我使用带有xUnit / Moq的.NET Core创建单元测试。我想为以下API调用创建单元测试：
[HttpGet("{zip}")]
public IActionResult Get(int zip)
{
//debugging here shows the repository has the object
//but the result is always null
Location result = repository[zip];
if(result == null)
{
return NotFound();
}
else
{
return Ok(result);
}
}
我的单元测试（失败了）是：
[Fact]
public void Api_Returns_Json_Object()
{
//Arrange
Mock<IRepository> mockRepo = new Mock<IRepository>();
mockRepo.Setup(m => m.Locations).Returns(new Location[]
{
new Location
{
zip = 88012,
type = "STANDARD",
state = "NM"
}
});
//Arrange
ApiController controller = new ApiController(mockRepo.Object);
// Act
var response = controller.Get(88012);
// Assert
Assert.True(response.Equals(HttpStatusCode.OK));
}
当我调试时，存储库显示正确的Location对象，但结果始终为null，并返回NotFound()状态代码。
如果我使用PostMan测试响应，则可以正常工作。
以下是相关IRepository成员：
IEnumerable<Location> Locations { get; }
Location this[int zip] { get; }
根据被测方法中访问的内容，在安排测试时设置了错误的成员
[Fact]
public void Api_Returns_Json_Object() {
//Arrange
int zip = 88012;
var location = new Location
{
zip = zip,
type = "STANDARD",
state = "NM"
};
Mock<IRepository> mockRepo = new Mock<IRepository>();
mockRepo.Setup(m => m[zip]).Returns(location);
var controller = new ApiController(mockRepo.Object);
// Act
var response = controller.Get(zip);
var okResult = response as OkObjectResult;
// Assert
Assert.NotNull(okResult);
Assert.Equal(location, okResult.Value);
}
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