Fix/issue 26 : YAML Parsing for Large Config Files

[LucasDedieu]

Fix YAML Parsing for Large Config Files

Description

Support for YAML config files exceeding 4096 characters:
Previously, the library failed to handle YAML files larger than 4096 characters due to limitations in how values were parsed in ConfitYamlLoader. This has been resolved by modifying the construct_object method to use x.value, ensuring robust parsing regardless of file size.

Key Changes:

• Updated ConfitYamlLoader to use x.value for parsing scalar nodes.
• Added test_very_long_yaml_config and test_escaped_string unit tests.

Checklist

• If this PR is a bug fix, the bug is documented in the test suite.
• Changes were documented in the changelog (pending section).
• If necessary, changes were made to the documentation.

[github-actions]

Coverage Report

Name	Stmts	Miss	∆ Miss	Cover
TOTAL	957	18	0	98.12%

Files without new missing coverage

Name	Stmts	Miss	∆ Miss	Cover
confit/utils/settings.py Was already missing at lines 10-12 return bool(loads(value)) - except Exception: - return True	10	2	0	80.00%
confit/registry.py Was already missing at line 119 if name is None and hasattr(e.model, "type_"): - name = e.model.type_.__module__ + "." + e.model.type_.__qualname__ e = ConfitValidationError( Was already missing at lines 479-484 """ - entrypoints = importlib_metadata.entry_points() ... - return entrypoints.get(self.entry_point_namespace, []) Was already missing at line 509 if from_entry_point: - return from_entry_point if not catalogue.check_exists(*path): Was already missing at line 516 ) - return catalogue._get(path)	214	7	0	96.73%
confit/config.py Was already missing at line 126 else: - current = current[part] try: Was already missing at line 155 if resolve: - return config.resolve(registry=registry) Was already missing at line 377 return local_names[parts] + ("." if path.endswith(":") else "") - except KeyError: raise KeyError(path) Was already missing at line 422 if not deep and len(loc) > 1: - return obj Was already missing at line 502 return - current[path] = val Was already missing at line 529 ): - old[key] = new_val else: Was already missing at line 565 elif isinstance(obj, list): - return [rec(v) for v in obj] elif isinstance(obj, tuple): Was already missing at line 567 elif isinstance(obj, tuple): - return tuple(rec(v) for v in obj) elif isinstance(obj, Reference): Was already missing at line 616 if isinstance(config_paths, Path): - config_paths = [config_paths]	306	9	0	97.06%

8 files skipped due to complete coverage.

Coverage success: total of 98.12% is above 98.12% 🎉

[percevalw]

Thank you @LucasDedieu ! I think there is a unwanted side effect to your PR, which was not tested already:

def test_escaped_string():
    config = Config.from_yaml_str("""
section:
    num: 1
    escaped_num: "1"
    escaped_broken_ref: "${test.a"
    escaped_ref: "${test.a}"
""").resolve(registry=registry)
    assert config["section"]["num"] == 1
    assert config["section"]["escaped_num"] == "1"
    assert config["section"]["escaped_broken_ref"] == "${test.a"
    assert config["section"]["escaped_ref"] == "${test.a}"

We want users to be able to "escape" references (or anything else), if what is they really want is to write a string containing ${...}. Could you add this test and verify that your changes pass it ?

[percevalw]

Perfect !