import com.google.common.testing.NullPointerTester;
import com.google.common.testing.SerializableTester;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

   *
   * @param failedConnection an optional connection that was resulted in a failure. If the failure
   *     is recoverable, the connection's route may be recovered for the retry.
   */
  fun hasNext(failedConnection: RealConnection? = null): Boolean

  /**
   * Returns true if the host and port are unchanged from when this was created. This is used to

import java.net.MalformedURLException;
import java.net.URISyntaxException;
import java.net.URL;
import java.net.URLClassLoader;
import java.nio.charset.Charset;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.NoSuchElementException;
import java.util.Set;
import java.util.jar.Attributes;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;

        checkArgument(entryFields.hasNext(), INVALID_ENTRY_MESSAGE, entry);
        String key = entryFields.next();
        checkArgument(!map.containsKey(key), "Duplicate key [%s] found.", key);

        checkArgument(entryFields.hasNext(), INVALID_ENTRY_MESSAGE, entry);
        String value = entryFields.next();
        map.put(key, value);

        checkArgument(!entryFields.hasNext(), INVALID_ENTRY_MESSAGE, entry);
      }

      private var removeSnapshot: Snapshot? = null

      override fun hasNext(): Boolean {
        if (nextSnapshot != null) return true

        synchronized(this@DiskLruCache) {
          // If the cache is closed, truncate the iterator.
          if (closed) return false

          while (delegate.hasNext()) {
            nextSnapshot = delegate.next()?.snapshot() ?: continue
            return true

      new RegularImmutableSet<>(EMPTY_ARRAY, 0, EMPTY_ARRAY, 0);

  private final transient Object[] elements;
  private final transient int hashCode;
  // the same values as `elements` in hashed positions (plus nulls)
  @VisibleForTesting final transient @Nullable Object[] table;
  // 'and' with an int to get a valid table index.
  private final transient int mask;

    set("b", "b1", "b2")
    set("c", "c1", "c2")
    val iterator = cache.snapshots()
    assertThat(iterator.hasNext()).isTrue()
    iterator.next().use {
      assertThat(it.key()).isEqualTo("a")
      it.assertValue(0, "a1")
      it.assertValue(1, "a2")
    }
    assertThat(iterator.hasNext()).isTrue()
    iterator.next().use {
      assertThat(it.key()).isEqualTo("b")
      it.assertValue(0, "b1")

      private var nextUrl: String? = null
      private var canRemove = false

      override fun hasNext(): Boolean {
        if (nextUrl != null) return true

        canRemove = false // Prevent delegate.remove() on the wrong item!
        while (delegate.hasNext()) {
          try {
            delegate.next().use { snapshot ->
              val metadata = snapshot.getSource(ENTRY_METADATA).buffer()

        Iterator<Integer> filteredItr = filtered.iterator();
        for (Integer i : unfiltered) {
          if (EVEN.apply(i)) {
            assertTrue(filteredItr.hasNext());
            assertEquals(i, filteredItr.next());
          }
        }
        assertFalse(filteredItr.hasNext());
      }
    }

    public void testForEach() {
      for (List<Integer> contents : SAMPLE_INPUTS) {
        C unfiltered = createUnfiltered(contents);

        Set set = project1.getArtifacts();
        assertNotNull(set, "No artifacts");
        assertTrue(set.size() > 0, "No Artifacts");

        for (Object aSet : set) {
            Artifact artifact = (Artifact) aSet;
            System.out.println("Artifact: " + artifact.getDependencyConflictId() + " " + artifact.getVersion()
                    + " Scope: " + artifact.getScope());
            assertTrue(