--all option fails

[kmcquade]

For some reason, the --all option fails.

 $ aws-allowlister generate -a
                                                                                                                                                                         
aws_allowlister.command.generate [INFO] Note: to silence these logs, supply the argument '--quiet'
aws_allowlister.command.generate [INFO] Policies for standard(s): 
Traceback (most recent call last):
  File "/Users/kmcquade/Code/github.com/salesforce/aws-allowlister/venv/bin/aws-allowlister", line 8, in <module>
    sys.exit(main())
  File "/Users/kmcquade/Code/github.com/salesforce/aws-allowlister/venv/lib/python3.9/site-packages/aws_allowlister/bin/cli.py", line 21, in main
    aws_allowlister()
  File "/Users/kmcquade/Code/github.com/salesforce/aws-allowlister/venv/lib/python3.9/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/Users/kmcquade/Code/github.com/salesforce/aws-allowlister/venv/lib/python3.9/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/Users/kmcquade/Code/github.com/salesforce/aws-allowlister/venv/lib/python3.9/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/Users/kmcquade/Code/github.com/salesforce/aws-allowlister/venv/lib/python3.9/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/Users/kmcquade/Code/github.com/salesforce/aws-allowlister/venv/lib/python3.9/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/Users/kmcquade/Code/github.com/salesforce/aws-allowlister/venv/lib/python3.9/site-packages/aws_allowlister/command/generate.py", line 133, in generate
    results = generate_allowlist_scp(standards, include, exclude)
  File "/Users/kmcquade/Code/github.com/salesforce/aws-allowlister/venv/lib/python3.9/site-packages/aws_allowlister/command/generate.py", line 151, in generate_allowlist_scp
    services = list(standard_results[0].intersection(*standard_results))
IndexError: list index out of range

I am about to fix this now. I will also expand the click unit tests so it covers all the options.

[jdyke]

I didn't realize that was an available flag / argument. We should add to the list in the readme.

[jdyke]

https://github.com/salesforce/aws-allowlister#arguments

[kmcquade]

That's the default argument for generate - I just thought I'd give it an explicit option.

[kmcquade]

Fixed by #32