schemas: signature required location type checks (#2140)

# Goal
The goal of this PR is ensure `SignatureRequired` is only going to be
used for `Itemized` and `Paginated` locations.

Closes #1874

# Checklist
- [x] Unit Tests added?
- [x] Spec version incremented?

Author: aramikm

pallets/schemas/src/lib.rs

@@ -838,6 +838,13 @@ pub mod pallet {
 					payload_location == PayloadLocation::Itemized,
 				Error::<T>::InvalidSetting
 			);
+			// SignatureRequired is only valid for Itemized and Paginated payload locations
+			ensure!(
+				!settings.contains(&SchemaSetting::SignatureRequired) ||
+					payload_location == PayloadLocation::Itemized ||
+					payload_location == PayloadLocation::Paginated,
+				Error::<T>::InvalidSetting
+			);
 			let schema_name = match optional_schema_name {
 				None => None,
 				Some(name_payload) => {

pallets/schemas/src/tests/other_tests.rs

@@ -756,7 +756,33 @@ fn create_schema_via_governance_v2_with_append_only_setting_and_non_itemized_sho
 		);
 	})
 }
+#[test]
+fn create_schema_via_governance_v2_with_signature_required_setting_and_wrong_location_should_fail()
+{
+	new_test_ext().execute_with(|| {
+		sudo_set_max_schema_size();
+
+		// arrange
+		let settings = vec![SchemaSetting::SignatureRequired];
+		let sender: AccountId = test_public(1);
 
+		for location in vec![PayloadLocation::OnChain, PayloadLocation::IPFS] {
+			// act and assert
+			assert_noop!(
+				SchemasPallet::create_schema_via_governance_v2(
+					RuntimeOrigin::from(pallet_collective::RawOrigin::Members(2, 3)),
+					sender.clone(),
+					create_bounded_schema_vec(r#"{"name":"John Doe"}"#),
+					ModelType::AvroBinary,
+					location,
+					BoundedVec::try_from(settings.clone()).unwrap(),
+					None,
+				),
+				Error::<Test>::InvalidSetting
+			);
+		}
+	})
+}
 /// Test that a request to be a provider, makes the MSA a provider after the council approves it.
 #[test]
 fn propose_to_create_schema_v2_happy_path() {

runtime/frequency/src/lib.rs

@@ -375,7 +375,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("frequency"),
 	impl_name: create_runtime_str!("frequency"),
 	authoring_version: 1,
-	spec_version: 111,
+	spec_version: 112,
 	impl_version: 0,
 	apis: apis::RUNTIME_API_VERSIONS,
 	transaction_version: 1,
@@ -389,7 +389,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("frequency-testnet"),
 	impl_name: create_runtime_str!("frequency"),
 	authoring_version: 1,
-	spec_version: 111,
+	spec_version: 112,
 	impl_version: 0,
 	apis: apis::RUNTIME_API_VERSIONS,
 	transaction_version: 1,