This sample shows how to use Hamcrest matcher in validation steps. Read about this feature in reference guide

Objectives

The todo-list sample application provides a REST API for managing todo entries. We call this API and receive Json message structures for validation in our test cases.

This time the validation is done using Hamcrest matcher implementations in combination with JsonPath expression evaluation.

http()
    .client(todoClient)
    .receive()
    .response(HttpStatus.OK)
    .messageType(MessageType.JSON)
    .validate("$.keySet()", hasItems("id", "title", "description", "done"))
    .validate("$.id", equalTo(todoId))
    .validate("$.title", allOf(startsWith("todo_"), endsWith(todoId)))
    .validate("$.description", anyOf(startsWith("Description:"), nullValue()))
    .validate("$.done", not(true));

As you can see we are able to provide Hamcrest matcher instances as expected JsonPath value. The hamcrest matcher is evaluated with the JsonPath expression result. This way we can construct more complex validations on JsonPath expressions.

Also we can use Hamcrest matcher as condition evaluation when using iterable containers in Citrus:

@Test
@CitrusTest
public void testHamcrestCondition() {
    iterate()
        .condition(lessThanOrEqualTo(5))
        .actions(
            createVariable("todoId", "citrus:randomUUID()"),
            createVariable("todoName", "todo_${i}"),
            createVariable("todoDescription", "Description: ${todoName}"),
            http()
                .client(todoClient)
                .send()
                .post("/todolist")
                .messageType(MessageType.JSON)
                .contentType("application/json")
                .payload("{ \"id\": \"${todoId}\", \"title\": \"${todoName}\", \"description\": \"${todoDescription}\", \"done\": false}"),

            http()
                .client(todoClient)
                .receive()
                .response(HttpStatus.OK)
                .messageType(MessageType.PLAINTEXT)
                .payload("${todoId}")
    );
}

The iteration condition uses the lessThanOrEqualTo Hamcrest matcher in order to evaluate the end of the iteration loop. This time we choose to execute the nested test action sequence five times.

Run

You can execute some sample Citrus test cases in this sample in order to write the reports. Open a separate command line terminal and navigate to the sample folder.

Execute all Citrus tests by calling

 mvn integration-test

You should see Citrus performing several tests with lots of debugging output. And of course green tests at the very end of the build and some new reporting files in target/citrus-reports folder.

Of course you can also start the Citrus tests from your favorite IDE. Just start the Citrus test using the TestNG IDE integration in IntelliJ, Eclipse or Netbeans.