I want to use template response in wiremock and set list as a parameter. How to do that?

I set up wiremock in Java:

wireMockServer.stubFor(get(urlPathEqualTo("/somePath"))
            .withQueryParam("place.id", equalTo(buildingId))
            .willReturn(aResponse()
                .withHeader("Content-Type", "application/json")
                .withBodyFile("wiremock/response-template.json") //how to set up this file
                .withTransformerParameters(Map.of(
                    "place", "New York",
                    "users", List.of(new User("John", 24), new User("Merry", 31)) //list to insert
                 ))
                .withTransformers("response-template")));

How to write file: response-template.json to have result like this:

{
  "place": "New York",
  "users": [
    {
      "name": "John",
      "age": 24
    },
    {
      "name": "Marry",
      "age": 31
    }
  ]
}

I know that it should start like this:

{
  "place": "{{parameters.place}}",
  "users": [
    ???
  ]
}

I

CodePudding user response：

The easiest solution would be to use Jackson2 Helper or any other helper that can serialize jsons.

1. Add Handlebars jackson2 dependency to your project:

• Gradle

testImplementation 'com.github.jknack:handlebars-jackson2:4.3.0'

• Maven

<!-- https://mvnrepository.com/artifact/com.github.jknack/handlebars-jackson2 -->
<dependency>
    <groupId>com.github.jknack</groupId>
    <artifactId>handlebars-jackson2</artifactId>
    <version>4.3.0</version>
    <scope>test</scope>
</dependency>

2. Register handler with your wiremock instance :

WireMockServer wireMockServer = new WireMockServer(wireMockConfig().dynamicPort()
                .extensions(new ResponseTemplateTransformer(false, "json", Jackson2Helper.INSTANCE)))

The name of the helper will be json and that is how you will refer to it from your template.

3. In your template use it like :

{
  "place": "{{parameters.place}}",
  "users": {{json parameters.users}}
}

4. The output is :

{
  "place": "New York",
  "users": [{"name":"John","age":24},{"name":"Merry","age":31}]
}

Of course you can customize Jackson2Helper and create your own instance with own ObjectMapper instance - this is useful if you are using Spring and want to use same serialization options everywhere.