620 lines
22 KiB
Python
620 lines
22 KiB
Python
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# Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
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# For details: https://github.com/nedbat/coveragepy/blob/master/NOTICE.txt
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"""Config file for coverage.py"""
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from __future__ import annotations
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import collections
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import configparser
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import copy
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import os
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import os.path
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import re
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from typing import (
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Any, Callable, Dict, Iterable, List, Optional, Tuple, Union,
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)
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from coverage.exceptions import ConfigError
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from coverage.misc import isolate_module, human_sorted_items, substitute_variables
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from coverage.tomlconfig import TomlConfigParser, TomlDecodeError
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from coverage.types import (
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TConfigurable, TConfigSectionIn, TConfigValueIn, TConfigSectionOut,
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TConfigValueOut, TPluginConfig,
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)
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os = isolate_module(os)
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class HandyConfigParser(configparser.ConfigParser):
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"""Our specialization of ConfigParser."""
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def __init__(self, our_file: bool) -> None:
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"""Create the HandyConfigParser.
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`our_file` is True if this config file is specifically for coverage,
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False if we are examining another config file (tox.ini, setup.cfg)
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for possible settings.
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"""
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super().__init__(interpolation=None)
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self.section_prefixes = ["coverage:"]
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if our_file:
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self.section_prefixes.append("")
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def read( # type: ignore[override]
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self,
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filenames: Iterable[str],
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encoding_unused: Optional[str] = None,
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) -> List[str]:
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"""Read a file name as UTF-8 configuration data."""
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return super().read(filenames, encoding="utf-8")
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def real_section(self, section: str) -> Optional[str]:
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"""Get the actual name of a section."""
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for section_prefix in self.section_prefixes:
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real_section = section_prefix + section
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has = super().has_section(real_section)
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if has:
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return real_section
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return None
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def has_option(self, section: str, option: str) -> bool:
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real_section = self.real_section(section)
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if real_section is not None:
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return super().has_option(real_section, option)
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return False
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def has_section(self, section: str) -> bool:
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return bool(self.real_section(section))
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def options(self, section: str) -> List[str]:
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real_section = self.real_section(section)
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if real_section is not None:
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return super().options(real_section)
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raise ConfigError(f"No section: {section!r}")
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def get_section(self, section: str) -> TConfigSectionOut:
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"""Get the contents of a section, as a dictionary."""
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d: Dict[str, TConfigValueOut] = {}
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for opt in self.options(section):
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d[opt] = self.get(section, opt)
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return d
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def get(self, section: str, option: str, *args: Any, **kwargs: Any) -> str: # type: ignore
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"""Get a value, replacing environment variables also.
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The arguments are the same as `ConfigParser.get`, but in the found
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value, ``$WORD`` or ``${WORD}`` are replaced by the value of the
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environment variable ``WORD``.
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Returns the finished value.
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"""
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for section_prefix in self.section_prefixes:
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real_section = section_prefix + section
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if super().has_option(real_section, option):
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break
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else:
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raise ConfigError(f"No option {option!r} in section: {section!r}")
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v: str = super().get(real_section, option, *args, **kwargs)
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v = substitute_variables(v, os.environ)
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return v
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def getlist(self, section: str, option: str) -> List[str]:
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"""Read a list of strings.
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The value of `section` and `option` is treated as a comma- and newline-
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separated list of strings. Each value is stripped of white space.
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Returns the list of strings.
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"""
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value_list = self.get(section, option)
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values = []
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for value_line in value_list.split("\n"):
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for value in value_line.split(","):
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value = value.strip()
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if value:
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values.append(value)
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return values
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def getregexlist(self, section: str, option: str) -> List[str]:
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"""Read a list of full-line regexes.
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The value of `section` and `option` is treated as a newline-separated
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list of regexes. Each value is stripped of white space.
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Returns the list of strings.
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"""
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line_list = self.get(section, option)
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value_list = []
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for value in line_list.splitlines():
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value = value.strip()
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try:
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re.compile(value)
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except re.error as e:
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raise ConfigError(
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f"Invalid [{section}].{option} value {value!r}: {e}"
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) from e
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if value:
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value_list.append(value)
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return value_list
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TConfigParser = Union[HandyConfigParser, TomlConfigParser]
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# The default line exclusion regexes.
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DEFAULT_EXCLUDE = [
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r"#\s*(pragma|PRAGMA)[:\s]?\s*(no|NO)\s*(cover|COVER)",
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]
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# The default partial branch regexes, to be modified by the user.
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DEFAULT_PARTIAL = [
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r"#\s*(pragma|PRAGMA)[:\s]?\s*(no|NO)\s*(branch|BRANCH)",
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]
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# The default partial branch regexes, based on Python semantics.
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# These are any Python branching constructs that can't actually execute all
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# their branches.
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DEFAULT_PARTIAL_ALWAYS = [
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"while (True|1|False|0):",
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"if (True|1|False|0):",
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]
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class CoverageConfig(TConfigurable, TPluginConfig):
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"""Coverage.py configuration.
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The attributes of this class are the various settings that control the
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operation of coverage.py.
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"""
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# pylint: disable=too-many-instance-attributes
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def __init__(self) -> None:
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"""Initialize the configuration attributes to their defaults."""
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# Metadata about the config.
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# We tried to read these config files.
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self.attempted_config_files: List[str] = []
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# We did read these config files, but maybe didn't find any content for us.
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self.config_files_read: List[str] = []
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# The file that gave us our configuration.
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self.config_file: Optional[str] = None
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self._config_contents: Optional[bytes] = None
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# Defaults for [run] and [report]
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self._include = None
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self._omit = None
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# Defaults for [run]
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self.branch = False
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self.command_line: Optional[str] = None
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self.concurrency: List[str] = []
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self.context: Optional[str] = None
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self.cover_pylib = False
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self.data_file = ".coverage"
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self.debug: List[str] = []
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self.debug_file: Optional[str] = None
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self.disable_warnings: List[str] = []
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self.dynamic_context: Optional[str] = None
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self.parallel = False
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self.plugins: List[str] = []
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self.relative_files = False
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self.run_include: List[str] = []
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self.run_omit: List[str] = []
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self.sigterm = False
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self.source: Optional[List[str]] = None
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self.source_pkgs: List[str] = []
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self.timid = False
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self._crash: Optional[str] = None
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# Defaults for [report]
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self.exclude_list = DEFAULT_EXCLUDE[:]
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self.exclude_also: List[str] = []
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self.fail_under = 0.0
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self.format: Optional[str] = None
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self.ignore_errors = False
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self.include_namespace_packages = False
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self.report_include: Optional[List[str]] = None
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self.report_omit: Optional[List[str]] = None
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self.partial_always_list = DEFAULT_PARTIAL_ALWAYS[:]
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self.partial_list = DEFAULT_PARTIAL[:]
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self.precision = 0
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self.report_contexts: Optional[List[str]] = None
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self.show_missing = False
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self.skip_covered = False
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self.skip_empty = False
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self.sort: Optional[str] = None
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# Defaults for [html]
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self.extra_css: Optional[str] = None
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self.html_dir = "htmlcov"
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self.html_skip_covered: Optional[bool] = None
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self.html_skip_empty: Optional[bool] = None
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self.html_title = "Coverage report"
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self.show_contexts = False
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# Defaults for [xml]
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self.xml_output = "coverage.xml"
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self.xml_package_depth = 99
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# Defaults for [json]
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self.json_output = "coverage.json"
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self.json_pretty_print = False
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self.json_show_contexts = False
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# Defaults for [lcov]
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self.lcov_output = "coverage.lcov"
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# Defaults for [paths]
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self.paths: Dict[str, List[str]] = {}
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# Options for plugins
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self.plugin_options: Dict[str, TConfigSectionOut] = {}
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MUST_BE_LIST = {
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"debug", "concurrency", "plugins",
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"report_omit", "report_include",
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"run_omit", "run_include",
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}
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def from_args(self, **kwargs: TConfigValueIn) -> None:
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"""Read config values from `kwargs`."""
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for k, v in kwargs.items():
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if v is not None:
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if k in self.MUST_BE_LIST and isinstance(v, str):
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v = [v]
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setattr(self, k, v)
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def from_file(self, filename: str, warn: Callable[[str], None], our_file: bool) -> bool:
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"""Read configuration from a .rc file.
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`filename` is a file name to read.
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`our_file` is True if this config file is specifically for coverage,
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False if we are examining another config file (tox.ini, setup.cfg)
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for possible settings.
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Returns True or False, whether the file could be read, and it had some
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coverage.py settings in it.
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"""
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_, ext = os.path.splitext(filename)
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cp: TConfigParser
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if ext == ".toml":
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cp = TomlConfigParser(our_file)
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else:
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cp = HandyConfigParser(our_file)
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self.attempted_config_files.append(filename)
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try:
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files_read = cp.read(filename)
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except (configparser.Error, TomlDecodeError) as err:
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raise ConfigError(f"Couldn't read config file {filename}: {err}") from err
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if not files_read:
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return False
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self.config_files_read.extend(map(os.path.abspath, files_read))
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any_set = False
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try:
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for option_spec in self.CONFIG_FILE_OPTIONS:
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was_set = self._set_attr_from_config_option(cp, *option_spec)
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if was_set:
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any_set = True
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except ValueError as err:
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raise ConfigError(f"Couldn't read config file {filename}: {err}") from err
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# Check that there are no unrecognized options.
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all_options = collections.defaultdict(set)
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for option_spec in self.CONFIG_FILE_OPTIONS:
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section, option = option_spec[1].split(":")
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all_options[section].add(option)
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for section, options in all_options.items():
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real_section = cp.real_section(section)
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if real_section:
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for unknown in set(cp.options(section)) - options:
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warn(
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"Unrecognized option '[{}] {}=' in config file {}".format(
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real_section, unknown, filename
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)
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)
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# [paths] is special
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if cp.has_section("paths"):
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for option in cp.options("paths"):
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self.paths[option] = cp.getlist("paths", option)
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any_set = True
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# plugins can have options
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for plugin in self.plugins:
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if cp.has_section(plugin):
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self.plugin_options[plugin] = cp.get_section(plugin)
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any_set = True
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# Was this file used as a config file? If it's specifically our file,
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# then it was used. If we're piggybacking on someone else's file,
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# then it was only used if we found some settings in it.
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if our_file:
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used = True
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else:
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used = any_set
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if used:
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self.config_file = os.path.abspath(filename)
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with open(filename, "rb") as f:
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self._config_contents = f.read()
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return used
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def copy(self) -> CoverageConfig:
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"""Return a copy of the configuration."""
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return copy.deepcopy(self)
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CONCURRENCY_CHOICES = {"thread", "gevent", "greenlet", "eventlet", "multiprocessing"}
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CONFIG_FILE_OPTIONS = [
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# These are *args for _set_attr_from_config_option:
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# (attr, where, type_="")
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#
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# attr is the attribute to set on the CoverageConfig object.
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# where is the section:name to read from the configuration file.
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# type_ is the optional type to apply, by using .getTYPE to read the
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# configuration value from the file.
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# [run]
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("branch", "run:branch", "boolean"),
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("command_line", "run:command_line"),
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("concurrency", "run:concurrency", "list"),
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("context", "run:context"),
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|
("cover_pylib", "run:cover_pylib", "boolean"),
|
||
|
|
("data_file", "run:data_file"),
|
||
|
|
("debug", "run:debug", "list"),
|
||
|
|
("debug_file", "run:debug_file"),
|
||
|
|
("disable_warnings", "run:disable_warnings", "list"),
|
||
|
|
("dynamic_context", "run:dynamic_context"),
|
||
|
|
("parallel", "run:parallel", "boolean"),
|
||
|
|
("plugins", "run:plugins", "list"),
|
||
|
|
("relative_files", "run:relative_files", "boolean"),
|
||
|
|
("run_include", "run:include", "list"),
|
||
|
|
("run_omit", "run:omit", "list"),
|
||
|
|
("sigterm", "run:sigterm", "boolean"),
|
||
|
|
("source", "run:source", "list"),
|
||
|
|
("source_pkgs", "run:source_pkgs", "list"),
|
||
|
|
("timid", "run:timid", "boolean"),
|
||
|
|
("_crash", "run:_crash"),
|
||
|
|
|
||
|
|
# [report]
|
||
|
|
("exclude_list", "report:exclude_lines", "regexlist"),
|
||
|
|
("exclude_also", "report:exclude_also", "regexlist"),
|
||
|
|
("fail_under", "report:fail_under", "float"),
|
||
|
|
("format", "report:format", "boolean"),
|
||
|
|
("ignore_errors", "report:ignore_errors", "boolean"),
|
||
|
|
("include_namespace_packages", "report:include_namespace_packages", "boolean"),
|
||
|
|
("partial_always_list", "report:partial_branches_always", "regexlist"),
|
||
|
|
("partial_list", "report:partial_branches", "regexlist"),
|
||
|
|
("precision", "report:precision", "int"),
|
||
|
|
("report_contexts", "report:contexts", "list"),
|
||
|
|
("report_include", "report:include", "list"),
|
||
|
|
("report_omit", "report:omit", "list"),
|
||
|
|
("show_missing", "report:show_missing", "boolean"),
|
||
|
|
("skip_covered", "report:skip_covered", "boolean"),
|
||
|
|
("skip_empty", "report:skip_empty", "boolean"),
|
||
|
|
("sort", "report:sort"),
|
||
|
|
|
||
|
|
# [html]
|
||
|
|
("extra_css", "html:extra_css"),
|
||
|
|
("html_dir", "html:directory"),
|
||
|
|
("html_skip_covered", "html:skip_covered", "boolean"),
|
||
|
|
("html_skip_empty", "html:skip_empty", "boolean"),
|
||
|
|
("html_title", "html:title"),
|
||
|
|
("show_contexts", "html:show_contexts", "boolean"),
|
||
|
|
|
||
|
|
# [xml]
|
||
|
|
("xml_output", "xml:output"),
|
||
|
|
("xml_package_depth", "xml:package_depth", "int"),
|
||
|
|
|
||
|
|
# [json]
|
||
|
|
("json_output", "json:output"),
|
||
|
|
("json_pretty_print", "json:pretty_print", "boolean"),
|
||
|
|
("json_show_contexts", "json:show_contexts", "boolean"),
|
||
|
|
|
||
|
|
# [lcov]
|
||
|
|
("lcov_output", "lcov:output"),
|
||
|
|
]
|
||
|
|
|
||
|
|
def _set_attr_from_config_option(
|
||
|
|
self,
|
||
|
|
cp: TConfigParser,
|
||
|
|
attr: str,
|
||
|
|
where: str,
|
||
|
|
type_: str = "",
|
||
|
|
) -> bool:
|
||
|
|
"""Set an attribute on self if it exists in the ConfigParser.
|
||
|
|
|
||
|
|
Returns True if the attribute was set.
|
||
|
|
|
||
|
|
"""
|
||
|
|
section, option = where.split(":")
|
||
|
|
if cp.has_option(section, option):
|
||
|
|
method = getattr(cp, "get" + type_)
|
||
|
|
setattr(self, attr, method(section, option))
|
||
|
|
return True
|
||
|
|
return False
|
||
|
|
|
||
|
|
def get_plugin_options(self, plugin: str) -> TConfigSectionOut:
|
||
|
|
"""Get a dictionary of options for the plugin named `plugin`."""
|
||
|
|
return self.plugin_options.get(plugin, {})
|
||
|
|
|
||
|
|
def set_option(self, option_name: str, value: Union[TConfigValueIn, TConfigSectionIn]) -> None:
|
||
|
|
"""Set an option in the configuration.
|
||
|
|
|
||
|
|
`option_name` is a colon-separated string indicating the section and
|
||
|
|
option name. For example, the ``branch`` option in the ``[run]``
|
||
|
|
section of the config file would be indicated with `"run:branch"`.
|
||
|
|
|
||
|
|
`value` is the new value for the option.
|
||
|
|
|
||
|
|
"""
|
||
|
|
# Special-cased options.
|
||
|
|
if option_name == "paths":
|
||
|
|
self.paths = value # type: ignore
|
||
|
|
return
|
||
|
|
|
||
|
|
# Check all the hard-coded options.
|
||
|
|
for option_spec in self.CONFIG_FILE_OPTIONS:
|
||
|
|
attr, where = option_spec[:2]
|
||
|
|
if where == option_name:
|
||
|
|
setattr(self, attr, value)
|
||
|
|
return
|
||
|
|
|
||
|
|
# See if it's a plugin option.
|
||
|
|
plugin_name, _, key = option_name.partition(":")
|
||
|
|
if key and plugin_name in self.plugins:
|
||
|
|
self.plugin_options.setdefault(plugin_name, {})[key] = value # type: ignore
|
||
|
|
return
|
||
|
|
|
||
|
|
# If we get here, we didn't find the option.
|
||
|
|
raise ConfigError(f"No such option: {option_name!r}")
|
||
|
|
|
||
|
|
def get_option(self, option_name: str) -> Optional[TConfigValueOut]:
|
||
|
|
"""Get an option from the configuration.
|
||
|
|
|
||
|
|
`option_name` is a colon-separated string indicating the section and
|
||
|
|
option name. For example, the ``branch`` option in the ``[run]``
|
||
|
|
section of the config file would be indicated with `"run:branch"`.
|
||
|
|
|
||
|
|
Returns the value of the option.
|
||
|
|
|
||
|
|
"""
|
||
|
|
# Special-cased options.
|
||
|
|
if option_name == "paths":
|
||
|
|
return self.paths # type: ignore
|
||
|
|
|
||
|
|
# Check all the hard-coded options.
|
||
|
|
for option_spec in self.CONFIG_FILE_OPTIONS:
|
||
|
|
attr, where = option_spec[:2]
|
||
|
|
if where == option_name:
|
||
|
|
return getattr(self, attr) # type: ignore
|
||
|
|
|
||
|
|
# See if it's a plugin option.
|
||
|
|
plugin_name, _, key = option_name.partition(":")
|
||
|
|
if key and plugin_name in self.plugins:
|
||
|
|
return self.plugin_options.get(plugin_name, {}).get(key)
|
||
|
|
|
||
|
|
# If we get here, we didn't find the option.
|
||
|
|
raise ConfigError(f"No such option: {option_name!r}")
|
||
|
|
|
||
|
|
def post_process_file(self, path: str) -> str:
|
||
|
|
"""Make final adjustments to a file path to make it usable."""
|
||
|
|
return os.path.expanduser(path)
|
||
|
|
|
||
|
|
def post_process(self) -> None:
|
||
|
|
"""Make final adjustments to settings to make them usable."""
|
||
|
|
self.data_file = self.post_process_file(self.data_file)
|
||
|
|
self.html_dir = self.post_process_file(self.html_dir)
|
||
|
|
self.xml_output = self.post_process_file(self.xml_output)
|
||
|
|
self.paths = dict(
|
||
|
|
(k, [self.post_process_file(f) for f in v])
|
||
|
|
for k, v in self.paths.items()
|
||
|
|
)
|
||
|
|
self.exclude_list += self.exclude_also
|
||
|
|
|
||
|
|
def debug_info(self) -> List[Tuple[str, Any]]:
|
||
|
|
"""Make a list of (name, value) pairs for writing debug info."""
|
||
|
|
return human_sorted_items(
|
||
|
|
(k, v) for k, v in self.__dict__.items() if not k.startswith("_")
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
def config_files_to_try(config_file: Union[bool, str]) -> List[Tuple[str, bool, bool]]:
|
||
|
|
"""What config files should we try to read?
|
||
|
|
|
||
|
|
Returns a list of tuples:
|
||
|
|
(filename, is_our_file, was_file_specified)
|
||
|
|
"""
|
||
|
|
|
||
|
|
# Some API users were specifying ".coveragerc" to mean the same as
|
||
|
|
# True, so make it so.
|
||
|
|
if config_file == ".coveragerc":
|
||
|
|
config_file = True
|
||
|
|
specified_file = (config_file is not True)
|
||
|
|
if not specified_file:
|
||
|
|
# No file was specified. Check COVERAGE_RCFILE.
|
||
|
|
rcfile = os.environ.get("COVERAGE_RCFILE")
|
||
|
|
if rcfile:
|
||
|
|
config_file = rcfile
|
||
|
|
specified_file = True
|
||
|
|
if not specified_file:
|
||
|
|
# Still no file specified. Default to .coveragerc
|
||
|
|
config_file = ".coveragerc"
|
||
|
|
assert isinstance(config_file, str)
|
||
|
|
files_to_try = [
|
||
|
|
(config_file, True, specified_file),
|
||
|
|
("setup.cfg", False, False),
|
||
|
|
("tox.ini", False, False),
|
||
|
|
("pyproject.toml", False, False),
|
||
|
|
]
|
||
|
|
return files_to_try
|
||
|
|
|
||
|
|
|
||
|
|
def read_coverage_config(
|
||
|
|
config_file: Union[bool, str],
|
||
|
|
warn: Callable[[str], None],
|
||
|
|
**kwargs: TConfigValueIn,
|
||
|
|
) -> CoverageConfig:
|
||
|
|
"""Read the coverage.py configuration.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
config_file: a boolean or string, see the `Coverage` class for the
|
||
|
|
tricky details.
|
||
|
|
warn: a function to issue warnings.
|
||
|
|
all others: keyword arguments from the `Coverage` class, used for
|
||
|
|
setting values in the configuration.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
config:
|
||
|
|
config is a CoverageConfig object read from the appropriate
|
||
|
|
configuration file.
|
||
|
|
|
||
|
|
"""
|
||
|
|
# Build the configuration from a number of sources:
|
||
|
|
# 1) defaults:
|
||
|
|
config = CoverageConfig()
|
||
|
|
|
||
|
|
# 2) from a file:
|
||
|
|
if config_file:
|
||
|
|
files_to_try = config_files_to_try(config_file)
|
||
|
|
|
||
|
|
for fname, our_file, specified_file in files_to_try:
|
||
|
|
config_read = config.from_file(fname, warn, our_file=our_file)
|
||
|
|
if config_read:
|
||
|
|
break
|
||
|
|
if specified_file:
|
||
|
|
raise ConfigError(f"Couldn't read {fname!r} as a config file")
|
||
|
|
|
||
|
|
# $set_env.py: COVERAGE_DEBUG - Options for --debug.
|
||
|
|
# 3) from environment variables:
|
||
|
|
env_data_file = os.environ.get("COVERAGE_FILE")
|
||
|
|
if env_data_file:
|
||
|
|
config.data_file = env_data_file
|
||
|
|
debugs = os.environ.get("COVERAGE_DEBUG")
|
||
|
|
if debugs:
|
||
|
|
config.debug.extend(d.strip() for d in debugs.split(","))
|
||
|
|
|
||
|
|
# 4) from constructor arguments:
|
||
|
|
config.from_args(**kwargs)
|
||
|
|
|
||
|
|
# Once all the config has been collected, there's a little post-processing
|
||
|
|
# to do.
|
||
|
|
config.post_process()
|
||
|
|
|
||
|
|
return config
|