/*
 * Copyright 2000-2007 JetBrains s.r.o.
 *
 * 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 jetbrains.buildServer.buildTriggers.vcs.mercurial.command;

import jetbrains.buildServer.vcs.VcsException;
import org.jetbrains.annotations.NotNull;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;

import java.io.IOException;
import java.util.List;

@Test
public class LogCommandTest extends BaseCommandTestCase {
  @BeforeMethod
  @Override
  protected void setUp() throws Exception {
    super.setUp();
    setRepository("mercurial-tests/testData/rep1", true);
  }

  public void testOneChangeSet() throws Exception {
    final String toId = "9875b412a788";
    List<ChangeSet> changes = runLog(null, toId);
    assertEquals(1, changes.size());
    final ChangeSet changeSet = changes.get(0);
    assertEquals(0, changeSet.getRevNumber());
    assertEquals(toId, changeSet.getId());
    assertEquals("pavel@localhost", changeSet.getUser());
    assertEquals("dir1 created", changeSet.getSummary());
    assertNull(changeSet.getParents());
  }

  public void testMoreThanOneChangeSet() throws Exception {
    final String fromId = "9875b412a788";
    final String toId = "7209b1f1d793";
    List<ChangeSet> changes = runLog(fromId, toId);
    assertEquals(3, changes.size());
    ChangeSet changeSet1 = changes.get(0);
    final ChangeSet changeSet2 = changes.get(1);
    final ChangeSet changeSet3 = changes.get(2);
    assertEquals("dir1 created", changeSet1.getSummary());
    assertEquals("new file added", changeSet2.getSummary());
    assertEquals("file4.txt added", changeSet3.getSummary());

    changes = runLog(null, toId);
    assertEquals(3, changes.size());
    changeSet1 = changes.get(2);
    assertEquals("file4.txt added", changeSet1.getSummary());
  }

  public void changeset_parents() throws VcsException, IOException {
    List<ChangeSet> changes = runLog("ae4f72cfa9d4", "ae4f72cfa9d4");
    assertEquals(1, changes.size());
    ChangeSet cs = changes.get(0);
    assertNotNull(cs.getParents());
    assertEquals(1, cs.getParents().size());
    assertEquals(new ChangeSetRevision("6:b9deb9a1c6f4"), cs.getParents().get(0));

    changes = runLog("1870e1100fab", "1870e1100fab");
    assertEquals(1, changes.size());
    assertEquals(2, changes.get(0).getParents().size());
  }

  private List<ChangeSet> runLog(final String fromId, final String toId) throws IOException, VcsException {
    return runCommand(new CommandExecutor<List<ChangeSet>>() {
      public List<ChangeSet> execute(@NotNull final Settings settings) throws VcsException {
        LogCommand lc = new LogCommand(settings);
        lc.setFromRevId(fromId);
        lc.setToRevId(toId);
        return lc.execute();
      }
    });
  }
}