Remove 'main', add tests in TurkishToLatinConversion (#5944)

DIRECTORY.md

@@ -775,6 +775,7 @@
             * [OctalToHexadecimalTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/conversions/OctalToHexadecimalTest.java)
             * [PhoneticAlphabetConverterTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/conversions/PhoneticAlphabetConverterTest.java)
             * [RomanToIntegerTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/conversions/RomanToIntegerTest.java)
+            * [TurkishToLatinConversionTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/conversions/TurkishToLatinConversionTest.java)
             * [UnitConversionsTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/conversions/UnitConversionsTest.java)
             * [UnitsConverterTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/conversions/UnitsConverterTest.java)
           * datastructures

src/main/java/com/thealgorithms/conversions/TurkishToLatinConversion.java

@@ -1,7 +1,5 @@
 package com.thealgorithms.conversions;
 
-import java.util.Scanner;
-
 /**
  * Converts turkish character to latin character
  *
@@ -11,21 +9,12 @@ public final class TurkishToLatinConversion {
     private TurkishToLatinConversion() {
     }
 
-    /**
-     * Main method
-     *
-     * @param args Command line arguments
-     */
-    public static void main(String[] args) {
-        Scanner sc = new Scanner(System.in);
-        System.out.println("Input the string: ");
-        String b = sc.next();
-        System.out.println("Converted: " + convertTurkishToLatin(b));
-        sc.close();
-    }
-
     /**
      * This method converts a turkish character to latin character.
+     * Steps:
+     * 1. Define turkish characters and their corresponding latin characters
+     * 2. Replace all turkish characters with their corresponding latin characters
+     * 3. Return the converted string
      *
      * @param param String paramter
      * @return String

src/test/java/com/thealgorithms/conversions/TurkishToLatinConversionTest.java

@@ -0,0 +1,31 @@
+package com.thealgorithms.conversions;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
+
+public class TurkishToLatinConversionTest {
+
+    @ParameterizedTest
+    @CsvSource({
+        "'çalışma', 'calisma'", // Turkish to Latin conversion for lowercase
+        "'ÇALIŞMA', 'CALISMA'", // Turkish to Latin conversion for uppercase
+        "'İSTANBUL', 'ISTANBUL'", // Special case of 'İ' to 'I'
+        "'istanbul', 'istanbul'", // Special case of 'ı' to 'i'
+        "'GÜL', 'GUL'", // Special case of 'Ü' to 'U'
+        "'gül', 'gul'", // Special case of 'ü' to 'u'
+        "'ÖĞRENME', 'OGRENME'", // Special case of 'Ö' to 'O' and 'Ğ' to 'G'
+        "'öğrenme', 'ogrenme'", // Special case of 'ö' to 'o' and 'ğ' to 'g'
+        "'ŞEHIR', 'SEHIR'", // Special case of 'Ş' to 'S'
+        "'şehir', 'sehir'", // Special case of 'ş' to 's'
+        "'HELLO', 'HELLO'", // String with no Turkish characters, should remain unchanged
+        "'Merhaba Dünya!', 'Merhaba Dunya!'", // Mixed Turkish and Latin characters with punctuation
+        "'Çift kişilik yataklı odalar', 'Cift kisilik yatakli odalar'", // Full sentence conversion
+        "'', ''" // Empty string case
+    })
+    public void
+    testConvertTurkishToLatin(String input, String expectedOutput) {
+        assertEquals(expectedOutput, TurkishToLatinConversion.convertTurkishToLatin(input));
+    }
+}