Hamcrest - Matchers.hasProperty：如何检查对象列表是否包含具有特定值的对象

Question

我对Hamcrest有以下问题：我有一份员工名单

List<Employee> employees = hamcrest.getEmployees();

哪里：

public class Employee {

    private String name;
    private int age;
    private double salary;

    public Employee(String name, int age, double salary) {
        super();
        this.name = name;
        this.age = age;
        this.salary = salary;
    }

和：

public List<Employee> getEmployees() {
        Employee e1 = new Employee("Adam", 39, 18000);
        Employee e2 = new Employee("Jola", 26, 8000);
        Employee e3 = new Employee("Kamil", 64, 7700);
        Employee e4 = new Employee("Mateusz", 27, 37000);
        Employee e5 = new Employee("Joanna", 31, 12700);
        Employee e6 = null;
        return Arrays.asList(e1, e2, e3, e4, e5, e6);
    }

我想检查列表中是否有名称= Mateusz的对象。我试过这样的方式，但出了点问题：

@Test
public void testListOfObjectsContains() {
    List<Employee> employees = hamcrest.getEmployees();
    assertThat(employees, Matchers.anyOf(Matchers.containsInAnyOrder(Matchers.hasProperty("name", is("Mateusz")), Matchers.hasProperty("age", is(27)))));
}

如何使用Hamcrest检查？我花了2个多小时在互联网上找到解决方案，但遗憾的是没有成功。

非常感谢你提前！

Answer 1

你需要匹配器hasItem

assertThat(
  x,
  hasItem(allOf(
    Matchers.<Employee>hasProperty("name", is("Mateusz")),
    Matchers.<Employee>hasProperty("age", is(27))
  ))
);

Answer 2

你也可以使用hasItems，contains或containsInAnyOrder：

assertThat(
  x,
  hasItems( // or contains or containsInAnyOrder 
    Matchers.<Employee>hasProperty("name", is("Mateusz")),
    Matchers.<Employee>hasProperty("age", is(27))
  )
);