129 lines
4.0 KiB
Java
129 lines
4.0 KiB
Java
package com.baeldung.java.conversion;
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import static org.junit.Assert.assertEquals;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.time.LocalDateTime;
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import java.time.Month;
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import java.util.Arrays;
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import java.util.Calendar;
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import java.util.Date;
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import java.util.GregorianCalendar;
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import org.junit.Test;
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import com.baeldung.datetime.UseLocalDateTime;
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public class StringConversionUnitTest {
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@Test
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public void whenConvertedToInt_thenCorrect() {
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String beforeConvStr = "1";
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int afterConvInt = 1;
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assertEquals(Integer.parseInt(beforeConvStr), afterConvInt);
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}
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@Test
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public void whenConvertedToInteger_thenCorrect() {
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String beforeConvStr = "12";
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Integer afterConvInteger = 12;
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assertEquals(Integer.valueOf(beforeConvStr).equals(afterConvInteger), true);
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}
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@Test
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public void whenConvertedTolong_thenCorrect() {
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String beforeConvStr = "12345";
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long afterConvLongPrimitive = 12345;
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assertEquals(Long.parseLong(beforeConvStr), afterConvLongPrimitive);
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}
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@Test
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public void whenConvertedToLong_thenCorrect() {
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String beforeConvStr = "14567";
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Long afterConvLong = 14567l;
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assertEquals(Long.valueOf(beforeConvStr).equals(afterConvLong), true);
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}
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@Test
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public void whenConvertedTodouble_thenCorrect() {
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String beforeConvStr = "1.4";
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double afterConvDoublePrimitive = 1.4;
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assertEquals(Double.parseDouble(beforeConvStr), afterConvDoublePrimitive, 0.0);
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}
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@Test
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public void whenConvertedToDouble_thenCorrect() {
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String beforeConvStr = "145.67";
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double afterConvDouble = 145.67d;
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assertEquals(Double.valueOf(beforeConvStr).equals(afterConvDouble), true);
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}
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@Test
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public void whenConvertedToByteArr_thenCorrect() {
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String beforeConvStr = "abc";
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byte[] afterConvByteArr = new byte[] { 'a', 'b', 'c' };
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assertEquals(Arrays.equals(beforeConvStr.getBytes(), afterConvByteArr), true);
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}
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@Test
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public void whenConvertedToboolean_thenCorrect() {
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String beforeConvStr = "true";
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boolean afterConvBooleanPrimitive = true;
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assertEquals(Boolean.parseBoolean(beforeConvStr), afterConvBooleanPrimitive);
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}
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@Test
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public void whenConvertedToBoolean_thenCorrect() {
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String beforeConvStr = "true";
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Boolean afterConvBoolean = true;
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assertEquals(Boolean.valueOf(beforeConvStr), afterConvBoolean);
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}
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@Test
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public void whenConvertedToCharArr_thenCorrect() {
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String beforeConvStr = "hello";
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char[] afterConvCharArr = { 'h', 'e', 'l', 'l', 'o' };
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assertEquals(Arrays.equals(beforeConvStr.toCharArray(), afterConvCharArr), true);
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}
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@Test
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public void whenConvertedToDate_thenCorrect() throws ParseException {
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String beforeConvStr = "15/10/2013";
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int afterConvCalendarDay = 15;
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int afterConvCalendarMonth = 9;
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int afterConvCalendarYear = 2013;
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SimpleDateFormat formatter = new SimpleDateFormat("dd/M/yyyy");
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Date afterConvDate = formatter.parse(beforeConvStr);
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Calendar calendar = new GregorianCalendar();
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calendar.setTime(afterConvDate);
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assertEquals(calendar.get(Calendar.DAY_OF_MONTH), afterConvCalendarDay);
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assertEquals(calendar.get(Calendar.MONTH), afterConvCalendarMonth);
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assertEquals(calendar.get(Calendar.YEAR), afterConvCalendarYear);
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}
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@Test
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public void whenConvertedToLocalDateTime_thenCorrect() {
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String str = "2007-12-03T10:15:30";
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int afterConvCalendarDay = 03;
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Month afterConvCalendarMonth = Month.DECEMBER;
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int afterConvCalendarYear = 2007;
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LocalDateTime afterConvDate = new UseLocalDateTime().getLocalDateTimeUsingParseMethod(str);
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assertEquals(afterConvDate.getDayOfMonth(), afterConvCalendarDay);
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assertEquals(afterConvDate.getMonth(), afterConvCalendarMonth);
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assertEquals(afterConvDate.getYear(), afterConvCalendarYear);
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}
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}
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