feat(ios): Ensure a simulator with the latest iOS version exists for the given name when testing

Author: matt-oakes

src/commands/ios_simulator_start.yml

@@ -1,4 +1,4 @@
-description: Starts an iOS simulator with the given name.
+description: Creates and starts an iOS simulator with the given name.
 
 parameters:
   device:
@@ -7,6 +7,12 @@ parameters:
     default: "iPhone X"
 
 steps:
+  - run:
+      name: Remove all simulators to avoid conflicts with the one we're going to use
+      command: xcrun simctl list | awk -F “[()]” ‘{ for (i=2; i<NF; i+=2) print $i }’ | grep ‘^[-A-Z0–9]*$’ | xargs -I uuid xcrun simctl delete uuid
+  - run:
+      name: Create the device simulator we need
+      command: xcrun simctl create "<<parameters.device>>" "<<parameters.device>>"
   - run:
       name: Start iOS simulator (background)
       background: true