@Test
public void getArrayReturnsFormArray() throws Exception {

  final Map<String, String> testKVP = new HashMap<>();
  final String testJoinedString = String.join(",", testArray);
  final Form form = mockedForm(testKVP);
  testKVP.put(testKey, testJoinedString);
  classUnderTest = new RequestParametersForm(form);
  assertArrayEquals(testArray, classUnderTest.getArray(testKey));
}