Merge pull request #10805 from cheshire/forgotten_env_prefixes

Author: swift-ci

test/lit.cfg

@@ -908,7 +908,12 @@ else:
 # propagated to the calling contexts.
 # In order to make tests OS-agnostic, names of environment variables should be
 # prefixed with `%env-`, which is then expanded to the appropriate prefix.
-ENV_VAR_PREFIXES = {'iphonesimulator': 'SIMCTL_CHILD_'}
+SIMULATOR_ENV_PREFIX = 'SIMCTL_CHILD_'
+ENV_VAR_PREFIXES = {
+    'iphonesimulator': SIMULATOR_ENV_PREFIX,
+    'watchsimulator': SIMULATOR_ENV_PREFIX,
+    'appletvsimulator': SIMULATOR_ENV_PREFIX
+}
 config.substitutions.append(('%env-', ENV_VAR_PREFIXES.get(config.target_sdk_name, "")))
 config.substitutions.append(("%target-sdk-name", config.target_sdk_name))