/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.isis.applib.util;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.nullValue;
import static org.junit.Assert.assertThat;
import org.junit.Test;
public class ReasonsTest {
@Test
public void testNoReasonReturnsNull() throws Exception {
assertThat(Reasons.coalesce(), is(nullValue()));
}
@Test
public void testSingleNullReturnsNull() throws Exception {
assertThat(Reasons.coalesce((String) null), is(nullValue()));
}
@Test
public void testSingleNonNullReturnsSame() throws Exception {
assertThat(Reasons.coalesce("yada"), is("yada"));
}
@Test
public void testNullThenNonNullReturnsLatter() throws Exception {
assertThat(Reasons.coalesce(null, "yada"), is("yada"));
}
@Test
public void testNotNullThenNonNullReturnsBothConcatenated() throws Exception {
assertThat(Reasons.coalesce("foobar", "yada"), is("foobar; yada"));
}
@Test
public void testNotNullThenNullBothFormer() throws Exception {
assertThat(Reasons.coalesce("foobar", null), is("foobar"));
}
@Test
public void testNullsAreSkippedThenNonNull() throws Exception {
assertThat(Reasons.coalesce("foobar", null, "yada"), is("foobar; yada"));
}
}