An easier way to ignore fields is needed for the metricdatatest assert functions

[MrAlias]

Problem Statement

The metricdatatest assert functions are great! However, I'm always frustrated when using them and I need to ignore a field. For example, I have real latency measured in a histogram and I cannot deterministically defined the expected buckets, sum, min, or max.

Similarly, I may only care about a sum value, but don't know the attributes they will have because that is done through other instrumentation.

Proposed Solution

Add an "Ignore" option i.e. https://pkg.go.dev/github.com/google/go-cmp/cmp#Ignore

Alternatives

• Add an "IgnoreZeroValueFields" that allow you to skip any field that is zero value
• Add an Ignore option that takes a generic type that will be ignored in its evaluation. It would work similar to the assert.IsType second param is evaluated and used.

[MrAlias]

This came up with adding back integration testing to contrib packages:

• Add back metric integration testing to the otelgocql/test package opentelemetry-go-contrib#2962
• Add back metric integration testing to the otelhttp/test package opentelemetry-go-contrib#2959

[github-actions]

This issue has been closed as inactive because it has been stale for 2 years with no activity.