Strugging to unit test code depending on CloudBlockBlob.GetSharedAccessSignature(...)

I noticed via #318 that many methods have been made virtual to allow for mocking. This has been immensely helpful in allowing unit testing of modules depending on this library. However, CloudBlockBlob.GetSharedAccessSignature(...) does not have the virtual qualifier and I’m having difficulty working around this.

I don’t want to depend on the storage emulator for my unit tests, so in essence, anything that depends on a real connection could really do with being made virtual, starting with CloudBlockBlob.GetSharedAccessSignature(...). 😃

[paulfleming2004]

For reference my mock is now:

new Mock<CloudBlockBlob>(MockBehavior.Loose, 
	new Uri("http://refract.tv/container/file.ext"), 
	new StorageCredentials("fakeaccoutn", Convert.ToBase64String(Encoding.Unicode.GetBytes("fakekeyval")), "fakekeyname"));

My tests that depend on GetSharedAccessSignature now work.

[blueThunder77]

For reference my mock is now:

new Mock<CloudBlockBlob>(MockBehavior.Loose, 
	new Uri("http://refract.tv/container/file.ext"), 
	new StorageCredentials("fakeaccoutn", Convert.ToBase64String(Encoding.Unicode.GetBytes("fakekeyval")), "fakekeyname"));

My tests that depend on GetSharedAccessSignature now work.

Hello, I know this is an old issue, but this solution did not work for me. I would get a NRE when mock CloudBlockBlob with GetSharedAccessSignature method.

Here is the trace:

Message: 
    System.NullReferenceException : Object reference not set to an instance of an object.
  Stack Trace: 
    CloudBlob.GetCanonicalName(Boolean ignoreSnapshotTime)
    CloudBlob.GetSharedAccessSignature(SharedAccessBlobPolicy policy, SharedAccessBlobHeaders headers, String groupPolicyIdentifier, Nullable`1 protocols, IPAddressOrRange ipAddressOrRange)
    CloudBlob.GetSharedAccessSignature(SharedAccessBlobPolicy policy, SharedAccessBlobHeaders headers, String groupPolicyIdentifier)
    CloudBlob.GetSharedAccessSignature(SharedAccessBlobPolicy policy)

The package version is 9.3.3. It would be nice that we can find out a fix for this.

Thanks!

You’re getting the NullReferenceException because your Mock<CloudBlockBlob> object’s Name property is null. You can fix this using the SetupGet() method, like so:

mockCloudBlockBlob.SetupGet(_ => _.Name).Returns(“testBlob”);