do not close the datastore at end of test, because it prevent dht from flushing datastore resulting in an error message (#353)

Author: gammazero

setup_test.go

@@ -156,8 +156,7 @@ func testSeedPeering(t *testing.T, n int, dhtRouting DHTRouting, dhtSharedHost b
 	cdns := newCachedDNS(dnsCacheRefreshInterval)
 	defer cdns.Close()
 
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
+	ctx := t.Context()
 
 	seed, err := newSeed()
 	require.NoError(t, err)
@@ -197,13 +196,6 @@ func testSeedPeering(t *testing.T, n int, dhtRouting DHTRouting, dhtSharedHost b
 		nodes[i], err = SetupWithLibp2p(ctx, cfgs[i], keys[i], cdns)
 		require.NoError(t, err)
 	}
-	t.Cleanup(func() {
-		for _, node := range nodes {
-			if node.datastore != nil {
-				node.datastore.Close()
-			}
-		}
-	})
 
 	require.Eventually(t, func() bool {
 		for i, node := range nodes {