Description

There’s potential for flakiness due to timing issues. For example, the TestOperatorControllerMetricsExportedEndpoint assumes that:
• The ClusterRoleBinding and token are immediately effective.
• The curl pod becomes ready promptly.
• The metrics endpoint is available as soon as the pod is ready.

In slower or variable environments, these assumptions might not hold, leading to intermittent failures. Adding explicit waits or retry logic for each resource’s readiness could help mitigate race conditions.

To fix this, this PR:

• Adds a generic retry helper that attempts a function up to 5 times with a 5-second delay between tries.
• Wraps key steps in the metrics endpoint tests with the retry logic:
• Creating the ClusterRoleBinding.
• Generating the ServiceAccount token.
• Creating the curl pod.
• Validating the metrics endpoint via curl.
• Refactored these steps to return errors instead of calling require.NoError immediately, so transient issues are retried before ultimately failing.
• This change minimizes test flakiness due to race conditions or temporary resource unavailability.

Currently on main, on my local machine, I ran this script:

#!/bin/bash

pass_count=0
total=10

for i in $(seq 1 $total); do
    echo "Running test iteration $i/$total..."
    if make test-e2e > /dev/null 2>&1; then
        echo "Iteration $i: PASS"
        ((pass_count++))
    else
        echo "Iteration $i: FAIL"
    fi
done

echo "Summary: Passed $pass_count/$total times."

Failed on the 2nd try on main:

$ ./scripts/test_e2e_10_times.sh
Running test iteration 1/10...
Iteration 1: PASS
Running test iteration 2/10...
Iteration 2: FAIL
Running test iteration 3/10...
^C

I'm running the script now on this branch and will update with my findings.
I gotta make the script report more, to make sure this is the e2e actually causing the fail, but looks like no joy :-(

run script on branch:

Running test iteration 1/10...
Iteration 1: PASS
Running test iteration 2/10...
Iteration 2: PASS
Running test iteration 3/10...
Iteration 3: FAIL
Running test iteration 4/10...
Iteration 4: PASS
Running test iteration 5/10...
Iteration 5: FAIL
Running test iteration 6/10...

Reviewer Checklist

• API Go Documentation
• Tests: Unit Tests (and E2E Tests, if appropriate)
• Comprehensive Commit Messages
• Links to related GitHub Issue(s)