[BAEL-3348] Moved code to algorithm-4

java-strings/src/test/java/com/baeldung/CharArrayToStringUnitTest.java

@@ -0,0 +1,62 @@
+package com.baeldung;
+
+import static org.junit.Assert.*;
+
+import org.junit.Test;
+
+public class CharArrayToStringUnitTest {
+
+    @Test
+    public void givenCharArray_whenCallingStringConstructor_shouldConvertToString() {
+        char[] charArray = { 'c', 'h', 'a', 'r', 'a', 'c', 't', 'e', 'r' };
+        String result = new String(charArray);
+        String expectedValue = "character";
+
+        assertEquals(expectedValue, result);
+    }
+
+    @Test
+    public void givenCharArray_whenCallingStringConstructorWithOffsetAndLength_shouldConvertToString() {
+        char[] charArray = { 'c', 'h', 'a', 'r', 'a', 'c', 't', 'e', 'r' };
+        String result = new String(charArray, 4, 3);
+        String expectedValue = "act";
+
+        assertEquals(expectedValue, result);
+    }
+
+    @Test
+    public void givenCharArray_whenCallingStringCopyValueOf_shouldConvertToString() {
+        char[] charArray = { 'c', 'h', 'a', 'r', 'a', 'c', 't', 'e', 'r' };
+        String result = String.copyValueOf(charArray);
+        String expectedValue = "character";
+
+        assertEquals(expectedValue, result);
+    }
+
+    @Test
+    public void givenCharArray_whenCallingStringCopyValueOfWithOffsetAndLength_shouldConvertToString() {
+        char[] charArray = { 'c', 'h', 'a', 'r', 'a', 'c', 't', 'e', 'r' };
+        String result = String.copyValueOf(charArray, 0, 4);
+        String expectedValue = "char";
+
+        assertEquals(expectedValue, result);
+    }
+
+    @Test
+    public void givenCharArray_whenCallingStringValueOf_shouldConvertToString() {
+        char[] charArray = { 'c', 'h', 'a', 'r', 'a', 'c', 't', 'e', 'r' };
+        String result = String.valueOf(charArray);
+        String expectedValue = "character";
+
+        assertEquals(expectedValue, result);
+    }
+
+    @Test
+    public void givenCharArray_whenCallingStringValueOfWithOffsetAndLength_shouldConvertToString() {
+        char[] charArray = { 'c', 'h', 'a', 'r', 'a', 'c', 't', 'e', 'r' };
+        String result = String.valueOf(charArray, 3, 4);
+        String expectedValue = "ract";
+
+        assertEquals(expectedValue, result);
+    }
+}