assertMapEquals(ImmutableBiMap.of("one", 1, "two", 2), "one", 1, "two", 2);
    assertMapEquals(ImmutableBiMap.of("one", 1, "two", 2).inverse(), 1, "one", 2, "two");
    assertMapEquals(
        ImmutableBiMap.of("one", 1, "two", 2, "three", 3), "one", 1, "two", 2, "three", 3);
    assertMapEquals(
        ImmutableBiMap.of("one", 1, "two", 2, "three", 3).inverse(),
        1,
        "one",
        2,

    assertEquals(4, diff.evictionCount());

    assertEquals(new CacheStats(0, 0, 0, 0, 0, 0), one.minus(two));
  }

  public void testPlus() {
    CacheStats one = new CacheStats(11, 13, 15, 13, 11, 9);
    CacheStats two = new CacheStats(53, 47, 41, 39, 37, 35);

    CacheStats sum = two.plus(one);
    assertEquals(124, sum.requestCount());
    assertEquals(64, sum.hitCount());

import static com.google.common.math.StatsTesting.TWO_VALUES;
import static com.google.common.math.StatsTesting.TWO_VALUES_MAX;
import static com.google.common.math.StatsTesting.TWO_VALUES_MEAN;
import static com.google.common.math.StatsTesting.TWO_VALUES_MIN;
import static com.google.common.math.StatsTesting.TWO_VALUES_STATS;
import static com.google.common.math.StatsTesting.TWO_VALUES_SUM_OF_SQUARES_OF_DELTAS;

import static com.google.common.math.StatsTesting.TWO_VALUES;
import static com.google.common.math.StatsTesting.TWO_VALUES_MAX;
import static com.google.common.math.StatsTesting.TWO_VALUES_MEAN;
import static com.google.common.math.StatsTesting.TWO_VALUES_MIN;
import static com.google.common.math.StatsTesting.TWO_VALUES_SUM_OF_SQUARES_OF_DELTAS;

    assertMapEquals(ImmutableMap.of("one", 1, "two", 2), "one", 1, "two", 2);
    assertMapEquals(
        ImmutableMap.of("one", 1, "two", 2, "three", 3), "one", 1, "two", 2, "three", 3);
    assertMapEquals(
        ImmutableMap.of("one", 1, "two", 2, "three", 3, "four", 4),
        "one",
        1,
        "two",
        2,
        "three",
        3,
        "four",
        4);

    Iterable<Character> result = Traverser.forGraph(TWO_TREES).breadthFirst('a');

    assertEqualCharNodes(result, "ab");
  }

  @Test
  public void forGraph_breadthFirstIterable_twoTrees() {
    assertEqualCharNodes(Traverser.forGraph(TWO_TREES).breadthFirst(charactersOf("a")), "ab");
    assertEqualCharNodes(Traverser.forGraph(TWO_TREES).breadthFirst(charactersOf("ac")), "acbd");
  }

  @Test

        .containsExactly(mapEntry("three", 5), mapEntry("two", 3))
        .inOrder();
    assertThat(map.subMap("one", "two").entrySet())
        .containsExactly(mapEntry("one", 3), mapEntry("three", 5))
        .inOrder();

    assertEquals(ImmutableSortedMap.of("two", 3, "three", 5), map.tailMap("three", true));
    assertEquals(ImmutableSortedMap.of("one", 3, "three", 5), map.headMap("two", false));

        .containsExactly(mapEntry("three", 5), mapEntry("two", 3))
        .inOrder();
    assertThat(map.subMap("one", "two").entrySet())
        .containsExactly(mapEntry("one", 3), mapEntry("three", 5))
        .inOrder();

    assertEquals(ImmutableSortedMap.of("two", 3, "three", 5), map.tailMap("three", true));
    assertEquals(ImmutableSortedMap.of("one", 3, "three", 5), map.headMap("two", false));

        Helpers.mapEntry("one", "January"),
        Helpers.mapEntry("two", "February"),
        Helpers.mapEntry("three", "March"),
        Helpers.mapEntry("four", "April"),
        Helpers.mapEntry("five", "May"));
  }

  @Override
  public SampleElements<String> sampleKeys() {
    return new SampleElements<>("one", "two", "three", "four", "five");
  }

  @Override

  static final ImmutableList<Double> TWO_VALUES = ImmutableList.of(12.34, -56.78);
  static final double TWO_VALUES_MEAN = (12.34 - 56.78) / 2;
  static final double TWO_VALUES_SUM_OF_SQUARES_OF_DELTAS =
      (12.34 - TWO_VALUES_MEAN) * (12.34 - TWO_VALUES_MEAN)
          + (-56.78 - TWO_VALUES_MEAN) * (-56.78 - TWO_VALUES_MEAN);
  static final double TWO_VALUES_MAX = 12.34;
  static final double TWO_VALUES_MIN = -56.78;