E2E Test Runner

Testing & Quality

Provides the ability to run and iterate on HyperShift e2e tests. Auto-applies when implementing features that require e2e validation, fixing e2e test failures, or working on tasks that need live cluster testing.

QUICK START

How to use this skill

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Review the proposed files and risks before you approve installation.

Prompt to paste

I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/openshift/hypershift/blob/HEAD/.claude/skills/dev/e2e-run-aws/SKILL.md

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First, summarize what it does, its dependencies, license status if identifiable, and any risks. Show the exact files you propose to add under .agents/skills/e2e-test-runner/. Do not write files or run scripts until I approve.

After I approve, install the complete skill folder, including required referenced files, into that project location. Verify it is discoverable, then tell me its actual invocation name and how to use it. Do not claim it is installed until you have verified it.

Copying this prompt does not install or run the skill. Review third-party files before use. Codex skill guide

HyperShift E2E Test Runner

This skill enables autonomous iteration on e2e tests - running tests, analyzing failures, making fixes, and re-running until tests pass.

When to Use This Skill

This skill automatically applies when:

Implementing a feature that needs e2e test validation
Fixing a failing e2e test
Working on a task where the user wants you to iterate until tests pass
Debugging test failures in the test/e2e/ directory
The user mentions running e2e tests or validating changes against a live cluster

Prerequisites

Source the environment file before using this skill:

source dev/claude-env.sh

Environment Configuration

Environment variables from dev/claude-env.sh:

Variable	Description
`E2E_PLATFORM`	Test platform (AWS, Azure, etc.)
`AWS_CREDENTIALS`	Path to AWS credentials file
`OIDC_BUCKET`	S3 bucket for OIDC
`BASE_DOMAIN`	Base DNS domain
`PULL_SECRET`	Path to pull secret file
`AWS_REGION`	AWS region
`E2E_ARTIFACT_DIR`	Directory for test artifacts
`MGMT_KUBECONFIG`	Path to management cluster kubeconfig
`CPO_IMAGE_REPO`	Custom CPO image repository
`RUNTIME`	Container runtime (podman/docker)

Running E2E Tests

Step 1: Check if Test Binary Needs Rebuilding

CRITICAL: Before running any e2e test, you MUST check if the test binary needs rebuilding:

# Check if binary exists
if [ ! -f ./bin/test-e2e ]; then
  echo "Test binary missing, building..."
  make e2e
fi

# Check if any test files are newer than the binary
NEWEST_TEST=$(find test/e2e -name "*.go" -newer ./bin/test-e2e 2>/dev/null | head -1)
if [ -n "$NEWEST_TEST" ]; then
  echo "Test files changed (e.g., $NEWEST_TEST), rebuilding..."
  make e2e
fi

Step 2: Run the Test

Build and execute the test command:

KUBECONFIG=$MGMT_KUBECONFIG \
./bin/test-e2e -test.v -test.timeout 2h \
  -test.run "TEST_PATTERN" \
  -test.v \
  --e2e.platform $E2E_PLATFORM \
  --e2e.aws-credentials-file $AWS_CREDENTIALS \
  --e2e.aws-oidc-s3-bucket-name $OIDC_BUCKET \
  --e2e.base-domain $BASE_DOMAIN \
  --e2e.pull-secret-file $PULL_SECRET \
  --e2e.aws-region $AWS_REGION \
  --e2e.artifact-dir $E2E_ARTIFACT_DIR

Step 3: Add Custom CPO Image (When Testing Control Plane Changes)

If you've made changes to control-plane-operator code and built a custom image, add:

-e2e.control-plane-operator-image $CPO_IMAGE_REPO:TAG

Iteration Loop

When working autonomously on a task that requires e2e validation:

1. Initial Test Run

Run the test to establish baseline:

KUBECONFIG=$MGMT_KUBECONFIG ./bin/test-e2e -test.v -test.run "TestName" [flags...]

2. On Failure - Analyze

Read the test output carefully
Check artifacts in $E2E_ARTIFACT_DIR/ directory for:
- Pod logs
- Events
- Resource states
Identify the root cause

3. Make Fixes

Edit the relevant code (test code, operator code, etc.)
If you modified test/e2e/*.go files, the binary will be rebuilt automatically on next run

4. Rebuild Images (If Needed)

If you modified control-plane-operator code: Use the build-cpo-image skill to build and push a new image.

$RUNTIME build -f Dockerfile.control-plane --platform linux/amd64 -t $CPO_IMAGE_REPO:NEW_TAG .
$RUNTIME push $CPO_IMAGE_REPO:NEW_TAG

5. Re-run Test

Run the test again with updated code/images. Repeat until passing.

Common Test Patterns

Test Pattern	Description
`TestNodePool`	All NodePool tests
`TestNodePool/HostedCluster0/Main/TestSpotTerminationHandler`	Specific spot test
`TestNodePool.*Karpenter`	All Karpenter-related tests
`TestCreateCluster`	Cluster creation tests
`TestUpgrade`	Upgrade tests

Analyzing Test Failures

Check Test Output

The test output includes:

Test name and status
Assertion failures with expected vs actual
Timeout information
Resource creation/deletion logs

Check Artifact Directory

After a test failure, examine:

ls -la $E2E_ARTIFACT_DIR/
# Contains: cluster manifests, pod logs, events, resource dumps

Common Failure Patterns

Pattern	Likely Cause
`context deadline exceeded`	Resource didn't reach expected state in time
`not found`	Resource wasn't created or was deleted prematurely
`connection refused`	Service not ready or network issue
`forbidden`	RBAC or permission issue

Building Test Binary

When test code changes, rebuild:

make e2e

This compiles ./bin/test-e2e with all tests from test/e2e/.

Notes

Tests typically take 10-30+ minutes depending on complexity
Some tests create real AWS resources (costs money, needs cleanup on failure)
Use -test.timeout to set appropriate timeouts (default: 2h)
The artifact directory is overwritten on each run
For long tests, consider running in background and checking periodically