add comments for tests

x/observer/keeper/msg_server_add_observer_test.go

@@ -53,6 +53,7 @@ func TestMsgServer_AddObserver(t *testing.T) {
 	})
 
 	t.Run("unable to add observer if observer already exists", func(t *testing.T) {
+		//ARRANGE
 		k, ctx, _, _ := keepertest.ObserverKeeperWithMocks(t, keepertest.ObserverMockOptions{
 			UseAuthorityMock: true,
 		})
@@ -73,7 +74,11 @@ func TestMsgServer_AddObserver(t *testing.T) {
 			ObserverAddress:         observerAddress,
 		}
 		keepertest.MockCheckAuthorization(&authorityMock.Mock, &msg, nil)
+
+		// ACT
 		_, err := srv.AddObserver(wctx, &msg)
+
+		// ASSERT
 		require.ErrorIs(t, err, types.ErrDuplicateObserver)
 	})
 

x/observer/keeper/msg_server_update_observer_test.go

@@ -76,11 +76,11 @@ func TestMsgServer_UpdateObserver(t *testing.T) {
 	t.Run(
 		"unable to update a tombstoned observer if the new address already exists in the observer set",
 		func(t *testing.T) {
+			//ARRANGE
 			k, ctx, _, _ := keepertest.ObserverKeeper(t)
 			srv := keeper.NewMsgServerImpl(*k)
 			// #nosec G404 test purpose - weak randomness is not an issue here
 			r := rand.New(rand.NewSource(9))
-
 			// Set validator in the store
 			validator := sample.Validator(t, r)
 			validatorNew := sample.Validator(t, r)
@@ -104,27 +104,26 @@ func TestMsgServer_UpdateObserver(t *testing.T) {
 			newOperatorAddress, err := types.GetAccAddressFromOperatorAddress(validatorNew.OperatorAddress)
 			require.NoError(t, err)
 
-			count := uint64(0)
-
+			observerList := []string{accAddressOfValidator.String(), newOperatorAddress.String()}
 			k.SetObserverSet(ctx, types.ObserverSet{
-				ObserverList: []string{accAddressOfValidator.String(), newOperatorAddress.String()},
+				ObserverList: observerList,
 			})
-			count = 1
-
 			k.SetNodeAccount(ctx, types.NodeAccount{
 				Operator: accAddressOfValidator.String(),
 			})
-
 			k.SetLastObserverCount(ctx, &types.LastObserverCount{
-				Count: count,
+				Count: uint64(len(observerList)),
 			})
 
+			//ACT
 			_, err = srv.UpdateObserver(sdk.WrapSDKContext(ctx), &types.MsgUpdateObserver{
 				Creator:            accAddressOfValidator.String(),
 				OldObserverAddress: accAddressOfValidator.String(),
 				NewObserverAddress: newOperatorAddress.String(),
 				UpdateReason:       types.ObserverUpdateReason_Tombstoned,
 			})
+
+			// ASSERT
 			require.ErrorContains(t, err, types.ErrDuplicateObserver.Error())
 		},
 	)

x/observer/keeper/observer_set_test.go

@@ -96,17 +96,24 @@ func TestKeeper_UpdateObserverAddress(t *testing.T) {
 		require.Equal(t, newObserverAddress, observerSet.ObserverList[len(observerSet.ObserverList)-1])
 	})
 	t.Run("unable to update observer list if the new list is not valid", func(t *testing.T) {
+		// ARRANGE
 		k, ctx, _, _ := keepertest.ObserverKeeper(t)
 		oldObserverAddress := sample.AccAddress()
 		newObserverAddress := sample.AccAddress()
 		observerSet := sample.ObserverSet(10)
 		observerSet.ObserverList = append(observerSet.ObserverList, []string{oldObserverAddress, newObserverAddress}...)
 
+		// ACT 1
 		err := k.UpdateObserverAddress(ctx, oldObserverAddress, newObserverAddress)
+
+		// ASSERT 1
 		require.ErrorIs(t, err, types.ErrObserverSetNotFound)
-		k.SetObserverSet(ctx, observerSet)
 
+		// ACT 2
+		k.SetObserverSet(ctx, observerSet)
 		err = k.UpdateObserverAddress(ctx, oldObserverAddress, newObserverAddress)
+
+		// ASSERT 2
 		require.ErrorContains(t, err, types.ErrDuplicateObserver.Error())
 	})
 	t.Run("should error if observer address not found", func(t *testing.T) {