public async Task GetRate()
{
var from = fixture.Create <string>();
var to = fixture.Create <string>();
var response = fixture.Create <RatesResponse>();
svc.Setup(s => s.GetRate(from, to)).ReturnsAsync(response);
var result = await controller.GetRate(from, to);
var okResult = (OkObjectResult)result;
okResult.Value.Should().Be(response);
}
