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[3.10] bpo-43853: Expand test suite for SQLite UDF's (GH-27642) (GH-31030)

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* [3.10] bpo-43853: Expand test suite for SQLite UDF's (GH-27642).
(cherry picked from commit 3eb3b4f270)

Co-authored-by: Erlend Egeberg Aasland <erlend.aasland@innova.no>

* Fix test_func_return_too_large_int

GH-27613 (bpo 44839) was not backported, so exceptions differ between
main (3.11) and older versions.
This commit is contained in:
Erlend Egeberg Aasland 2022-02-21 01:13:04 +01:00 • committed by GitHub
parent f1916cde24
commit ba457fe6f8
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3 changed files with 79 additions and 66 deletions
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128
Lib/sqlite3/test/userfunctions.py
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@ -23,9 +23,11 @@
import unittest
import unittest.mock
import gc
import sqlite3 as sqlite
from test.support import gc_collect
def func_returntext():
return "foo"
def func_returntextwithnull():
@ -45,22 +47,6 @@ def func_returnlonglong():
def func_raiseexception():
5/0
def func_isstring(v):
return type(v) is str
def func_isint(v):
return type(v) is int
def func_isfloat(v):
return type(v) is float
def func_isnone(v):
return type(v) is type(None)
def func_isblob(v):
return isinstance(v, (bytes, memoryview))
def func_islonglong(v):
return isinstance(v, int) and v >= 1<<31
def func(*args):
return len(args)
class AggrNoStep:
def __init__(self):
pass
@ -161,15 +147,13 @@ class FunctionTests(unittest.TestCase):
self.con.create_function("returnnull", 0, func_returnnull)
self.con.create_function("returnblob", 0, func_returnblob)
self.con.create_function("returnlonglong", 0, func_returnlonglong)
self.con.create_function("returnnan", 0, lambda: float("nan"))
self.con.create_function("returntoolargeint", 0, lambda: 1 << 65)
self.con.create_function("raiseexception", 0, func_raiseexception)
self.con.create_function("isstring", 1, func_isstring)
self.con.create_function("isint", 1, func_isint)
self.con.create_function("isfloat", 1, func_isfloat)
self.con.create_function("isnone", 1, func_isnone)
self.con.create_function("isblob", 1, func_isblob)
self.con.create_function("islonglong", 1, func_islonglong)
self.con.create_function("spam", -1, func)
self.con.create_function("isblob", 1, lambda x: isinstance(x, bytes))
self.con.create_function("isnone", 1, lambda x: x is None)
self.con.create_function("spam", -1, lambda *x: len(x))
self.con.execute("create table test(t text)")
def tearDown(self):
@ -246,6 +230,16 @@ class FunctionTests(unittest.TestCase):
val = cur.fetchone()[0]
self.assertEqual(val, 1<<31)
def test_func_return_nan(self):
cur = self.con.cursor()
cur.execute("select returnnan()")
self.assertIsNone(cur.fetchone()[0])
def test_func_return_too_large_int(self):
cur = self.con.cursor()
with self.assertRaises(sqlite.OperationalError):
self.con.execute("select returntoolargeint()")
def test_func_exception(self):
cur = self.con.cursor()
with self.assertRaises(sqlite.OperationalError) as cm:
@ -253,44 +247,6 @@ class FunctionTests(unittest.TestCase):
cur.fetchone()
self.assertEqual(str(cm.exception), 'user-defined function raised exception')
def test_param_string(self):
cur = self.con.cursor()
for text in ["foo", str()]:
with self.subTest(text=text):
cur.execute("select isstring(?)", (text,))
val = cur.fetchone()[0]
self.assertEqual(val, 1)
def test_param_int(self):
cur = self.con.cursor()
cur.execute("select isint(?)", (42,))
val = cur.fetchone()[0]
self.assertEqual(val, 1)
def test_param_float(self):
cur = self.con.cursor()
cur.execute("select isfloat(?)", (3.14,))
val = cur.fetchone()[0]
self.assertEqual(val, 1)
def test_param_none(self):
cur = self.con.cursor()
cur.execute("select isnone(?)", (None,))
val = cur.fetchone()[0]
self.assertEqual(val, 1)
def test_param_blob(self):
cur = self.con.cursor()
cur.execute("select isblob(?)", (memoryview(b"blob"),))
val = cur.fetchone()[0]
self.assertEqual(val, 1)
def test_param_long_long(self):
cur = self.con.cursor()
cur.execute("select islonglong(?)", (1<<42,))
val = cur.fetchone()[0]
self.assertEqual(val, 1)
def test_any_arguments(self):
cur = self.con.cursor()
cur.execute("select spam(?, ?)", (1, 2))
@ -301,6 +257,52 @@ class FunctionTests(unittest.TestCase):
cur = self.con.execute("select isblob(x'')")
self.assertTrue(cur.fetchone()[0])
def test_nan_float(self):
cur = self.con.execute("select isnone(?)", (float("nan"),))
# SQLite has no concept of nan; it is converted to NULL
self.assertTrue(cur.fetchone()[0])
def test_too_large_int(self):
err = "Python int too large to convert to SQLite INTEGER"
self.assertRaisesRegex(OverflowError, err, self.con.execute,
"select spam(?)", (1 << 65,))
def test_non_contiguous_blob(self):
self.assertRaisesRegex(ValueError, "could not convert BLOB to buffer",
self.con.execute, "select spam(?)",
(memoryview(b"blob")[::2],))
def test_param_surrogates(self):
self.assertRaisesRegex(UnicodeEncodeError, "surrogates not allowed",
self.con.execute, "select spam(?)",
("\ud803\ude6d",))
def test_func_params(self):
results = []
def append_result(arg):
results.append((arg, type(arg)))
self.con.create_function("test_params", 1, append_result)
dataset = [
(42, int),
(-1, int),
(1234567890123456789, int),
(4611686018427387905, int), # 63-bit int with non-zero low bits
(3.14, float),
(float('inf'), float),
("text", str),
("1\x002", str),
("\u02e2q\u02e1\u2071\u1d57\u1d49", str),
(b"blob", bytes),
(bytearray(range(2)), bytes),
(memoryview(b"blob"), bytes),
(None, type(None)),
]
for val, _ in dataset:
cur = self.con.execute("select test_params(?)", (val,))
cur.fetchone()
self.assertEqual(dataset, results)
# Regarding deterministic functions:
#
# Between 3.8.3 and 3.15.0, deterministic functions were only used to
@ -356,7 +358,7 @@ class FunctionTests(unittest.TestCase):
y.append(y)
del x,y
gc.collect()
gc_collect()
class AggregateTests(unittest.TestCase):
def setUp(self):