Steven Landow stevenctl

This page introduces the Istio test framework. For an overview of the architecture as well as how to extend the framework, see the Developer Guide.

Introduction
Writing Tests
Running the Tests
- Locally with KinD
- Kubernetes

Introduction

Writing Good Tests

Keeping test times low

Re-use echos

Spinning up services for tests is one of the slower pieces of writing a test. Wherever possible, keep this setup in your suite's Setup to avoid long test times.

var (

Debugging Pilot with Delve

First build pilot with GCFLAGS="all=-n -l":

GCFLAGS="all=-N -l" HUB=docker.io/slandow TAG=slandow BUILD_IN_CONTAINER=1 make docker.pilot

Then we can wrap that image in one that includes delve:

	#!/bin/bash
	cd "$(dirname "$0")"

	for ctx in $(kubectl config get-contexts -o name); do
	FILE="$ctx.yaml"
	# if we have exactly 4 parts, it's probably a GKE cluster. Use the shortname and hope there aren't collisions.
	SHORTNAME=$(echo $ctx \| cut -d'_' -f4)
	if [ -n $SHORTNAME ]; then
	FILE=$SHORTNAME.yaml
	fi

	package main

	import (
	"fmt"
	"sync"
	"time"

	"go.uber.org/atomic"
	"istio.io/istio/pkg/config/schema/collections"
	kubelib "istio.io/istio/pkg/kube"

	#!/bin/bash

	set -e
	set -u
	set -o pipefail

	SERVICE="vm"
	NAMESPACE="echo"
	NETWORK=""
	CLUSTER="Kubernetes"

	package main

	import (
	"fmt"

	"encoding/json"
	"istio.io/istio/pkg/kube"
	"k8s.io/apimachinery/pkg/runtime"
	)

	# triggers a new "b" pod to be created
	---
	apiVersion: apps/v1
	kind: Deployment
	metadata:
	name: b
	spec:
	replicas: 1
	selector:
	matchLabels:

	# scales deployment a to 500 replicas
	---
	apiVersion: apps/v1
	kind: Deployment
	metadata:
	name: a
	spec:
	replicas: 500
	selector:
	matchLabels:

	# sets up a, b, c deployments with services for a and b
	---
	apiVersion: v1
	kind: Service
	metadata:
	name: a
	labels:
	app: a
	spec:
	ports: