public void GetHostIdAsync_IfStorageAccountProviderThrowsInvalidOperationException_WrapsException()
{
// Arrange
Mock<IStorageAccountProvider> storageAccountProviderMock = new Mock<IStorageAccountProvider>(
MockBehavior.Strict);
TaskCompletionSource<IStorageAccount> taskSource = new TaskCompletionSource<IStorageAccount>();
InvalidOperationException innerException = new InvalidOperationException();
taskSource.SetException(innerException);
storageAccountProviderMock
.Setup(p => p.GetAccountAsync(It.IsAny<string>(), It.IsAny<CancellationToken>()))
.Returns(taskSource.Task);
IStorageAccountProvider storageAccountProvider = storageAccountProviderMock.Object;
IFunctionIndexProvider functionIndexProvider = CreateDummyFunctionIndexProvider();
IHostIdProvider product = new DynamicHostIdProvider(storageAccountProvider, () => functionIndexProvider);
CancellationToken cancellationToken = CancellationToken.None;
// Act & Assert
InvalidOperationException exception = Assert.Throws<InvalidOperationException>(
() => product.GetHostIdAsync(cancellationToken).GetAwaiter().GetResult());
Assert.Equal("A host ID is required. Either set JobHostConfiguration.HostId or provide a valid storage " +
"connection string.", exception.Message);
Assert.Same(innerException, exception.InnerException);
}
