Update accelerated logs terminology and add unit tests for tier behavior

Author: ShawnXxy

src/azure-cli/azure/cli/command_modules/mysql/_params.py

@@ -119,7 +119,7 @@ def load_arguments(self, _):    # pylint: disable=too-many-statements, too-many-
     accelerated_logs_arg_type = CLIArgumentType(
         arg_type=get_enum_type(['Enabled', 'Disabled']),
         options_list=['--accelerated-logs'],
-        help='Enable or disable accelerated logs. Supported only for the Memory Optimized tier. Default value is Enabled.'
+        help='Enable or disable accelerated logs. Supported for General Purpose and Memory Optimized tiers.'
     )
 
     faster_restore_arg_type = CLIArgumentType(

src/azure-cli/azure/cli/command_modules/mysql/tests/latest/test_mysql_custom.py

@@ -34,6 +34,23 @@ def test_firewall_rule_create_uses_properties_payload(self):
         }, client.parameters.as_dict())
 
 
+class MysqlAcceleratedLogsCustomTest(unittest.TestCase):
+
+    def test_accelerated_logs_tier_behavior(self):
+        self.assertEqual(
+            'Enabled',
+            custom._determine_acceleratedLogs('Enabled', 'GeneralPurpose'))
+        self.assertEqual(
+            'Disabled',
+            custom._determine_acceleratedLogs(None, 'GeneralPurpose'))
+        self.assertEqual(
+            'Enabled',
+            custom._determine_acceleratedLogs(None, 'MemoryOptimized'))
+        self.assertEqual(
+            'Disabled',
+            custom._determine_acceleratedLogs('Enabled', 'Burstable'))
+
+
 class MysqlFlexibleServerListSkusCustomTest(unittest.TestCase):
 
     def test_list_skus_preserves_memory_optimized_tier(self):