def testBindOutVar(self):
"test binding out with cursor.var() method"
var = self.cursor.var(cx_Oracle.NUMBER)
self.cursor.execute("""
begin
:value := 5;
end;""",
value = var)
self.assertEqual(var.getvalue(), 5)
def testBindInOutVarDirectSet(self):
"test binding in/out with cursor.var() method"
var = self.cursor.var(cx_Oracle.NUMBER)
var.setvalue(0, 2.25)
self.cursor.execute("""
begin
:value := :value + 5;
end;""",
value = var)
self.assertEqual(var.getvalue(), 7.25)
def testCursorDescription(self):
"test cursor description is accurate"
self.cursor.execute("select * from TestNumbers")
self.assertEqual(self.cursor.description,
[ ('INTCOL', cx_Oracle.NUMBER, 10, None, 9, 0, 0),
('LONGINTCOL', cx_Oracle.NUMBER, 17, None, 16, 0, 0),
('NUMBERCOL', cx_Oracle.NUMBER, 13, None, 9, 2, 0),
('FLOATCOL', cx_Oracle.NUMBER, 127, None, 126, -127, 0),
('UNCONSTRAINEDCOL', cx_Oracle.NUMBER, 127, None, 0, -127, 0),
('NULLABLECOL', cx_Oracle.NUMBER, 39, None, 38, 0, 1) ])
def testFetchAll(self):
"test that fetching all of the data returns the correct results"
self.cursor.execute("select * From TestNumbers order by IntCol")
self.assertEqual(self.cursor.fetchall(), self.rawData)
self.assertEqual(self.cursor.fetchall(), [])
def testFetchMany(self):
"test that fetching data in chunks returns the correct results"
self.cursor.execute("select * From TestNumbers order by IntCol")
self.assertEqual(self.cursor.fetchmany(3), self.rawData[0:3])
self.assertEqual(self.cursor.fetchmany(2), self.rawData[3:5])
self.assertEqual(self.cursor.fetchmany(4), self.rawData[5:9])
self.assertEqual(self.cursor.fetchmany(3), self.rawData[9:])
self.assertEqual(self.cursor.fetchmany(3), [])
def testFetchOne(self):
"test that fetching a single row returns the correct results"
self.cursor.execute("""
select *
from TestNumbers
where IntCol in (3, 4)
order by IntCol""")
self.assertEqual(self.cursor.fetchone(), self.dataByKey[3])
self.assertEqual(self.cursor.fetchone(), self.dataByKey[4])
self.assertEqual(self.cursor.fetchone(), None)
def testReturnAsLong(self):
"test that fetching a long integer returns such in Python"
self.cursor.execute("""
select NullableCol
from TestNumbers
where IntCol = 9""")
col, = self.cursor.fetchone()
self.assertTrue(isinstance(col, long), "long integer not returned")
def testReturnConstantFloat(self):
"test that fetching a floating point number returns such in Python"
self.cursor.execute("select 1.25 from dual")
result, = self.cursor.fetchone()
self.assertEqual(result, 1.25)
def testReturnConstantInteger(self):
"test that fetching an integer returns such in Python"
self.cursor.execute("select 148 from dual")
result, = self.cursor.fetchone()
self.assertEqual(result, 148)
self.assertTrue(isinstance(result, int), "integer not returned")
def testAcceptableBoundaryNumbers(self):
"test that acceptable boundary numbers are handled properly"
inValues = [decimal.Decimal("9.99999999999999e+125"),
decimal.Decimal("-9.99999999999999e+125"), 0.0, 1e-130,
-1e-130]
outValues = [int("9" * 15 + "0" * 111), -int("9" * 15 + "0" * 111),
0, decimal.Decimal("1e-130"), decimal.Decimal("-1e-130")]
for inValue, outValue in zip(inValues, outValues):
self.cursor.execute("select :1 from dual", (inValue,))
result, = self.cursor.fetchone()
self.assertEqual(result, outValue)
def testUnacceptableBoundaryNumbers(self):
"test that unacceptable boundary numbers are rejected"
inValues = [1e126, -1e126, float("inf"), float("-inf"),
float("NaN"), decimal.Decimal("1e126"),
decimal.Decimal("-1e126"), decimal.Decimal("inf"),
decimal.Decimal("-inf"), decimal.Decimal("NaN")]
noRepErr = "DPI-1044: value cannot be represented as an Oracle number"
invalidErr = ""
expectedErrors = [noRepErr, noRepErr, invalidErr, invalidErr,
invalidErr, noRepErr, noRepErr, invalidErr, invalidErr,
invalidErr]
for inValue, error in zip(inValues, expectedErrors):
self.assertRaisesRegexp(cx_Oracle.DatabaseError, error,
self.cursor.execute, "select :1 from dual", (inValue,))
def testReturnFloatFromDivision(self):
"test that fetching the result of division returns a float"
self.cursor.execute("""
select IntCol / 7
from TestNumbers
where IntCol = 1""")
result, = self.cursor.fetchone()
self.assertAlmostEqual(result,
decimal.Decimal("1") / decimal.Decimal("7"))
def testStringFormat(self):
"test that string format is returned properly"
var = self.cursor.var(cx_Oracle.NUMBER)
self.assertEqual(str(var), "<cx_Oracle.NUMBER with value None>")
var.setvalue(0, 4)
self.assertEqual(str(var), "<cx_Oracle.NUMBER with value 4.0>")
def testBindNativeFloat(self):
"test that binding native float is possible"
self.cursor.setinputsizes(cx_Oracle.NATIVE_FLOAT)
self.cursor.execute("select :1 from dual", (5,))
self.assertEqual(type(self.cursor.bindvars[0]), cx_Oracle.NATIVE_FLOAT)
value, = self.cursor.fetchone()
self.assertEqual(value, 5)
self.cursor.execute("select :1 from dual", (1.5,))
self.assertEqual(type(self.cursor.bindvars[0]), cx_Oracle.NATIVE_FLOAT)
value, = self.cursor.fetchone()
self.assertEqual(value, 1.5)
self.cursor.execute("select :1 from dual", (decimal.Decimal("NaN"),))
self.assertEqual(type(self.cursor.bindvars[0]), cx_Oracle.NATIVE_FLOAT)
value, = self.cursor.fetchone()
self.assertEqual(str(value), str(float("NaN")))
def testFetchNativeInt(self):
"test fetching numbers as native integers"
self.cursor.outputtypehandler = self.outputTypeHandlerNativeInt
for value in (1, 2 ** 31, 2 ** 63 - 1, -1, -2 ** 31, -2 ** 63 + 1):
self.cursor.execute("select :1 from dual", [str(value)])
fetchedValue, = self.cursor.fetchone()
self.assertEqual(value, fetchedValue)
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