Consider Plan Checks for Generic Resource/Output Changes

[bflad]

terraform-plugin-testing version

v1.5.1

Use cases

This Go module provides a few abstractions for asserting whether providers are planning a change that will affect state:

• TestStep.ExpectNonEmptyPlan
• TestStep.PlanOnly (mainly to avoid the implicit apply of a Config* test step)
• plancheck.ExpectEmptyPlan()
• plancheck.ExpectNonEmptyPlan()

In #222, it was noted that due to their naming ExpectEmptyPlan and ExpectNonEmptyPlan should be capturing all plan changes that would affect the saved state -- both resource changes and output changes. However, there could be situations where developers want to write generic assertions against only resource changes or only output changes being expected (or not) to occur. This feature request is here to capture interest and use cases.

Proposal

Introduce separate, but still generic plan checks against any/all resource/output changes, e.g.

• plancheck.ExpectNoOutputChanges()
• plancheck.ExpectNoResourceChanges()
• plancheck.ExpectOutputChanges()
• plancheck.ExpectResourceChanges()

References

• Consider Plan Check for Output Value Changes #221 (targeted output value change check)
• plancheck: ExpectEmptyPlan Does Not Account for Output Changes #222