Add additional uart test coverage (#11571)

tests/components/uart/test.esp32-idf.yaml

@@ -19,3 +19,41 @@ uart:
 
 packet_transport:
   - platform: uart
+
+switch:
+  # Test uart switch with single state (array)
+  - platform: uart
+    name: "UART Switch Single Array"
+    uart_id: uart_uart
+    data: [0x01, 0x02, 0x03]
+  # Test uart switch with single state (string)
+  - platform: uart
+    name: "UART Switch Single String"
+    uart_id: uart_uart
+    data: "ON"
+  # Test uart switch with turn_on/turn_off (arrays)
+  - platform: uart
+    name: "UART Switch Dual Array"
+    uart_id: uart_uart
+    data:
+      turn_on: [0xA0, 0xA1, 0xA2]
+      turn_off: [0xB0, 0xB1, 0xB2]
+  # Test uart switch with turn_on/turn_off (strings)
+  - platform: uart
+    name: "UART Switch Dual String"
+    uart_id: uart_uart
+    data:
+      turn_on: "TURN_ON"
+      turn_off: "TURN_OFF"
+
+button:
+  # Test uart button with array data
+  - platform: uart
+    name: "UART Button Array"
+    uart_id: uart_uart
+    data: [0xFF, 0xEE, 0xDD]
+  # Test uart button with string data
+  - platform: uart
+    name: "UART Button String"
+    uart_id: uart_uart
+    data: "BUTTON_PRESS"

tests/components/uart/test.esp8266-ard.yaml

@@ -13,3 +13,21 @@ uart:
     rx_buffer_size: 512
     parity: EVEN
     stop_bits: 2
+
+switch:
+  - platform: uart
+    name: "UART Switch Array"
+    uart_id: uart_uart
+    data: [0x01, 0x02, 0x03]
+  - platform: uart
+    name: "UART Switch Dual"
+    uart_id: uart_uart
+    data:
+      turn_on: [0xA0, 0xA1]
+      turn_off: [0xB0, 0xB1]
+
+button:
+  - platform: uart
+    name: "UART Button"
+    uart_id: uart_uart
+    data: [0xFF, 0xEE]