/**
 * Copyright 2009 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package org.waveprotocol.wave.model.document.operation.algorithm;

import junit.framework.TestCase;

import org.waveprotocol.wave.model.document.operation.Attributes;
import org.waveprotocol.wave.model.document.operation.DocOp;
import org.waveprotocol.wave.model.document.operation.impl.DocOpBuilder;
import org.waveprotocol.wave.model.operation.OperationException;

/**
 * @author ohler@google.com (Christian Ohler)
 */
public class ComposerTest extends TestCase {

  public void testDocumentLengthMismatch() {
    try {
      Composer.compose(new DocOpBuilder().build(), new DocOpBuilder().retain(1).build());
      fail();
    } catch (OperationException e) {
      // ok
    }
    try {
      Composer.compose(new DocOpBuilder().retain(1).build(), new DocOpBuilder().build());
      fail();
    } catch (OperationException e) {
      // ok
    }
  }

  public void testComposerChecking() throws OperationException {
    DocOp checked = new DocOpBuilder().build();
    DocOp unchecked = new DocOpBuilder().elementStart(".!$*.4!(,", Attributes.EMPTY_MAP)
        .elementEnd().buildUnchecked();

    try {
      Composer.compose(checked, unchecked);
      fail();
    } catch (IllegalStateException e) {
      // ok, fails checking.
    }

    // compose unchecked this time, nothing should be thrown.
    Composer.composeUnchecked(checked, unchecked);
  }
}