### Question:
EntityUtils { public static String valueToString(Object value) { if (value == null) { return ""; } if (isPrimitiveOrStringArray(value)) { return primitiveOrStringArrayToString(value); } return String.valueOf(value); } private  EntityUtils(); static Map<Long, T> entitiesToMap(Collection<T> entities); static Long[] ids(Iterable<? extends Entity> entities); static String valueToString(Object value); static Map<String, Object> propertiesToMap(Entity Entity); static Map<String, Object> propertiesToMap(Entity Entity, ObjectInclusionPolicy<String> propertyInclusionPolicy); static int deleteNodeAndRelationships(Node toDelete); static String nodeToString(Node node); static String relationshipToString(Relationship relationship); static String propertiesToString(Entity Entity); static int getInt(Entity Entity, String key); static int getInt(Entity Entity, String key, int defaultValue); static long getLong(Entity Entity, String key); static long getLong(Entity Entity, String key, long defaultValue); static float getFloat(Entity Entity, String key); static float getFloat(Entity Entity, String key, float defaultValue);  }### Answer:
@Test public void verifyValueToString() { assertEquals("", valueToString(null)); assertEquals("", valueToString("")); assertEquals("T", valueToString("T")); assertEquals("1", valueToString(1)); assertEquals("1", valueToString(1L)); assertEquals("[one, two]", valueToString(new String[]{"one", "two"})); assertEquals("[1, 2]", valueToString(new int[]{1, 2})); }