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CHANGES.md

@@ -92,8 +92,8 @@ To be released.
     continuous.  [[#732]]
  -  `Swarm<T>` became to can process more requests at once by creating TURN
     relaying proxy concurrently.  [[#744]]
- -  `Swarm<T>` became to throw `InvalidGenesisBlockException` when receiving the
-    genesis block of other network chain.  [[#746]]
+ -  `Swarm<T>` became to throw `InvalidGenesisBlockException` when receiving
+    block from the nodes that have a different genesis block.  [[#746]]
 
 ### Bug fixes
 

Libplanet.Tests/Net/SwarmTest.cs

@@ -2612,15 +2612,15 @@ BlockChain<DumbAction> MakeBlockChain() => TestUtils.MakeBlockChain(
 
             await swarmA.AddPeersAsync(new[] { swarmB.AsPeer }, null);
             Assert.NotEqual(chainA.Genesis, chainB.Genesis);
-            try
-            {
-                await swarmA.PreloadAsync();
-            }
-            catch (AggregateException exception)
-            {
-                var exceptions = exception.InnerExceptions.OfType<InvalidGenesisBlockException>();
-                Assert.True(exceptions.Any());
-            }
+            Task t = swarmA.PreloadAsync();
+            await Assert.ThrowsAsync<AggregateException>(async () => await t);
+            var exception = t.Exception.InnerException?.InnerException;
+            Assert.IsType<InvalidGenesisBlockException>(exception);
+
+            await StopAsync(swarmA);
+            await StopAsync(swarmB);
+            swarmA.Dispose();
+            swarmB.Dispose();
         }
 
         [Fact(Timeout = Timeout)]