public async Task GetUsersAsync_TwoUsers_Valid()
{
int numUsers = 2;
var handler = new Mock <HttpMessageHandler>(MockBehavior.Strict);
var httpClientFactory = handler.CreateClientFactory();
var httpClient = handler.CreateClient();
string apiReturnString = $"{{\"results\":[{jonSnowUserString},{aryaStartUserString}]}}";
handler.SetupRequest(HttpMethod.Get, $"{requestUrl}{numUsers}")
.ReturnsResponse(apiReturnString);
Mock.Get(httpClientFactory).Setup(x => x.CreateClient(clientName))
.Returns(() =>
{
var client = handler.CreateClient();
client.BaseAddress = new Uri(baseAddress);
return(client);
});
var randomUserRetriever = new RandomUserRetriever(httpClientFactory);
var result = await randomUserRetriever.GetUsersAsync(numUsers);
Assert.AreEqual(2, result.Count);
var user1 = result[0];
Assert.AreEqual("male", user1.Gender);
Assert.AreEqual("Jon", user1.FirstName);
Assert.AreEqual("Snow", user1.LastName);
Assert.AreEqual("House Stark", user1.Country);
var user2 = result[1];
Assert.AreEqual("female", user2.Gender);
Assert.AreEqual("Arya", user2.FirstName);
Assert.AreEqual("Stark", user2.LastName);
Assert.AreEqual("House Stark", user2.Country);
handler.VerifyAll();
}
public async Task GetUsersAsync_UnexpectedApiException()
{
int numUsers = 1;
var handler = new Mock <HttpMessageHandler>(MockBehavior.Strict);
var httpClientFactory = handler.CreateClientFactory();
var httpClient = handler.CreateClient();
// Actual error message from random user API
string errorMessage = "Unexpected error message.";
handler.SetupRequest(HttpMethod.Get, $"{requestUrl}{numUsers}")
.Throws(new Exception(errorMessage));
Mock.Get(httpClientFactory).Setup(x => x.CreateClient(clientName))
.Returns(() =>
{
var client = handler.CreateClient();
client.BaseAddress = new Uri(baseAddress);
return(client);
});
var randomUserRetriever = new RandomUserRetriever(httpClientFactory);
var ex = await Assert.ThrowsExceptionAsync <UnexpectedApiException>(() => randomUserRetriever.GetUsersAsync(numUsers));
Assert.AreEqual($"Unexpected error from Random User API. Error message: {errorMessage}", ex.Message);
handler.VerifyAll();
}
public async Task GetUsersAsync_Negative_Invalid()
{
int numUsers = -1;
var handler = new Mock <HttpMessageHandler>(MockBehavior.Strict);
var httpClientFactory = handler.CreateClientFactory();
var randomUserRetriever = new RandomUserRetriever(httpClientFactory);
var ex = await Assert.ThrowsExceptionAsync <InvalidOperationException>(() => randomUserRetriever.GetUsersAsync(numUsers));
Assert.AreEqual($"numUsers must be at least 1. Value of numUsers: {numUsers}.", ex.Message);
handler.VerifyAll();
}