#25 - Javascript

Author: parababire

Roadmap/28 - SOLID LSP/javascript/parababire.js

@@ -0,0 +1,111 @@
+// Ejercicio
+
+/* Incorrecto */
+
+/* class Ball {
+  bounce() {
+    console.log(`The ball bounce!!!`);
+  }
+}
+
+class BowlingBall extends Ball {
+  bounce() {
+    throw new Error(`Bowling ball can't bounce!!!`)
+  }
+} */
+
+/* const ball = new Ball()
+const bowlingBall = new BowlingBall()
+ball.bounce()
+bowlingBall.bounce() */
+
+/* Correcto */
+
+class Ball {
+  throw() {
+    console.log(`Throw the ball`);
+  }
+}
+
+class BowlingBall extends Ball {
+  throw() {
+    console.log(`Throw the ball toward pins`);
+  }
+}
+
+let ball = new Ball()
+let bowlingBall = new BowlingBall()
+ball.throw()
+bowlingBall.throw()
+
+/* Comprobación del principio de sustitución de Likov */
+
+ball = new BowlingBall()
+bowlingBall = new Ball()
+ball.throw()
+bowlingBall.throw()
+
+// Extra
+
+class Vehicle {
+  constructor(speed = 0) {
+    this.speed = speed
+  }
+
+  accelerate(increment) {
+    this.speed += increment
+    console.log(this.speed);
+    
+  }
+  break(decrement) {
+    this.speed -= decrement
+    if (this.speed <= 0) {
+      console.log(this.speed = 0)
+    }
+    console.log(this.speed)
+  }
+}
+
+class Car extends Vehicle {
+  accelerate(increment) {
+    console.log(`El carro está acelerando`)
+    super.accelerate(increment)
+  }
+  break(decrement) {
+    console.log(`El carro está frenando`)
+    super.break(decrement)
+  }
+}
+class Bike extends Vehicle {
+  accelerate(increment) {
+    console.log(`La bicicleta está acelerando`)
+    super.accelerate(increment)
+  }
+  break(decrement) {
+    console.log(`La bicicleta está frenando`)
+    super.break(decrement)
+  }
+}
+class Motocycle extends Vehicle {
+  accelerate(increment) {
+    console.log(`La moto está acelerando`)
+    super.accelerate(increment)
+  }
+  break(decrement) {
+    console.log(`La moto está frenando`)
+    super.break(decrement)
+  }
+}
+
+function testVehicle(vehicle) {
+  vehicle.accelerate(2)
+  vehicle.break(1)
+}
+
+const car = new Car()
+const bike = new Bike()
+const motocycle = new Motocycle()
+
+testVehicle(car)
+testVehicle(bike)
+testVehicle(motocycle)