Added dry-run test

hack/dryrun-e2e.sh

@@ -0,0 +1,59 @@
+#!/bin/bash
+# Copyright 2024 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -o errexit -o nounset -o xtrace
+
+# Default versions k8s and kind
+K8S_VERSION=${K8S_VERSION:-v1.29.0}
+KIND_VERSION=${KIND_VERSION:-v0.20.0}
+
+# Maximum time (in seconds) for a dry run test
+DRYRUN_THRESHOLD=${DRYRUN_DURATION:-5}
+
+# Set the artifacts directory, defaulting to a local subdirectory
+export ARTIFACTS="${ARTIFACTS:-${PWD}/_artifacts}"
+mkdir -p "${ARTIFACTS}/results"
+
+# Download and install kind
+curl -fsSL -o ./kind "https://kind.sigs.k8s.io/dl/${KIND_VERSION}/kind-linux-amd64"
+install --mode=755 ./kind /usr/local/bin/kind
+
+# Create a kind cluster with a specific Kubernetes version that will match the hydrophone test
+cat <<EOF | kind create cluster --image kindest/node:${K8S_VERSION} --config=-
+kind: Cluster
+apiVersion: kind.x-k8s.io/v1alpha4
+nodes:
+- role: control-plane
+- role: worker
+- role: worker
+EOF
+
+# Retrieve cluster information
+kubectl cluster-info --context kind-kind
+kubectl get nodes
+
+# Execute hydrophone with specific parameters and log output
+bin/hydrophone \
+  --focus 'Simple pod should contain last line of the log' \
+  --output-dir ${ARTIFACTS}/results/ \
+  --conformance-image registry.k8s.io/conformance:${K8S_VERSION} \
+  --dry-run | tee /tmp/dryrun.log
+
+# Check the duration of the dry run against the threshold
+DRYRUN_DURATION=$(grep -oP 'Ran 1 of \d+ Specs in \K[0-9.]+(?= seconds)' /tmp/dryrun.log | cut -d. -f1)
+if [[ ${DRYRUN_DURATION} -gt ${DRYRUN_THRESHOLD} ]]; then 
+  echo "Focused test took too long to run. Expected less than ${DRYRUN_THRESHOLD} seconds, got ${DRYRUN_DURATION} seconds"
+  exit 1
+fi