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#------------------------------------------------------------------------------
# Copyright (c) 2016, 2017, 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 cursor objects."""
import cx_Oracle
import decimal
import sys
class TestCursor(BaseTestCase):
def testCreateScrollableCursor(self):
"""test creating a scrollable cursor"""
cursor = self.connection.cursor()
self.assertEqual(cursor.scrollable, False)
cursor = self.connection.cursor(True)
self.assertEqual(cursor.scrollable, True)
cursor = self.connection.cursor(scrollable = True)
self.assertEqual(cursor.scrollable, True)
cursor.scrollable = False
self.assertEqual(cursor.scrollable, False)
def testExecuteNoArgs(self):
"""test executing a statement without any arguments"""
result = self.cursor.execute("begin null; end;")
self.assertEqual(result, None)
def testExecuteNoStatementWithArgs(self):
"""test executing a None statement with bind variables"""
self.assertRaises(cx_Oracle.ProgrammingError, self.cursor.execute,
None, x = 5)
def testExecuteEmptyKeywordArgs(self):
"""test executing a statement with args and empty keyword args"""
simpleVar = self.cursor.var(cx_Oracle.NUMBER)
args = [simpleVar]
kwArgs = {}
result = self.cursor.execute("begin :1 := 25; end;", args, **kwArgs)
self.assertEqual(result, None)
self.assertEqual(simpleVar.getvalue(), 25)
def testExecuteKeywordArgs(self):
"""test executing a statement with keyword arguments"""
simpleVar = self.cursor.var(cx_Oracle.NUMBER)
result = self.cursor.execute("begin :value := 5; end;",
value = simpleVar)
self.assertEqual(result, None)
self.assertEqual(simpleVar.getvalue(), 5)
def testExecuteDictionaryArg(self):
"""test executing a statement with a dictionary argument"""
simpleVar = self.cursor.var(cx_Oracle.NUMBER)
dictArg = { "value" : simpleVar }
result = self.cursor.execute("begin :value := 10; end;", dictArg)
self.assertEqual(result, None)
self.assertEqual(simpleVar.getvalue(), 10)
dictArg = { u"value" : simpleVar }
result = self.cursor.execute("begin :value := 25; end;", dictArg)
self.assertEqual(result, None)
self.assertEqual(simpleVar.getvalue(), 25)
def testExecuteMultipleMethod(self):
"""test executing a statement with both a dict arg and keyword args"""
simpleVar = self.cursor.var(cx_Oracle.NUMBER)
dictArg = { "value" : simpleVar }
self.assertRaises(cx_Oracle.InterfaceError, self.cursor.execute,
"begin :value := 15; end;", dictArg, value = simpleVar)
def testExecuteAndModifyArraySize(self):
"""test executing a statement and then changing the array size"""
self.cursor.execute("select IntCol from TestNumbers")
self.cursor.arraysize = 20
self.assertEqual(len(self.cursor.fetchall()), 10)
def testCallProc(self):
"""test executing a stored procedure"""
var = self.cursor.var(cx_Oracle.NUMBER)
results = self.cursor.callproc("proc_Test", ("hi", 5, var))
self.assertEqual(results, ["hi", 10, 2.0])
def testCallProcNoArgs(self):
"""test executing a stored procedure without any arguments"""
results = self.cursor.callproc(u"proc_TestNoArgs")
self.assertEqual(results, [])
def testCallFunc(self):
"""test executing a stored function"""
results = self.cursor.callfunc(u"func_Test", cx_Oracle.NUMBER,
(u"hi", 5))
self.assertEqual(results, 7)
def testCallFuncNoArgs(self):
"""test executing a stored function without any arguments"""
results = self.cursor.callfunc("func_TestNoArgs", cx_Oracle.NUMBER)
self.assertEqual(results, 712)
def testCallFuncNegative(self):
"""test executing a stored function with wrong parameters"""
funcName = "func_Test"
self.assertRaises(TypeError, self.cursor.callfunc, cx_Oracle.NUMBER,
funcName, ("hi", 5))
self.assertRaises(cx_Oracle.DatabaseError, self.cursor.callfunc,
funcName, cx_Oracle.NUMBER, ("hi", 5, 7))
self.assertRaises(TypeError, self.cursor.callfunc, funcName,
cx_Oracle.NUMBER, "hi", 7)
self.assertRaises(cx_Oracle.DatabaseError, self.cursor.callfunc,
funcName, cx_Oracle.NUMBER, [5, "hi"])
self.assertRaises(cx_Oracle.DatabaseError, self.cursor.callfunc,
funcName, cx_Oracle.NUMBER)
self.assertRaises(TypeError, self.cursor.callfunc, funcName,
cx_Oracle.NUMBER, 5)
def testExecuteManyByName(self):
"""test executing a statement multiple times (named args)"""
self.cursor.execute("truncate table TestTempTable")
rows = [ { u"value" : n } for n in range(250) ]
self.cursor.arraysize = 100
statement = "insert into TestTempTable (IntCol) values (:value)"
self.cursor.executemany(statement, rows)
self.connection.commit()
self.cursor.execute("select count(*) from TestTempTable")
count, = self.cursor.fetchone()
self.assertEqual(count, len(rows))
def testExecuteManyByPosition(self):
"""test executing a statement multiple times (positional args)"""
self.cursor.execute("truncate table TestTempTable")
rows = [ [n] for n in range(230) ]
self.cursor.arraysize = 100
statement = "insert into TestTempTable (IntCol) values (:1)"
self.cursor.executemany(statement, rows)
self.connection.commit()
self.cursor.execute("select count(*) from TestTempTable")
count, = self.cursor.fetchone()
self.assertEqual(count, len(rows))
def testExecuteManyWithPrepare(self):
"""test executing a statement multiple times (with prepare)"""
self.cursor.execute("truncate table TestTempTable")
rows = [ [n] for n in range(225) ]
self.cursor.arraysize = 100
statement = "insert into TestTempTable (IntCol) values (:1)"
self.cursor.prepare(statement)
self.cursor.executemany(None, rows)
self.connection.commit()
self.cursor.execute("select count(*) from TestTempTable")
count, = self.cursor.fetchone()
self.assertEqual(count, len(rows))
def testExecuteManyWithRebind(self):
"""test executing a statement multiple times (with rebind)"""
self.cursor.execute("truncate table TestTempTable")
rows = [ [n] for n in range(235) ]
self.cursor.arraysize = 100
statement = "insert into TestTempTable (IntCol) values (:1)"
self.cursor.executemany(statement, rows[:50])
self.cursor.executemany(statement, rows[50:])
self.connection.commit()
self.cursor.execute("select count(*) from TestTempTable")
count, = self.cursor.fetchone()
self.assertEqual(count, len(rows))
def testExecuteManyWithInputSizesWrong(self):
cursor = self.connection.cursor()
cursor.setinputsizes(cx_Oracle.NUMBER)
data = [[decimal.Decimal("25.8")], [decimal.Decimal("30.0")]]
cursor.executemany("declare t number; begin t := :1; end;", data)
def testExecuteManyWithResize(self):
"""test executing a statement multiple times (with resize)"""
self.cursor.execute("truncate table TestTempTable")
rows = [ ( 1, "First" ),
( 2, "Second" ),
( 3, "Third" ),
( 4, "Fourth" ),
( 5, "Fifth" ),
( 6, "Sixth" ),
( 7, "Seventh and the longest one" ) ]
sql = "insert into TestTempTable (IntCol, StringCol) values (:1, :2)"
self.cursor.executemany(sql, rows)
self.cursor.execute("""
select IntCol, StringCol
from TestTempTable
order by IntCol""")
fetchedRows = self.cursor.fetchall()
self.assertEqual(fetchedRows, rows)
def testExecuteManyWithExecption(self):
"""test executing a statement multiple times (with exception)"""
self.cursor.execute("truncate table TestTempTable")
rows = [ { "value" : n } for n in (1, 2, 3, 2, 5) ]
statement = "insert into TestTempTable (IntCol) values (:value)"
self.assertRaises(cx_Oracle.DatabaseError, self.cursor.executemany,
statement, rows)
self.assertEqual(self.cursor.rowcount, 3)
def testExecuteManyWithInvalidParameters(self):
"test calling executemany() with invalid parameters"
self.assertRaises(TypeError, self.cursor.executemany,
"insert into TestTempTable values (:1, :2)",
"These are not valid parameters")
def testExecuteManyNoParameters(self):
"test calling executemany() without any bind parameters"
numRows = 5
self.cursor.execute("truncate table TestTempTable")
self.cursor.executemany("""
declare
t_Id number;
begin
select nvl(count(*), 0) + 1 into t_Id
from TestTempTable;
insert into TestTempTable
values (t_Id, 'Test String ' || t_Id);
end;""", numRows)
self.cursor.execute("select count(*) from TestTempTable")
count, = self.cursor.fetchone()
self.assertEqual(count, numRows)
def testExecuteManyBoundEarlier(self):
"test calling executemany() with binds performed earlier"
numRows = 9
self.cursor.execute("truncate table TestTempTable")
var = self.cursor.var(int, arraysize = numRows)
self.cursor.setinputsizes(var)
self.cursor.executemany("""
declare
t_Id number;
begin
select nvl(count(*), 0) + 1 into t_Id
from TestTempTable;
insert into TestTempTable
values (t_Id, 'Test String ' || t_Id);
select sum(IntCol) into :1
from TestTempTable;
end;""", numRows)
expectedData = [1, 3, 6, 10, 15, 21, 28, 36, 45]
self.assertEqual(var.values, expectedData)
def testPrepare(self):
"""test preparing a statement and executing it multiple times"""
self.assertEqual(self.cursor.statement, None)
statement = "begin :value := :value + 5; end;"
self.cursor.prepare(statement)
var = self.cursor.var(cx_Oracle.NUMBER)
self.assertEqual(self.cursor.statement, statement)
var.setvalue(0, 2)
self.cursor.execute(None, value = var)
self.assertEqual(var.getvalue(), 7)
self.cursor.execute(None, value = var)
self.assertEqual(var.getvalue(), 12)
self.cursor.execute("begin :value2 := 3; end;", value2 = var)
self.assertEqual(var.getvalue(), 3)
def testExceptionOnClose(self):
"confirm an exception is raised after closing a cursor"
self.cursor.close()
self.assertRaises(cx_Oracle.InterfaceError, self.cursor.execute,
"select 1 from dual")
def testIterators(self):
"""test iterators"""
self.cursor.execute("""
select IntCol
from TestNumbers
where IntCol between 1 and 3
order by IntCol""")
rows = []
for row in self.cursor:
rows.append(row[0])
self.assertEqual(rows, [1, 2, 3])
def testIteratorsInterrupted(self):
"""test iterators (with intermediate execute)"""
self.cursor.execute("truncate table TestTempTable")
self.cursor.execute("""
select IntCol
from TestNumbers
where IntCol between 1 and 3
order by IntCol""")
testIter = iter(self.cursor)
if sys.version_info[0] >= 3:
value, = next(testIter)
else:
value, = testIter.next()
self.cursor.execute("insert into TestTempTable (IntCol) values (1)")
if sys.version_info[0] >= 3:
self.assertRaises(cx_Oracle.InterfaceError, next, testIter)
else:
self.assertRaises(cx_Oracle.InterfaceError, testIter.next)
def testBindNames(self):
"""test that bindnames() works correctly."""
self.assertRaises(cx_Oracle.ProgrammingError, self.cursor.bindnames)
self.cursor.prepare(u"begin null; end;")
self.assertEqual(self.cursor.bindnames(), [])
self.cursor.prepare("begin :retval := :inval + 5; end;")
self.assertEqual(self.cursor.bindnames(), ["RETVAL", "INVAL"])
self.cursor.prepare("begin :retval := :a * :a + :b * :b; end;")
self.assertEqual(self.cursor.bindnames(), ["RETVAL", "A", "B"])
self.cursor.prepare("begin :a := :b + :c + :d + :e + :f + :g + " + \
":h + :i + :j + :k + :l; end;")
self.assertEqual(self.cursor.bindnames(),
["A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L"])
self.cursor.prepare("select :a * :a + :b * :b from dual")
self.assertEqual(self.cursor.bindnames(), ["A", "B"])
def testBadPrepare(self):
"""test that subsequent executes succeed after bad prepare"""
self.assertRaises(cx_Oracle.DatabaseError,
self.cursor.execute,
"begin raise_application_error(-20000, 'this); end;")
self.cursor.execute("begin null; end;")
def testBadExecute(self):
"""test that subsequent fetches fail after bad execute"""
self.assertRaises(cx_Oracle.DatabaseError,
self.cursor.execute, "select y from dual")
self.assertRaises(cx_Oracle.InterfaceError,
self.cursor.fetchall)
def testScrollAbsoluteExceptionAfter(self):
"""test scrolling absolute yields an exception (after result set)"""
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = self.cursor.arraysize
cursor.execute("""
select NumberCol
from TestNumbers
order by IntCol""")
self.assertRaises(cx_Oracle.DatabaseError, cursor.scroll, 12,
"absolute")
def testScrollAbsoluteInBuffer(self):
"""test scrolling absolute (when in buffers)"""
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = self.cursor.arraysize
cursor.execute("""
select NumberCol
from TestNumbers
order by IntCol""")
cursor.fetchmany()
self.assertTrue(cursor.arraysize > 1,
"array size must exceed 1 for this test to work correctly")
cursor.scroll(1, mode = "absolute")
row = cursor.fetchone()
self.assertEqual(row[0], 1.25)
self.assertEqual(cursor.rowcount, 1)
def testScrollAbsoluteNotInBuffer(self):
"""test scrolling absolute (when not in buffers)"""
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = self.cursor.arraysize
cursor.execute("""
select NumberCol
from TestNumbers
order by IntCol""")
cursor.scroll(6, mode = "absolute")
row = cursor.fetchone()
self.assertEqual(row[0], 7.5)
self.assertEqual(cursor.rowcount, 6)
def testScrollFirstInBuffer(self):
"""test scrolling to first row in result set (when in buffers)"""
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = self.cursor.arraysize
cursor.execute("""
select NumberCol
from TestNumbers
order by IntCol""")
cursor.fetchmany()
cursor.scroll(mode = "first")
row = cursor.fetchone()
self.assertEqual(row[0], 1.25)
self.assertEqual(cursor.rowcount, 1)
def testScrollFirstNotInBuffer(self):
"""test scrolling to first row in result set (when not in buffers)"""
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = self.cursor.arraysize
cursor.execute("""
select NumberCol
from TestNumbers
order by IntCol""")
cursor.fetchmany()
cursor.fetchmany()
cursor.scroll(mode = "first")
row = cursor.fetchone()
self.assertEqual(row[0], 1.25)
self.assertEqual(cursor.rowcount, 1)
def testScrollLast(self):
"""test scrolling to last row in result set"""
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = self.cursor.arraysize
cursor.execute("""
select NumberCol
from TestNumbers
order by IntCol""")
cursor.scroll(mode = "last")
row = cursor.fetchone()
self.assertEqual(row[0], 12.5)
self.assertEqual(cursor.rowcount, 10)
def testScrollRelativeExceptionAfter(self):
"""test scrolling relative yields an exception (after result set)"""
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = self.cursor.arraysize
cursor.execute("""
select NumberCol
from TestNumbers
order by IntCol""")
self.assertRaises(cx_Oracle.DatabaseError, cursor.scroll, 15)
def testScrollRelativeExceptionBefore(self):
"""test scrolling relative yields an exception (before result set)"""
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = self.cursor.arraysize
cursor.execute("""
select NumberCol
from TestNumbers
order by IntCol""")
self.assertRaises(cx_Oracle.DatabaseError, cursor.scroll, -5)
def testScrollRelativeInBuffer(self):
"""test scrolling relative (when in buffers)"""
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = self.cursor.arraysize
cursor.execute("""
select NumberCol
from TestNumbers
order by IntCol""")
cursor.fetchmany()
self.assertTrue(cursor.arraysize > 1,
"array size must exceed 1 for this test to work correctly")
cursor.scroll(2 - cursor.rowcount)
row = cursor.fetchone()
self.assertEqual(row[0], 2.5)
self.assertEqual(cursor.rowcount, 2)
def testScrollRelativeNotInBuffer(self):
"""test scrolling relative (when not in buffers)"""
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = self.cursor.arraysize
cursor.execute("""
select NumberCol
from TestNumbers
order by IntCol""")
cursor.fetchmany()
cursor.fetchmany()
self.assertTrue(cursor.arraysize > 1,
"array size must exceed 2 for this test to work correctly")
cursor.scroll(3 - cursor.rowcount)
row = cursor.fetchone()
self.assertEqual(row[0], 3.75)
self.assertEqual(cursor.rowcount, 3)
def testScrollNoRows(self):
"""test scrolling when there are no rows"""
self.cursor.execute("truncate table TestTempTable")
cursor = self.connection.cursor(scrollable = True)
cursor.execute("select * from TestTempTable")
cursor.scroll(mode = "last")
self.assertEqual(cursor.fetchall(), [])
cursor.scroll(mode = "first")
self.assertEqual(cursor.fetchall(), [])
self.assertRaises(cx_Oracle.DatabaseError, cursor.scroll, 1,
mode = "absolute")
def testScrollDifferingArrayAndFetchSizes(self):
"""test scrolling with differing array sizes and fetch array sizes"""
self.cursor.execute("truncate table TestTempTable")
for i in range(30):
self.cursor.execute("insert into TestTempTable values (:1, null)",
(i + 1,))
for arraySize in range(1, 6):
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = arraySize
cursor.execute("select IntCol from TestTempTable order by IntCol")
for numRows in range(1, arraySize + 1):
cursor.scroll(15, "absolute")
rows = cursor.fetchmany(numRows)
self.assertEqual(rows[0][0], 15)
self.assertEqual(cursor.rowcount, 15 + numRows - 1)
cursor.scroll(9)
rows = cursor.fetchmany(numRows)
numRowsFetched = len(rows)
self.assertEqual(rows[0][0], 15 + numRows + 8)
self.assertEqual(cursor.rowcount,
15 + numRows + numRowsFetched + 7)
cursor.scroll(-12)
rows = cursor.fetchmany(numRows)
self.assertEqual(rows[0][0], 15 + numRows + numRowsFetched - 5)
self.assertEqual(cursor.rowcount,
15 + numRows + numRowsFetched + numRows - 6)
def testSetInputSizesNegative(self):
"test cursor.setinputsizes() with invalid parameters"
val = decimal.Decimal(5)
self.assertRaises(cx_Oracle.InterfaceError,
self.cursor.setinputsizes, val, x = val)
self.assertRaises(TypeError, self.cursor.setinputsizes, val)
def testSetInputSizesNoParameters(self):
"test setting input sizes without any parameters"
self.cursor.setinputsizes()
self.cursor.execute("select :val from dual", val = "Test Value")
self.assertEqual(self.cursor.fetchall(), [("Test Value",)])
def testSetInputSizesByPosition(self):
"""test setting input sizes with positional args"""
var = self.cursor.var(cx_Oracle.STRING, 100)
self.cursor.setinputsizes(None, 5, None, 10, None, cx_Oracle.NUMBER)
self.cursor.execute("""
begin
:1 := :2 || to_char(:3) || :4 || to_char(:5) || to_char(:6);
end;""", [var, 'test_', 5, '_second_', 3, 7])
self.assertEqual(var.getvalue(), u"test_5_second_37")
def testStringFormat(self):
"""test string format of cursor"""
formatString = "<cx_Oracle.Cursor on <cx_Oracle.Connection to %s@%s>>"
expectedValue = formatString % (USERNAME, TNSENTRY)
self.assertEqual(str(self.cursor), expectedValue)
def testCursorFetchRaw(self):
"""test cursor.fetchraw()"""
cursor = self.connection.cursor()
cursor.arraysize = 25
cursor.execute("select LongIntCol from TestNumbers order by IntCol")
self.assertEqual(cursor.fetchraw(), 10)
self.assertEqual(cursor.fetchvars[0].getvalue(), 38)
def testParse(self):
"""test parsing statements"""
sql = "select LongIntCol from TestNumbers where IntCol = :val"
self.cursor.parse(sql)
self.assertEqual(self.cursor.statement, sql)
self.assertEqual(self.cursor.description,
[ ('LONGINTCOL', cx_Oracle.NUMBER, 17, None, 16, 0, 0) ])
def testSetOutputSize(self):
"test cursor.setoutputsize() does not fail (but does nothing)"
self.cursor.setoutputsize(100, 2)
def testVarNegative(self):
"test cursor.var() with invalid parameters"
self.assertRaises(TypeError, self.cursor.var, 5)
def testArrayVarNegative(self):
"test cursor.arrayvar() with invalid parameters"
self.assertRaises(TypeError, self.cursor.arrayvar, 5, 1)
def testBooleanWithoutPlsql(self):
"test binding boolean data without the use of PL/SQL"
self.cursor.execute("truncate table TestTempTable")
self.cursor.execute("insert into TestTempTable values (:1, :2)",
(False, "Value should be 0"))
self.cursor.execute("insert into TestTempTable values (:1, :2)",
(True, "Value should be 1"))
self.cursor.execute("select * from TestTempTable order by IntCol")
self.assertEqual(self.cursor.fetchall(),
[ (0, "Value should be 0"), (1, "Value should be 1") ])
def testAsContextManager(self):
"test using a cursor as a context manager"
with self.cursor as cursor:
cursor.execute("truncate table TestTempTable")
cursor.execute("select count(*) from TestTempTable")
count, = cursor.fetchone()
self.assertEqual(count, 0)
self.assertRaises(cx_Oracle.InterfaceError, self.cursor.close)
def testQueryRowCount(self):
"test that the rowcount attribute is reset to zero on query execute"
sql = "select * from dual where 1 = :s"
self.cursor.execute(sql, [0])
self.cursor.fetchone()
self.assertEqual(self.cursor.rowcount, 0)
self.cursor.execute(sql, [1])
self.cursor.fetchone()
self.assertEqual(self.cursor.rowcount, 1)
self.cursor.execute(sql, [1])
self.cursor.fetchone()
self.assertEqual(self.cursor.rowcount, 1)
self.cursor.execute(sql, [0])
self.cursor.fetchone()
self.assertEqual(self.cursor.rowcount, 0)
def testVarTypeNameNone(self):
"test that the typename attribute can be passed a value of None"
valueToSet = 5
var = self.cursor.var(int, typename=None)
var.setvalue(0, valueToSet)
self.assertEqual(var.getvalue(), valueToSet)
def testVarTypeWithObjectType(self):
"test that an object type can be used as type in cursor.var()"
objType = self.connection.gettype("UDT_OBJECT")
var = self.cursor.var(objType)
self.cursor.callproc("pkg_TestBindObject.BindObjectOut",
(28, "Bind obj out", var))
obj = var.getvalue()
result = self.cursor.callfunc("pkg_TestBindObject.GetStringRep", str,
(obj,))
self.assertEqual(result,
"udt_Object(28, 'Bind obj out', null, null, null, null, null)")
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