DXCDT-416: Add tests for updating universal login branding

[ewanharris]

🔧 Changes

Adds tests that exercise the auth0 ul show and auth0 ul update commands with the provided long hand flags. Also fixes some issues identified whilst writing these tests (will be pushed after PR has been opened)

The first test sets the expected values just incase they are not what is expected, these are also reset in the cleanup script.

📚 References

🔬 Testing

This PR mostly adds tests and the changed code is exercised by the added tests

📝 Checklist

• All new/changed/fixed functionality is covered by tests (or N/A)
• I have added documentation for all new/changed functionality (or N/A)

[codecov-commenter]

Codecov Report

Patch coverage has no change and project coverage change: +0.70 🎉

Comparison is base (016b232) 56.23% compared to head (9db44e2) 56.93%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #692      +/-   ##
==========================================
+ Coverage   56.23%   56.93%   +0.70%     
==========================================
  Files          89       89              
  Lines       11506    11506              
==========================================
+ Hits         6470     6551      +81     
+ Misses       4595     4509      -86     
- Partials      441      446       +5     

see 2 files with indirect coverage changes

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[ewanharris]

From testing, this code is not required. The only case where b.Font is not nil is when inputs.CustomFontURL is not set due to the if on line 212.

Given that, we will always repeat exactly what the if statement on 212 achieves, i.e. if a --font option has been provided then set it

[ewanharris]

I'm not sure if this error is solely for a new tenant/tenant that hasn't touched the values (due to this API being a PATCH API so it's difficult to reset the values)

But on first run of auth0 ul in my tenant I got the below error, this repeated for LogoURL and FaviconURL, looking at the API calls in the UI a GET /api/v2/branding only returned a subset of data {"colors":{"primary":"#FF4F40"}} rather than a full object

panic: runtime error: invalid memory address or nil pointer dereference [recovered]
	panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x2 addr=0x0 pc=0x1009f2604]

goroutine 1 [running]:
github.com/auth0/auth0-cli/internal/cli.Execute.func1()
	/Users/ewanharris/dev/git/auth0-cli/internal/cli/root.go:53 +0xb4
panic({0x101050900, 0x1017f6f60})
	/opt/homebrew/Cellar/go/1.20.2/libexec/src/runtime/panic.go:884 +0x1f4
github.com/auth0/auth0-cli/internal/cli.updateUniversalLoginCmd.func1(0x1400001a900?, {0x140001201c0?, 0x2?, 0x2?})
	/Users/ewanharris/dev/git/auth0-cli/internal/cli/universal_login.go:181 +0x1c4
github.com/spf13/cobra.(*Command).execute(0x1400001a900, {0x140001201a0, 0x2, 0x2})
	/Users/ewanharris/dev/git/auth0-cli/vendor/github.com/spf13/cobra/command.go:916 +0x5c4
github.com/spf13/cobra.(*Command).ExecuteC(0x14000292600)
	/Users/ewanharris/dev/git/auth0-cli/vendor/github.com/spf13/cobra/command.go:1044 +0x340
github.com/spf13/cobra.(*Command).Execute(...)
	/Users/ewanharris/dev/git/auth0-cli/vendor/github.com/spf13/cobra/command.go:968
github.com/spf13/cobra.(*Command).ExecuteContext(...)
	/Users/ewanharris/dev/git/auth0-cli/vendor/github.com/spf13/cobra/command.go:961
github.com/auth0/auth0-cli/internal/cli.Execute()
	/Users/ewanharris/dev/git/auth0-cli/internal/cli/root.go:64 +0x1ac
main.main()
	/Users/ewanharris/dev/git/auth0-cli/cmd/auth0/main.go:6 +0x1c

[willvedd]

Great work 👍