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AddSingleton does not work as expected

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
csharp

Research direction

Start by reproducing the reported AddSingleton(type, instance) and factory registrations in the SDK's service setup, using the supplied tool type and Activator.CreateInstance path. Compare whether the registered instance or factory is invoked when the tool is created; done means both registration forms are honored instead of silently creating another instance.

Written by the indexing model from the issue text.

Description

enhancement needs confirmation P3

Describe the bug
When we register tool like AddSingleton(type, instance) and pass a singleton instance, it seems that the instance is being ignored and the library creates a new instance when it needs it.
I tried also AddSingleton using a factory method like this:
services.AddSingleton(toolType, provider => Activator.CreateInstance(toolType, this.m_compositionService));
A breakpoint to Activator.CreateInstance was never hit and the tool just created the instance of the tool.

To Reproduce
Steps to reproduce the behavior:
1.

Expected behavior
A clear and concise description of what you expected to happen.

Logs
If applicable, add logs to help explain your problem.

Additional context
We discussed the issue over email. Please feel free to contact me there if you need additional information. Thanks!

Dominant language
C#
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Merged PRs (30d)
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