Add testing strategy for Infrastructure Manager

[grego952]

Description

Changes proposed in this pull request:

• Add testing strategy for Infrastructure Manager

Related issue(s)
Fixes #120

[Disper]

I'm not an expert in writing testing strategies but I see value in the CI inventory introduced in this PR.

[CLAassistant]

All committers have signed the CLA.

[CLAassistant]

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1 out of 2 committers have signed the CLA.

✅ grego952
❌ tobiscr
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