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Fix disappearing errors when re-running dmypy check #14835

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Merged
merged 8 commits into from
Apr 9, 2023
Merged

Fix disappearing errors when re-running dmypy check #14835

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b4569fa
Add test to demonstrate issue #9655
meshy Mar 4, 2023
1831cbd
Prove ignores without error codes also disappear
meshy Mar 12, 2023
6094fc4
Prove possibly-undefined errors disappear
meshy Mar 12, 2023
eac851b
Ensure errors persist after dmypy update
meshy Mar 13, 2023
5bfb6b5
Improve test names
meshy Mar 31, 2023
3d8d2b7
Add new failing tests
meshy Mar 31, 2023
520f8e8
Ensure errors persist after file change
meshy Apr 8, 2023
6c14e7d
Fix no-op file modification on Windows
meshy Apr 9, 2023
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17 changes: 17 additions & 0 deletions test-data/unit/daemon.test
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Original file line number Diff line number Diff line change
Expand Up @@ -522,3 +522,20 @@ class A:
x: int
class B:
x: int

[case testUnusedTypeIgnorePreservedAfterUpdate]
-- Regression test for https://github.com/python/mypy/issues/9655
$ dmypy start -- --warn-unused-ignores --no-error-summary
Daemon started
$ dmypy check -- bar.py
bar.py:2: error: Unused "type: ignore" comment
== Return code: 1
$ dmypy check -- bar.py
bar.py:2: error: Unused "type: ignore" comment
== Return code: 1

[file foo/__init__.py]
[file foo/empty.py]
[file bar.py]
from foo.empty import *
a = 1 # type: ignore