pg8000/tests/test_copy.py at master · mfenniak/pg8000 · GitHub

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
import unittest
import pg8000
from connection_settings import db_connect
from six import b, BytesIO, u, iteritems
from sys import exc_info


class Tests(unittest.TestCase):
    def setUp(self):
        self.db = pg8000.connect(**db_connect)
        try:
            cursor = self.db.cursor()
            try:
                cursor = self.db.cursor()
                cursor.execute("DROP TABLE t1")
            except pg8000.DatabaseError:
                e = exc_info()[1]
                # the only acceptable error is:
                msg = e.args[0]
                code = msg['C']
                self.assertEqual(
                    code, '42P01',  # table does not exist
                    "incorrect error for drop table: " + str(msg))
                self.db.rollback()
            cursor.execute(
                "CREATE TEMPORARY TABLE t1 (f1 int primary key, "
                "f2 int not null, f3 varchar(50) null)")
        finally:
            cursor.close()

    def tearDown(self):
        self.db.close()

    def testCopyToWithTable(self):
        try:
            cursor = self.db.cursor()
            cursor.execute(
                "INSERT INTO t1 (f1, f2, f3) VALUES (%s, %s, %s)", (1, 1, 1))
            cursor.execute(
                "INSERT INTO t1 (f1, f2, f3) VALUES (%s, %s, %s)", (2, 2, 2))
            cursor.execute(
                "INSERT INTO t1 (f1, f2, f3) VALUES (%s, %s, %s)", (3, 3, 3))

            stream = BytesIO()
            cursor.execute("copy t1 to stdout", stream=stream)
            self.assertEqual(
                stream.getvalue(), b("1\t1\t1\n2\t2\t2\n3\t3\t3\n"))
            self.assertEqual(cursor.rowcount, 3)
            self.db.commit()
        finally:
            cursor.close()

    def testCopyToWithQuery(self):
        try:
            cursor = self.db.cursor()
            stream = BytesIO()
            cursor.execute(
                "COPY (SELECT 1 as One, 2 as Two) TO STDOUT WITH DELIMITER "
                "'X' CSV HEADER QUOTE AS 'Y' FORCE QUOTE Two", stream=stream)
            self.assertEqual(stream.getvalue(), b('oneXtwo\n1XY2Y\n'))
            self.assertEqual(cursor.rowcount, 1)
            self.db.rollback()
        finally:
            cursor.close()

    def testCopyFromWithTable(self):
        try:
            cursor = self.db.cursor()
            stream = BytesIO(b("1\t1\t1\n2\t2\t2\n3\t3\t3\n"))
            cursor.execute("copy t1 from STDIN", stream=stream)
            self.assertEqual(cursor.rowcount, 3)

            cursor.execute("SELECT * FROM t1 ORDER BY f1")
            retval = cursor.fetchall()
            self.assertEqual(retval, ([1, 1, '1'], [2, 2, '2'], [3, 3, '3']))
            self.db.rollback()
        finally:
            cursor.close()

    def testCopyFromWithQuery(self):
        try:
            cursor = self.db.cursor()
            stream = BytesIO(b("f1Xf2\n1XY1Y\n"))
            cursor.execute(
                "COPY t1 (f1, f2) FROM STDIN WITH DELIMITER 'X' CSV HEADER "
                "QUOTE AS 'Y' FORCE NOT NULL f1", stream=stream)
            self.assertEqual(cursor.rowcount, 1)

            cursor.execute("SELECT * FROM t1 ORDER BY f1")
            retval = cursor.fetchall()
            self.assertEqual(retval, ([1, 1, None],))
            self.db.commit()
        finally:
            cursor.close()

    def testCopyFromWithError(self):
        try:
            cursor = self.db.cursor()
            stream = BytesIO(b("f1Xf2\n\n1XY1Y\n"))
            cursor.execute(
                "COPY t1 (f1, f2) FROM STDIN WITH DELIMITER 'X' CSV HEADER "
                "QUOTE AS 'Y' FORCE NOT NULL f1", stream=stream)
            self.assertTrue(False, "Should have raised an exception")
        except:
            args_dict = {
                'S': u('ERROR'),
                'C': u('22P02'),
                'M': u('invalid input syntax for integer: ""'),
                'W': u('COPY t1, line 2, column f1: ""'),
                'F': u('numutils.c'),
                'R': u('pg_atoi')
            }
            args = exc_info()[1].args[0]
            for k, v in iteritems(args_dict):
                self.assertEqual(args[k], v)
        finally:
            cursor.close()


if __name__ == "__main__":
    unittest.main()