Removed unnecessary test for fallbacks with default host

src/IO.Ably.Tests.Shared/Realtime/ConnectionAttemptsInfoSpecs.cs

@@ -57,15 +57,6 @@ public void ShouldSuspend_WhenFirstAttemptEqualOrGreaterThanConnectionStateTtl_S
             state.ShouldSuspend(now.ValueFn).Should().BeTrue("When time is greater than"); // >
         }
 
-        [Fact]
-        public async Task CanAttemptFallback_ShouldBeFalseWithNonDefaultHost()
-        {
-            var client = GetRealtime(opts => opts.RealtimeHost = "test.test.com");
-
-            var result = await client.RestClient.CanFallback(null);
-            result.Should().BeFalse();
-        }
-
         [Theory]
         [InlineData(500)]
         [InlineData(501)]
@@ -84,7 +75,7 @@ public async Task CanAttemptFallback_WithDefaultHostAndAppropriateError_ShouldBe
         public async Task CanAttemptFallback_WhenInternetCheckFails_ShouldBeFalse()
         {
             var client = GetRealtime(internetCheckOk: false);
-            var result = await client.RestClient.CanFallback(null);
+            var result = await client.RestClient.CanFallback(ErrorInfo.ReasonUnknown);
             result.Should().BeFalse();
         }
 

src/IO.Ably.Tests.Shared/Rest/RestSpecs.cs

@@ -607,10 +607,9 @@ public async Task ShouldUseCustomFallbackHostIfProvided()
             [Fact]
             [Trait("spec", "RSC15a")]
             [Trait("spec", "TO3k6")]
-            public async Task ShouldUseProvidedCustomFallbackHostWhenDefaultHostIsDifferent()
+            public async Task ShouldUseProvidedCustomFallbackHostsIrrespectiveOfPrimaryHost()
             {
                 _response.StatusCode = HttpStatusCode.BadGateway;
-                var attemptedList = new List<string>();
                 var fallbackHosts = new[]
                 {
                     "www.example1.com",
@@ -619,18 +618,32 @@ public async Task ShouldUseProvidedCustomFallbackHostWhenDefaultHostIsDifferent(
                     "www.example4.com",
                     "www.example5.com"
                 };
-                var client = CreateClient(options =>
+
+                async Task CheckForAttemptedFallbackHosts(AblyRest client, string primaryHost) {
+                    var attemptedList = new List<string>();
+                    _handler.Requests.Clear();
+                    await Assert.ThrowsAsync<AblyException>(() => MakeAnyRequest(client));
+                    attemptedList.AddRange(_handler.Requests.Select(x => x.RequestUri.Host).ToList());
+
+                    attemptedList.Count.Should().Be(6);
+                    attemptedList[0].Should().Be(primaryHost);
+                    attemptedList.Skip(1).Should().BeEquivalentTo(fallbackHosts);
+                }
+
+                var clientWithDefaultPrimaryHost = CreateClient(options =>
                 {
-                    options.RestHost = "www.primaryhost.com";
                     options.FallbackHosts = fallbackHosts;
                     options.HttpMaxRetryCount = 5;
                 });
-                await Assert.ThrowsAsync<AblyException>(() => MakeAnyRequest(client));
-                attemptedList.AddRange(_handler.Requests.Select(x => x.RequestUri.Host).ToList());
+                await CheckForAttemptedFallbackHosts(clientWithDefaultPrimaryHost, "rest.ably.io");
 
-                attemptedList.Count.Should().Be(6);
-                attemptedList[0].Should().Be("www.primaryhost.com");
-                attemptedList.Skip(1).Should().BeEquivalentTo(fallbackHosts);
+                var clientWithCustomPrimaryHost = CreateClient(options =>
+                {
+                    options.RestHost = "www.primaryhost.com";
+                    options.FallbackHosts = fallbackHosts;
+                    options.HttpMaxRetryCount = 5;
+                });
+                await CheckForAttemptedFallbackHosts(clientWithCustomPrimaryHost, "www.primaryhost.com");
             }
 
             [Fact]