add test for sensor_name and sensor_unit

src/sensors.gleam

@@ -14,8 +14,8 @@ pub type SensorReading {
   SensorReading(sensor: Sensor, value: Float)
 }
 
-pub fn print_sensor_reading(reading: SensorReading) -> Nil {
+pub fn sensor_name(sensor: Sensor) -> String {
-  let sensor_name = case reading.sensor {
+  case sensor {
     Temperature -> "Temperature"
     Humidity -> "Humidity"
     Pressure -> "Pressure"
@@ -23,6 +23,10 @@ pub fn print_sensor_reading(reading: SensorReading) -> Nil {
     ParticalMatterTwoPointFive -> "Partical matter 2.5 micros or less"
     ParticalMatterTen -> "Partical matter 10 microns or less"
   }
+}
+
+pub fn print_sensor_reading(reading: SensorReading) -> Nil {
+  let sensor_name = sensor_name(reading.sensor)
   io.println(sensor_name <> ": " <> float.to_string(reading.value))
 }
 

test/sensors_test.gleam

@@ -0,0 +1,19 @@
+import gleeunit
+import gleeunit/should
+import sensors
+
+pub fn main() -> Nil {
+  gleeunit.main()
+}
+
+// gleeunit test functions end in `_test`
+pub fn file_read_test() {
+  let reading =
+    sensors.sensor_name(sensors.Temperature)
+    <> " "
+    <> "20.5"
+    <> " "
+    <> sensors.sensor_unit(sensors.Temperature)
+  reading
+  |> should.equal("Temperature 20.5 °C")
+}