summaryrefslogtreecommitdiff
path: root/testing/test_pytester.py
blob: 5823d51155c0dd58273b9fbd4dcb5ea12b04359b (plain)
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
import os
import subprocess
import sys
import time
from pathlib import Path
from types import ModuleType
from typing import List

import _pytest.pytester as pytester_mod
import pytest
from _pytest.config import ExitCode
from _pytest.config import PytestPluginManager
from _pytest.monkeypatch import MonkeyPatch
from _pytest.pytester import CwdSnapshot
from _pytest.pytester import HookRecorder
from _pytest.pytester import LineMatcher
from _pytest.pytester import Pytester
from _pytest.pytester import SysModulesSnapshot
from _pytest.pytester import SysPathsSnapshot
from _pytest.pytester import Testdir


def test_make_hook_recorder(pytester: Pytester) -> None:
    item = pytester.getitem("def test_func(): pass")
    recorder = pytester.make_hook_recorder(item.config.pluginmanager)
    assert not recorder.getfailures()

    # (The silly condition is to fool mypy that the code below this is reachable)
    if 1 + 1 == 2:
        pytest.xfail("internal reportrecorder tests need refactoring")

    class rep:
        excinfo = None
        passed = False
        failed = True
        skipped = False
        when = "call"

    recorder.hook.pytest_runtest_logreport(report=rep)  # type: ignore[attr-defined]
    failures = recorder.getfailures()
    assert failures == [rep]  # type: ignore[comparison-overlap]
    failures = recorder.getfailures()
    assert failures == [rep]  # type: ignore[comparison-overlap]

    class rep2:
        excinfo = None
        passed = False
        failed = False
        skipped = True
        when = "call"

    rep2.passed = False
    rep2.skipped = True
    recorder.hook.pytest_runtest_logreport(report=rep2)  # type: ignore[attr-defined]

    modcol = pytester.getmodulecol("")
    rep3 = modcol.config.hook.pytest_make_collect_report(collector=modcol)
    rep3.passed = False
    rep3.failed = True
    rep3.skipped = False
    recorder.hook.pytest_collectreport(report=rep3)  # type: ignore[attr-defined]

    passed, skipped, failed = recorder.listoutcomes()
    assert not passed and skipped and failed

    numpassed, numskipped, numfailed = recorder.countoutcomes()
    assert numpassed == 0
    assert numskipped == 1
    assert numfailed == 1
    assert len(recorder.getfailedcollections()) == 1

    recorder.unregister()  # type: ignore[attr-defined]
    recorder.clear()
    recorder.hook.pytest_runtest_logreport(report=rep3)  # type: ignore[attr-defined]
    pytest.raises(ValueError, recorder.getfailures)


def test_parseconfig(pytester: Pytester) -> None:
    config1 = pytester.parseconfig()
    config2 = pytester.parseconfig()
    assert config2 is not config1


def test_pytester_runs_with_plugin(pytester: Pytester) -> None:
    pytester.makepyfile(
        """
        pytest_plugins = "pytester"
        def test_hello(pytester):
            assert 1
    """
    )
    result = pytester.runpytest()
    result.assert_outcomes(passed=1)


def test_pytester_with_doctest(pytester: Pytester) -> None:
    """Check that pytester can be used within doctests.

    It used to use `request.function`, which is `None` with doctests."""
    pytester.makepyfile(
        **{
            "sub/t-doctest.py": """
        '''
        >>> import os
        >>> pytester = getfixture("pytester")
        >>> str(pytester.makepyfile("content")).replace(os.sep, '/')
        '.../basetemp/sub.t-doctest0/sub.py'
        '''
    """,
            "sub/__init__.py": "",
        }
    )
    result = pytester.runpytest(
        "-p", "pytester", "--doctest-modules", "sub/t-doctest.py"
    )
    assert result.ret == 0


def test_runresult_assertion_on_xfail(pytester: Pytester) -> None:
    pytester.makepyfile(
        """
        import pytest

        pytest_plugins = "pytester"

        @pytest.mark.xfail
        def test_potato():
            assert False
    """
    )
    result = pytester.runpytest()
    result.assert_outcomes(xfailed=1)
    assert result.ret == 0


def test_runresult_assertion_on_xpassed(pytester: Pytester) -> None:
    pytester.makepyfile(
        """
        import pytest

        pytest_plugins = "pytester"

        @pytest.mark.xfail
        def test_potato():
            assert True
    """
    )
    result = pytester.runpytest()
    result.assert_outcomes(xpassed=1)
    assert result.ret == 0


def test_xpassed_with_strict_is_considered_a_failure(pytester: Pytester) -> None:
    pytester.makepyfile(
        """
        import pytest

        pytest_plugins = "pytester"

        @pytest.mark.xfail(strict=True)
        def test_potato():
            assert True
    """
    )
    result = pytester.runpytest()
    result.assert_outcomes(failed=1)
    assert result.ret != 0


def make_holder():
    class apiclass:
        def pytest_xyz(self, arg):
            """X"""

        def pytest_xyz_noarg(self):
            """X"""

    apimod = type(os)("api")

    def pytest_xyz(arg):
        """X"""

    def pytest_xyz_noarg():
        """X"""

    apimod.pytest_xyz = pytest_xyz  # type: ignore
    apimod.pytest_xyz_noarg = pytest_xyz_noarg  # type: ignore
    return apiclass, apimod


@pytest.mark.parametrize("holder", make_holder())
def test_hookrecorder_basic(holder) -> None:
    pm = PytestPluginManager()
    pm.add_hookspecs(holder)
    rec = HookRecorder(pm)
    pm.hook.pytest_xyz(arg=123)
    call = rec.popcall("pytest_xyz")
    assert call.arg == 123
    assert call._name == "pytest_xyz"
    pytest.raises(pytest.fail.Exception, rec.popcall, "abc")
    pm.hook.pytest_xyz_noarg()
    call = rec.popcall("pytest_xyz_noarg")
    assert call._name == "pytest_xyz_noarg"


def test_makepyfile_unicode(pytester: Pytester) -> None:
    pytester.makepyfile(chr(0xFFFD))


def test_makepyfile_utf8(pytester: Pytester) -> None:
    """Ensure makepyfile accepts utf-8 bytes as input (#2738)"""
    utf8_contents = """
        def setup_function(function):
            mixed_encoding = 'São Paulo'
    """.encode()
    p = pytester.makepyfile(utf8_contents)
    assert "mixed_encoding = 'São Paulo'".encode() in p.read_bytes()


class TestInlineRunModulesCleanup:
    def test_inline_run_test_module_not_cleaned_up(self, pytester: Pytester) -> None:
        test_mod = pytester.makepyfile("def test_foo(): assert True")
        result = pytester.inline_run(str(test_mod))
        assert result.ret == ExitCode.OK
        # rewrite module, now test should fail if module was re-imported
        test_mod.write_text("def test_foo(): assert False")
        result2 = pytester.inline_run(str(test_mod))
        assert result2.ret == ExitCode.TESTS_FAILED

    def spy_factory(self):
        class SysModulesSnapshotSpy:
            instances: List["SysModulesSnapshotSpy"] = []  # noqa: F821

            def __init__(self, preserve=None) -> None:
                SysModulesSnapshotSpy.instances.append(self)
                self._spy_restore_count = 0
                self._spy_preserve = preserve
                self.__snapshot = SysModulesSnapshot(preserve=preserve)

            def restore(self):
                self._spy_restore_count += 1
                return self.__snapshot.restore()

        return SysModulesSnapshotSpy

    def test_inline_run_taking_and_restoring_a_sys_modules_snapshot(
        self, pytester: Pytester, monkeypatch: MonkeyPatch
    ) -> None:
        spy_factory = self.spy_factory()
        monkeypatch.setattr(pytester_mod, "SysModulesSnapshot", spy_factory)
        pytester.syspathinsert()
        original = dict(sys.modules)
        pytester.makepyfile(import1="# you son of a silly person")
        pytester.makepyfile(import2="# my hovercraft is full of eels")
        test_mod = pytester.makepyfile(
            """
            import import1
            def test_foo(): import import2"""
        )
        pytester.inline_run(str(test_mod))
        assert len(spy_factory.instances) == 1
        spy = spy_factory.instances[0]
        assert spy._spy_restore_count == 1
        assert sys.modules == original
        assert all(sys.modules[x] is original[x] for x in sys.modules)

    def test_inline_run_sys_modules_snapshot_restore_preserving_modules(
        self, pytester: Pytester, monkeypatch: MonkeyPatch
    ) -> None:
        spy_factory = self.spy_factory()
        monkeypatch.setattr(pytester_mod, "SysModulesSnapshot", spy_factory)
        test_mod = pytester.makepyfile("def test_foo(): pass")
        pytester.inline_run(str(test_mod))
        spy = spy_factory.instances[0]
        assert not spy._spy_preserve("black_knight")
        assert spy._spy_preserve("zope")
        assert spy._spy_preserve("zope.interface")
        assert spy._spy_preserve("zopelicious")

    def test_external_test_module_imports_not_cleaned_up(
        self, pytester: Pytester
    ) -> None:
        pytester.syspathinsert()
        pytester.makepyfile(imported="data = 'you son of a silly person'")
        import imported

        test_mod = pytester.makepyfile(
            """
            def test_foo():
                import imported
                imported.data = 42"""
        )
        pytester.inline_run(str(test_mod))
        assert imported.data == 42


def test_assert_outcomes_after_pytest_error(pytester: Pytester) -> None:
    pytester.makepyfile("def test_foo(): assert True")

    result = pytester.runpytest("--unexpected-argument")
    with pytest.raises(ValueError, match="Pytest terminal summary report not found"):
        result.assert_outcomes(passed=0)


def test_cwd_snapshot(pytester: Pytester) -> None:
    foo = pytester.mkdir("foo")
    bar = pytester.mkdir("bar")
    os.chdir(foo)
    snapshot = CwdSnapshot()
    os.chdir(bar)
    assert Path().absolute() == bar
    snapshot.restore()
    assert Path().absolute() == foo


class TestSysModulesSnapshot:
    key = "my-test-module"

    def test_remove_added(self) -> None:
        original = dict(sys.modules)
        assert self.key not in sys.modules
        snapshot = SysModulesSnapshot()
        sys.modules[self.key] = ModuleType("something")
        assert self.key in sys.modules
        snapshot.restore()
        assert sys.modules == original

    def test_add_removed(self, monkeypatch: MonkeyPatch) -> None:
        assert self.key not in sys.modules
        monkeypatch.setitem(sys.modules, self.key, ModuleType("something"))
        assert self.key in sys.modules
        original = dict(sys.modules)
        snapshot = SysModulesSnapshot()
        del sys.modules[self.key]
        assert self.key not in sys.modules
        snapshot.restore()
        assert sys.modules == original

    def test_restore_reloaded(self, monkeypatch: MonkeyPatch) -> None:
        assert self.key not in sys.modules
        monkeypatch.setitem(sys.modules, self.key, ModuleType("something"))
        assert self.key in sys.modules
        original = dict(sys.modules)
        snapshot = SysModulesSnapshot()
        sys.modules[self.key] = ModuleType("something else")
        snapshot.restore()
        assert sys.modules == original

    def test_preserve_modules(self, monkeypatch: MonkeyPatch) -> None:
        key = [self.key + str(i) for i in range(3)]
        assert not any(k in sys.modules for k in key)
        for i, k in enumerate(key):
            mod = ModuleType("something" + str(i))
            monkeypatch.setitem(sys.modules, k, mod)
        original = dict(sys.modules)

        def preserve(name):
            return name in (key[0], key[1], "some-other-key")

        snapshot = SysModulesSnapshot(preserve=preserve)
        sys.modules[key[0]] = original[key[0]] = ModuleType("something else0")
        sys.modules[key[1]] = original[key[1]] = ModuleType("something else1")
        sys.modules[key[2]] = ModuleType("something else2")
        snapshot.restore()
        assert sys.modules == original

    def test_preserve_container(self, monkeypatch: MonkeyPatch) -> None:
        original = dict(sys.modules)
        assert self.key not in original
        replacement = dict(sys.modules)
        replacement[self.key] = ModuleType("life of brian")
        snapshot = SysModulesSnapshot()
        monkeypatch.setattr(sys, "modules", replacement)
        snapshot.restore()
        assert sys.modules is replacement
        assert sys.modules == original


@pytest.mark.parametrize("path_type", ("path", "meta_path"))
class TestSysPathsSnapshot:
    other_path = {"path": "meta_path", "meta_path": "path"}

    @staticmethod
    def path(n: int) -> str:
        return "my-dirty-little-secret-" + str(n)

    def test_restore(self, monkeypatch: MonkeyPatch, path_type) -> None:
        other_path_type = self.other_path[path_type]
        for i in range(10):
            assert self.path(i) not in getattr(sys, path_type)
        sys_path = [self.path(i) for i in range(6)]
        monkeypatch.setattr(sys, path_type, sys_path)
        original = list(sys_path)
        original_other = list(getattr(sys, other_path_type))
        snapshot = SysPathsSnapshot()
        transformation = {"source": (0, 1, 2, 3, 4, 5), "target": (6, 2, 9, 7, 5, 8)}
        assert sys_path == [self.path(x) for x in transformation["source"]]
        sys_path[1] = self.path(6)
        sys_path[3] = self.path(7)
        sys_path.append(self.path(8))
        del sys_path[4]
        sys_path[3:3] = [self.path(9)]
        del sys_path[0]
        assert sys_path == [self.path(x) for x in transformation["target"]]
        snapshot.restore()
        assert getattr(sys, path_type) is sys_path
        assert getattr(sys, path_type) == original
        assert getattr(sys, other_path_type) == original_other

    def test_preserve_container(self, monkeypatch: MonkeyPatch, path_type) -> None:
        other_path_type = self.other_path[path_type]
        original_data = list(getattr(sys, path_type))
        original_other = getattr(sys, other_path_type)
        original_other_data = list(original_other)
        new: List[object] = []
        snapshot = SysPathsSnapshot()
        monkeypatch.setattr(sys, path_type, new)
        snapshot.restore()
        assert getattr(sys, path_type) is new
        assert getattr(sys, path_type) == original_data
        assert getattr(sys, other_path_type) is original_other
        assert getattr(sys, other_path_type) == original_other_data


def test_pytester_subprocess(pytester: Pytester) -> None:
    testfile = pytester.makepyfile("def test_one(): pass")
    assert pytester.runpytest_subprocess(testfile).ret == 0


def test_pytester_subprocess_via_runpytest_arg(pytester: Pytester) -> None:
    testfile = pytester.makepyfile(
        """
        def test_pytester_subprocess(pytester):
            import os
            testfile = pytester.makepyfile(
                \"""
                import os
                def test_one():
                    assert {} != os.getpid()
                \""".format(os.getpid())
            )
            assert pytester.runpytest(testfile).ret == 0
        """
    )
    result = pytester.runpytest_inprocess(
        "-p", "pytester", "--runpytest", "subprocess", testfile
    )
    assert result.ret == 0


def test_unicode_args(pytester: Pytester) -> None:
    result = pytester.runpytest("-k", "אבג")
    assert result.ret == ExitCode.NO_TESTS_COLLECTED


def test_pytester_run_no_timeout(pytester: Pytester) -> None:
    testfile = pytester.makepyfile("def test_no_timeout(): pass")
    assert pytester.runpytest_subprocess(testfile).ret == ExitCode.OK


def test_pytester_run_with_timeout(pytester: Pytester) -> None:
    testfile = pytester.makepyfile("def test_no_timeout(): pass")

    timeout = 120

    start = time.time()
    result = pytester.runpytest_subprocess(testfile, timeout=timeout)
    end = time.time()
    duration = end - start

    assert result.ret == ExitCode.OK
    assert duration < timeout


def test_pytester_run_timeout_expires(pytester: Pytester) -> None:
    testfile = pytester.makepyfile(
        """
        import time

        def test_timeout():
            time.sleep(10)"""
    )
    with pytest.raises(pytester.TimeoutExpired):
        pytester.runpytest_subprocess(testfile, timeout=1)


def test_linematcher_with_nonlist() -> None:
    """Test LineMatcher with regard to passing in a set (accidentally)."""
    from _pytest._code.source import Source

    lm = LineMatcher([])
    with pytest.raises(TypeError, match="invalid type for lines2: set"):
        lm.fnmatch_lines(set())  # type: ignore[arg-type]
    with pytest.raises(TypeError, match="invalid type for lines2: dict"):
        lm.fnmatch_lines({})  # type: ignore[arg-type]
    with pytest.raises(TypeError, match="invalid type for lines2: set"):
        lm.re_match_lines(set())  # type: ignore[arg-type]
    with pytest.raises(TypeError, match="invalid type for lines2: dict"):
        lm.re_match_lines({})  # type: ignore[arg-type]
    with pytest.raises(TypeError, match="invalid type for lines2: Source"):
        lm.fnmatch_lines(Source())  # type: ignore[arg-type]
    lm.fnmatch_lines([])
    lm.fnmatch_lines(())
    lm.fnmatch_lines("")
    assert lm._getlines({}) == {}  # type: ignore[arg-type,comparison-overlap]
    assert lm._getlines(set()) == set()  # type: ignore[arg-type,comparison-overlap]
    assert lm._getlines(Source()) == []
    assert lm._getlines(Source("pass\npass")) == ["pass", "pass"]


def test_linematcher_match_failure() -> None:
    lm = LineMatcher(["foo", "foo", "bar"])
    with pytest.raises(pytest.fail.Exception) as e:
        lm.fnmatch_lines(["foo", "f*", "baz"])
    assert e.value.msg is not None
    assert e.value.msg.splitlines() == [
        "exact match: 'foo'",
        "fnmatch: 'f*'",
        "   with: 'foo'",
        "nomatch: 'baz'",
        "    and: 'bar'",
        "remains unmatched: 'baz'",
    ]

    lm = LineMatcher(["foo", "foo", "bar"])
    with pytest.raises(pytest.fail.Exception) as e:
        lm.re_match_lines(["foo", "^f.*", "baz"])
    assert e.value.msg is not None
    assert e.value.msg.splitlines() == [
        "exact match: 'foo'",
        "re.match: '^f.*'",
        "    with: 'foo'",
        " nomatch: 'baz'",
        "     and: 'bar'",
        "remains unmatched: 'baz'",
    ]


def test_linematcher_consecutive() -> None:
    lm = LineMatcher(["1", "", "2"])
    with pytest.raises(pytest.fail.Exception) as excinfo:
        lm.fnmatch_lines(["1", "2"], consecutive=True)
    assert str(excinfo.value).splitlines() == [
        "exact match: '1'",
        "no consecutive match: '2'",
        "   with: ''",
    ]

    lm.re_match_lines(["1", r"\d?", "2"], consecutive=True)
    with pytest.raises(pytest.fail.Exception) as excinfo:
        lm.re_match_lines(["1", r"\d", "2"], consecutive=True)
    assert str(excinfo.value).splitlines() == [
        "exact match: '1'",
        r"no consecutive match: '\\d'",
        "    with: ''",
    ]


@pytest.mark.parametrize("function", ["no_fnmatch_line", "no_re_match_line"])
def test_linematcher_no_matching(function: str) -> None:
    if function == "no_fnmatch_line":
        good_pattern = "*.py OK*"
        bad_pattern = "*X.py OK*"
    else:
        assert function == "no_re_match_line"
        good_pattern = r".*py OK"
        bad_pattern = r".*Xpy OK"

    lm = LineMatcher(
        [
            "cachedir: .pytest_cache",
            "collecting ... collected 1 item",
            "",
            "show_fixtures_per_test.py OK",
            "=== elapsed 1s ===",
        ]
    )

    # check the function twice to ensure we don't accumulate the internal buffer
    for i in range(2):
        with pytest.raises(pytest.fail.Exception) as e:
            func = getattr(lm, function)
            func(good_pattern)
        obtained = str(e.value).splitlines()
        if function == "no_fnmatch_line":
            assert obtained == [
                f"nomatch: '{good_pattern}'",
                "    and: 'cachedir: .pytest_cache'",
                "    and: 'collecting ... collected 1 item'",
                "    and: ''",
                f"fnmatch: '{good_pattern}'",
                "   with: 'show_fixtures_per_test.py OK'",
            ]
        else:
            assert obtained == [
                f" nomatch: '{good_pattern}'",
                "     and: 'cachedir: .pytest_cache'",
                "     and: 'collecting ... collected 1 item'",
                "     and: ''",
                f"re.match: '{good_pattern}'",
                "    with: 'show_fixtures_per_test.py OK'",
            ]

    func = getattr(lm, function)
    func(bad_pattern)  # bad pattern does not match any line: passes


def test_linematcher_no_matching_after_match() -> None:
    lm = LineMatcher(["1", "2", "3"])
    lm.fnmatch_lines(["1", "3"])
    with pytest.raises(pytest.fail.Exception) as e:
        lm.no_fnmatch_line("*")
    assert str(e.value).splitlines() == ["fnmatch: '*'", "   with: '1'"]


def test_linematcher_string_api() -> None:
    lm = LineMatcher(["foo", "bar"])
    assert str(lm) == "foo\nbar"


def test_pytester_addopts_before_testdir(request, monkeypatch: MonkeyPatch) -> None:
    orig = os.environ.get("PYTEST_ADDOPTS", None)
    monkeypatch.setenv("PYTEST_ADDOPTS", "--orig-unused")
    testdir = request.getfixturevalue("testdir")
    assert "PYTEST_ADDOPTS" not in os.environ
    testdir.finalize()
    assert os.environ.get("PYTEST_ADDOPTS") == "--orig-unused"
    monkeypatch.undo()
    assert os.environ.get("PYTEST_ADDOPTS") == orig


def test_run_stdin(pytester: Pytester) -> None:
    with pytest.raises(pytester.TimeoutExpired):
        pytester.run(
            sys.executable,
            "-c",
            "import sys, time; time.sleep(1); print(sys.stdin.read())",
            stdin=subprocess.PIPE,
            timeout=0.1,
        )

    with pytest.raises(pytester.TimeoutExpired):
        result = pytester.run(
            sys.executable,
            "-c",
            "import sys, time; time.sleep(1); print(sys.stdin.read())",
            stdin=b"input\n2ndline",
            timeout=0.1,
        )

    result = pytester.run(
        sys.executable,
        "-c",
        "import sys; print(sys.stdin.read())",
        stdin=b"input\n2ndline",
    )
    assert result.stdout.lines == ["input", "2ndline"]
    assert result.stderr.str() == ""
    assert result.ret == 0


def test_popen_stdin_pipe(pytester: Pytester) -> None:
    proc = pytester.popen(
        [sys.executable, "-c", "import sys; print(sys.stdin.read())"],
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
        stdin=subprocess.PIPE,
    )
    stdin = b"input\n2ndline"
    stdout, stderr = proc.communicate(input=stdin)
    assert stdout.decode("utf8").splitlines() == ["input", "2ndline"]
    assert stderr == b""
    assert proc.returncode == 0


def test_popen_stdin_bytes(pytester: Pytester) -> None:
    proc = pytester.popen(
        [sys.executable, "-c", "import sys; print(sys.stdin.read())"],
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
        stdin=b"input\n2ndline",
    )
    stdout, stderr = proc.communicate()
    assert stdout.decode("utf8").splitlines() == ["input", "2ndline"]
    assert stderr == b""
    assert proc.returncode == 0


def test_popen_default_stdin_stderr_and_stdin_None(pytester: Pytester) -> None:
    # stdout, stderr default to pipes,
    # stdin can be None to not close the pipe, avoiding
    # "ValueError: flush of closed file" with `communicate()`.
    #
    # Wraps the test to make it not hang when run with "-s".
    p1 = pytester.makepyfile(
        '''
        import sys

        def test_inner(pytester):
            p1 = pytester.makepyfile(
                """
                import sys
                print(sys.stdin.read())  # empty
                print('stdout')
                sys.stderr.write('stderr')
                """
            )
            proc = pytester.popen([sys.executable, str(p1)], stdin=None)
            stdout, stderr = proc.communicate(b"ignored")
            assert stdout.splitlines() == [b"", b"stdout"]
            assert stderr.splitlines() == [b"stderr"]
            assert proc.returncode == 0
        '''
    )
    result = pytester.runpytest("-p", "pytester", str(p1))
    assert result.ret == 0


def test_spawn_uses_tmphome(pytester: Pytester) -> None:
    tmphome = str(pytester.path)
    assert os.environ.get("HOME") == tmphome

    pytester._monkeypatch.setenv("CUSTOMENV", "42")

    p1 = pytester.makepyfile(
        """
        import os

        def test():
            assert os.environ["HOME"] == {tmphome!r}
            assert os.environ["CUSTOMENV"] == "42"
        """.format(
            tmphome=tmphome
        )
    )
    child = pytester.spawn_pytest(str(p1))
    out = child.read()
    assert child.wait() == 0, out.decode("utf8")


def test_run_result_repr() -> None:
    outlines = ["some", "normal", "output"]
    errlines = ["some", "nasty", "errors", "happened"]

    # known exit code
    r = pytester_mod.RunResult(1, outlines, errlines, duration=0.5)
    assert (
        repr(r) == "<RunResult ret=ExitCode.TESTS_FAILED len(stdout.lines)=3"
        " len(stderr.lines)=4 duration=0.50s>"
    )

    # unknown exit code: just the number
    r = pytester_mod.RunResult(99, outlines, errlines, duration=0.5)
    assert (
        repr(r) == "<RunResult ret=99 len(stdout.lines)=3"
        " len(stderr.lines)=4 duration=0.50s>"
    )


def test_pytester_outcomes_with_multiple_errors(pytester: Pytester) -> None:
    p1 = pytester.makepyfile(
        """
        import pytest

        @pytest.fixture
        def bad_fixture():
            raise Exception("bad")

        def test_error1(bad_fixture):
            pass

        def test_error2(bad_fixture):
            pass
    """
    )
    result = pytester.runpytest(str(p1))
    result.assert_outcomes(errors=2)

    assert result.parseoutcomes() == {"errors": 2}


def test_parse_summary_line_always_plural() -> None:
    """Parsing summaries always returns plural nouns (#6505)"""
    lines = [
        "some output 1",
        "some output 2",
        "======= 1 failed, 1 passed, 1 warning, 1 error in 0.13s ====",
        "done.",
    ]
    assert pytester_mod.RunResult.parse_summary_nouns(lines) == {
        "errors": 1,
        "failed": 1,
        "passed": 1,
        "warnings": 1,
    }

    lines = [
        "some output 1",
        "some output 2",
        "======= 1 failed, 1 passed, 2 warnings, 2 errors in 0.13s ====",
        "done.",
    ]
    assert pytester_mod.RunResult.parse_summary_nouns(lines) == {
        "errors": 2,
        "failed": 1,
        "passed": 1,
        "warnings": 2,
    }


def test_makefile_joins_absolute_path(pytester: Pytester) -> None:
    absfile = pytester.path / "absfile"
    p1 = pytester.makepyfile(**{str(absfile): ""})
    assert str(p1) == str(pytester.path / "absfile.py")


def test_testtmproot(testdir) -> None:
    """Check test_tmproot is a py.path attribute for backward compatibility."""
    assert testdir.test_tmproot.check(dir=1)


def test_testdir_makefile_dot_prefixes_extension_silently(
    testdir: Testdir,
) -> None:
    """For backwards compat #8192"""
    p1 = testdir.makefile("foo.bar", "")
    assert ".foo.bar" in str(p1)


def test_pytester_makefile_dot_prefixes_extension_with_warning(
    pytester: Pytester,
) -> None:
    with pytest.raises(
        ValueError,
        match="pytester.makefile expects a file extension, try .foo.bar instead of foo.bar",
    ):
        pytester.makefile("foo.bar", "")


def test_testdir_makefile_ext_none_raises_type_error(testdir) -> None:
    """For backwards compat #8192"""
    with pytest.raises(TypeError):
        testdir.makefile(None, "")


def test_testdir_makefile_ext_empty_string_makes_file(testdir) -> None:
    """For backwards compat #8192"""
    p1 = testdir.makefile("", "")
    assert "test_testdir_makefile" in str(p1)