diff --git a/libs/compiler/test_files/deviceIo.slang b/libs/compiler/test_files/deviceIo.slang
new file mode 100644
index 0000000..dcbe855
--- /dev/null
+++ b/libs/compiler/test_files/deviceIo.slang
@@ -0,0 +1,9 @@
+device airConditioner = "d0";
+device gasSensor = "d1";
+
+loop {
+  yield();
+  let indoorTemp = loadFromDevice(gasSensor, "Temperature");
+  let shouldSet = indoorTemp > 30c;
+  setOnDevice(airConditioner, "On", shouldSet);
+}
diff --git a/libs/compiler/test_files/math.slang b/libs/compiler/test_files/math.slang
deleted file mode 100644
index 1d9adb2..0000000
--- a/libs/compiler/test_files/math.slang
+++ /dev/null
@@ -1,7 +0,0 @@
-fn addTemperatures(temp1, temp2) {
-  return temp1 + temp2;
-};
-
-
-let newTemp1 = addTemperatures(15c, 120c);
-let newTemp2 = addTemperatures(50c, 20c);