SelectNotNullOperation_Test.java

package jetbrains.mps.baseLanguage.collections.unittest.simple_operations;

/*Generated by MPS */

import junit.framework.TestCase;
import jetbrains.mps.internal.collections.runtime.Sequence;
import java.util.Collections;
import junit.framework.Assert;
import jetbrains.mps.internal.collections.runtime.NotNullWhereFilter;
import jetbrains.mps.internal.collections.runtime.ISequenceClosure;
import java.util.Iterator;
import jetbrains.mps.baseLanguage.closures.runtime.YieldingIterator;

public class SelectNotNullOperation_Test extends TestCase {
  public void test_EmptySequence() throws Exception {
    Iterable<Integer> intS = Sequence.fromIterable(Collections.<Integer>emptyList());

    Assert.assertTrue(Sequence.fromIterable(intS).where(new NotNullWhereFilter<Integer>()).isEmpty());
  }
  public void test_IntegerSequence() throws Exception {
    Iterable<Integer> intS = Sequence.fromClosure(new ISequenceClosure<Integer>() {
      public Iterable<Integer> iterable() {
        return new Iterable<Integer>() {
          public Iterator<Integer> iterator() {
            return new YieldingIterator<Integer>() {
              private int __CP__ = 0;
              protected boolean moveToNext() {
__loop__:
                do {
__switch__:
                  switch (this.__CP__) {
                    case -1:
                      assert false : "Internal error";
                      return false;
                    case 2:
                      this.__CP__ = 3;
                      this.yield((Integer) 20);
                      return true;
                    case 3:
                      this.__CP__ = 1;
                      this.yield(null);
                      return true;
                    case 0:
                      this.__CP__ = 2;
                      break;
                    default:
                      break __loop__;
                  }
                } while (true);
                return false;
              }
            };
          }
        };
      }
    });


    Assert.assertTrue(Sequence.fromIterable(intS).contains(20));
    Assert.assertTrue(Sequence.fromIterable(intS).contains(null));

    Iterable<Integer> intSNotNull = Sequence.fromIterable(intS).where(new NotNullWhereFilter<Integer>());
    Assert.assertTrue(Sequence.fromIterable(intSNotNull).contains(20));
    Assert.assertFalse(Sequence.fromIterable(intSNotNull).contains(null));

    for (Integer i : Sequence.fromIterable(intS).where(new NotNullWhereFilter<Integer>())) {
      Assert.assertTrue(i != null);
    }

  }
}