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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
from sqlalchemy import MetaData, Table, Column, String, Unicode, Integer, \
create_engine
from sqlalchemy.testing import fixtures, AssertsExecutionResults, profiling
from sqlalchemy import testing
from sqlalchemy.testing import eq_
from sqlalchemy.util import u
from sqlalchemy.engine.result import RowProxy
import sys
NUM_FIELDS = 10
NUM_RECORDS = 1000
t = t2 = metadata = None
class ResultSetTest(fixtures.TestBase, AssertsExecutionResults):
__backend__ = True
@classmethod
def setup_class(cls):
global t, t2, metadata
metadata = MetaData(testing.db)
t = Table('table', metadata, *[Column('field%d' % fnum, String(50))
for fnum in range(NUM_FIELDS)])
t2 = Table(
'table2', metadata, *
[Column('field%d' % fnum, Unicode(50))
for fnum in range(NUM_FIELDS)])
def setup(self):
metadata.create_all()
t.insert().execute([dict(('field%d' % fnum, u('value%d' % fnum))
for fnum in range(NUM_FIELDS)) for r_num in
range(NUM_RECORDS)])
t2.insert().execute([dict(('field%d' % fnum, u('value%d' % fnum))
for fnum in range(NUM_FIELDS)) for r_num in
range(NUM_RECORDS)])
# warm up type caches
t.select().execute().fetchall()
t2.select().execute().fetchall()
def teardown(self):
metadata.drop_all()
@profiling.function_call_count()
def test_string(self):
[tuple(row) for row in t.select().execute().fetchall()]
@profiling.function_call_count()
def test_unicode(self):
[tuple(row) for row in t2.select().execute().fetchall()]
@profiling.function_call_count()
def test_raw_string(self):
stmt = 'SELECT %s FROM "table"' % (
", ".join("field%d" % fnum for fnum in range(NUM_FIELDS))
)
[tuple(row) for row in testing.db.execute(stmt).fetchall()]
@profiling.function_call_count()
def test_raw_unicode(self):
stmt = "SELECT %s FROM table2" % (
", ".join("field%d" % fnum for fnum in range(NUM_FIELDS))
)
[tuple(row) for row in testing.db.execute(stmt).fetchall()]
def test_contains_doesnt_compile(self):
row = t.select().execute().first()
c1 = Column('some column', Integer) + \
Column("some other column", Integer)
@profiling.function_call_count()
def go():
c1 in row
go()
class ExecutionTest(fixtures.TestBase):
__backend__ = True
def test_minimal_connection_execute(self):
# create an engine without any instrumentation.
e = create_engine('sqlite://')
c = e.connect()
# ensure initial connect activities complete
c.execute("select 1")
@profiling.function_call_count()
def go():
c.execute("select 1")
try:
go()
finally:
c.close()
def test_minimal_engine_execute(self, variance=0.10):
# create an engine without any instrumentation.
e = create_engine('sqlite://')
# ensure initial connect activities complete
e.execute("select 1")
@profiling.function_call_count()
def go():
e.execute("select 1")
go()
class RowProxyTest(fixtures.TestBase):
__requires__ = 'cpython',
__backend__ = True
def _rowproxy_fixture(self, keys, processors, row):
class MockMeta(object):
def __init__(self):
pass
metadata = MockMeta()
keymap = {}
for index, (keyobjs, processor, values) in \
enumerate(list(zip(keys, processors, row))):
for key in keyobjs:
keymap[key] = (processor, key, index)
keymap[index] = (processor, key, index)
return RowProxy(metadata, row, processors, keymap)
def _test_getitem_value_refcounts(self, seq_factory):
col1, col2 = object(), object()
def proc1(value):
return value
value1, value2 = "x", "y"
row = self._rowproxy_fixture(
[(col1, "a"), (col2, "b")],
[proc1, None],
seq_factory([value1, value2])
)
v1_refcount = sys.getrefcount(value1)
v2_refcount = sys.getrefcount(value2)
for i in range(10):
row[col1]
row["a"]
row[col2]
row["b"]
row[0]
row[1]
row[0:2]
eq_(sys.getrefcount(value1), v1_refcount)
eq_(sys.getrefcount(value2), v2_refcount)
def test_value_refcounts_pure_tuple(self):
self._test_getitem_value_refcounts(tuple)
def test_value_refcounts_custom_seq(self):
class CustomSeq(object):
def __init__(self, data):
self.data = data
def __getitem__(self, item):
return self.data[item]
def __iter__(self):
return iter(self.data)
self._test_getitem_value_refcounts(CustomSeq)
|
