小编Jua*_*ero的帖子

为作业创建测试,我得到一个奇怪的AssertionError例外.

我改变它直到我得到一个简单的案例:

List<Integer> elements= new ArrayList<Integer>();
elements.add(1);
elements.add(2);
elements.add(3);

Permutation p2 = new Permutation(elements);
Permutation p1 = new Permutation(elements);

assertThat(p2, equalTo(p1));

Permutation.java:

public class Permutation {

  private List<Integer> elements;

  public Permutation(List<Integer> elements) {
    this.elements = elements;
  }

public boolean equals(Permutacion permutation){
  if ( this.elements.size() != permutation.elements.size()){
    return false;
  }

  Iterator<Integer> iterThis = this.elements.iterator();
  Iterator<Integer> iterOther = permutation.elements.iterator();
  while ( iterThis.hasNext() && iterOther.hasNext()){
    if ( iterThis.next() != iterOther.next()){
      return false;
    }
  }

  return true;

}

在junit和hamcrest源代码中挖掘我发现junit assert只在匹配器上调用匹配器.

这种情况下的匹配方法是:

public …