diff --git a/tests/unit_tests/test_core.py b/tests/unit_tests/test_core.py
index 7964528665..0c96f8c8c9 100644
--- a/tests/unit_tests/test_core.py
+++ b/tests/unit_tests/test_core.py
@@ -958,6 +958,13 @@ class TestEsphomeCore:
         target.toolchain = const.Toolchain.ESP_IDF
         assert target.using_toolchain_sdk_nrf is False
 
+    def test_using_toolchain_arduino(self, target):
+        """A toolchain choice, distinct from the arduino target framework."""
+        target.toolchain = const.Toolchain.ARDUINO
+        assert target.using_toolchain_arduino is True
+        target.toolchain = const.Toolchain.PLATFORMIO
+        assert target.using_toolchain_arduino is False
+
     def test_using_native_toolchain(self, target):
         """True exactly for the toolchains that never read platformio.ini."""
         target.toolchain = const.Toolchain.ESP_IDF