* See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.graph;

import static com.google.common.graph.GraphConstants.ENDPOINTS_MISMATCH;
import static com.google.common.truth.Truth.assertThat;
import static com.google.common.truth.TruthJUnit.assume;
import static org.junit.Assert.assertThrows;
import static org.junit.Assert.fail;

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.graph;

import static com.google.common.graph.GraphConstants.ENDPOINTS_MISMATCH;
import static com.google.common.graph.TestUtil.assertStronglyEquivalent;
import static com.google.common.truth.Truth.assertThat;
import static java.util.concurrent.Executors.newFixedThreadPool;

 * limitations under the License.
 */

package com.google.common.graph;

import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.graph.GraphConstants.NODE_NOT_IN_GRAPH;
import static com.google.common.graph.Graphs.TransitiveClosureSelfLoopStrategy.ADD_SELF_LOOPS_ALWAYS;
import static java.util.Objects.requireNonNull;

import com.google.common.collect.ImmutableSet;