MyNativeTests.swift

import XCTest
@testable import MyAwesomeProject

class MyNativeTests: XCTestCase {
  
  func testGunCanShootIfItHasBullets() {
    // 1. Setup: create a gun with 1 bullet
    let gun = Gun(bullets: 1)
    // 2. Execution: shoot
    gun.shoot()
    // 3. Expectation: expect Gun to be out of bullet
    XCTAssertTrue(gun.bullets == 0, "expect Gun to be out of bullet")
  }

  func testGunCannotShootIfItHasNoBullet() {
    // 1. Setup: create a gun with no bullet
    let gun = Gun(bullets: 0)
    // 2. Execution: shoot
    gun.shoot()
    // 3. Expectation: expect Gun to not shoot anything
    XCTAssertTrue(gun.bullets == 0, "expect the number of bullets to remain the same")
  }

}