mypy: progress on test_plugins.py

3 files changed, 14 insertions, 5 deletions

diff --git a/coverage/config.py b/coverage/config.py
index ee30b8a4..046c1b00 100644
--- a/coverage/config.py
+++ b/coverage/config.py
@@ -20,7 +20,8 @@ from coverage.exceptions import ConfigError
 from coverage.misc import isolate_module, human_sorted_items, substitute_variables
 from coverage.tomlconfig import TomlConfigParser, TomlDecodeError
 from coverage.types import (
-    TConfigurable, TConfigSectionIn, TConfigValueIn, TConfigSectionOut, TConfigValueOut,
+    TConfigurable, TConfigSectionIn, TConfigValueIn, TConfigSectionOut,
+    TConfigValueOut, TPluginConfig,
 )
 
 os = isolate_module(os)
@@ -166,7 +167,7 @@ DEFAULT_PARTIAL_ALWAYS = [
 ]
 
 
-class CoverageConfig(TConfigurable):
+class CoverageConfig(TConfigurable, TPluginConfig):
     """Coverage.py configuration.
 
     The attributes of this class are the various settings that control the
diff --git a/coverage/plugin_support.py b/coverage/plugin_support.py
index 62985a06..4ed02c5c 100644
--- a/coverage/plugin_support.py
+++ b/coverage/plugin_support.py
@@ -12,11 +12,12 @@ import sys
 from types import FrameType
 from typing import Any, Dict, Iterable, Iterator, List, Optional, Set, Tuple, Union
 
-from coverage.config import CoverageConfig
 from coverage.exceptions import PluginError
 from coverage.misc import isolate_module
 from coverage.plugin import CoveragePlugin, FileTracer, FileReporter
-from coverage.types import TArc, TConfigurable, TDebugCtl, TLineNo, TSourceTokenLines
+from coverage.types import (
+    TArc, TConfigurable, TDebugCtl, TLineNo, TPluginConfig, TSourceTokenLines,
+)
 
 os = isolate_module(os)
 
@@ -38,7 +39,7 @@ class Plugins:
     def load_plugins(
         cls,
         modules: Iterable[str],
-        config: CoverageConfig,
+        config: TPluginConfig,
         debug: Optional[TDebugCtl] = None,
     ) -> Plugins:
         """Load plugins from `modules`.
diff --git a/coverage/types.py b/coverage/types.py
index 736269e0..3d21ac9d 100644
--- a/coverage/types.py
+++ b/coverage/types.py
@@ -136,6 +136,13 @@ class TConfigurable(Protocol):
 
         """
 
+class TPluginConfig(Protocol):
+    """Something that can provide options to a plugin."""
+
+    def get_plugin_options(self, plugin: str) -> TConfigSectionOut:
+        """Get the options for a plugin."""
+
+
 ## Parsing
 
 TMorf = Union[ModuleType, str]