Fix try-runtime follow-chain, try-runtime upgrade tuple tests, cli test utils (#13794)

* new test for try-runtime tuple stuff

* fix

* remove development comment

* formatting

* remove todo comment

* follow-chain working test

* refactor common cli testing utils

* fix comment

* revert Cargo.lock changes

* update Cargo.lock

* improve doc comment

* fix error typo

* update Cargo.lock

* feature gate try-runtime test

* build_substrate cli test util

* feature gate follow_chain tests

* move fn start_node to test-utils

* improve test pkg name

* use tokio Child and Command

* remove redundant import

* fix ci

* fix ci

* don't leave hanging processes

* improved child process cleanup

* use existing KillChildOnDrop

* remove redundant comment

* Update test-utils/cli/src/lib.rs

Co-authored-by: Koute <koute@users.noreply.github.com>

---------

Co-authored-by: kianenigma <kian@parity.io>
Co-authored-by: Koute <koute@users.noreply.github.com>

substrate/frame/support/src/lib.rs

@@ -371,16 +371,14 @@ macro_rules! parameter_types {
 
 			/// Set the value of this parameter type in the storage.
 			///
-			/// This needs to be executed in an externalities provided
-			/// environment.
+			/// This needs to be executed in an externalities provided environment.
 			pub fn set(value: &$type) {
 				$crate::storage::unhashed::put(&Self::key(), value);
 			}
 
 			/// Returns the value of this parameter type.
 			///
-			/// This needs to be executed in an externalities provided
-			/// environment.
+			/// This needs to be executed in an externalities provided environment.
 			#[allow(unused)]
 			pub fn get() -> $type {
 				$crate::storage::unhashed::get(&Self::key()).unwrap_or_else(|| $value)

substrate/frame/support/src/traits/hooks.rs

@@ -197,10 +197,10 @@ impl OnRuntimeUpgrade for Tuple {
 		weight
 	}
 
-	#[cfg(feature = "try-runtime")]
 	/// We are executing pre- and post-checks sequentially in order to be able to test several
 	/// consecutive migrations for the same pallet without errors. Therefore pre and post upgrade
 	/// hooks for tuples are a noop.
+	#[cfg(feature = "try-runtime")]
 	fn try_on_runtime_upgrade(checks: bool) -> Result<Weight, &'static str> {
 		let mut weight = Weight::zero();
 		for_tuples!( #( weight = weight.saturating_add(Tuple::try_on_runtime_upgrade(checks)?); )* );
@@ -364,10 +364,64 @@ pub trait OnTimestampSet<Moment> {
 #[cfg(test)]
 mod tests {
 	use super::*;
+	use sp_io::TestExternalities;
+
+	#[cfg(feature = "try-runtime")]
+	#[test]
+	fn on_runtime_upgrade_pre_post_executed_tuple() {
+		crate::parameter_types! {
+			pub static Pre: Vec<&'static str> = Default::default();
+			pub static Post: Vec<&'static str> = Default::default();
+		}
+
+		macro_rules! impl_test_type {
+			($name:ident) => {
+				struct $name;
+				impl OnRuntimeUpgrade for $name {
+					fn on_runtime_upgrade() -> Weight {
+						Default::default()
+					}
+
+					#[cfg(feature = "try-runtime")]
+					fn pre_upgrade() -> Result<Vec<u8>, &'static str> {
+						Pre::mutate(|s| s.push(stringify!($name)));
+						Ok(Vec::new())
+					}
+
+					#[cfg(feature = "try-runtime")]
+					fn post_upgrade(_: Vec<u8>) -> Result<(), &'static str> {
+						Post::mutate(|s| s.push(stringify!($name)));
+						Ok(())
+					}
+				}
+			};
+		}
+
+		impl_test_type!(Foo);
+		impl_test_type!(Bar);
+		impl_test_type!(Baz);
+
+		TestExternalities::default().execute_with(|| {
+			Foo::try_on_runtime_upgrade(true).unwrap();
+			assert_eq!(Pre::take(), vec!["Foo"]);
+			assert_eq!(Post::take(), vec!["Foo"]);
+
+			<(Foo, Bar, Baz)>::try_on_runtime_upgrade(true).unwrap();
+			assert_eq!(Pre::take(), vec!["Foo", "Bar", "Baz"]);
+			assert_eq!(Post::take(), vec!["Foo", "Bar", "Baz"]);
+
+			<((Foo, Bar), Baz)>::try_on_runtime_upgrade(true).unwrap();
+			assert_eq!(Pre::take(), vec!["Foo", "Bar", "Baz"]);
+			assert_eq!(Post::take(), vec!["Foo", "Bar", "Baz"]);
+
+			<(Foo, (Bar, Baz))>::try_on_runtime_upgrade(true).unwrap();
+			assert_eq!(Pre::take(), vec!["Foo", "Bar", "Baz"]);
+			assert_eq!(Post::take(), vec!["Foo", "Bar", "Baz"]);
+		});
+	}
 
 	#[test]
 	fn on_initialize_and_on_runtime_upgrade_weight_merge_works() {
-		use sp_io::TestExternalities;
 		struct Test;
 
 		impl OnInitialize<u8> for Test {