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
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
|
# Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
# For details: https://github.com/nedbat/coveragepy/blob/master/NOTICE.txt
"""Tests for context support."""
import inspect
import os.path
import coverage
from coverage import env
from coverage.context import qualname_from_frame
from coverage.data import CoverageData
from coverage.misc import CoverageException
from tests.coveragetest import CoverageTest
class StaticContextTest(CoverageTest):
"""Tests of the static context."""
def setUp(self):
super(StaticContextTest, self).setUp()
self.skip_unless_data_storage_is("sql")
def test_no_context(self):
self.make_file("main.py", "a = 1")
cov = coverage.Coverage()
self.start_import_stop(cov, "main")
data = cov.get_data()
self.assertCountEqual(data.measured_contexts(), [""])
def test_static_context(self):
self.make_file("main.py", "a = 1")
cov = coverage.Coverage(context="gooey")
self.start_import_stop(cov, "main")
data = cov.get_data()
self.assertCountEqual(data.measured_contexts(), ["gooey"])
SOURCE = """\
a = 1
if a > 2:
a = 3
assert a == 1
"""
LINES = [1, 2, 4]
ARCS = [(-1, 1), (1, 2), (2, 4), (4, -1)]
def run_red_blue(self, **options):
"""Run red.py and blue.py, and return their CoverageData objects."""
self.make_file("red.py", self.SOURCE)
red_cov = coverage.Coverage(context="red", data_suffix="r", source=["."], **options)
self.start_import_stop(red_cov, "red")
red_cov.save()
red_data = red_cov.get_data()
self.make_file("blue.py", self.SOURCE)
blue_cov = coverage.Coverage(context="blue", data_suffix="b", source=["."], **options)
self.start_import_stop(blue_cov, "blue")
blue_cov.save()
blue_data = blue_cov.get_data()
return red_data, blue_data
def test_combining_line_contexts(self):
red_data, blue_data = self.run_red_blue()
for datas in [[red_data, blue_data], [blue_data, red_data]]:
combined = CoverageData(suffix="combined")
for data in datas:
combined.update(data)
self.assertEqual(combined.measured_contexts(), {'red', 'blue'})
full_names = {os.path.basename(f): f for f in combined.measured_files()}
self.assertCountEqual(full_names, ['red.py', 'blue.py'])
fred = full_names['red.py']
fblue = full_names['blue.py']
self.assertEqual(combined.lines(fred, context='red'), self.LINES)
self.assertEqual(combined.lines(fred, context='blue'), [])
self.assertEqual(combined.lines(fblue, context='red'), [])
self.assertEqual(combined.lines(fblue, context='blue'), self.LINES)
def test_combining_arc_contexts(self):
red_data, blue_data = self.run_red_blue(branch=True)
for datas in [[red_data, blue_data], [blue_data, red_data]]:
combined = CoverageData(suffix="combined")
for data in datas:
combined.update(data)
self.assertEqual(combined.measured_contexts(), {'red', 'blue'})
full_names = {os.path.basename(f): f for f in combined.measured_files()}
self.assertCountEqual(full_names, ['red.py', 'blue.py'])
fred = full_names['red.py']
fblue = full_names['blue.py']
self.assertEqual(combined.lines(fred, context='red'), self.LINES)
self.assertEqual(combined.lines(fred, context='blue'), [])
self.assertEqual(combined.lines(fblue, context='red'), [])
self.assertEqual(combined.lines(fblue, context='blue'), self.LINES)
self.assertEqual(combined.arcs(fred, context='red'), self.ARCS)
self.assertEqual(combined.arcs(fred, context='blue'), [])
self.assertEqual(combined.arcs(fblue, context='red'), [])
self.assertEqual(combined.arcs(fblue, context='blue'), self.ARCS)
class DynamicContextTest(CoverageTest):
"""Tests of dynamically changing contexts."""
def setUp(self):
super(DynamicContextTest, self).setUp()
self.skip_unless_data_storage_is("sql")
if not env.C_TRACER:
self.skipTest("Only the C tracer supports dynamic contexts")
SOURCE = """\
def helper(lineno):
x = 2
def test_one():
a = 5
helper(6)
def test_two():
a = 9
b = 10
if a > 11:
b = 12
assert a == (13-4)
assert b == (14-4)
helper(15)
test_one()
x = 18
helper(19)
test_two()
"""
OUTER_LINES = [1, 4, 8, 17, 18, 19, 2, 20]
TEST_ONE_LINES = [5, 6, 2]
TEST_TWO_LINES = [9, 10, 11, 13, 14, 15, 2]
def test_dynamic_alone(self):
self.make_file("two_tests.py", self.SOURCE)
cov = coverage.Coverage(source=["."])
cov.set_option("run:dynamic_context", "test_function")
self.start_import_stop(cov, "two_tests")
data = cov.get_data()
fname = os.path.abspath("two_tests.py")
self.assertCountEqual(data.measured_contexts(), ["", "test_one", "test_two"])
self.assertCountEqual(data.lines(fname, ""), self.OUTER_LINES)
self.assertCountEqual(data.lines(fname, "test_one"), self.TEST_ONE_LINES)
self.assertCountEqual(data.lines(fname, "test_two"), self.TEST_TWO_LINES)
def test_static_and_dynamic(self):
self.make_file("two_tests.py", self.SOURCE)
cov = coverage.Coverage(context="stat", source=["."])
cov.set_option("run:dynamic_context", "test_function")
self.start_import_stop(cov, "two_tests")
data = cov.get_data()
fname = os.path.abspath("two_tests.py")
self.assertCountEqual(data.measured_contexts(), ["stat", "stat:test_one", "stat:test_two"])
self.assertCountEqual(data.lines(fname, "stat"), self.OUTER_LINES)
self.assertCountEqual(data.lines(fname, "stat:test_one"), self.TEST_ONE_LINES)
self.assertCountEqual(data.lines(fname, "stat:test_two"), self.TEST_TWO_LINES)
class DynamicContextWithPythonTracerTest(CoverageTest):
"""The Python tracer doesn't do dynamic contexts at all."""
run_in_temp_dir = False
def test_python_tracer_fails_properly(self):
if env.C_TRACER:
self.skipTest("This test is specifically about the Python tracer.")
cov = coverage.Coverage()
cov.set_option("run:dynamic_context", "test_function")
msg = r"Can't support dynamic contexts with PyTracer"
with self.assertRaisesRegex(CoverageException, msg):
cov.start()
def get_qualname():
"""Helper to return qualname_from_frame for the caller."""
stack = inspect.stack()[1:]
if any(sinfo[0].f_code.co_name == "get_qualname" for sinfo in stack):
# We're calling outselves recursively, maybe because we're testing
# properties. Return an int to try to get back on track.
return 17
caller_frame = stack[0][0]
return qualname_from_frame(caller_frame)
class Parent(object): # pylint: disable=missing-docstring
def meth(self): # pylint: disable=missing-docstring
return get_qualname()
@property
def a_property(self): # pylint: disable=missing-docstring
return get_qualname()
class Child(Parent): # pylint: disable=missing-docstring
pass
class SomethingElse(object): # pylint: disable=missing-docstring
pass
class MultiChild(SomethingElse, Child): # pylint: disable=missing-docstring
pass
def no_arguments(): # pylint: disable=missing-docstring
return get_qualname()
def plain_old_function(a, b): # pylint: disable=missing-docstring, unused-argument
return get_qualname()
def fake_out(self): # pylint: disable=missing-docstring, unused-argument
return get_qualname()
def meth(self):
return get_qualname()
class QualnameTest(CoverageTest):
"""Tests of qualname_from_frame."""
run_in_temp_dir = False
def test_method(self):
self.assertEqual(Parent().meth(), "Parent.meth")
def test_inherited_method(self):
self.assertEqual(Child().meth(), "Parent.meth")
def test_mi_inherited_method(self):
self.assertEqual(MultiChild().meth(), "Parent.meth")
def test_no_arguments(self):
self.assertEqual(no_arguments(), "no_arguments")
def test_plain_old_function(self):
self.assertEqual(plain_old_function(0, 1), "plain_old_function")
def test_fake_out(self):
self.assertEqual(fake_out(0), "fake_out")
def test_property(self):
# I'd like this to be "Parent.a_property", but this might be ok too.
self.assertEqual(Parent().a_property, "a_property")
def test_changeling(self):
c = Child()
c.meth = meth
self.assertEqual(c.meth(c), "meth")
|
