This test demonstrates how to get color information via the light sensor

colorSensorTest.swift

// EV3 Color Sensor Sample
// Demonstrates how to get color information via the light sensor

import RobotKit

// Initializes a new EV3Robot instance through which all device communication happens
let robot = try EV3Robot()

// Sets up a light sensor at input port 1
guard let lightSensor = robot.lightSensor(atPort: .one) else {
	fatalError("No light sensor at the given port!")
}

// Continues until the program is stopped
while true {
	// Reads the color value as a string and outputs to the console
	let colorRed = lightSensor.waitUntilColorIs(.red)
	print("red")
	let colorBlack = lightSensor.waitUntilColorIs(.black)
	print("black")
	let colorYellow = lightSensor.waitUntilColorIs(.yellow)
	print("yellow")
}

// Stop program via the app's stop button