Merge pull request #156 from blueyed/repr

Add HookImpl.__repr__

Author: goodboy

pluggy/hooks.py

@@ -315,3 +315,9 @@ def __init__(self, plugin, plugin_name, function, hook_impl_opts):
         self.opts = hook_impl_opts
         self.plugin_name = plugin_name
         self.__dict__.update(hook_impl_opts)
+
+    def __repr__(self):
+        return "<HookImpl plugin_name=%r, plugin=%r>" % (
+            self.plugin_name,
+            self.plugin,
+        )

testing/test_details.py

@@ -117,3 +117,20 @@ def myhook(self, arg1):
         warning = warns[-1]
         assert issubclass(warning.category, Warning)
         assert "Argument(s) ('arg2',)" in str(warning.message)
+
+
+def test_repr():
+    class Plugin:
+        @hookimpl
+        def myhook():
+            raise NotImplementedError()
+
+    pm = PluginManager(hookspec.project_name)
+
+    plugin = Plugin()
+    pname = pm.register(plugin)
+    assert repr(pm.hook.myhook._nonwrappers[0]) == (
+        "<HookImpl plugin_name=%r, plugin=%r>" % (
+            pname,
+            plugin,
+        ))