public void testAllocArraysDefault() {
    CompactHashMap<Integer, String> map = CompactHashMap.create();
    assertThat(map.needsAllocArrays()).isTrue();
    assertThat(map.entries).isNull();
    assertThat(map.keys).isNull();
    assertThat(map.values).isNull();

    map.put(1, "1");
    assertThat(map.needsAllocArrays()).isFalse();
    assertThat(map.entries).hasLength(CompactHashing.DEFAULT_SIZE);

    assertThat(Longs.tryParse("")).isNull();
    assertThat(Longs.tryParse("-")).isNull();
    assertThat(Longs.tryParse("+1")).isNull();
    assertThat(Longs.tryParse("999999999999999999999999")).isNull();
    assertWithMessage("Max long + 1")
        .that(Longs.tryParse(BigInteger.valueOf(MAX_VALUE).add(BigInteger.ONE).toString()))
        .isNull();
    assertWithMessage("Max long * 10")

    assertThat(Longs.tryParse("")).isNull();
    assertThat(Longs.tryParse("-")).isNull();
    assertThat(Longs.tryParse("+1")).isNull();
    assertThat(Longs.tryParse("999999999999999999999999")).isNull();
    assertWithMessage("Max long + 1")
        .that(Longs.tryParse(BigInteger.valueOf(MAX_VALUE).add(BigInteger.ONE).toString()))
        .isNull();
    assertWithMessage("Max long * 10")

    return suite;
  }

  public void testAllocArraysDefault() {
    CompactHashSet<Integer> set = CompactHashSet.create();
    assertThat(set.needsAllocArrays()).isTrue();
    assertThat(set.elements).isNull();

    set.add(1);
    assertThat(set.needsAllocArrays()).isFalse();
    assertThat(set.elements).hasLength(CompactHashing.DEFAULT_SIZE);
  }

  public void testAllocArraysExpectedSize() {

    assertThat(future.isDone()).isFalse();
    assertThat(future.tryInternalFastPathGetFailure()).isNull();
  }

  public void testTrustedGetFailure_CanceledNoCause() {
    SettableFuture<String> future = SettableFuture.create();
    future.cancel(false);
    assertThat(future.tryInternalFastPathGetFailure()).isNull();
  }

  public void testGetFailure_Completed() {

  }

  public void testOnlyElementNull() {
    assertThat(Stream.<@Nullable Object>of((Object) null).collect(MoreCollectors.onlyElement()))
        .isNull();
  }

  public void testOnlyElementMultiple() {
    try {
      Stream.of(1, 2).collect(MoreCollectors.onlyElement());
      fail("Expected IllegalArgumentException");

        return "Predicates.alwaysFalse()";
      }
    },
    /** @see Predicates#isNull() */
    IS_NULL {
      @Override
      public boolean apply(@CheckForNull Object o) {
        return o == null;
      }

      @Override
      public String toString() {
        return "Predicates.isNull()";
      }
    },
    /** @see Predicates#notNull() */
    NOT_NULL {
      @Override

    } catch (NumberFormatException expected) {
    }
  }

  public void testStringConverter_nullConversions() {
    assertThat(Doubles.stringConverter().convert(null)).isNull();
    assertThat(Doubles.stringConverter().reverse().convert(null)).isNull();
  }

  @GwtIncompatible // Double.toString returns different value in GWT.
  public void testStringConverter_reverse() {

    } catch (NumberFormatException expected) {
    }
  }

  public void testStringConverter_nullConversions() {
    assertThat(Doubles.stringConverter().convert(null)).isNull();
    assertThat(Doubles.stringConverter().reverse().convert(null)).isNull();
  }

  @GwtIncompatible // Double.toString returns different value in GWT.
  public void testStringConverter_reverse() {

      if (from == State.STARTING) {
        try {
          service.awaitRunning();
          fail();
        } catch (IllegalStateException expected) {
          assertThat(expected).hasCauseThat().isNull();
          assertThat(expected)
              .hasMessageThat()
              .isEqualTo("Expected the service " + service + " to be RUNNING, but was STOPPING");
        }
      }