eyalgo

// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

eyalgo

	// Somewhere in a different utility class for testing
	@SuppressWarnings("unchecked")
	public static <T> T realObjectFromField(Class<?> clazz, String fieldName, Object object) {
		Field declaredField = accessibleField(clazz, fieldName);
		try {
			return (T) declaredField.get(object);
		} catch (IllegalArgumentException | IllegalAccessException e) {
			throw new RuntimeException(e);
		}
	}

eyalgo

public class Item {
  private final Map<String, Set<String>> attributes;

  public Item(Map<String, Set<String>> attributes) {
    this.attributes = attributes;
  }
  
  public Map<String, Set<String>> getAttributes() {
    return attributes;
  }

eyalgo

public class ItemSaver {
  private String valueToSave;
  public ItemSaver(String valueToSave) {
    this.valueToSave = valueToSave;
  }

  public void doSomething(String attributeName, Item item) {
    Set<String> attributeValues = item.getAttributes().get(attributeName);
    for (String value : attributeValues) {
      if (value.equals(valueToSave)) {

eyalgo

Set<String> attributeValues = item.getAttributes().get(attributeName);
String singleValue = attributeValues.iterator().next();

// String singleValue = item.getAttributes().get(attributeName).iterator().next();

eyalgo

Item item = mock(Item.class);
Map<String, Set<String>> attributes = mock(Map.class);
Set<String> values = mock(Set.class);
Iterator<String> iterator = mock(Iterator.class);
when(iterator.next()).thenReturn("the single value");
when(values.iterator()).thenReturn(iterator);
when(attributes.containsKey("the-key")).thenReturn(true);
when(attributes.get("the-key")).thenReturn(values);
when(item.getAttributes()).thenReturn(attributes);

eyalgo

public class Item {
  private final Map<String, Set<String>> attributes;
  public Item(Map<String, Set<String>> attributes) {
    this.attributes = attributes;
  }

  public boolean attributeExists(String attributeName) {
    return attributes.containsKey(attributeName);
  }

eyalgo

Item item = mock(Item.class);
when(item.getSingleValue("the-key")).thenReturn("the single value");

eyalgo

public class Attributes {
  private final Map<String, Set<String>> attributes;

  public Attributes() {
    this.attributes = new HashMap<>();
  }

  public boolean attributeExists(String attributeName) {
    return attributes.containsKey(attributeName);
  }

eyalgo

public class Item {
  private final Attributes attributes;

  public Item(Attributes attributes) {
    this.attributes = attributes;
  }
  
  public boolean attributeExists(String attributeName) {
    return attributes.attributeExists(attributeName);
  }