Merge pull request #823 from khatwaniNikhil/BAEL-29-StringConversions-UnitTest

BAEL-29 Refactored Code to comeup with Unit Test

core-java/src/main/java/com/baeldung/java/conversion/StringConversion.java

@@ -1,60 +0,0 @@
-package com.baeldung.java.conversion;
-
-import java.text.ParseException;
-import java.text.SimpleDateFormat;
-import java.time.LocalDateTime;
-import java.util.Date;
-
-import com.baeldung.datetime.UseLocalDateTime;
-
-public class StringConversion {
-
-    public static int getInt(String str) {
-        return Integer.parseInt(str);
-    }
-
-    public static int getInteger(String str) {
-        return Integer.valueOf(str);
-    }
-
-    public static long getLongPrimitive(String str) {
-        return Long.parseLong(str);
-    }
-
-    public static Long getLong(String str) {
-        return Long.valueOf(str);
-    }
-
-    public static double getDouble(String str) {
-        return Double.parseDouble(str);
-    }
-
-    public static double getDoublePrimitive(String str) {
-        return Double.valueOf(str);
-    }
-
-    public static byte[] getByteArray(String str) {
-        return str.getBytes();
-    }
-
-    public static char[] getCharArray(String str) {
-        return str.toCharArray();
-    }
-
-    public static boolean getBooleanPrimitive(String str) {
-        return Boolean.parseBoolean(str);
-    }
-
-    public static boolean getBoolean(String str) {
-        return Boolean.valueOf(str);
-    }
-
-    public static Date getJava6Date(String str, String format) throws ParseException {
-        SimpleDateFormat formatter = new SimpleDateFormat(format);
-        return formatter.parse(str);
-    }
-
-    public static LocalDateTime getJava8Date(String str) throws ParseException {
-        return new UseLocalDateTime().getLocalDateTimeUsingParseMethod(str);
-    }
-}

core-java/src/test/java/com/baeldung/java/conversion/StringConversionTest.java

@@ -0,0 +1,97 @@
+package com.baeldung.java.conversion;
+
+import static org.junit.Assert.assertEquals;
+
+import java.io.UnsupportedEncodingException;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.time.LocalDateTime;
+import java.time.Month;
+import java.util.Arrays;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.GregorianCalendar;
+
+import org.junit.Test;
+
+import com.baeldung.datetime.UseLocalDateTime;
+
+public class StringConversionTest {
+
+    @Test
+    public void whenConvertedToInt_thenCorrect() {
+        assertEquals(Integer.parseInt("1"), 1);
+    }
+
+    @Test
+    public void whenConvertedToInteger_thenCorrect() {
+        assertEquals(Integer.valueOf("12").equals(12), true);
+    }
+
+    @Test
+    public void whenConvertedTolong_thenCorrect() {
+        assertEquals(Long.parseLong("12345"), 12345);
+    }
+
+    @Test
+    public void whenConvertedToLong_thenCorrect() {
+        assertEquals(Long.valueOf("14567").equals(14567L), true);
+    }
+
+    @Test
+    public void whenConvertedTodouble_thenCorrect() {
+        assertEquals(Double.parseDouble("1.4"), 1.4, 0.0);
+    }
+
+    @Test
+    public void whenConvertedToDouble_thenCorrect() {
+        assertEquals(Double.valueOf("145.67").equals(145.67d), true);
+    }
+
+    @Test
+    public void whenConvertedToByteArray_thenCorrect() throws UnsupportedEncodingException {
+        byte[] byteArray1 = new byte[] { 'a', 'b', 'c' };
+        String string = new String(byteArray1, "UTF-8");
+
+        assertEquals(Arrays.equals(string.getBytes(), byteArray1), true);
+    }
+
+    @Test
+    public void whenConvertedToboolean_thenCorrect() {
+        assertEquals(Boolean.parseBoolean("true"), true);
+    }
+
+    @Test
+    public void whenConvertedToBoolean_thenCorrect() {
+        assertEquals(Boolean.valueOf("true"), true);
+    }
+
+    @Test
+    public void whenConvertedToCharArray_thenCorrect() {
+        String str = "hello";
+        char[] charArray = { 'h', 'e', 'l', 'l', 'o' };
+
+        assertEquals(Arrays.equals(charArray, str.toCharArray()), true);
+    }
+
+    @Test
+    public void whenConvertedToDate_thenCorrect() throws ParseException {
+        String str = "15/10/2013";
+        SimpleDateFormat formatter = new SimpleDateFormat("dd/M/yyyy");
+        Date date1 = formatter.parse(str);
+        Calendar calendar = new GregorianCalendar(2013, 9, 15);
+        Date date2 = calendar.getTime();
+
+        assertEquals(date1.compareTo(date2), 0);
+    }
+
+    @Test
+    public void whenConvertedToLocalDateTime_thenCorrect() throws ParseException {
+        String str = "2007-12-03T10:15:30";
+        LocalDateTime localDateTime = new UseLocalDateTime().getLocalDateTimeUsingParseMethod(str);
+
+        assertEquals(localDateTime.getDayOfMonth(), 3);
+        assertEquals(localDateTime.getMonth(), Month.DECEMBER);
+        assertEquals(localDateTime.getYear(), 2007);
+    }
+}