// var _ io.StringWriter = rb
	var _ io.ByteReader = rb
	var _ io.ByteWriter = rb
}

func TestRingBuffer_Write(t *testing.T) {
	rb := New(64)

	// check empty or full
	if !rb.IsEmpty() {
		t.Fatalf("expect IsEmpty is true but got false")
	}
	if rb.IsFull() {
		t.Fatalf("expect IsFull is false but got true")
	}
	if rb.Length() != 0 {

    assertThat(requirements.getPresentFeatures()).isEmpty();
    assertThat(requirements.getAbsentFeatures()).isEmpty();
  }

  public void testBuildTesterRequirements_class_empty() throws Exception {
    @Require
    class Tester {}

    TesterRequirements requirements = buildTesterRequirements(Tester.class);

    assertThat(requirements.getPresentFeatures()).isEmpty();

    public boolean isEmpty() {
        return entry == null || vertices == null || vertices.isEmpty();
    }

    // ------------------------------------------------------------------------
    public boolean isEmptyEdges() {
        return isEmpty() || incidentEdges == null || incidentEdges.isEmpty();
    }

 * limitations under the License.
 */
package okhttp3

import assertk.assertThat
import assertk.assertions.containsExactly
import assertk.assertions.isEmpty
import assertk.assertions.isEqualTo
import java.io.IOException
import java.net.InetAddress
import java.net.InetSocketAddress
import java.net.Proxy
import java.net.SocketTimeoutException

     *            文字列
     * @param separator
     *            セパレータ
     * @return 結果の文字列
     */
    public static String substringFromLast(final String str, final String separator) {
        if (isEmpty(str) || isEmpty(separator)) {
            return str;
        }
        final int pos = str.lastIndexOf(separator);
        if (pos == -1) {
            return str;
        }
        return str.substring(0, pos);

    assertThat(network.adjacentNodes(N2)).isEmpty();
    assertThat(network.predecessors(N2)).isEmpty();
    assertThat(network.successors(N2)).isEmpty();
    assertThat(network.incidentEdges(N2)).isEmpty();
    assertThat(network.inEdges(N2)).isEmpty();
    assertThat(network.outEdges(N2)).isEmpty();
    assertThat(network.adjacentNodes(N4)).isEmpty();
    assertThat(network.predecessors(N4)).isEmpty();

    assertTrue(map.isEmpty());
    assertEquals(0, map.size());
    assertFalse(map.containsKey("1"));
    assertFalse(map.containsKey("2"));
    assertFalse(map.containsKey("3"));
    assertEquals(0L, map.get("1"));
    assertEquals(0L, map.get("2"));
    assertEquals(0L, map.get("3"));

    map.putAll(in);
    assertFalse(map.isEmpty());
    assertEquals(3, map.size());

    assertTrue(ArbitraryInstances.get(NavigableMap.class).isEmpty());
    assertTrue(ArbitraryInstances.get(LinkedList.class).isEmpty());
    assertTrue(ArbitraryInstances.get(Deque.class).isEmpty());
    assertTrue(ArbitraryInstances.get(Queue.class).isEmpty());
    assertTrue(ArbitraryInstances.get(PriorityQueue.class).isEmpty());
    assertTrue(ArbitraryInstances.get(BitSet.class).isEmpty());

    assertFalse(c3.isClosed());

    closer.close();

    assertTrue(c1.isClosed());
    assertTrue(c2.isClosed());
    assertTrue(c3.isClosed());

    assertTrue(suppressor.suppressions.isEmpty());
  }

  public void testExceptionThrown_fromTryBlock() throws IOException {
    Closer closer = new Closer(suppressor);

    TestCloseable c1 = closer.register(TestCloseable.normal());

  }

  /**
   * Returns an immutable range set containing the specified single range. If {@link Range#isEmpty()
   * range.isEmpty()}, this is equivalent to {@link ImmutableRangeSet#of()}.
   */
  public static <C extends Comparable> ImmutableRangeSet<C> of(Range<C> range) {
    checkNotNull(range);
    if (range.isEmpty()) {
      return of();
    } else if (range.equals(Range.all())) {
      return all();
    } else {