1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
# flake8: noqa
# fmt: off
""" Python DB API 2.0 driver Two Phase Commit compliance test suite.
"""
import unittest
from typing import Any
class TwoPhaseCommitTests(unittest.TestCase):
driver: Any = None
def connect(self):
"""Make a database connection."""
raise NotImplementedError
_last_id = 0
_global_id_prefix = "dbapi20_tpc:"
def make_xid(self, con):
id = TwoPhaseCommitTests._last_id
TwoPhaseCommitTests._last_id += 1
return con.xid(42, f"{self._global_id_prefix}{id}", "qualifier")
def test_xid(self):
con = self.connect()
try:
try:
xid = con.xid(42, "global", "bqual")
except self.driver.NotSupportedError:
self.fail("Driver does not support transaction IDs.")
self.assertEquals(xid[0], 42)
self.assertEquals(xid[1], "global")
self.assertEquals(xid[2], "bqual")
# Try some extremes for the transaction ID:
xid = con.xid(0, "", "")
self.assertEquals(tuple(xid), (0, "", ""))
xid = con.xid(0x7fffffff, "a" * 64, "b" * 64)
self.assertEquals(tuple(xid), (0x7fffffff, "a" * 64, "b" * 64))
finally:
con.close()
def test_tpc_begin(self):
con = self.connect()
try:
xid = self.make_xid(con)
try:
con.tpc_begin(xid)
except self.driver.NotSupportedError:
self.fail("Driver does not support tpc_begin()")
finally:
con.close()
def test_tpc_commit_without_prepare(self):
con = self.connect()
try:
xid = self.make_xid(con)
con.tpc_begin(xid)
cursor = con.cursor()
cursor.execute("SELECT 1")
con.tpc_commit()
finally:
con.close()
def test_tpc_rollback_without_prepare(self):
con = self.connect()
try:
xid = self.make_xid(con)
con.tpc_begin(xid)
cursor = con.cursor()
cursor.execute("SELECT 1")
con.tpc_rollback()
finally:
con.close()
def test_tpc_commit_with_prepare(self):
con = self.connect()
try:
xid = self.make_xid(con)
con.tpc_begin(xid)
cursor = con.cursor()
cursor.execute("SELECT 1")
con.tpc_prepare()
con.tpc_commit()
finally:
con.close()
def test_tpc_rollback_with_prepare(self):
con = self.connect()
try:
xid = self.make_xid(con)
con.tpc_begin(xid)
cursor = con.cursor()
cursor.execute("SELECT 1")
con.tpc_prepare()
con.tpc_rollback()
finally:
con.close()
def test_tpc_begin_in_transaction_fails(self):
con = self.connect()
try:
xid = self.make_xid(con)
cursor = con.cursor()
cursor.execute("SELECT 1")
self.assertRaises(self.driver.ProgrammingError,
con.tpc_begin, xid)
finally:
con.close()
def test_tpc_begin_in_tpc_transaction_fails(self):
con = self.connect()
try:
xid = self.make_xid(con)
cursor = con.cursor()
cursor.execute("SELECT 1")
self.assertRaises(self.driver.ProgrammingError,
con.tpc_begin, xid)
finally:
con.close()
def test_commit_in_tpc_fails(self):
# calling commit() within a TPC transaction fails with
# ProgrammingError.
con = self.connect()
try:
xid = self.make_xid(con)
con.tpc_begin(xid)
self.assertRaises(self.driver.ProgrammingError, con.commit)
finally:
con.close()
def test_rollback_in_tpc_fails(self):
# calling rollback() within a TPC transaction fails with
# ProgrammingError.
con = self.connect()
try:
xid = self.make_xid(con)
con.tpc_begin(xid)
self.assertRaises(self.driver.ProgrammingError, con.rollback)
finally:
con.close()
|
