initThreeCopies();
    assertEquals(3, getMultiset().count(e0()));
    Multiset.Entry<E> entry = getOnlyElement(getMultiset().entrySet());
    assertEquals(3, entry.getCount());
    assertTrue(getMultiset().remove(e0()));
    assertEquals(2, entry.getCount());
    assertTrue(getMultiset().elementSet().remove(e0()));
    assertEquals(0, entry.getCount());
  }

  @CollectionSize.Require(SEVERAL)

    assertNull(table.put("foo", 3, cellValue('c')));
    assertEquals((Character) 'a', table.put("foo", 1, cellValue('d')));
    assertEquals((Character) 'd', table.get("foo", 1));
    assertEquals((Character) 'b', table.get("bar", 1));
    assertSize(3);
    assertEquals((Character) 'd', table.put("foo", 1, cellValue('d')));
    assertEquals((Character) 'd', table.get("foo", 1));
    assertSize(3);
  }

          @Override
          public void run() {
            runCalled.getAndIncrement();
          }
        },
        directExecutor());
    list.execute();
    assertEquals(1, runCalled.get());
    list.execute();
    assertEquals(1, runCalled.get());
  }

  public void testExecute_idempotentConcurrently() throws InterruptedException {
    final CountDownLatch okayToRun = new CountDownLatch(1);

    assertEquals(0, ticker.read());
    assertEquals(10, ticker.read());
    assertEquals(20, ticker.read());
  }

  public void testAutoIncrementStep_millis() {
    FakeTicker ticker = new FakeTicker().setAutoIncrementStep(1, MILLISECONDS);
    assertEquals(0, ticker.read());
    assertEquals(1000000, ticker.read());
    assertEquals(2000000, ticker.read());
  }

    assertEquals("b", cycle.next());
    assertTrue(cycle.hasNext());
    assertEquals("a", cycle.next());
    cycle.remove();
    assertEquals(singletonList("b"), iterable);
    assertTrue(cycle.hasNext());
    assertEquals("b", cycle.next());
    assertTrue(cycle.hasNext());
    assertEquals("b", cycle.next());
    cycle.remove();
    assertEquals(emptyList(), iterable);
    assertFalse(cycle.hasNext());
  }

  public void testKeys() {
    resetContainer(mapEntry(k0(), v0()), mapEntry(k0(), v1()), mapEntry(k1(), v0()));
    Multiset<K> keys = multimap().keys();
    assertEquals(2, keys.count(k0()));
    assertEquals(1, keys.count(k1()));
    assertEquals(3, keys.size());
    assertContainsAllOf(keys, k0(), k1());
    assertContainsAllOf(
        keys.entrySet(), Multisets.immutableEntry(k0(), 2), Multisets.immutableEntry(k1(), 1));

    @Override
    protected void startUp() throws Exception {
      assertEquals(0, startupCalled);
      assertEquals(0, runCalled);
      assertEquals(0, shutdownCalled);
      startupCalled++;
    }

    @Override
    protected void run() throws Exception {
      assertEquals(1, startupCalled);
      assertEquals(0, runCalled);
      assertEquals(0, shutdownCalled);
      runCalled++;
    }

    @Override

import org.eclipse.aether.resolution.VersionRequest;
import org.eclipse.aether.resolution.VersionResult;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;

class DefaultVersionResolverTest extends AbstractRepositoryTestCase {
    @Inject
    private DefaultVersionResolver versionResolver;

    @Test

    assertEquals("", Files.getFileExtension("."));
    assertEquals("", Files.getFileExtension(".."));
    assertEquals("", Files.getFileExtension("..."));
    assertEquals("", Files.getFileExtension("blah"));
    assertEquals("", Files.getFileExtension("blah."));
    assertEquals("", Files.getFileExtension(".blah."));
    assertEquals("", Files.getFileExtension("/foo.bar/blah"));

    }

    private void assertViolations(SimpleProblemCollector result, int fatals, int errors, int warnings) {
        assertEquals(fatals, result.getFatals().size(), String.valueOf(result.getFatals()));
        assertEquals(errors, result.getErrors().size(), String.valueOf(result.getErrors()));
        assertEquals(warnings, result.getWarnings().size(), String.valueOf(result.getWarnings()));
    }

    @Test