b340771c37
NATIVE_FLOAT or NATIVE_DOUBLE types, all numbers are converted to strings and passed through to ODPI-C in all Python versions; improved error message when a value cannot be represented by an Oracle number value; improved test suite to verify that calling executemany() with integers, floats and decimal values intermixed with each other works as expected (https://github.com/oracle/python-cx_Oracle/issues/241).
383 lines
16 KiB
Python
383 lines
16 KiB
Python
#------------------------------------------------------------------------------
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# Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
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#
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# Portions Copyright 2007-2015, Anthony Tuininga. All rights reserved.
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#
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# Portions Copyright 2001-2007, Computronix (Canada) Ltd., Edmonton, Alberta,
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# Canada. All rights reserved.
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#------------------------------------------------------------------------------
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"""Module for testing number variables."""
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import cx_Oracle
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import decimal
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import sys
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if sys.version_info > (3,):
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long = int
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class TestNumberVar(BaseTestCase):
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def outputTypeHandlerDecimal(self, cursor, name, defaultType, size,
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precision, scale):
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if defaultType == cx_Oracle.NUMBER:
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return cursor.var(str, 255, outconverter = decimal.Decimal,
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arraysize = cursor.arraysize)
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def setUp(self):
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BaseTestCase.setUp(self)
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self.rawData = []
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self.dataByKey = {}
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for i in range(1, 11):
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numberCol = i + i * 0.25
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floatCol = i + i * 0.75
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unconstrainedCol = i ** 3 + i * 0.5
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if i % 2:
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nullableCol = long(143) ** i
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else:
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nullableCol = None
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dataTuple = (i, long(38) ** i, numberCol, floatCol,
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unconstrainedCol, nullableCol)
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self.rawData.append(dataTuple)
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self.dataByKey[i] = dataTuple
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def testBindBoolean(self):
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"test binding in a boolean"
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result = self.cursor.callfunc("pkg_TestBooleans.GetStringRep", str,
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(True,))
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self.assertEqual(result, "TRUE")
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def testBindDecimal(self):
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"test binding in a decimal.Decimal"
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self.cursor.execute("""
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select * from TestNumbers
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where NumberCol - :value1 - :value2 = trunc(NumberCol)""",
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value1 = decimal.Decimal("0.20"),
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value2 = decimal.Decimal("0.05"))
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self.assertEqual(self.cursor.fetchall(),
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[self.dataByKey[1], self.dataByKey[5], self.dataByKey[9]])
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def testBindFloat(self):
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"test binding in a float"
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self.cursor.execute("""
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select * from TestNumbers
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where NumberCol - :value = trunc(NumberCol)""",
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value = 0.25)
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self.assertEqual(self.cursor.fetchall(),
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[self.dataByKey[1], self.dataByKey[5], self.dataByKey[9]])
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def testBindInteger(self):
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"test binding in an integer"
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self.cursor.execute("""
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select * from TestNumbers
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where IntCol = :value""",
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value = 2)
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self.assertEqual(self.cursor.fetchall(), [self.dataByKey[2]])
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def testBindSmallLong(self):
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"test binding in a small long integer"
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self.cursor.execute("""
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select * from TestNumbers
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where IntCol = :value""",
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value = long(3))
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self.assertEqual(self.cursor.fetchall(), [self.dataByKey[3]])
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def testBindLargeLongAsOracleNumber(self):
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"test binding in a large long integer as Oracle number"
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valueVar = self.cursor.var(cx_Oracle.NUMBER)
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valueVar.setvalue(0, 6088343244)
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self.cursor.execute("""
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begin
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:value := :value + 5;
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end;""",
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value = valueVar)
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value = valueVar.getvalue()
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self.assertEqual(value, 6088343249)
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def testBindLargeLongAsInteger(self):
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"test binding in a large long integer as Python integer"
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longValue = -9999999999999999999
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self.cursor.execute("select :value from dual", value = longValue)
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result, = self.cursor.fetchone()
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self.assertEqual(result, longValue)
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def testBindIntegerAfterString(self):
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"test binding in an number after setting input sizes to a string"
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self.cursor.setinputsizes(value = 15)
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self.cursor.execute("""
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select * from TestNumbers
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where IntCol = :value""",
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value = 3)
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self.assertEqual(self.cursor.fetchall(), [self.dataByKey[3]])
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def testBindDecimalAfterNumber(self):
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"test binding in a decimal value after setting input sizes to a number"
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cursor = self.connection.cursor()
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value = decimal.Decimal("319438950232418390.273596")
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cursor.setinputsizes(value = cx_Oracle.NUMBER)
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cursor.outputtypehandler = self.outputTypeHandlerDecimal
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cursor.execute("select :value from dual",
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value = value)
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outValue, = cursor.fetchone()
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self.assertEqual(outValue, value)
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def testBindNull(self):
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"test binding in a null"
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self.cursor.execute("""
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select * from TestNumbers
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where IntCol = :value""",
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value = None)
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self.assertEqual(self.cursor.fetchall(), [])
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def testBindNumberArrayDirect(self):
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"test binding in a number array"
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returnValue = self.cursor.var(cx_Oracle.NUMBER)
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array = [r[2] for r in self.rawData]
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statement = """
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begin
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:returnValue := pkg_TestNumberArrays.TestInArrays(
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:startValue, :array);
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end;"""
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self.cursor.execute(statement,
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returnValue = returnValue,
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startValue = 5,
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array = array)
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self.assertEqual(returnValue.getvalue(), 73.75)
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array = list(range(15))
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self.cursor.execute(statement,
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startValue = 10,
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array = array)
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self.assertEqual(returnValue.getvalue(), 115.0)
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def testBindNumberArrayBySizes(self):
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"test binding in a number array (with setinputsizes)"
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returnValue = self.cursor.var(cx_Oracle.NUMBER)
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self.cursor.setinputsizes(array = [cx_Oracle.NUMBER, 10])
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array = [r[2] for r in self.rawData]
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self.cursor.execute("""
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begin
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:returnValue := pkg_TestNumberArrays.TestInArrays(
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:startValue, :array);
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end;""",
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returnValue = returnValue,
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startValue = 6,
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array = array)
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self.assertEqual(returnValue.getvalue(), 74.75)
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def testBindNumberArrayByVar(self):
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"test binding in a number array (with arrayvar)"
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returnValue = self.cursor.var(cx_Oracle.NUMBER)
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array = self.cursor.arrayvar(cx_Oracle.NUMBER,
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[r[2] for r in self.rawData])
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self.cursor.execute("""
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begin
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:returnValue := pkg_TestNumberArrays.TestInArrays(
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:integerValue, :array);
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end;""",
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returnValue = returnValue,
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integerValue = 7,
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array = array)
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self.assertEqual(returnValue.getvalue(), 75.75)
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def testBindZeroLengthNumberArrayByVar(self):
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"test binding in a zero length number array (with arrayvar)"
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returnValue = self.cursor.var(cx_Oracle.NUMBER)
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array = self.cursor.arrayvar(cx_Oracle.NUMBER, 0)
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self.cursor.execute("""
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begin
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:returnValue := pkg_TestNumberArrays.TestInArrays(
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:integerValue, :array);
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end;""",
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returnValue = returnValue,
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integerValue = 8,
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array = array)
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self.assertEqual(returnValue.getvalue(), 8.0)
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self.assertEqual(array.getvalue(), [])
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def testBindInOutNumberArrayByVar(self):
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"test binding in/out a number array (with arrayvar)"
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array = self.cursor.arrayvar(cx_Oracle.NUMBER, 10)
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originalData = [r[2] for r in self.rawData]
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expectedData = [originalData[i - 1] * 10 for i in range(1, 6)] + \
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originalData[5:]
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array.setvalue(0, originalData)
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self.cursor.execute("""
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begin
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pkg_TestNumberArrays.TestInOutArrays(:numElems, :array);
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end;""",
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numElems = 5,
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array = array)
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self.assertEqual(array.getvalue(), expectedData)
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def testBindOutNumberArrayByVar(self):
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"test binding out a Number array (with arrayvar)"
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array = self.cursor.arrayvar(cx_Oracle.NUMBER, 6)
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expectedData = [i * 100 for i in range(1, 7)]
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self.cursor.execute("""
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begin
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pkg_TestNumberArrays.TestOutArrays(:numElems, :array);
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end;""",
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numElems = 6,
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array = array)
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self.assertEqual(array.getvalue(), expectedData)
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def testBindOutSetInputSizes(self):
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"test binding out with set input sizes defined"
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vars = self.cursor.setinputsizes(value = cx_Oracle.NUMBER)
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self.cursor.execute("""
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begin
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:value := 5;
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end;""")
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self.assertEqual(vars["value"].getvalue(), 5)
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def testBindInOutSetInputSizes(self):
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"test binding in/out with set input sizes defined"
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vars = self.cursor.setinputsizes(value = cx_Oracle.NUMBER)
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self.cursor.execute("""
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begin
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:value := :value + 5;
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end;""",
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value = 1.25)
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self.assertEqual(vars["value"].getvalue(), 6.25)
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def testBindOutVar(self):
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"test binding out with cursor.var() method"
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var = self.cursor.var(cx_Oracle.NUMBER)
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self.cursor.execute("""
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begin
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:value := 5;
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end;""",
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value = var)
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self.assertEqual(var.getvalue(), 5)
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def testBindInOutVarDirectSet(self):
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"test binding in/out with cursor.var() method"
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var = self.cursor.var(cx_Oracle.NUMBER)
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var.setvalue(0, 2.25)
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self.cursor.execute("""
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begin
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:value := :value + 5;
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end;""",
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value = var)
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self.assertEqual(var.getvalue(), 7.25)
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def testCursorDescription(self):
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"test cursor description is accurate"
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self.cursor.execute("select * from TestNumbers")
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self.assertEqual(self.cursor.description,
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[ ('INTCOL', cx_Oracle.NUMBER, 10, None, 9, 0, 0),
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('LONGINTCOL', cx_Oracle.NUMBER, 17, None, 16, 0, 0),
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('NUMBERCOL', cx_Oracle.NUMBER, 13, None, 9, 2, 0),
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('FLOATCOL', cx_Oracle.NUMBER, 127, None, 126, -127, 0),
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('UNCONSTRAINEDCOL', cx_Oracle.NUMBER, 127, None, 0, -127, 0),
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('NULLABLECOL', cx_Oracle.NUMBER, 39, None, 38, 0, 1) ])
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def testFetchAll(self):
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"test that fetching all of the data returns the correct results"
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self.cursor.execute("select * From TestNumbers order by IntCol")
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self.assertEqual(self.cursor.fetchall(), self.rawData)
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self.assertEqual(self.cursor.fetchall(), [])
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def testFetchMany(self):
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"test that fetching data in chunks returns the correct results"
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self.cursor.execute("select * From TestNumbers order by IntCol")
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self.assertEqual(self.cursor.fetchmany(3), self.rawData[0:3])
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self.assertEqual(self.cursor.fetchmany(2), self.rawData[3:5])
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self.assertEqual(self.cursor.fetchmany(4), self.rawData[5:9])
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self.assertEqual(self.cursor.fetchmany(3), self.rawData[9:])
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self.assertEqual(self.cursor.fetchmany(3), [])
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def testFetchOne(self):
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"test that fetching a single row returns the correct results"
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self.cursor.execute("""
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select *
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from TestNumbers
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where IntCol in (3, 4)
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order by IntCol""")
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self.assertEqual(self.cursor.fetchone(), self.dataByKey[3])
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self.assertEqual(self.cursor.fetchone(), self.dataByKey[4])
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self.assertEqual(self.cursor.fetchone(), None)
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def testReturnAsLong(self):
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"test that fetching a long integer returns such in Python"
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self.cursor.execute("""
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select NullableCol
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from TestNumbers
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where IntCol = 9""")
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col, = self.cursor.fetchone()
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self.assertTrue(isinstance(col, long), "long integer not returned")
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def testReturnConstantFloat(self):
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"test that fetching a floating point number returns such in Python"
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self.cursor.execute("select 1.25 from dual")
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result, = self.cursor.fetchone()
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self.assertEqual(result, 1.25)
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def testReturnConstantInteger(self):
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"test that fetching an integer returns such in Python"
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self.cursor.execute("select 148 from dual")
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result, = self.cursor.fetchone()
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self.assertEqual(result, 148)
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self.assertTrue(isinstance(result, int), "integer not returned")
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def testAcceptableBoundaryNumbers(self):
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"test that acceptable boundary numbers are handled properly"
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inValues = [decimal.Decimal("9.99999999999999e+125"),
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decimal.Decimal("-9.99999999999999e+125"), 0.0, 1e-130,
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-1e-130]
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outValues = [int("9" * 15 + "0" * 111), -int("9" * 15 + "0" * 111),
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0, decimal.Decimal("1e-130"), decimal.Decimal("-1e-130")]
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for inValue, outValue in zip(inValues, outValues):
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self.cursor.execute("select :1 from dual", (inValue,))
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result, = self.cursor.fetchone()
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self.assertEqual(result, outValue)
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def testUnacceptableBoundaryNumbers(self):
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"test that unacceptable boundary numbers are rejected"
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inValues = [1e126, -1e126, float("inf"), float("-inf"),
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float("NaN"), decimal.Decimal("1e126"),
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decimal.Decimal("-1e126"), decimal.Decimal("inf"),
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decimal.Decimal("-inf"), decimal.Decimal("NaN")]
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noRepErr = "DPI-1044: value cannot be represented as an Oracle number"
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invalidErr = ""
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expectedErrors = [noRepErr, noRepErr, invalidErr, invalidErr,
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invalidErr, noRepErr, noRepErr, invalidErr, invalidErr,
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invalidErr]
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for inValue, error in zip(inValues, expectedErrors):
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self.assertRaisesRegexp(cx_Oracle.DatabaseError, error,
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self.cursor.execute, "select :1 from dual", (inValue,))
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def testReturnFloatFromDivision(self):
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"test that fetching the result of division returns a float"
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self.cursor.execute("""
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select IntCol / 7
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from TestNumbers
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where IntCol = 1""")
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result, = self.cursor.fetchone()
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self.assertAlmostEqual(result,
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decimal.Decimal("1") / decimal.Decimal("7"))
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def testStringFormat(self):
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"test that string format is returned properly"
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var = self.cursor.var(cx_Oracle.NUMBER)
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self.assertEqual(str(var), "<cx_Oracle.NUMBER with value None>")
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var.setvalue(0, 4)
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self.assertEqual(str(var), "<cx_Oracle.NUMBER with value 4.0>")
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def testBindNativeFloat(self):
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"test that binding native float is possible"
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self.cursor.setinputsizes(cx_Oracle.NATIVE_FLOAT)
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self.cursor.execute("select :1 from dual", (5,))
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self.assertEqual(type(self.cursor.bindvars[0]), cx_Oracle.NATIVE_FLOAT)
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value, = self.cursor.fetchone()
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self.assertEqual(value, 5)
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self.cursor.execute("select :1 from dual", (1.5,))
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self.assertEqual(type(self.cursor.bindvars[0]), cx_Oracle.NATIVE_FLOAT)
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value, = self.cursor.fetchone()
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self.assertEqual(value, 1.5)
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self.cursor.execute("select :1 from dual", (decimal.Decimal("NaN"),))
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self.assertEqual(type(self.cursor.bindvars[0]), cx_Oracle.NATIVE_FLOAT)
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value, = self.cursor.fetchone()
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self.assertEqual(str(value), str(float("NaN")))
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