25 lines
962 B
Java
25 lines
962 B
Java
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package com.baeldung.stringisnumeric;
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import org.apache.commons.lang3.StringUtils;
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import org.junit.Test;
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import static org.assertj.core.api.Assertions.assertThat;
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public class StringUtilsIsNumericUnitTest {
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@Test
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public void givenApacheCommons_whenUsingIsNumeric_thenTrue() {
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// Valid Numbers
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assertThat(StringUtils.isNumeric("123")).isTrue();
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assertThat(StringUtils.isNumeric("١٢٣")).isTrue();
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assertThat(StringUtils.isNumeric("१२३")).isTrue();
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// Invalid Numbers
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assertThat(StringUtils.isNumeric(null)).isFalse();
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assertThat(StringUtils.isNumeric("")).isFalse();
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assertThat(StringUtils.isNumeric(" ")).isFalse();
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assertThat(StringUtils.isNumeric("12 3")).isFalse();
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assertThat(StringUtils.isNumeric("ab2c")).isFalse();
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assertThat(StringUtils.isNumeric("12.3")).isFalse();
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assertThat(StringUtils.isNumeric("-123")).isFalse();
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}
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}
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