public void Resolve_ShouldPass_Exception_Async()
{
// Arrange
_dnsClient.Resolve("", Arg.Any <CancellationToken>()).ReturnsForAnyArgs(Task.FromException <string>(new Exception()));
var client = new SafeDnsClient(_dnsClient);
// Act
Func <Task> action = async() => await client.Resolve("abc.def", CancellationToken.None);
// Assert
action.Should().Throw <Exception>();
}
public void Resolve_ShouldPass_Exception()
{
// Arrange
_dnsClient.Resolve("", Arg.Any <CancellationToken>()).ThrowsForAnyArgs <Exception>();
var client = new SafeDnsClient(_dnsClient);
// Act
Func <Task> action = () => client.Resolve("abc.def", CancellationToken.None);
// Assert
action.Should().Throw <Exception>();
}
public async Task Resolve_ShouldCall_OriginResolve_WithParameters()
{
// Arrange
const string host = "hostname";
var cancellationToken = CancellationToken.None;
var client = new SafeDnsClient(_dnsClient);
// Act
await client.Resolve(host, cancellationToken);
// Assert
await _dnsClient.Received(1).Resolve(host, cancellationToken);
}
public async Task Resolve_ShouldSuppress_ExpectedException(Type exceptionType)
{
// Arrange
var exception = (Exception)Activator.CreateInstance(exceptionType);
_dnsClient.Resolve("", Arg.Any <CancellationToken>()).ThrowsForAnyArgs(exception);
var client = new SafeDnsClient(_dnsClient);
// Act
var result = await client.Resolve("abc.def", CancellationToken.None);
// Assert
result.Should().BeNullOrEmpty();
}
public async Task Resolve_ShouldBe_OriginResolve()
{
// Arrange
const string ip = "135.11.47.210";
_dnsClient.Resolve("", Arg.Any <CancellationToken>()).ReturnsForAnyArgs(ip);
var client = new SafeDnsClient(_dnsClient);
// Act
var result = await client.Resolve("host", CancellationToken.None);
// Assert
result.Should().Be(ip);
}
public void NameServers_ShouldBe_OriginNameServers()
{
// Arrange
var nameServers = new[]
{
new IPEndPoint(IPAddress.Parse("15.46.251.79"), 53),
new IPEndPoint(IPAddress.Parse("8.8.8.8"), 53),
new IPEndPoint(IPAddress.Parse("10.3.15.47"), 66)
};
_dnsClient.NameServers.Returns(nameServers.ToList());
var client = new SafeDnsClient(_dnsClient);
// Act
var result = client.NameServers;
// Assert
result.Should().BeEquivalentTo(nameServers);
}
