public async Task TestCbsTokenGeneration_InvalidExpirationDateTimeFormat_Fails()
{
// arrange
string token = string.Format(
CultureInfo.InvariantCulture,
"SharedAccessSignature sr={0}&sig={1}&se={2}",
WebUtility.UrlEncode(_hostName),
WebUtility.UrlEncode("signature"),
"01:01:2021");
var azureSasCredential = new AzureSasCredential(token);
var iotHubSasCredentialProperties = new IotHubSasCredentialProperties(_hostName, azureSasCredential);
try
{
// act
await iotHubSasCredentialProperties.GetTokenAsync(null, null, null).ConfigureAwait(false);
Assert.Fail("The parsing of seconds from string to long should have caused an exception.");
}
catch (InvalidOperationException ex)
{
// assert
ex.Message.Should().Be($"Invalid seconds from epoch time on {nameof(AzureSasCredential)} signature.");
}
}
public async Task TestCbsTokenGeneration_MissingExpiration_Fails()
{
// arrange
string token = string.Format(
CultureInfo.InvariantCulture,
"SharedAccessSignature sr={0}&sig={1}",
WebUtility.UrlEncode(_hostName),
WebUtility.UrlEncode("signature"));
var azureSasCredential = new AzureSasCredential(token);
var iotHubSasCredentialProperties = new IotHubSasCredentialProperties(_hostName, azureSasCredential);
try
{
// act
await iotHubSasCredentialProperties.GetTokenAsync(null, null, null).ConfigureAwait(false);
Assert.Fail("The missing expiry on the SAS token should have caused an exception.");
}
catch (InvalidOperationException ex)
{
// assert
ex.Message.Should().Be($"There is no expiration time on {nameof(AzureSasCredential)} signature.");
}
}
public async Task TestCbsTokenGeneration_Succeeds()
{
// arrange
DateTime epochTime = new DateTime(1970, 1, 1);
DateTime expiresAt = DateTime.UtcNow.Add(TimeSpan.FromHours(1));
TimeSpan secondsFromEpochTime = expiresAt.Subtract(epochTime);
long seconds = Convert.ToInt64(secondsFromEpochTime.TotalSeconds, CultureInfo.InvariantCulture);
string expiry = Convert.ToString(seconds, CultureInfo.InvariantCulture);
DateTime updatedExpiresAt = DateTime.UtcNow.Add(TimeSpan.FromHours(2));
TimeSpan updatedSecondsFromEpochTime = updatedExpiresAt.Subtract(epochTime);
long updatedSeconds = Convert.ToInt64(updatedSecondsFromEpochTime.TotalSeconds, CultureInfo.InvariantCulture);
string updatedExpiry = Convert.ToString(updatedSeconds, CultureInfo.InvariantCulture);
string token = string.Format(
CultureInfo.InvariantCulture,
"SharedAccessSignature sr={0}&sig={1}&se={2}",
WebUtility.UrlEncode(_hostName),
WebUtility.UrlEncode("signature"),
expiry);
string updatedToken = string.Format(
CultureInfo.InvariantCulture,
"SharedAccessSignature sr={0}&sig={1}&se={2}",
WebUtility.UrlEncode(_hostName),
WebUtility.UrlEncode("signature"),
updatedExpiry);
var azureSasCredential = new AzureSasCredential(token);
var iotHubSasCredentialProperties = new IotHubSasCredentialProperties(_hostName, azureSasCredential);
// act
CbsToken cbsToken = await iotHubSasCredentialProperties.GetTokenAsync(null, null, null).ConfigureAwait(false);
azureSasCredential.Update(updatedToken);
CbsToken updatedCbsToken = await iotHubSasCredentialProperties.GetTokenAsync(null, null, null).ConfigureAwait(false);
// assert
Math.Abs(expiresAt.Subtract(cbsToken.ExpiresAtUtc).TotalSeconds).Should().BeLessThan(1);
Math.Abs(updatedExpiresAt.Subtract(updatedCbsToken.ExpiresAtUtc).TotalSeconds).Should().BeLessThan(1);
}
