core-it-support/core-it-plugins/maven-it-plugin-expression/src/test/java/org/apache/maven/plugin/coreit/PropertyUtilTest.java

/*
 * 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.maven.plugin.coreit;

import java.io.File;
import java.util.Arrays;
import java.util.Collections;
import java.util.Properties;

import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertTrue;

/**
 * @author Benjamin Bentmann
 *
 */
public class PropertyUtilTest {

    @Test
    public void testStoreScalar() {
        Properties props = new Properties();
        PropertyUtil.store(props, "null", null);
        PropertyUtil.store(props, "string", "str");
        PropertyUtil.store(props, "boolean", Boolean.TRUE);
        PropertyUtil.store(props, "int", 7);
        PropertyUtil.store(props, "file", new File("pom.xml"));

        assertNull(props.get("null"));
        assertEquals("str", props.get("string"));
        assertEquals("true", props.get("boolean"));
        assertEquals("7", props.get("int"));
        assertEquals("pom.xml", props.get("file"));
        assertEquals(4, props.size());
    }

    @Test
    public void testStoreArray() {
        Properties props = new Properties();
        PropertyUtil.store(props, "arr", new String[] {"one", "two"});

        assertEquals("2", props.get("arr"));
        assertEquals("one", props.get("arr.0"));
        assertEquals("two", props.get("arr.1"));
        assertEquals(3, props.size());
    }

    @Test
    public void testStoreList() {
        Properties props = new Properties();
        PropertyUtil.store(props, "arr", Arrays.asList(new String[] {"one", "two"}));

        assertEquals("2", props.get("arr"));
        assertEquals("one", props.get("arr.0"));
        assertEquals("two", props.get("arr.1"));
        assertEquals(3, props.size());
    }

    @Test
    public void testStoreMap() {
        Properties props = new Properties();
        PropertyUtil.store(props, "map", Collections.singletonMap("key", "value"));

        assertEquals("1", props.get("map"));
        assertEquals("value", props.get("map.key"));
        assertEquals(2, props.size());
    }

    @Test
    public void testStoreBean() {
        Properties props = new Properties();
        PropertyUtil.store(props, "bean", new Bean());

        assertEquals("name", props.get("bean.name"));
        assertEquals("false", props.get("bean.enabled"));
        assertEquals(2, props.size());
    }

    @Test
    public void testStoreCycle() {
        Object[] arr = {null};
        arr[0] = Collections.singleton(Collections.singletonMap("key", arr));

        Properties props = new Properties();
        PropertyUtil.store(props, "cycle", arr);
        assertTrue(true, "Should not die because of stack overflow");
    }

    @Test
    public void testGetPropertyName() {
        assertEquals("name", PropertyUtil.getPropertyName("getName"));
        assertEquals("enabled", PropertyUtil.getPropertyName("isEnabled"));
    }

    public static class Bean {
        public String getName() {
            return "name";
        }

        public boolean isEnabled() {
            return false;
        }

        public String toString() {
            return "excluded";
        }

        public Object getUntypedReturnValue() {
            return "excluded";
        }

        public Bean getCyclicReference() {
            return this;
        }
    }
}