HTTP GET and POST

[expand title=”Prerequisites” expanded=”true”]

• httpclient-4.5.1.jar
• httpcore-4.4.4.jar
• commons-logging-1.2.jar
• gson-2.6.2.jar

[/expand]

GET METHOD

This service is configured to respond to GET requests that are defined using the forGet(String url) method with the following:

• Custom status code
  • Defined by the CUSTOM_STATUS_CODE variable.
  • Value: 258 in this example
• Predefined String response body
  • Defined by the RESPONSE_BODY_GET variable

Create GET request:

private static final String URL = "http://www.ca.com/portfolio";

private static String RESPONSE_BODY_GET = "Response body from virtualized service.";
private static int CUSTOM_STATUS_CODE = 258;

@Rule
public VirtualServerRule vs = new VirtualServerRule();

@Test
public void testSimpleHttpGetWithResponseCodeAndStringBody() throws IOException {
forGet(URL).doReturn(
aMessage(CUSTOM_STATUS_CODE)
.withStringBody(RESPONSE_BODY_GET)
);

HttpGet httpGet = new HttpGet(URL);
HttpClient httpClient = HttpClientBuilder.create().build();
HttpResponse httpResponse = httpClient.execute(httpGet);

assertEquals(CUSTOM_STATUS_CODE, httpResponse.getStatusLine().getStatusCode());

BufferedReader reader = new BufferedReader(
new InputStreamReader(httpResponse.getEntity().getContent()));
String inputLine;
StringBuffer response = new StringBuffer();

while ((inputLine = reader.readLine()) != null) {
response.append(inputLine);
}
reader.close();

assertEquals(response.toString(), RESPONSE_BODY_GET);
}

POST METHOD

This service is configured to respond to POST requests as defined using the forPost(String url) method. This message has the following arguments:

• Predefined String response body
  • Defined by RESPONSE_BODY_POST variable.
  • Note: This variable includes two parameters which will be replaced by the following post request arguments in the response:
    • ${argument.id}
      Value: 5
    • ${argument.filter}
      Value: ALL

Create POST request:

private static final String URL = "http://www.ca.com/portfolio";

private static String RESPONSE_BODY_POST =
"Response for id ${argument.id} with configured filter for ${argument.filter}.";
private static int CUSTOM_STATUS_CODE = 258;

@Rule
public VirtualServerRule vs = new VirtualServerRule();


@Test
public void testSimpleHttpPost() throws IOException {
forPost(URL).doReturn(
okMessage()
.withStringBody(RESPONSE_BODY_POST)
.withContentType(HttpConstants.PLAIN_TEXT)
.enableMagicStrings()
);

HttpPost httpPost = new HttpPost(URL);
List parameters = new ArrayList(2);
parameters.add(new BasicNameValuePair("id", "5"));
parameters.add(new BasicNameValuePair("filter", "ALL"));
httpPost.setEntity(new UrlEncodedFormEntity(parameters));

HttpClient httpClient = HttpClientBuilder.create().build();
HttpResponse httpResponse = httpClient.execute(httpPost);

BufferedReader reader = new BufferedReader(
new InputStreamReader(httpResponse.getEntity().getContent()));
String inputLine;
StringBuffer response = new StringBuffer();

while ((inputLine = reader.readLine()) != null) {
response.append(inputLine);
}
reader.close();

assertTrue(response.toString().contains("Response for id 5"));
assertTrue(response.toString().contains("filter for ALL."));
}

Complete example is here.