Adding saved test plan to turn off parallel tests run due to this not working well. Execution of all tests actually takes less time and succeeds 100% of the time if run one by one. My guess it's because of swift 6 concurrency not well adapted for parallel tests.

Author: maratal

AblyChat-Package.xctestplan

@@ -0,0 +1,29 @@
+{
+  "configurations" : [
+    {
+      "id" : "BB83C0AA-ADD6-429F-84A2-39113257A6D4",
+      "name" : "Test Scheme Action",
+      "options" : {
+
+      }
+    }
+  ],
+  "defaultOptions" : {
+    "targetForVariableExpansion" : {
+      "containerPath" : "container:",
+      "identifier" : "BuildTool",
+      "name" : "BuildTool"
+    }
+  },
+  "testTargets" : [
+    {
+      "parallelizable" : false,
+      "target" : {
+        "containerPath" : "container:",
+        "identifier" : "AblyChatTests",
+        "name" : "AblyChatTests"
+      }
+    }
+  ],
+  "version" : 1
+}