//[Test]
public async Task GetAllTeachers_NoTeacher()
{
// ARRANGE
var handlerMock = new Mock <HttpMessageHandler>(MockBehavior.Strict);
handlerMock
.Protected()
.Setup <Task <HttpResponseMessage> >("SendAsync", ItExpr.IsAny <HttpRequestMessage>(), ItExpr.IsAny <CancellationToken>())
.ReturnsAsync(new HttpResponseMessage
{
StatusCode = HttpStatusCode.OK,
Content = new StringContent(JsonConvert.SerializeObject(new List <Teacher>()),
Encoding.UTF8,
"application/json"),
})
.Verifiable();
// use real http client with mocked handler here
var httpClient = new HttpClient(handlerMock.Object)
{
BaseAddress = new Uri("http://test.com/"),
};
var manager = new TeachersManager(httpClient);
// ACT
var result = await manager.GetAll();
// ASSERT
Assert.IsNotNull(result);
Assert.AreEqual(0, result.Count);
// also check the 'http' call was like we expected it
var expectedUri = new Uri("http://test.com/api/teachers");
handlerMock.Protected().Verify(
"SendAsync",
Times.Exactly(1), // we expected a single external request
ItExpr.Is <HttpRequestMessage>(req =>
req.Method == HttpMethod.Get && // we expected a GET request
req.RequestUri == expectedUri // to this uri
),
ItExpr.IsAny <CancellationToken>()
);
}
