// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")
@IgnoreJRERequirement // We opt into library desugaring for our tests.
public class MapMergeTester<K, V> extends AbstractMapTester<K, V> {
  @MapFeature.Require(SUPPORTS_PUT)
  public void testAbsent() {
    assertEquals(
        "Map.merge(absent, value, function) should return value",
        v3(),

// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")
public class MapMergeTester<K, V> extends AbstractMapTester<K, V> {
  @MapFeature.Require(SUPPORTS_PUT)
  public void testAbsent() {
    assertEquals(
        "Map.merge(absent, value, function) should return value",
        v3(),

import static com.google.common.collect.testing.testers.MapEntrySetTester.getContainsEntryWithIncomparableValueMethod;
import static com.google.common.collect.testing.testers.MapMergeTester.getMergeNullValueMethod;
import static com.google.common.collect.testing.testers.MapPutAllTester.getPutAllNullKeyUnsupportedMethod;
import static com.google.common.collect.testing.testers.MapPutTester.getPutNullKeyUnsupportedMethod;