Wake-on-LAN button (#3030)

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
Co-authored-by: William Charlton <will.charlton1@icloud.com>

tests/component_tests/button/test_button.py

@@ -0,0 +1,46 @@
+"""Tests for the button component"""
+
+
+def test_button_is_setup(generate_main):
+    """
+    When the button is set in the yaml file if should be registered in main
+    """
+    # Given
+
+    # When
+    main_cpp = generate_main("tests/component_tests/button/test_button.yaml")
+
+    # Then
+    assert "new wake_on_lan::WakeOnLanButton();" in main_cpp
+    assert "App.register_button" in main_cpp
+    assert "App.register_component" in main_cpp
+
+
+def test_button_sets_mandatory_fields(generate_main):
+    """
+    When the mandatory fields are set in the yaml, they should be set in main
+    """
+    # Given
+
+    # When
+    main_cpp = generate_main("tests/component_tests/button/test_button.yaml")
+
+    # Then
+    assert 'wol_1->set_name("wol_test_1");' in main_cpp
+    assert "wol_2->set_macaddr(18, 52, 86, 120, 144, 171);" in main_cpp
+
+
+def test_button_config_value_internal_set(generate_main):
+    """
+    Test that the "internal" config value is correctly set
+    """
+    # Given
+
+    # When
+    main_cpp = generate_main(
+        "tests/component_tests/button/test_button.yaml"
+    )
+
+    # Then
+    assert "wol_1->set_internal(true);" in main_cpp
+    assert "wol_2->set_internal(false);" in main_cpp

tests/component_tests/button/test_button.yaml

@@ -0,0 +1,21 @@
+esphome:
+  name: test
+  platform: ESP8266
+  board: d1_mini_lite
+
+wifi:
+  ssid: SomeNetwork
+  password: SomePassword
+
+button:
+  - platform: wake_on_lan
+    target_mac_address: 12:34:56:78:90:ab
+    name: wol_test_1
+    id: wol_1
+    internal: true
+  - platform: wake_on_lan
+    target_mac_address: 12:34:56:78:90:ab
+    name: wol_test_2
+    id: wol_2
+    internal: false
+