Tests: more fixes, more debugging

StackExchange.Redis.Tests/Failover.cs

@@ -236,8 +236,10 @@ public async Task SubscriptionsSurviveMasterSwitchAsync()
                 Log("B: " + EndPointCollection.ToString(epB));
                 subA.Publish(channel, "A1");
                 subB.Publish(channel, "B1");
-                subA.Ping();
-                subB.Ping();
+                Log("SubA ping: " + subA.Ping());
+                Log("SubB ping: " + subB.Ping());
+                // If redis is under load due to this suite, it may take a moment to send across.
+                await Task.Delay(250).ForAwait();
 
                 Assert.Equal(2, Interlocked.Read(ref aCount));
                 Assert.Equal(2, Interlocked.Read(ref bCount));

StackExchange.Redis.Tests/Performance.cs

@@ -124,7 +124,7 @@ public async Task BasicStringGetPerf()
                 Assert.Equal("some value", asyncVal);
                 // let's allow 20% async overhead
                 // But with a floor, since the base can often be zero
-                Assert.True(asyncTimer.ElapsedMilliseconds <= System.Math.Max(syncTimer.ElapsedMilliseconds * 1.2M, 20));
+                Assert.True(asyncTimer.ElapsedMilliseconds <= System.Math.Max(syncTimer.ElapsedMilliseconds * 1.2M, 50));
             }
         }
     }

StackExchange.Redis.Tests/Scripting.cs

@@ -309,7 +309,7 @@ public void ScriptThrowsErrorInsideTransaction()
 
                     Assert.True(muxer.Wait(complete));
                     Assert.True(a.IsCompleted, a.Status.ToString());
-                    Assert.True(c.IsCompleted);
+                    Assert.True(c.IsCompleted, "State: " + c.Status);
                     Assert.Equal(1L, a.Result);
                     Assert.Equal(2L, c.Result);