public async void PostRawAsync_MockSearchEndpoint_ReturnsJsonString()
{
string sampleJson = File.ReadAllText("Data/BigMacSearch.json");
var mockClient = new HttpClient(Util.MockHttpMessageHandlerFactory("https://api.nal.usda.gov/fdc/v1/search?api_key=DEMO_KEY", sampleJson));
IRequester webRequester = new WebRequester(mockClient);
string returnedString = await webRequester.PostRawAsync("https://api.nal.usda.gov/fdc/v1/search?api_key=DEMO_KEY", "{\"generalSearchInput\": \"big mac\"}");
Assert.Equal(sampleJson, returnedString);
}