/*
* Copyright 2010 The Rabbit Eclipse Plug-in Project
*
* 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 rabbit.ui.internal.viewers;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;
import org.eclipse.jface.viewers.TreePath;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
/**
* Tests for {@link TreePaths}
*/
public class TreePathsTest {
private static TreePath newPath() {
return new TreePath(new Object[]{"1", "2", "3"});
}
@Rule
public ExpectedException thrown = ExpectedException.none();
@Test
public void headPathShouldReturnTheCorrectSubPath() {
TreePath path = new TreePath(new Object[]{"a", "b", "c"});
TreePath expected = path.getParentPath();
TreePath actual = TreePaths.headPath(path, path.getSegmentCount() - 1);
assertThat(actual, equalTo(expected));
}
@Test
public void headPathShouldThrowAnExceptionIfIndexIsGreaterThanThePathLength() {
TreePath path = newPath();
thrown.expect(IllegalArgumentException.class);
TreePaths.headPath(path, path.getSegmentCount() + 1);
}
@Test
public void headPathShouldReturnAnEqualPathIfIndexIsEqualToThePathLength() {
TreePath path = newPath();
assertThat(TreePaths.headPath(path, path.getSegmentCount()), equalTo(path));
}
@Test
public void headPathShouldThrowAnExceptionIfIndexIsNegative() {
TreePath path = newPath();
thrown.expect(IllegalArgumentException.class);
TreePaths.headPath(path, -1);
}
@Test
public void indexOfShouldReturnNegative1IfNotFound() {
TreePath path = new TreePath(new Object[]{"a", "b", "c"});
assertThat(TreePaths.indexOf(path, "d"), is(-1));
}
@Test
public void indexOfShouldReturnTheCorrectIndex() {
TreePath path = new TreePath(new Object[]{"a", "b", "c"});
int index = 1; // Index of "b"
assertThat(TreePaths.indexOf(path, "b"), is(index));
}
@Test
public void indexOfShouldReturnTheFirstIndex() {
TreePath path = new TreePath(new Object[]{"a", "a", "a"});
assertThat(TreePaths.indexOf(path, "a"), is(0));
}
@Test
public void indexOfShouldThrowAnExceptionIfPathIsNull() {
thrown.expect(NullPointerException.class);
TreePaths.indexOf(null, "");
}
@Test
public void indexOfShouldThrowAnExceptionIfSegmentIsNull() {
TreePath path = newPath();
thrown.expect(NullPointerException.class);
TreePaths.indexOf(path, null);
}
}