@Test
public void testMultiMapToJsonObject(TestContext context) {

    JsonObject converted = JsonObjectUtils.multiMapToJsonObject(null);
    context.assertEquals(new JsonObject(), converted);
    CaseInsensitiveHeaders map = new CaseInsensitiveHeaders();
    JsonObject expected = new JsonObject();
    context.assertEquals(expected, JsonObjectUtils.multiMapToJsonObject(map));
    map.add("key_1", "value_1");
    map.add("key_2", "value_2");
    expected.put("key_1", "value_1").put("key_2", "value_2");
    context.assertEquals(expected, JsonObjectUtils.multiMapToJsonObject(map));
}