Make sure docs given to decl_module! are passed to the module struct (#4526)

substrate/frame/support/test/tests/system.rs

@@ -1,3 +1,19 @@
+// Copyright 2019 Parity Technologies (UK) Ltd.
+// This file is part of Substrate.
+
+// Substrate is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Substrate is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
+
 use frame_support::codec::{Encode, Decode, EncodeLike};
 
 pub trait Trait: 'static + Eq + Clone {
@@ -12,13 +28,11 @@ pub trait Trait: 'static + Eq + Clone {
 }
 
 frame_support::decl_module! {
-	pub struct Module<T: Trait> for enum Call where origin: T::Origin {
-	}
+	pub struct Module<T: Trait> for enum Call where origin: T::Origin {}
 }
 
 impl<T: Trait> Module<T> {
-	pub fn deposit_event(_event: impl Into<T::Event>) {
-	}
+	pub fn deposit_event(_event: impl Into<T::Event>) {}
 }
 
 frame_support::decl_event!(