Method verify_cache

mypy/test/testcheck.py:277–297

(
        self,
        module_data: list[tuple[str, str, str]],
        manager: build.BuildManager,
        blocker: bool,
        step: int,
    )

            check_test_output_files(testcase, incremental_step, strip_prefix="tmp/")

    def verify_cache(
        self,
        module_data: list[tuple[str, str, str]],
        manager: build.BuildManager,
        blocker: bool,
        step: int,
    ) -> None:
        if not blocker:
            # There should be valid cache metadata for each module except
            # in case of a blocking error in themselves or one of their
            # dependencies.
            modules = self.find_module_files(manager)
            modules.update({module_name: path for module_name, path, text in module_data})
            missing_paths = self.find_missing_cache_files(modules, manager)
            if missing_paths:
                raise AssertionError(f"cache data missing for {missing_paths} on run {step}")
        assert os.path.isfile(os.path.join(manager.options.cache_dir, ".gitignore"))
        cachedir_tag = os.path.join(manager.options.cache_dir, "CACHEDIR.TAG")
        assert os.path.isfile(cachedir_tag)
        with open(cachedir_tag) as f:
            assert f.read().startswith("Signature: 8a477f597d28d172789f06886806bc55")

    def find_module_files(self, manager: build.BuildManager) -> dict[str, str]:
        return {id: module.path for id, module in manager.modules.items()}