/*
 * SonarQube
 * Copyright (C) 2009-2021 SonarSource SA
 * mailto:info AT sonarsource DOT com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.sonar.ce.task.projectanalysis.scm;

import org.junit.Test;

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;

public class ScmInfoImplTest {


  static final Changeset CHANGESET_1 = Changeset.newChangesetBuilder()
    .setAuthor("john")
    .setDate(123456789L)
    .setRevision("rev-1")
    .build();

  static final Changeset CHANGESET_2 = Changeset.newChangesetBuilder()
    .setAuthor("henry")
    .setDate(1234567810L)
    .setRevision("rev-2")
    .build();

  @Test
  public void get_all_changesets() {
    ScmInfo scmInfo = createScmInfoWithTwoChangestOnFourLines();

    assertThat(scmInfo.getAllChangesets()).contains(CHANGESET_1, CHANGESET_2, CHANGESET_1, CHANGESET_1);
  }

  @Test
  public void get_latest_changeset() {
    ScmInfo scmInfo = createScmInfoWithTwoChangestOnFourLines();

    assertThat(scmInfo.getLatestChangeset()).isEqualTo(CHANGESET_2);
  }

  @Test
  public void get_changeset_for_given_line() {
    ScmInfo scmInfo = createScmInfoWithTwoChangestOnFourLines();

    assertThat(scmInfo.getChangesetForLine(1)).isEqualTo(CHANGESET_1);
    assertThat(scmInfo.getChangesetForLine(2)).isEqualTo(CHANGESET_2);
    assertThat(scmInfo.getChangesetForLine(3)).isEqualTo(CHANGESET_1);
    assertThat(scmInfo.getChangesetForLine(4)).isEqualTo(CHANGESET_1);
  }

  @Test
  public void exists_for_given_line() {
    ScmInfo scmInfo = createScmInfoWithTwoChangestOnFourLines();

    assertThat(scmInfo.hasChangesetForLine(1)).isTrue();
    assertThat(scmInfo.hasChangesetForLine(5)).isFalse();
  }

  @Test
  public void fail_with_ISE_on_empty_changeset() {
    assertThatThrownBy(() -> new ScmInfoImpl(new Changeset[0]))
      .isInstanceOf(IllegalStateException.class)
      .hasMessage("ScmInfo cannot be empty");
  }

  @Test
  public void fail_with_IAE_when_line_is_smaller_than_one() {
    assertThatThrownBy(() -> {
      ScmInfo scmInfo = createScmInfoWithTwoChangestOnFourLines();
      scmInfo.getChangesetForLine(0);
    })
      .isInstanceOf(IllegalArgumentException.class)
      .hasMessage("There's no changeset on line 0");
  }

  @Test
  public void fail_with_IAE_when_line_is_bigger_than_changetset_size() {
    assertThatThrownBy(() -> {
      ScmInfo scmInfo = createScmInfoWithTwoChangestOnFourLines();
      scmInfo.getChangesetForLine(5);
    })
      .isInstanceOf(IllegalArgumentException.class)
      .hasMessage("There's no changeset on line 5");
  }

  @Test
  public void test_to_string() {
    ScmInfo scmInfo = createScmInfoWithTwoChangestOnFourLines();

    assertThat(scmInfo).hasToString("ScmInfoImpl{" +
      "latestChangeset=Changeset{revision='rev-2', author='henry', date=1234567810}, " +
      "lineChangesets={" +
      "1=Changeset{revision='rev-1', author='john', date=123456789}, " +
      "2=Changeset{revision='rev-2', author='henry', date=1234567810}, " +
      "3=Changeset{revision='rev-1', author='john', date=123456789}, " +
      "4=Changeset{revision='rev-1', author='john', date=123456789}" +
      "}}");
  }

  private static ScmInfo createScmInfoWithTwoChangestOnFourLines() {
    Changeset changeset1 = Changeset.newChangesetBuilder()
      .setAuthor("john")
      .setDate(123456789L)
      .setRevision("rev-1")
      .build();
    // Latest changeset
    Changeset changeset2 = Changeset.newChangesetBuilder()
      .setAuthor("henry")
      .setDate(1234567810L)
      .setRevision("rev-2")
      .build();

    return new ScmInfoImpl(new Changeset[] {changeset1, changeset2, changeset1, changeset1});
  }
}