initialFileContents: `helloworld
helloworld
jelloworld
chelloworld
`,
			want: `jelloworld
chelloworld
helloworld
`,
		},
		{
			desc:   "simple string and file already contains prefix with content between the prefix and suffix",
			prefix: "hello",
			suffix: "world",
			initialFileContents: `hellocontentsworld
jelloworld
chelloworld
`,
			want: `jelloworld
chelloworld
helloworld
`,
		},
		{

apiVersion: apps/v1
kind: Deployment
metadata:
  name: helloworld-v2
  namespace: default
  labels:
    app: helloworld
    version: v2
spec:
  replicas: 1
  selector:
    matchLabels:
      app: helloworld
      version: v2
  template:
    metadata:
      labels:
        app: helloworld
        version: v2
        sidecar.istio.io/inject: "true"
    spec:
      containers:

        buildScript helloWorldTask()

        when:
        runner('helloWorld', '--unknown').build()

        then:
        thrown UnexpectedBuildFailure
    }

    def "treats invalid argument as build failure and does not throw if expected"() {
        given:
        buildScript helloWorldTask()

        when:
        runner('helloWorld', '--unknown').buildAndFail()

        then:
        noExceptionThrown()

```

Also make sure you are running two versions (v1 and v2) of the helloworld service:

```bash
kubectl apply -f ../helloworld.yaml
```

## Configure the helloworld gateway

Apply the helloworld gateway configuration:

```bash
kubectl apply -f ./helloworld-gateway.yaml
```

metadata:
  name: deploy-con-sec-uid
  labels:
    app: helloworld
    version: v1
spec:
  replicas: 1
  selector:
    matchLabels:
      app: helloworld
      version: v1
  template:
    metadata:
      labels:
        app: helloworld
        version: v1
    spec:
      securityContext:
        runAsUser: 1337
      containers:
      - name: helloworld
        image: docker.io/istio/examples-helloworld-v1

<web-app>
    <display-name>HelloWorld</display-name>

    <servlet>
        <servlet-name>HelloWorld</servlet-name>
        <servlet-class>HelloWorld</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>HelloWorld</servlet-name>
        <url-pattern>/secret.html</url-pattern>
    </servlet-mapping>

apiVersion: apps/v1
kind: Deployment
metadata:
  name: helloworld-v1
  labels:
    app: helloworld
    version: v1
spec:
  replicas: 1
  selector:
    matchLabels:
      app: helloworld
      version: v1
  template:
    metadata:
      annotations:
        sidecar.istio.io/bootstrapOverride: "istio-custom-bootstrap-config"
      labels:
        app: helloworld
        version: v1
    spec:
      containers:

    source = "../tcp-echo/src"
    tags   = ["1.3", "latest"]
  },

  {
    name   = "examples-helloworld-v1"
    source = "../helloworld/src"
    args   = {
      service_version = "v1"
    }
    tags = ["1.0", "latest"]
  },
  {
    name   = "examples-helloworld-v2"
    source = "../helloworld/src"
    args   = {
      service_version = "v2"
    }
    tags = ["1.0", "latest"]
  },
]

f2a8e35c.helloworld-11000x.zst hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world hello world...

Request request = new Request.Builder()
    .url("http://www.publicobject.com/helloworld.txt")
    .header("User-Agent", "OkHttp Example")
    .build();

Response response = client.newCall(request).execute();
response.body().close();
```