TOML support for pyproject.toml and other config files

Squashed and rebased from https://github.com/nedbat/coveragepy/pull/699

Missing getfloat

TOMLConfigParser -> TomlConfigParser

fix getfloat for int

Move TomlConfigParser

Add name to contributors

Import toml in backward.py

fix indentation

Don't ignore TomlDecodeError

Raise if TomlConfigParser is used without toml installed

Add tests for TOML config

Fix test on Python 2

Mention toml support in documentation.

1 files changed, 13 insertions, 3 deletions

diff --git a/coverage/config.py b/coverage/config.py
index c6689d2d..89a0321e 100644
--- a/coverage/config.py
+++ b/coverage/config.py
@@ -9,10 +9,12 @@ import os
 import re
 
 from coverage import env
-from coverage.backward import configparser, iitems, string_class
+from coverage.backward import configparser, iitems, string_class, toml
 from coverage.misc import contract, CoverageException, isolate_module
 from coverage.misc import substitute_variables
 
+from coverage.tomlconfig import TomlConfigParser, TomlDecodeError
+
 os = isolate_module(os)
 
 
@@ -256,12 +258,19 @@ class CoverageConfig(object):
         coverage.py settings in it.
 
         """
+        _, ext = os.path.splitext(filename)
+        if ext == '.toml':
+            if toml is None:
+                return False
+            cp = TomlConfigParser(our_file)
+        else:
+            cp = HandyConfigParser(our_file)
+
         self.attempted_config_files.append(filename)
 
-        cp = HandyConfigParser(our_file)
         try:
             files_read = cp.read(filename)
-        except configparser.Error as err:
+        except (configparser.Error, TomlDecodeError) as err:
             raise CoverageException("Couldn't read config file %s: %s" % (filename, err))
         if not files_read:
             return False
@@ -473,6 +482,7 @@ def config_files_to_try(config_file):
         config_file = ".coveragerc"
     files_to_try = [
         (config_file, True, specified_file),
+        ("pyproject.toml", False, False),
         ("setup.cfg", False, False),
         ("tox.ini", False, False),
     ]