}

  @CollectionSize.Require(ZERO)
  @CollectionFeature.Require(absent = NON_STANDARD_TOSTRING)
  public void testToString_size0() {
    assertEquals("emptyMap.toString should return {}", "{}", getMap().toString());
  }

  @CollectionSize.Require(ONE)
  @CollectionFeature.Require(absent = NON_STANDARD_TOSTRING)
  public void testToString_size1() {

  }

  @CollectionSize.Require(ZERO)
  @CollectionFeature.Require(absent = NON_STANDARD_TOSTRING)
  public void testToString_size0() {
    assertEquals("emptyMap.toString should return {}", "{}", getMap().toString());
  }

  @CollectionSize.Require(ONE)
  @CollectionFeature.Require(absent = NON_STANDARD_TOSTRING)
  public void testToString_size1() {

    assertEquals(Currency.DOLLAR, bimap.inverse().get(Country.CANADA));

    /* Map must have at least one entry if not an EnumBiMap. */
    try {
      EnumBiMap.create(Collections.<Currency, Country>emptyMap());
      fail("IllegalArgumentException expected");
    } catch (IllegalArgumentException expected) {
    }
    try {
      EnumBiMap.create(EnumHashBiMap.<Currency, Country>create(Currency.class));

    assertEquals(Currency.DOLLAR, bimap.inverse().get(Country.CANADA));

    /* Map must have at least one entry if not an EnumBiMap. */
    try {
      EnumBiMap.create(Collections.<Currency, Country>emptyMap());
      fail("IllegalArgumentException expected");
    } catch (IllegalArgumentException expected) {
    }
    try {
      EnumBiMap.create(EnumHashBiMap.<Currency, Country>create(Currency.class));

import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkElementIndex;
import static com.google.common.base.Preconditions.checkNotNull;
import static java.util.Collections.emptyMap;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.base.Objects;
import com.google.common.collect.Maps.IteratorBasedAbstractMap;

import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * GWT emulation of {@link com.google.common.collect.ImmutableMap}. For non sorted maps, it is a
 * thin wrapper around {@link java.util.Collections#emptyMap()}, {@link
 * Collections#singletonMap(Object, Object)} and {@link java.util.LinkedHashMap} for empty,
 * singleton and regular maps respectively. For sorted maps, it's a thin wrapper around {@link
 * java.util.TreeMap}.
 *

        }

        @Override
        public Map<Range<Comparable<?>>, Object> asMapOfRanges() {
          return Collections.emptyMap();
        }

        @Override
        public Map<Range<Comparable<?>>, Object> asDescendingMapOfRanges() {
          return Collections.emptyMap();
        }

        @Override
        public RangeMap<Comparable<?>, Object> subRangeMap(Range<Comparable<?>> range) {

      return;
    }

    // Explicitly call `equals`; `assertEquals` might return fast
    assertTrue(map.equals(map));
    assertTrue(makePopulatedMap().equals(map));
    assertFalse(map.equals(Collections.emptyMap()));
    // no-inspection ObjectEqualsNull
    assertFalse(map.equals(null));
  }

  public void testEqualsForLargerMap() {
    if (!supportsPut) {
      return;
    }

    Map<K, V> map;

        TestSortedMapGenerator<K, V> delegate, Bound to, Bound from) {
      super(delegate);
      this.to = to;
      this.from = from;

      SortedMap<K, V> emptyMap = delegate.create();
      this.entryComparator = Helpers.entryComparator(emptyMap.comparator());

      // derive values for inclusive filtering from the input samples
      SampleElements<Entry<K, V>> samples = delegate.samples();

import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkElementIndex;
import static com.google.common.base.Preconditions.checkNotNull;
import static java.util.Collections.emptyMap;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.base.Objects;
import com.google.common.collect.Maps.IteratorBasedAbstractMap;