NumberUtilsTest.java

/**
 * The MIT License
 * Copyright © 2010 JmxTrans team
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.googlecode.jmxtrans.util;

import org.junit.Test;

import static com.googlecode.jmxtrans.util.NumberUtils.isNumeric;
import static com.googlecode.jmxtrans.util.NumberUtils.isValidNumber;
import static java.lang.Boolean.FALSE;
import static org.assertj.core.api.Assertions.assertThat;

public class NumberUtilsTest {
	@Test
	public void testIsNumeric() {
		assertThat(isNumeric(null)).isFalse();
		assertThat(isNumeric("")).isTrue(); // this is "true" for historical
		// reasons
		assertThat(isNumeric("  ")).isFalse();
		assertThat(isNumeric("123")).isTrue();
		assertThat(isNumeric("12 3")).isFalse();
		assertThat(isNumeric("ab2c")).isFalse();
		assertThat(isNumeric("12-3")).isFalse();
		assertThat(isNumeric("12.3")).isTrue();
		assertThat(isNumeric("12.3.3.3")).isFalse();
		assertThat(isNumeric(".2")).isTrue();
		assertThat(isNumeric(".")).isFalse();
		assertThat(isNumeric(1L)).isTrue();
		assertThat(isNumeric(2)).isTrue();
		assertThat(isNumeric((Object) "3.2")).isTrue();
		assertThat(isNumeric((Object) "abc")).isFalse();
		assertThat(isNumeric(FALSE)).isFalse();

		assertThat(isNumeric(String.valueOf(Double.NEGATIVE_INFINITY))).isFalse();
	}

	@Test
	public void testIsValidNumber() {
		assertThat(isValidNumber(Long.MAX_VALUE)).isTrue();
		assertThat(isValidNumber(Long.MIN_VALUE)).isTrue();
		assertThat(isValidNumber(Double.MIN_VALUE)).isTrue();
		assertThat(isValidNumber(Double.MAX_VALUE)).isTrue();
		assertThat(isValidNumber(Float.MAX_VALUE)).isTrue();
		assertThat(isValidNumber(Float.MIN_VALUE)).isTrue();
		assertThat(isValidNumber(0L)).isTrue();
		assertThat(isValidNumber(0D)).isTrue();
		assertThat(isValidNumber(0)).isTrue();
		assertThat(isValidNumber(0x0F)).isTrue();
		assertThat(isValidNumber("1")).isTrue();
		assertThat(isValidNumber("1.00")).isTrue();
		assertThat(isValidNumber("-1.00")).isTrue();
		assertThat(isValidNumber("-1")).isTrue();

		assertThat(isValidNumber(Double.NaN)).isFalse();
		assertThat(isValidNumber(Double.POSITIVE_INFINITY)).isFalse();
		assertThat(isValidNumber(Double.NEGATIVE_INFINITY)).isFalse();

		assertThat(isValidNumber(String.valueOf(Double.NaN))).isFalse();
		assertThat(isValidNumber(String.valueOf(Double.POSITIVE_INFINITY))).isFalse();
		assertThat(isValidNumber(String.valueOf(Double.NEGATIVE_INFINITY))).isFalse();

		assertThat(isValidNumber(Float.NaN)).isFalse();
		assertThat(isValidNumber(Float.POSITIVE_INFINITY)).isFalse();
		assertThat(isValidNumber(Float.NEGATIVE_INFINITY)).isFalse();

		assertThat(isValidNumber(String.valueOf(Float.NaN))).isFalse();
		assertThat(isValidNumber(String.valueOf(Float.POSITIVE_INFINITY))).isFalse();
		assertThat(isValidNumber(String.valueOf(Float.NEGATIVE_INFINITY))).isFalse();
	}
}