QuicksortTests in swift

QuicksortTests.swift

import XCTest
@testable import Quicksort



class QuicksortTests: XCTestCase {
  
  //              RED
  //            /     \
  //       REFACTOR  GREEN
  
  func test_quicksort_param() {
    let array = [0]
    XCTAssertEqual(array, quicksort(array: array), "Should be equal.")
  }
  
  func test_quicksort_param_1() {
    let array = [1]
    XCTAssertEqual(array, quicksort(array: array), "Should be equal.")
  }
  
  func test_quicksort_length_2() {
    let array = [0, 1]
    XCTAssertEqual(array, quicksort(array: array), "Should return [0, 1]")
  }
  
  func test_quicksort_length_2_1() {
    let array = [1, 0]
    XCTAssertEqual([0, 1], quicksort(array: array), "Should return [0, 1]")
  }
  
  func test_quicksort_long_array() {
    let array = [1, 0, 6, 3, 5, 4, 2]
    XCTAssertEqual([0, 1, 2, 3, 4, 5, 6], quicksort(array: array), "Should return sorted array.")
  }
  
  
  func test_quicksort_double_array() {
    let array = [1.0, 0, 6.5, 3.1, 5.4, 4, 2]
    XCTAssertEqual([0, 1.0, 2, 3.1, 4, 5.4, 6.5], quicksort(array: array), "Should return sorted array.")
  }
  
  func test_measure_time() {
    var randomArray: [Int] = []
    for _ in 0...10000 {
      randomArray.append(Int(arc4random() % 100000 ))
    }

    measure {
      _ = quicksort(array: randomArray)
    }
  }
  
  func test_sorted() {
    
    var randomArray: [Int] = []
    for _ in 0...10000 {
      randomArray.append(Int(arc4random() % 100000 ))
    }
    
    measure {
      randomArray.sort()
    }
  }
}