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
|
# 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 of coverage/debug.py"""
import os
import re
import pytest
import coverage
from coverage import env
from coverage.backward import StringIO
from coverage.debug import filter_text, info_formatter, info_header, short_id, short_stack
from coverage.debug import clipped_repr
from tests.coveragetest import CoverageTest
from tests.helpers import re_line, re_lines
class InfoFormatterTest(CoverageTest):
"""Tests of debug.info_formatter."""
run_in_temp_dir = False
def test_info_formatter(self):
lines = list(info_formatter([
('x', 'hello there'),
('very long label', ['one element']),
('regular', ['abc', 'def', 'ghi', 'jkl']),
('nothing', []),
]))
expected = [
' x: hello there',
' very long label: one element',
' regular: abc',
' def',
' ghi',
' jkl',
' nothing: -none-',
]
assert expected == lines
def test_info_formatter_with_generator(self):
lines = list(info_formatter(('info%d' % i, i) for i in range(3)))
expected = [
' info0: 0',
' info1: 1',
' info2: 2',
]
assert expected == lines
def test_too_long_label(self):
with pytest.raises(AssertionError):
list(info_formatter([('this label is way too long and will not fit', 23)]))
@pytest.mark.parametrize("label, header", [
("x", "-- x ---------------------------------------------------------"),
("hello there", "-- hello there -----------------------------------------------"),
])
def test_info_header(label, header):
assert info_header(label) == header
@pytest.mark.parametrize("id64, id16", [
(0x1234, 0x1234),
(0x12340000, 0x1234),
(0xA5A55A5A, 0xFFFF),
(0x1234cba956780fed, 0x8008),
])
def test_short_id(id64, id16):
assert short_id(id64) == id16
@pytest.mark.parametrize("text, numchars, result", [
("hello", 10, "'hello'"),
("0123456789abcdefghijklmnopqrstuvwxyz", 15, "'01234...vwxyz'"),
])
def test_clipped_repr(text, numchars, result):
assert clipped_repr(text, numchars) == result
@pytest.mark.parametrize("text, filters, result", [
("hello", [], "hello"),
("hello\n", [], "hello\n"),
("hello\nhello\n", [], "hello\nhello\n"),
("hello\nbye\n", [lambda x: "="+x], "=hello\n=bye\n"),
("hello\nbye\n", [lambda x: "="+x, lambda x: x+"\ndone\n"], "=hello\ndone\n=bye\ndone\n"),
])
def test_filter_text(text, filters, result):
assert filter_text(text, filters) == result
class DebugTraceTest(CoverageTest):
"""Tests of debug output."""
def f1_debug_output(self, debug):
"""Runs some code with `debug` option, returns the debug output."""
# Make code to run.
self.make_file("f1.py", """\
def f1(x):
return x+1
for i in range(5):
f1(i)
""")
debug_out = StringIO()
cov = coverage.Coverage(debug=debug)
cov._debug_file = debug_out
self.start_import_stop(cov, "f1")
cov.save()
out_lines = debug_out.getvalue()
return out_lines
def test_debug_no_trace(self):
out_lines = self.f1_debug_output([])
# We should have no output at all.
assert not out_lines
def test_debug_trace(self):
out_lines = self.f1_debug_output(["trace"])
# We should have a line like "Tracing 'f1.py'"
assert "Tracing 'f1.py'" in out_lines
# We should have lines like "Not tracing 'collector.py'..."
coverage_lines = re_lines(
out_lines,
r"^Not tracing .*: is part of coverage.py$"
)
assert coverage_lines
def test_debug_trace_pid(self):
out_lines = self.f1_debug_output(["trace", "pid"])
# Now our lines are always prefixed with the process id.
pid_prefix = r"^%5d\.[0-9a-f]{4}: " % os.getpid()
pid_lines = re_lines(out_lines, pid_prefix)
assert pid_lines == out_lines
# We still have some tracing, and some not tracing.
assert re_lines(out_lines, pid_prefix + "Tracing ")
assert re_lines(out_lines, pid_prefix + "Not tracing ")
def test_debug_callers(self):
out_lines = self.f1_debug_output(["pid", "dataop", "dataio", "callers"])
print(out_lines)
# For every real message, there should be a stack trace with a line like
# "f1_debug_output : /Users/ned/coverage/tests/test_debug.py @71"
real_messages = re_lines(out_lines, r":\d+", match=False).splitlines()
frame_pattern = r"\s+f1_debug_output : .*tests[/\\]test_debug.py:\d+$"
frames = re_lines(out_lines, frame_pattern).splitlines()
assert len(real_messages) == len(frames)
last_line = out_lines.splitlines()[-1]
# The details of what to expect on the stack are empirical, and can change
# as the code changes. This test is here to ensure that the debug code
# continues working. It's ok to adjust these details over time.
assert re.search(r"^\s*\d+\.\w{4}: Adding file tracers: 0 files", real_messages[-1])
assert re.search(r"\s+add_file_tracers : .*coverage[/\\]sqldata.py:\d+$", last_line)
def test_debug_config(self):
out_lines = self.f1_debug_output(["config"])
labels = """
attempted_config_files branch config_files_read config_file cover_pylib data_file
debug exclude_list extra_css html_dir html_title ignore_errors
run_include run_omit parallel partial_always_list partial_list paths
precision show_missing source timid xml_output
report_include report_omit
""".split()
for label in labels:
label_pat = r"^\s*%s: " % label
msg = "Incorrect lines for %r" % label
assert 1 == len(re_lines(out_lines, label_pat).splitlines()), msg
def test_debug_sys(self):
out_lines = self.f1_debug_output(["sys"])
labels = """
version coverage coverage_paths stdlib_paths third_party_paths
tracer configs_attempted config_file configs_read data_file
python platform implementation executable
pid cwd path environment command_line cover_match pylib_match
""".split()
for label in labels:
label_pat = r"^\s*%s: " % label
msg = "Incorrect lines for %r" % label
assert 1 == len(re_lines(out_lines, label_pat).splitlines()), msg
def test_debug_sys_ctracer(self):
out_lines = self.f1_debug_output(["sys"])
tracer_line = re_line(out_lines, r"CTracer:").strip()
if env.C_TRACER:
expected = "CTracer: available"
else:
expected = "CTracer: unavailable"
assert expected == tracer_line
def f_one(*args, **kwargs):
"""First of the chain of functions for testing `short_stack`."""
return f_two(*args, **kwargs)
def f_two(*args, **kwargs):
"""Second of the chain of functions for testing `short_stack`."""
return f_three(*args, **kwargs)
def f_three(*args, **kwargs):
"""Third of the chain of functions for testing `short_stack`."""
return short_stack(*args, **kwargs)
class ShortStackTest(CoverageTest):
"""Tests of coverage.debug.short_stack."""
run_in_temp_dir = False
def test_short_stack(self):
stack = f_one().splitlines()
assert len(stack) > 10
assert "f_three" in stack[-1]
assert "f_two" in stack[-2]
assert "f_one" in stack[-3]
def test_short_stack_limit(self):
stack = f_one(limit=5).splitlines()
assert len(stack) == 5
def test_short_stack_skip(self):
stack = f_one(skip=1).splitlines()
assert "f_two" in stack[-1]
|
