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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427
|
# 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 coverage.py's API."""
import fnmatch
import glob
import io
import os
import os.path
import re
import shutil
import sys
import textwrap
import pytest
import coverage
from coverage import env
from coverage.data import line_counts
from coverage.exceptions import CoverageException, DataError, NoDataError, NoSource
from coverage.files import abs_file, relative_filename
from coverage.misc import import_local_file
from tests.coveragetest import CoverageTest, TESTS_DIR, UsingModulesMixin
from tests.helpers import assert_count_equal, assert_coverage_warnings
from tests.helpers import change_dir, nice_file, os_sep
BAD_SQLITE_REGEX = r"file( is encrypted or)? is not a database"
class ApiTest(CoverageTest):
"""Api-oriented tests for coverage.py."""
def clean_files(self, files, pats):
"""Remove names matching `pats` from `files`, a list of file names."""
good = []
for f in files:
for pat in pats:
if fnmatch.fnmatch(f, pat):
break
else:
good.append(f)
return good
def assertFiles(self, files):
"""Assert that the files here are `files`, ignoring the usual junk."""
here = os.listdir(".")
here = self.clean_files(here, ["*.pyc", "__pycache__", "*$py.class"])
assert_count_equal(here, files)
def test_unexecuted_file(self):
cov = coverage.Coverage()
self.make_file("mycode.py", """\
a = 1
b = 2
if b == 3:
c = 4
d = 5
""")
self.make_file("not_run.py", """\
fooey = 17
""")
# Import the Python file, executing it.
self.start_import_stop(cov, "mycode")
_, statements, missing, _ = cov.analysis("not_run.py")
assert statements == [1]
assert missing == [1]
def test_filenames(self):
self.make_file("mymain.py", """\
import mymod
a = 1
""")
self.make_file("mymod.py", """\
fooey = 17
""")
# Import the Python file, executing it.
cov = coverage.Coverage()
self.start_import_stop(cov, "mymain")
filename, _, _, _ = cov.analysis("mymain.py")
assert os.path.basename(filename) == "mymain.py"
filename, _, _, _ = cov.analysis("mymod.py")
assert os.path.basename(filename) == "mymod.py"
filename, _, _, _ = cov.analysis(sys.modules["mymain"])
assert os.path.basename(filename) == "mymain.py"
filename, _, _, _ = cov.analysis(sys.modules["mymod"])
assert os.path.basename(filename) == "mymod.py"
# Import the Python file, executing it again, once it's been compiled
# already.
cov = coverage.Coverage()
self.start_import_stop(cov, "mymain")
filename, _, _, _ = cov.analysis("mymain.py")
assert os.path.basename(filename) == "mymain.py"
filename, _, _, _ = cov.analysis("mymod.py")
assert os.path.basename(filename) == "mymod.py"
filename, _, _, _ = cov.analysis(sys.modules["mymain"])
assert os.path.basename(filename) == "mymain.py"
filename, _, _, _ = cov.analysis(sys.modules["mymod"])
assert os.path.basename(filename) == "mymod.py"
def test_ignore_stdlib(self):
self.make_file("mymain.py", """\
import colorsys
a = 1
hls = colorsys.rgb_to_hls(1.0, 0.5, 0.0)
""")
# Measure without the stdlib.
cov1 = coverage.Coverage()
assert cov1.config.cover_pylib is False
self.start_import_stop(cov1, "mymain")
# some statements were marked executed in mymain.py
_, statements, missing, _ = cov1.analysis("mymain.py")
assert statements != missing
# but none were in colorsys.py
_, statements, missing, _ = cov1.analysis("colorsys.py")
assert statements == missing
# Measure with the stdlib.
cov2 = coverage.Coverage(cover_pylib=True)
self.start_import_stop(cov2, "mymain")
# some statements were marked executed in mymain.py
_, statements, missing, _ = cov2.analysis("mymain.py")
assert statements != missing
# and some were marked executed in colorsys.py
_, statements, missing, _ = cov2.analysis("colorsys.py")
assert statements != missing
def test_include_can_measure_stdlib(self):
self.make_file("mymain.py", """\
import colorsys, random
a = 1
r, g, b = [random.random() for _ in range(3)]
hls = colorsys.rgb_to_hls(r, g, b)
""")
# Measure without the stdlib, but include colorsys.
cov1 = coverage.Coverage(cover_pylib=False, include=["*/colorsys.py"])
self.start_import_stop(cov1, "mymain")
# some statements were marked executed in colorsys.py
_, statements, missing, _ = cov1.analysis("colorsys.py")
assert statements != missing
# but none were in random.py
_, statements, missing, _ = cov1.analysis("random.py")
assert statements == missing
def test_exclude_list(self):
cov = coverage.Coverage()
cov.clear_exclude()
assert cov.get_exclude_list() == []
cov.exclude("foo")
assert cov.get_exclude_list() == ["foo"]
cov.exclude("bar")
assert cov.get_exclude_list() == ["foo", "bar"]
assert cov._exclude_regex('exclude') == "(?:foo)|(?:bar)"
cov.clear_exclude()
assert cov.get_exclude_list() == []
def test_exclude_partial_list(self):
cov = coverage.Coverage()
cov.clear_exclude(which='partial')
assert cov.get_exclude_list(which='partial') == []
cov.exclude("foo", which='partial')
assert cov.get_exclude_list(which='partial') == ["foo"]
cov.exclude("bar", which='partial')
assert cov.get_exclude_list(which='partial') == ["foo", "bar"]
assert cov._exclude_regex(which='partial') == "(?:foo)|(?:bar)"
cov.clear_exclude(which='partial')
assert cov.get_exclude_list(which='partial') == []
def test_exclude_and_partial_are_separate_lists(self):
cov = coverage.Coverage()
cov.clear_exclude(which='partial')
cov.clear_exclude(which='exclude')
cov.exclude("foo", which='partial')
assert cov.get_exclude_list(which='partial') == ['foo']
assert cov.get_exclude_list(which='exclude') == []
cov.exclude("bar", which='exclude')
assert cov.get_exclude_list(which='partial') == ['foo']
assert cov.get_exclude_list(which='exclude') == ['bar']
cov.exclude("p2", which='partial')
cov.exclude("e2", which='exclude')
assert cov.get_exclude_list(which='partial') == ['foo', 'p2']
assert cov.get_exclude_list(which='exclude') == ['bar', 'e2']
cov.clear_exclude(which='partial')
assert cov.get_exclude_list(which='partial') == []
assert cov.get_exclude_list(which='exclude') == ['bar', 'e2']
cov.clear_exclude(which='exclude')
assert cov.get_exclude_list(which='partial') == []
assert cov.get_exclude_list(which='exclude') == []
def test_datafile_default(self):
# Default data file behavior: it's .coverage
self.make_file("datatest1.py", """\
fooey = 17
""")
self.assertFiles(["datatest1.py"])
cov = coverage.Coverage()
self.start_import_stop(cov, "datatest1")
cov.save()
self.assertFiles(["datatest1.py", ".coverage"])
def test_datafile_specified(self):
# You can specify the data file name.
self.make_file("datatest2.py", """\
fooey = 17
""")
self.assertFiles(["datatest2.py"])
cov = coverage.Coverage(data_file="cov.data")
self.start_import_stop(cov, "datatest2")
cov.save()
self.assertFiles(["datatest2.py", "cov.data"])
def test_datafile_and_suffix_specified(self):
# You can specify the data file name and suffix.
self.make_file("datatest3.py", """\
fooey = 17
""")
self.assertFiles(["datatest3.py"])
cov = coverage.Coverage(data_file="cov.data", data_suffix="14")
self.start_import_stop(cov, "datatest3")
cov.save()
self.assertFiles(["datatest3.py", "cov.data.14"])
def test_datafile_from_rcfile(self):
# You can specify the data file name in the .coveragerc file
self.make_file("datatest4.py", """\
fooey = 17
""")
self.make_file(".coveragerc", """\
[run]
data_file = mydata.dat
""")
self.assertFiles(["datatest4.py", ".coveragerc"])
cov = coverage.Coverage()
self.start_import_stop(cov, "datatest4")
cov.save()
self.assertFiles(["datatest4.py", ".coveragerc", "mydata.dat"])
def test_deep_datafile(self):
self.make_file("datatest5.py", "fooey = 17")
self.assertFiles(["datatest5.py"])
cov = coverage.Coverage(data_file="deep/sub/cov.data")
self.start_import_stop(cov, "datatest5")
cov.save()
self.assertFiles(["datatest5.py", "deep"])
self.assert_exists("deep/sub/cov.data")
def test_datafile_none(self):
cov = coverage.Coverage(data_file=None)
def f1(): # pragma: nested
a = 1 # pylint: disable=unused-variable
one_line_number = f1.__code__.co_firstlineno + 1
lines = []
def run_one_function(f):
cov.erase()
cov.start()
f()
cov.stop()
fs = cov.get_data().measured_files()
lines.append(cov.get_data().lines(list(fs)[0]))
run_one_function(f1)
run_one_function(f1)
run_one_function(f1)
assert lines == [[one_line_number]] * 3
self.assert_doesnt_exist(".coverage")
assert os.listdir(".") == []
def test_empty_reporting(self):
# empty summary reports raise exception, just like the xml report
cov = coverage.Coverage()
cov.erase()
with pytest.raises(NoDataError, match="No data to report."):
cov.report()
def test_completely_zero_reporting(self):
# https://github.com/nedbat/coveragepy/issues/884
# If nothing was measured, the file-touching didn't happen properly.
self.make_file("foo/bar.py", "print('Never run')")
self.make_file("test.py", "assert True")
with pytest.warns(Warning) as warns:
cov = coverage.Coverage(source=["foo"])
self.start_import_stop(cov, "test")
cov.report()
assert_coverage_warnings(warns, "No data was collected. (no-data-collected)")
# Name Stmts Miss Cover
# --------------------------------
# foo/bar.py 1 1 0%
# --------------------------------
# TOTAL 1 1 0%
last = self.last_line_squeezed(self.stdout())
assert "TOTAL 1 1 0%" == last
def test_cov4_data_file(self):
cov4_data = (
"!coverage.py: This is a private format, don't read it directly!" +
'{"lines":{"/private/tmp/foo.py":[1,5,2,3]}}'
)
self.make_file(".coverage", cov4_data)
cov = coverage.Coverage()
with pytest.raises(DataError, match="Looks like a coverage 4.x data file"):
cov.load()
cov.erase()
def make_code1_code2(self):
"""Create the code1.py and code2.py files."""
self.make_file("code1.py", """\
code1 = 1
""")
self.make_file("code2.py", """\
code2 = 1
code2 = 2
""")
def check_code1_code2(self, cov):
"""Check the analysis is correct for code1.py and code2.py."""
_, statements, missing, _ = cov.analysis("code1.py")
assert statements == [1]
assert missing == []
_, statements, missing, _ = cov.analysis("code2.py")
assert statements == [1, 2]
assert missing == []
def test_start_stop_start_stop(self):
self.make_code1_code2()
cov = coverage.Coverage()
self.start_import_stop(cov, "code1")
cov.save()
self.start_import_stop(cov, "code2")
self.check_code1_code2(cov)
def test_start_save_stop(self):
self.make_code1_code2()
cov = coverage.Coverage()
cov.start()
import_local_file("code1") # pragma: nested
cov.save() # pragma: nested
import_local_file("code2") # pragma: nested
cov.stop() # pragma: nested
self.check_code1_code2(cov)
def test_start_save_nostop(self):
self.make_code1_code2()
cov = coverage.Coverage()
cov.start()
import_local_file("code1") # pragma: nested
cov.save() # pragma: nested
import_local_file("code2") # pragma: nested
self.check_code1_code2(cov) # pragma: nested
# Then stop it, or the test suite gets out of whack.
cov.stop() # pragma: nested
def test_two_getdata_only_warn_once(self):
self.make_code1_code2()
cov = coverage.Coverage(source=["."], omit=["code1.py"])
cov.start()
import_local_file("code1") # pragma: nested
cov.stop() # pragma: nested
# We didn't collect any data, so we should get a warning.
with self.assert_warnings(cov, ["No data was collected"]):
cov.get_data()
# But calling get_data a second time with no intervening activity
# won't make another warning.
with self.assert_warnings(cov, []):
cov.get_data()
def test_two_getdata_warn_twice(self):
self.make_code1_code2()
cov = coverage.Coverage(source=["."], omit=["code1.py", "code2.py"])
cov.start()
import_local_file("code1") # pragma: nested
# We didn't collect any data, so we should get a warning.
with self.assert_warnings(cov, ["No data was collected"]): # pragma: nested
cov.save() # pragma: nested
import_local_file("code2") # pragma: nested
# Calling get_data a second time after tracing some more will warn again.
with self.assert_warnings(cov, ["No data was collected"]): # pragma: nested
cov.get_data() # pragma: nested
# Then stop it, or the test suite gets out of whack.
cov.stop() # pragma: nested
def make_good_data_files(self):
"""Make some good data files."""
self.make_code1_code2()
cov = coverage.Coverage(data_suffix=True)
self.start_import_stop(cov, "code1")
cov.save()
cov = coverage.Coverage(data_suffix=True)
self.start_import_stop(cov, "code2")
cov.save()
self.assert_file_count(".coverage.*", 2)
def test_combining_corrupt_data(self):
# If you combine a corrupt data file, then you will get a warning,
# and the file will remain.
self.make_good_data_files()
self.make_file(".coverage.foo", """La la la, this isn't coverage data!""")
cov = coverage.Coverage()
warning_regex = (
r"Couldn't use data file '.*\.coverage\.foo': " + BAD_SQLITE_REGEX
)
with self.assert_warnings(cov, [warning_regex]):
cov.combine()
# We got the results from code1 and code2 properly.
self.check_code1_code2(cov)
# The bad file still exists, but it's the only parallel data file left.
self.assert_exists(".coverage.foo")
self.assert_file_count(".coverage.*", 1)
def test_combining_twice(self):
self.make_good_data_files()
cov1 = coverage.Coverage()
cov1.combine()
assert self.stdout() == ""
cov1.save()
self.check_code1_code2(cov1)
self.assert_file_count(".coverage.*", 0)
self.assert_exists(".coverage")
cov2 = coverage.Coverage()
with pytest.raises(NoDataError, match=r"No data to combine"):
cov2.combine(strict=True, keep=False)
cov3 = coverage.Coverage()
cov3.combine()
assert self.stdout() == ""
# Now the data is empty!
_, statements, missing, _ = cov3.analysis("code1.py")
assert statements == [1]
assert missing == [1]
_, statements, missing, _ = cov3.analysis("code2.py")
assert statements == [1, 2]
assert missing == [1, 2]
def test_combining_with_a_used_coverage(self):
# Can you use a coverage object to run one shard of a parallel suite,
# and then also combine the data?
self.make_code1_code2()
cov = coverage.Coverage(data_suffix=True)
self.start_import_stop(cov, "code1")
cov.save()
cov = coverage.Coverage(data_suffix=True)
self.start_import_stop(cov, "code2")
cov.save()
cov.combine()
assert self.stdout() == ""
self.check_code1_code2(cov)
def test_ordered_combine(self):
# https://github.com/nedbat/coveragepy/issues/649
# The order of the [paths] setting matters
def make_data_file():
self.make_data_file(
basename=".coverage.1",
lines={
abs_file('ci/girder/g1.py'): range(10),
abs_file('ci/girder/plugins/p1.py'): range(10),
},
)
def get_combined_filenames():
cov = coverage.Coverage()
cov.combine()
assert self.stdout() == ""
cov.save()
data = cov.get_data()
filenames = {relative_filename(f).replace("\\", "/") for f in data.measured_files()}
return filenames
# Case 1: get the order right.
make_data_file()
self.make_file(".coveragerc", """\
[paths]
plugins =
plugins/
ci/girder/plugins/
girder =
girder/
ci/girder/
""")
assert get_combined_filenames() == {'girder/g1.py', 'plugins/p1.py'}
# Case 2: get the order wrong.
make_data_file()
self.make_file(".coveragerc", """\
[paths]
girder =
girder/
ci/girder/
plugins =
plugins/
ci/girder/plugins/
""")
assert get_combined_filenames() == {'girder/g1.py', 'girder/plugins/p1.py'}
def test_warnings(self):
self.make_file("hello.py", """\
import sys, os
print("Hello")
""")
with pytest.warns(Warning) as warns:
cov = coverage.Coverage(source=["sys", "xyzzy", "quux"])
self.start_import_stop(cov, "hello")
cov.get_data()
assert "Hello\n" == self.stdout()
assert_coverage_warnings(
warns,
"Module sys has no Python source. (module-not-python)",
"Module xyzzy was never imported. (module-not-imported)",
"Module quux was never imported. (module-not-imported)",
"No data was collected. (no-data-collected)",
)
def test_warnings_suppressed(self):
self.make_file("hello.py", """\
import sys, os
print("Hello")
""")
self.make_file(".coveragerc", """\
[run]
disable_warnings = no-data-collected, module-not-imported
""")
with pytest.warns(Warning) as warns:
cov = coverage.Coverage(source=["sys", "xyzzy", "quux"])
self.start_import_stop(cov, "hello")
cov.get_data()
assert "Hello\n" == self.stdout()
assert_coverage_warnings(warns, "Module sys has no Python source. (module-not-python)")
# No "module-not-imported" in warns
# No "no-data-collected" in warns
def test_warn_once(self):
with pytest.warns(Warning) as warns:
cov = coverage.Coverage()
cov.load()
cov._warn("Warning, warning 1!", slug="bot", once=True)
cov._warn("Warning, warning 2!", slug="bot", once=True)
assert_coverage_warnings(warns, "Warning, warning 1! (bot)")
# No "Warning, warning 2!" in warns
def test_source_and_include_dont_conflict(self):
# A bad fix made this case fail: https://github.com/nedbat/coveragepy/issues/541
self.make_file("a.py", "import b\na = 1")
self.make_file("b.py", "b = 1")
self.make_file(".coveragerc", """\
[run]
source = .
""")
# Just like: coverage run a.py
cov = coverage.Coverage()
self.start_import_stop(cov, "a")
cov.save()
# Run the equivalent of: coverage report --include=b.py
cov = coverage.Coverage(include=["b.py"])
cov.load()
# There should be no exception. At one point, report() threw:
# CoverageException: --include and --source are mutually exclusive
cov.report()
expected = textwrap.dedent("""\
Name Stmts Miss Cover
---------------------------
b.py 1 0 100%
---------------------------
TOTAL 1 0 100%
""")
assert expected == self.stdout()
def make_test_files(self):
"""Create a simple file representing a method with two tests.
Returns absolute path to the file.
"""
self.make_file("testsuite.py", """\
def timestwo(x):
return x*2
def test_multiply_zero():
assert timestwo(0) == 0
def test_multiply_six():
assert timestwo(6) == 12
""")
def test_switch_context_testrunner(self):
# This test simulates a coverage-aware test runner,
# measuring labeled coverage via public API
self.make_test_files()
# Test runner starts
cov = coverage.Coverage()
cov.start()
if "pragma: nested":
# Imports the test suite
suite = import_local_file("testsuite")
# Measures test case 1
cov.switch_context('multiply_zero')
suite.test_multiply_zero()
# Measures test case 2
cov.switch_context('multiply_six')
suite.test_multiply_six()
# Runner finishes
cov.save()
cov.stop()
# Labeled data is collected
data = cov.get_data()
assert ['', 'multiply_six', 'multiply_zero'] == sorted(data.measured_contexts())
filenames = self.get_measured_filenames(data)
suite_filename = filenames['testsuite.py']
data.set_query_context("multiply_six")
assert [2, 8] == sorted(data.lines(suite_filename))
data.set_query_context("multiply_zero")
assert [2, 5] == sorted(data.lines(suite_filename))
def test_switch_context_with_static(self):
# This test simulates a coverage-aware test runner,
# measuring labeled coverage via public API,
# with static label prefix.
self.make_test_files()
# Test runner starts
cov = coverage.Coverage(context="mysuite")
cov.start()
if "pragma: nested":
# Imports the test suite
suite = import_local_file("testsuite")
# Measures test case 1
cov.switch_context('multiply_zero')
suite.test_multiply_zero()
# Measures test case 2
cov.switch_context('multiply_six')
suite.test_multiply_six()
# Runner finishes
cov.save()
cov.stop()
# Labeled data is collected
data = cov.get_data()
expected = ['mysuite', 'mysuite|multiply_six', 'mysuite|multiply_zero']
assert expected == sorted(data.measured_contexts())
filenames = self.get_measured_filenames(data)
suite_filename = filenames['testsuite.py']
data.set_query_context("mysuite|multiply_six")
assert [2, 8] == sorted(data.lines(suite_filename))
data.set_query_context("mysuite|multiply_zero")
assert [2, 5] == sorted(data.lines(suite_filename))
def test_dynamic_context_conflict(self):
cov = coverage.Coverage(source=["."])
cov.set_option("run:dynamic_context", "test_function")
cov.start()
with pytest.warns(Warning) as warns:
# Switch twice, but only get one warning.
cov.switch_context("test1") # pragma: nested
cov.switch_context("test2") # pragma: nested
cov.stop() # pragma: nested
assert_coverage_warnings(warns, "Conflicting dynamic contexts (dynamic-conflict)")
def test_switch_context_unstarted(self):
# Coverage must be started to switch context
msg = "Cannot switch context, coverage is not started"
cov = coverage.Coverage()
with pytest.raises(CoverageException, match=msg):
cov.switch_context("test1")
cov.start()
cov.switch_context("test2") # pragma: nested
cov.stop() # pragma: nested
with pytest.raises(CoverageException, match=msg):
cov.switch_context("test3")
def test_config_crash(self):
# The internal '[run] _crash' setting can be used to artificially raise
# exceptions from inside Coverage.
cov = coverage.Coverage()
cov.set_option("run:_crash", "test_config_crash")
with pytest.raises(Exception, match="Crashing because called by test_config_crash"):
cov.start()
def test_config_crash_no_crash(self):
# '[run] _crash' really checks the call stack.
cov = coverage.Coverage()
cov.set_option("run:_crash", "not_my_caller")
cov.start()
cov.stop()
def test_run_debug_sys(self):
# https://github.com/nedbat/coveragepy/issues/907
cov = coverage.Coverage()
cov.start()
d = dict(cov.sys_info()) # pragma: nested
cov.stop() # pragma: nested
assert d['data_file'].endswith(".coverage")
class CurrentInstanceTest(CoverageTest):
"""Tests of Coverage.current()."""
run_in_temp_dir = False
def assert_current_is_none(self, current):
"""Assert that a current we expect to be None is correct."""
# During meta-coverage, the None answers will be wrong because the
# overall coverage measurement will still be on the current-stack.
# Since we know they will be wrong, and we have non-meta test runs
# also, don't assert them.
if not env.METACOV:
assert current is None
def test_current(self):
cur0 = coverage.Coverage.current()
self.assert_current_is_none(cur0)
# Making an instance doesn't make it current.
cov = coverage.Coverage()
cur1 = coverage.Coverage.current()
self.assert_current_is_none(cur1)
assert cur0 is cur1
# Starting the instance makes it current.
cov.start()
if "# pragma: nested":
cur2 = coverage.Coverage.current()
assert cur2 is cov
# Stopping the instance makes current None again.
cov.stop()
cur3 = coverage.Coverage.current()
self.assert_current_is_none(cur3)
assert cur0 is cur3
class NamespaceModuleTest(UsingModulesMixin, CoverageTest):
"""Test PEP-420 namespace modules."""
def test_explicit_namespace_module(self):
self.make_file("main.py", "import namespace_420\n")
cov = coverage.Coverage()
self.start_import_stop(cov, "main")
with pytest.raises(CoverageException, match=r"Module .* has no file"):
cov.analysis(sys.modules['namespace_420'])
def test_bug_572(self):
self.make_file("main.py", "import namespace_420\n")
# Use source=namespace_420 to trigger the check that used to fail,
# and use source=main so that something is measured.
cov = coverage.Coverage(source=["namespace_420", "main"])
with self.assert_warnings(cov, []):
self.start_import_stop(cov, "main")
cov.report()
class IncludeOmitTestsMixin(UsingModulesMixin, CoverageTest):
"""Test methods for coverage methods taking include and omit."""
def filenames_in(self, summary, filenames):
"""Assert the `filenames` are in the keys of `summary`."""
for filename in filenames.split():
assert filename in summary
def filenames_not_in(self, summary, filenames):
"""Assert the `filenames` are not in the keys of `summary`."""
for filename in filenames.split():
assert filename not in summary
def test_nothing_specified(self):
result = self.coverage_usepkgs()
self.filenames_in(result, "p1a p1b p2a p2b othera otherb osa osb")
self.filenames_not_in(result, "p1c")
# Because there was no source= specified, we don't search for
# unexecuted files.
def test_include(self):
result = self.coverage_usepkgs(include=["*/p1a.py"])
self.filenames_in(result, "p1a")
self.filenames_not_in(result, "p1b p1c p2a p2b othera otherb osa osb")
def test_include_2(self):
result = self.coverage_usepkgs(include=["*a.py"])
self.filenames_in(result, "p1a p2a othera osa")
self.filenames_not_in(result, "p1b p1c p2b otherb osb")
def test_include_as_string(self):
result = self.coverage_usepkgs(include="*a.py")
self.filenames_in(result, "p1a p2a othera osa")
self.filenames_not_in(result, "p1b p1c p2b otherb osb")
def test_omit(self):
result = self.coverage_usepkgs(omit=["*/p1a.py"])
self.filenames_in(result, "p1b p2a p2b")
self.filenames_not_in(result, "p1a p1c")
def test_omit_2(self):
result = self.coverage_usepkgs(omit=["*a.py"])
self.filenames_in(result, "p1b p2b otherb osb")
self.filenames_not_in(result, "p1a p1c p2a othera osa")
def test_omit_as_string(self):
result = self.coverage_usepkgs(omit="*a.py")
self.filenames_in(result, "p1b p2b otherb osb")
self.filenames_not_in(result, "p1a p1c p2a othera osa")
def test_omit_and_include(self):
result = self.coverage_usepkgs(include=["*/p1*"], omit=["*/p1a.py"])
self.filenames_in(result, "p1b")
self.filenames_not_in(result, "p1a p1c p2a p2b")
class SourceIncludeOmitTest(IncludeOmitTestsMixin, CoverageTest):
"""Test using `source`, `include`, and `omit` when measuring code."""
def setUp(self):
super().setUp()
# These tests use the TESTS_DIR/modules files, but they cd into it. To
# keep tests from cross-contaminating, we make a copy of the files.
# Since we need to import from there, we also add it to the beginning
# of sys.path.
shutil.copytree(
nice_file(TESTS_DIR, "modules"),
"tests_dir_modules",
ignore=shutil.ignore_patterns("__pycache__"),
)
sys.path.insert(0, abs_file("tests_dir_modules"))
def coverage_usepkgs(self, **kwargs):
"""Run coverage on usepkgs and return the line summary.
Arguments are passed to the `coverage.Coverage` constructor.
"""
cov = coverage.Coverage(**kwargs)
cov.start()
import usepkgs # pragma: nested # pylint: disable=import-error, unused-import
cov.stop() # pragma: nested
with self.assert_warnings(cov, []):
data = cov.get_data()
summary = line_counts(data)
for k, v in list(summary.items()):
assert k.endswith(".py")
summary[k[:-3]] = v
return summary
def test_source_include_exclusive(self):
cov = coverage.Coverage(source=["pkg1"], include=["pkg2"])
with self.assert_warnings(cov, ["--include is ignored because --source is set"]):
cov.start()
cov.stop() # pragma: nested
def test_source_package_as_package(self):
assert not os.path.isdir("pkg1")
lines = self.coverage_usepkgs(source=["pkg1"])
self.filenames_in(lines, "p1a p1b")
self.filenames_not_in(lines, "p2a p2b othera otherb osa osb")
# Because source= was specified, we do search for unexecuted files.
assert lines['p1c'] == 0
def test_source_package_as_dir(self):
os.chdir("tests_dir_modules")
assert os.path.isdir("pkg1")
lines = self.coverage_usepkgs(source=["pkg1"])
self.filenames_in(lines, "p1a p1b")
self.filenames_not_in(lines, "p2a p2b othera otherb osa osb")
# Because source= was specified, we do search for unexecuted files.
assert lines['p1c'] == 0
def test_source_package_dotted_sub(self):
lines = self.coverage_usepkgs(source=["pkg1.sub"])
self.filenames_not_in(lines, "p2a p2b othera otherb osa osb")
# Because source= was specified, we do search for unexecuted files.
assert lines['runmod3'] == 0
def test_source_package_dotted_p1b(self):
lines = self.coverage_usepkgs(source=["pkg1.p1b"])
self.filenames_in(lines, "p1b")
self.filenames_not_in(lines, "p1a p1c p2a p2b othera otherb osa osb")
def test_source_package_part_omitted(self):
# https://github.com/nedbat/coveragepy/issues/218
# Used to be if you omitted something executed and inside the source,
# then after it was executed but not recorded, it would be found in
# the search for unexecuted files, and given a score of 0%.
# The omit arg is by path, so need to be in the modules directory.
os.chdir("tests_dir_modules")
lines = self.coverage_usepkgs(source=["pkg1"], omit=["pkg1/p1b.py"])
self.filenames_in(lines, "p1a")
self.filenames_not_in(lines, "p1b")
assert lines['p1c'] == 0
def test_source_package_as_package_part_omitted(self):
# https://github.com/nedbat/coveragepy/issues/638
lines = self.coverage_usepkgs(source=["pkg1"], omit=["*/p1b.py"])
self.filenames_in(lines, "p1a")
self.filenames_not_in(lines, "p1b")
assert lines['p1c'] == 0
def test_ambiguous_source_package_as_dir(self):
# pkg1 is a directory and a pkg, since we cd into tests_dir_modules/ambiguous
os.chdir("tests_dir_modules/ambiguous")
# pkg1 defaults to directory because tests_dir_modules/ambiguous/pkg1 exists
lines = self.coverage_usepkgs(source=["pkg1"])
self.filenames_in(lines, "ambiguous")
self.filenames_not_in(lines, "p1a p1b p1c")
def test_ambiguous_source_package_as_package(self):
# pkg1 is a directory and a pkg, since we cd into tests_dir_modules/ambiguous
os.chdir("tests_dir_modules/ambiguous")
lines = self.coverage_usepkgs(source_pkgs=["pkg1"])
self.filenames_in(lines, "p1a p1b")
self.filenames_not_in(lines, "p2a p2b othera otherb osa osb ambiguous")
# Because source= was specified, we do search for unexecuted files.
assert lines['p1c'] == 0
class ReportIncludeOmitTest(IncludeOmitTestsMixin, CoverageTest):
"""Tests of the report include/omit functionality."""
def coverage_usepkgs(self, **kwargs):
"""Try coverage.report()."""
cov = coverage.Coverage()
cov.start()
import usepkgs # pragma: nested # pylint: disable=import-error, unused-import
cov.stop() # pragma: nested
report = io.StringIO()
cov.report(file=report, **kwargs)
return report.getvalue()
class XmlIncludeOmitTest(IncludeOmitTestsMixin, CoverageTest):
"""Tests of the XML include/omit functionality.
This also takes care of the HTML and annotate include/omit, by virtue
of the structure of the code.
"""
def coverage_usepkgs(self, **kwargs):
"""Try coverage.xml_report()."""
cov = coverage.Coverage()
cov.start()
import usepkgs # pragma: nested # pylint: disable=import-error, unused-import
cov.stop() # pragma: nested
cov.xml_report(outfile="-", **kwargs)
return self.stdout()
class AnalysisTest(CoverageTest):
"""Test the numerical analysis of results."""
def test_many_missing_branches(self):
cov = coverage.Coverage(branch=True)
self.make_file("missing.py", """\
def fun1(x):
if x == 1:
print("one")
else:
print("not one")
print("done") # pragma: nocover
def fun2(x):
print("x")
fun2(3)
""")
# Import the Python file, executing it.
self.start_import_stop(cov, "missing")
nums = cov._analyze("missing.py").numbers
assert nums.n_files == 1
assert nums.n_statements == 7
assert nums.n_excluded == 1
assert nums.n_missing == 3
assert nums.n_branches == 2
assert nums.n_partial_branches == 0
assert nums.n_missing_branches == 2
class TestRunnerPluginTest(CoverageTest):
"""Test that the API works properly the way various third-party plugins call it.
We don't actually use the plugins, but these tests call the API the same
way they do.
"""
def pretend_to_be_nose_with_cover(self, erase=False, cd=False):
"""This is what the nose --with-cover plugin does."""
self.make_file("no_biggie.py", """\
a = 1
b = 2
if b == 1:
c = 4
""")
self.make_file("sub/hold.txt", "")
cov = coverage.Coverage()
if erase:
cov.combine()
cov.erase()
cov.load()
self.start_import_stop(cov, "no_biggie")
if cd:
os.chdir("sub")
cov.combine()
cov.save()
cov.report(["no_biggie.py"], show_missing=True)
assert self.stdout() == textwrap.dedent("""\
Name Stmts Miss Cover Missing
--------------------------------------------
no_biggie.py 4 1 75% 4
--------------------------------------------
TOTAL 4 1 75%
""")
if cd:
os.chdir("..")
def test_nose_plugin(self):
self.pretend_to_be_nose_with_cover()
def test_nose_plugin_with_erase(self):
self.pretend_to_be_nose_with_cover(erase=True)
def test_nose_plugin_with_cd(self):
# https://github.com/nedbat/coveragepy/issues/916
self.pretend_to_be_nose_with_cover(cd=True)
def pretend_to_be_pytestcov(self, append):
"""Act like pytest-cov."""
self.make_file("prog.py", """\
a = 1
b = 2
if b == 1:
c = 4
""")
self.make_file(".coveragerc", """\
[run]
parallel = True
source = .
""")
cov = coverage.Coverage(source=None, branch=None, config_file='.coveragerc')
if append:
cov.load()
else:
cov.erase()
self.start_import_stop(cov, "prog")
cov.combine()
cov.save()
report = io.StringIO()
cov.report(show_missing=None, ignore_errors=True, file=report, skip_covered=None,
skip_empty=None)
assert report.getvalue() == textwrap.dedent("""\
Name Stmts Miss Cover
-----------------------------
prog.py 4 1 75%
-----------------------------
TOTAL 4 1 75%
""")
self.assert_file_count(".coverage", 0)
self.assert_file_count(".coverage.*", 1)
def test_pytestcov_parallel(self):
self.pretend_to_be_pytestcov(append=False)
def test_pytestcov_parallel_append(self):
self.pretend_to_be_pytestcov(append=True)
class ImmutableConfigTest(CoverageTest):
"""Check that reporting methods don't permanently change the configuration."""
def test_config_doesnt_change(self):
self.make_file("simple.py", "a = 1")
cov = coverage.Coverage()
self.start_import_stop(cov, "simple")
assert cov.get_option("report:show_missing") is False
cov.report(show_missing=True)
assert cov.get_option("report:show_missing") is False
class RelativePathTest(CoverageTest):
"""Tests of the relative_files setting."""
def test_moving_stuff(self):
# When using absolute file names, moving the source around results in
# "No source for code" errors while reporting.
self.make_file("foo.py", "a = 1")
cov = coverage.Coverage(source=["."])
self.start_import_stop(cov, "foo")
res = cov.report()
assert res == 100
expected = re.escape("No source for code: '{}'.".format(abs_file("foo.py")))
os.remove("foo.py")
self.make_file("new/foo.py", "a = 1")
shutil.move(".coverage", "new/.coverage")
with change_dir("new"):
cov = coverage.Coverage()
cov.load()
with pytest.raises(NoSource, match=expected):
cov.report()
def test_moving_stuff_with_relative(self):
# When using relative file names, moving the source around is fine.
self.make_file("foo.py", "a = 1")
self.make_file(".coveragerc", """\
[run]
relative_files = true
""")
cov = coverage.Coverage(source=["."])
self.start_import_stop(cov, "foo")
res = cov.report()
assert res == 100
os.remove("foo.py")
self.make_file("new/foo.py", "a = 1")
shutil.move(".coverage", "new/.coverage")
shutil.move(".coveragerc", "new/.coveragerc")
with change_dir("new"):
cov = coverage.Coverage()
cov.load()
res = cov.report()
assert res == 100
def test_combine_relative(self):
self.make_file("foo.py", """\
import mod
a = 1
""")
self.make_file("lib/mod/__init__.py", "x = 1")
self.make_file(".coveragerc", """\
[run]
relative_files = true
""")
sys.path.append("lib")
cov = coverage.Coverage(source=["."], data_suffix=True)
self.start_import_stop(cov, "foo")
cov.save()
self.make_file("dir2/bar.py", "a = 1")
self.make_file("dir2/.coveragerc", """\
[run]
relative_files = true
""")
with change_dir("dir2"):
cov = coverage.Coverage(source=["."], data_suffix=True)
self.start_import_stop(cov, "bar")
cov.save()
shutil.move(glob.glob(".coverage.*")[0], "..")
self.make_file(".coveragerc", """\
[run]
relative_files = true
[paths]
source =
modsrc
*/mod
""")
cov = coverage.Coverage()
cov.combine()
cov.save()
self.make_file("foo.py", "a = 1")
self.make_file("bar.py", "a = 1")
self.make_file("modsrc/__init__.py", "x = 1")
cov = coverage.Coverage()
cov.load()
files = cov.get_data().measured_files()
assert files == {'foo.py', 'bar.py', os_sep('modsrc/__init__.py')}
res = cov.report()
assert res == 100
def test_combine_no_suffix_multiprocessing(self):
self.make_file(".coveragerc", """\
[run]
branch = True
""")
cov = coverage.Coverage(
config_file=".coveragerc",
concurrency="multiprocessing",
data_suffix=False,
)
cov.start()
cov.stop()
# The warning isn't the point of this test, but suppress it.
with pytest.warns(Warning) as warns:
cov.combine()
assert_coverage_warnings(warns, "No data was collected. (no-data-collected)")
cov.save()
self.assert_file_count(".coverage.*", 0)
self.assert_exists(".coverage")
class CombiningTest(CoverageTest):
"""More tests of combining data."""
B_LINES = {"b_or_c.py": [1, 2, 3, 4, 8, 9]}
C_LINES = {"b_or_c.py": [1, 2, 3, 6, 7, 8, 9]}
def make_b_or_c_py(self):
"""Create b_or_c.py, used in a few of these tests."""
# "b_or_c.py b" will run 6 lines.
# "b_or_c.py c" will run 7 lines.
# Together, they run 8 lines.
self.make_file("b_or_c.py", """\
import sys
a = 2
if sys.argv[1] == 'b':
b = 4
else:
c = 6
c2 = 7
d = 8
print('done')
""")
def test_combine_parallel_data(self):
self.make_b_or_c_py()
self.make_data_file(".coverage.b", lines=self.B_LINES)
self.make_data_file(".coverage.c", lines=self.C_LINES)
# Combine the parallel coverage data files into .coverage .
cov = coverage.Coverage()
cov.combine(strict=True)
self.assert_exists(".coverage")
# After combining, there should be only the .coverage file.
self.assert_file_count(".coverage.*", 0)
# Read the coverage file and see that b_or_c.py has all 8 lines
# executed.
data = coverage.CoverageData()
data.read()
assert line_counts(data)['b_or_c.py'] == 8
# Running combine again should fail, because there are no parallel data
# files to combine.
cov = coverage.Coverage()
with pytest.raises(NoDataError, match=r"No data to combine"):
cov.combine(strict=True)
# And the originally combined data is still there.
data = coverage.CoverageData()
data.read()
assert line_counts(data)['b_or_c.py'] == 8
def test_combine_parallel_data_with_a_corrupt_file(self):
self.make_b_or_c_py()
self.make_data_file(".coverage.b", lines=self.B_LINES)
self.make_data_file(".coverage.c", lines=self.C_LINES)
# Make a bogus data file.
self.make_file(".coverage.bad", "This isn't a coverage data file.")
# Combine the parallel coverage data files into .coverage .
cov = coverage.Coverage()
with pytest.warns(Warning) as warns:
cov.combine(strict=True)
assert_coverage_warnings(
warns,
re.compile(
r"Couldn't use data file '.*[/\\]\.coverage\.bad': " + BAD_SQLITE_REGEX
),
)
# After combining, those two should be the only data files.
self.assert_exists(".coverage")
self.assert_exists(".coverage.bad")
self.assert_file_count(".coverage.*", 1)
# Read the coverage file and see that b_or_c.py has all 8 lines
# executed.
data = coverage.CoverageData()
data.read()
assert line_counts(data)['b_or_c.py'] == 8
def test_combine_no_usable_files(self):
# https://github.com/nedbat/coveragepy/issues/629
self.make_b_or_c_py()
self.make_data_file(".coverage", lines=self.B_LINES)
# Make bogus data files.
self.make_file(".coverage.bad1", "This isn't a coverage data file.")
self.make_file(".coverage.bad2", "This isn't a coverage data file.")
# Combine the parallel coverage data files into .coverage, but nothing is readable.
cov = coverage.Coverage()
with pytest.warns(Warning) as warns:
with pytest.raises(NoDataError, match=r"No usable data files"):
cov.combine(strict=True)
warn_rx = re.compile(
r"Couldn't use data file '.*[/\\]\.coverage\.bad[12]': " + BAD_SQLITE_REGEX
)
assert_coverage_warnings(warns, warn_rx, warn_rx)
# After combining, we should have a main file and two parallel files.
self.assert_exists(".coverage")
self.assert_exists(".coverage.bad1")
self.assert_exists(".coverage.bad2")
self.assert_file_count(".coverage.*", 2)
# Read the coverage file and see that b_or_c.py has 6 lines
# executed (we only did b, not c).
data = coverage.CoverageData()
data.read()
assert line_counts(data)['b_or_c.py'] == 6
def test_combine_parallel_data_in_two_steps(self):
self.make_b_or_c_py()
self.make_data_file(".coverage.b", lines=self.B_LINES)
# Combine the (one) parallel coverage data file into .coverage .
cov = coverage.Coverage()
cov.combine(strict=True)
self.assert_exists(".coverage")
self.assert_file_count(".coverage.*", 0)
self.make_data_file(".coverage.c", lines=self.C_LINES)
self.assert_exists(".coverage")
self.assert_file_count(".coverage.*", 1)
# Combine the parallel coverage data files into .coverage .
cov = coverage.Coverage()
cov.load()
cov.combine(strict=True)
# After combining, there should be only the .coverage file.
self.assert_exists(".coverage")
self.assert_file_count(".coverage.*", 0)
# Read the coverage file and see that b_or_c.py has all 8 lines
# executed.
data = coverage.CoverageData()
data.read()
assert line_counts(data)['b_or_c.py'] == 8
def test_combine_parallel_data_no_append(self):
self.make_b_or_c_py()
self.make_data_file(".coverage.b", lines=self.B_LINES)
# Combine the (one) parallel coverage data file into .coverage .
cov = coverage.Coverage()
cov.combine(strict=True)
self.assert_exists(".coverage")
self.assert_file_count(".coverage.*", 0)
self.make_data_file(".coverage.c", lines=self.C_LINES)
# Combine the parallel coverage data files into .coverage, but don't
# use the data in .coverage already.
cov = coverage.Coverage()
cov.combine(strict=True)
# After combining, there should be only the .coverage file.
self.assert_exists(".coverage")
self.assert_file_count(".coverage.*", 0)
# Read the coverage file and see that b_or_c.py has only 7 lines
# because we didn't keep the data from running b.
data = coverage.CoverageData()
data.read()
assert line_counts(data)['b_or_c.py'] == 7
def test_combine_parallel_data_keep(self):
self.make_b_or_c_py()
self.make_data_file(".coverage.b", lines=self.B_LINES)
self.make_data_file(".coverage.c", lines=self.C_LINES)
# Combine the parallel coverage data files into .coverage with the keep flag.
cov = coverage.Coverage()
cov.combine(strict=True, keep=True)
# After combining, the .coverage file & the original combined file should still be there.
self.assert_exists(".coverage")
self.assert_file_count(".coverage.*", 2)
|