public async Task CourseDirectoryImportFunction_GetProviders_Returns_Expected_Result()
{
var builder = new ProviderBuilder();
var providers = builder.BuildList();
var expectedResult = builder.BuildJson().PrettifyJsonString();
var tableStorageService = Substitute.For <ITableStorageService>();
tableStorageService.GetAllProviders().Returns(providers);
var functionContext = FunctionObjectsBuilder.BuildFunctionContext();
var request = FunctionObjectsBuilder.BuildHttpRequestData(HttpMethod.Get);
var functions = BuildCourseDirectoryImportFunctions(tableStorageService: tableStorageService);
var result = await functions.GetProviders(request, functionContext);
result.Headers.GetValues("Content-Type").Should().NotBeNull();
result.Headers.GetValues("Content-Type").First().Should().Be("application/json");
var json = await result.Body.ReadAsString();
json.PrettifyJsonString().Should().Be(expectedResult);
}