StringValueTest.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.wicket.util.string;

import java.util.Locale;

import org.apache.wicket.util.time.Duration;
import org.apache.wicket.util.time.Time;
import org.junit.Assert;
import org.junit.Test;

@SuppressWarnings("javadoc")
public class StringValueTest extends Assert
{
	/**
	 * WICKET-5359 equals
	 */
	@Test
	public void equals()
	{
		assertFalse(StringValue.valueOf("bla", Locale.FRANCE).equals(
			StringValue.valueOf("bla", Locale.CANADA)));
		assertTrue(StringValue.valueOf("bla", Locale.FRANCE).equals(
			StringValue.valueOf("bla", Locale.FRANCE)));
		assertFalse(StringValue.valueOf("bla", Locale.FRANCE).equals(
			StringValue.valueOf("blo", Locale.FRANCE)));
	}

	/**
	 * https://issues.apache.org/jira/browse/WICKET-4309
	 */
	@Test
	public void toOptionalXyzWithEmptyString()
	{
		StringValue sv = new StringValue("");
		assertNull(sv.toOptionalBoolean());
		assertNull(sv.toOptionalCharacter());
		assertNull(sv.toOptionalDouble());
		assertNull(sv.toOptionalDuration());
		assertNull(sv.toOptionalInteger());
		assertNull(sv.toOptionalLong());
		assertEquals("", sv.toOptionalString());
		assertNull(sv.toOptionalTime());
	}

	/**
	 * https://issues.apache.org/jira/browse/WICKET-4309
	 */
	@Test
	public void toOptionalXyzWithNull()
	{
		StringValue sv = new StringValue(null);
		assertNull(sv.toOptionalBoolean());
		assertNull(sv.toOptionalCharacter());
		assertNull(sv.toOptionalDouble());
		assertNull(sv.toOptionalDuration());
		assertNull(sv.toOptionalInteger());
		assertNull(sv.toOptionalLong());
		assertNull(sv.toOptionalString());
		assertNull(sv.toOptionalTime());
	}

	/**
	 * https://issues.apache.org/jira/browse/WICKET-4356
	 */
	@Test
	public void defaultValues()
	{
		StringValue sv = new StringValue("unknown");

		assertTrue(sv.toBoolean(true));
		assertFalse(sv.toBoolean(false));

		assertEquals(4, sv.toInt(4));
		assertEquals(4.0, sv.toDouble(4.0), 0.005);
		assertEquals('c', sv.toChar('c'));
		assertEquals(Duration.seconds(3), sv.toDuration(Duration.seconds(3)));
		assertEquals(Time.millis(5), sv.toTime(Time.millis(5)));
		assertEquals(40L, sv.toLong(40));

		assertEquals("unknown", sv.toString("def"));
	}

	@Test
	public void toType()
	{
		StringValue sv = new StringValue("4");

		assertEquals(Long.valueOf(4), sv.to(Long.class));
		assertEquals(Integer.valueOf(4), sv.to(Integer.class));
		assertEquals(Double.valueOf(4), sv.to(Double.class));
		assertEquals(Character.valueOf('4'), sv.to(Character.class));
		assertEquals("4", sv.to(String.class));

		try
		{
			sv.to(String[].class);
			fail("Should not be able to convert to unsupported type!");
		}
		catch (StringValueConversionException svcx)
		{
			assertTrue(true);
		}

		sv = new StringValue(null);
		assertNull(sv.toOptional(String.class));
		assertNull(sv.toOptional(String[].class));

		sv = new StringValue("");
		assertNull(sv.toOptional(String.class));
		assertNull(sv.toOptional(String[].class));
	}

	static enum TestEnum {
		FOO, BAR, BAZ
	}

	@Test
	public void enums() 
	{
		assertEquals(TestEnum.FOO, new StringValue("FOO").toEnum(TestEnum.class));
		assertEquals(TestEnum.FOO, new StringValue("FOO").toEnum(TestEnum.BAR));
		assertEquals(TestEnum.FOO, new StringValue("FOO").toEnum(TestEnum.class, TestEnum.BAR));

		assertEquals(TestEnum.BAR, new StringValue(null).toEnum(TestEnum.BAR));
		assertEquals(TestEnum.BAZ, new StringValue("killer rabbit").toEnum(TestEnum.BAZ));
		assertEquals(TestEnum.BAZ,
			new StringValue("killer rabbit").toEnum(TestEnum.class, TestEnum.BAZ));
		assertNull(new StringValue(null).toOptionalEnum(TestEnum.class));
	}

	@Test(expected = StringValueConversionException.class)
	public void failingEnum() throws Exception
	{
		new StringValue("camelot").toEnum(TestEnum.class);
	}

	@Test(expected = StringValueConversionException.class)
	public void failingEnum2() throws Exception
	{
		new StringValue("camelot").toOptionalEnum(TestEnum.class);
	}
}