[#280] ir: Add frostfs processor unit tests

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

pkg/morph/event/frostfs/cheque_test.go

@@ -77,10 +77,10 @@ func TestParseCheque(t *testing.T) {
 
 		require.NoError(t, err)
 		require.Equal(t, Cheque{
-			id:     id,
-			amount: amount,
-			user:   user,
-			lock:   lock,
+			IDValue:     id,
+			AmountValue: amount,
+			UserValue:   user,
+			LockValue:   lock,
 		}, ev)
 	})
 }