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Fix mdtest ignore python code blocks (#20139)

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## Summary

Resolves https://github.com/astral-sh/ty/issues/1103

## Test Plan

Edited `crates/ty_python_semantic/resources/mdtest/literal/boolean.md`
with:

```
# Boolean literals

```python
reveal_type(True)  # revealed: Literal[False]
reveal_type(False)  # revealed: Literal[False]
```

Ran `cargo test -p ty_python_semantic --test mdtest -- mdtest__literal_boolean`

And we get a test failure:

```
running 1 test
test mdtest__literal_boolean ... FAILED

failures:

---- mdtest__literal_boolean stdout ----

boolean.md - Boolean literals (c336e1af3d538acd)

crates/ty_python_semantic/resources/mdtest/literal/boolean.md:4
unmatched assertion: revealed: Literal[False]
crates/ty_python_semantic/resources/mdtest/literal/boolean.md:4
unexpected error: 13 [revealed-type] "Revealed type: `Literal[True]`"

To rerun this specific test, set the environment variable:
MDTEST_TEST_FILTER='boolean.md - Boolean literals (c336e1af3d538acd)'
MDTEST_TEST_FILTER='boolean.md - Boolean literals (c336e1af3d538acd)'
cargo test -p ty_python_semantic --test mdtest --
mdtest__literal_boolean

--------------------------------------------------


thread 'mdtest__literal_boolean' panicked at
crates/ty_test/src/lib.rs:138:5:
Some tests failed.
note: run with `RUST_BACKTRACE=1` environment variable to display a
backtrace


failures:
    mdtest__literal_boolean

test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 263
filtered out; finished in 0.18s

error: test failed, to rerun pass `-p ty_python_semantic --test mdtest`
```

As expected.

And when i checkout main and keep the same mdtest file all tests pass (as the repro).
This commit is contained in:
Matthew Mckee 2025-08-28 17:59:03 +01:00 • committed by GitHub
parent 9363eeca26
commit 166b63ad4d
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4
crates/ty_test/src/lib.rs
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@ -241,7 +241,9 @@ fn run_test(
db.write_file(&full_path, &embedded.code).unwrap();
if !(full_path.starts_with(&src_path) && matches!(embedded.lang, "py" | "pyi")) {
if !(full_path.starts_with(&src_path)
&& matches!(embedded.lang, "py" | "python" | "pyi"))
{
// These files need to be written to the file system (above), but we don't run any checks on them.
return None;
}