source: class SpellCheckerTest {
  
      @Test
      public void testSplitMixedCaseWord_happyPath_notCamelCaseWord() {
  
target: 
          List<String> actual = SpellChecker.splitMixedCaseWord("archer");
          Assert.assertEquals(1, actual.size());
          Assert.assertEquals("archer", actual.get(0));
      }
  
  }