@Test
public void jsonStringToMap_shouldParseJson() throws Exception {

    expectedMap.put("key", "value");
    expectedMap.put("other_key", "other_value");
    String json = "{\"key\":\"value\",\"other_key\":\"other_value\"}";
    Map<String, String> map = Json.jsonStringToMap(json);
    assertThat(map).isEqualTo(expectedMap);
}