diff --git a/src/main/java/org/fundacionjala/coding/Fernando/StringInv/StringInv.java b/src/main/java/org/fundacionjala/coding/Fernando/StringInv/StringInv.java
new file mode 100644
index 0000000..e857b1b
--- /dev/null
+++ b/src/main/java/org/fundacionjala/coding/Fernando/StringInv/StringInv.java
@@ -0,0 +1,36 @@
+package org.fundacionjala.coding.Fernando.StringInv;
+
+/**
+ * Write a description of class StringInv here.
+ *
+ * @author (your name)
+ * @version (a version number or a date)
+ */
+public final class StringInv {
+
+    static final int MAJOR_FIVE_LETTERS = 5;
+
+    /**
+     * Constructor StringInv.
+     */
+    private StringInv() {
+    }
+
+    /**
+     * @param text param.
+     * @return String param.
+     */
+    public static String stringInv(final String text) {
+        int pos = 0;
+        String[] parts = text.split(" ");
+        while (pos < parts.length) {
+            if (parts[pos].length() > MAJOR_FIVE_LETTERS) {
+                parts[pos] = new StringBuilder(parts[pos]).reverse().toString();
+            }
+            pos++;
+        }
+        return String.join(" ", parts);
+
+    }
+
+}
diff --git a/src/main/java/org/fundacionjala/coding/Fernando/average/Average.java b/src/main/java/org/fundacionjala/coding/Fernando/average/Average.java
new file mode 100644
index 0000000..3526fb8
--- /dev/null
+++ b/src/main/java/org/fundacionjala/coding/Fernando/average/Average.java
@@ -0,0 +1,43 @@
+package org.fundacionjala.coding.Fernando.average;
+
+/**
+ * Write a description of class Average here.
+ *
+ * @author (your name)
+ * @version (a version number or a date)
+ */
+public final class Average {
+
+    /**
+     * Constructor Average.
+     */
+    private Average() {
+    }
+
+    /**
+     * @param num the method has a int value.
+     * @return double value.
+     */
+    public static double[] average(final int[] num) {
+        double[] res = {};
+        if (num != null && num.length != 0) {
+            return average(num, 0);
+        }
+        return res;
+    }
+
+    /**
+     * @param num  the method has a int value.
+     * @param pos1 param.
+     * @return double value.
+     */
+    private static double[] average(final int[] num, final int pos1) {
+        double[] res = new double[num.length - 1];
+        for (int pos = 0; pos < num.length - 1; pos++) {
+            double prom = (double) (num[pos] + num[pos + 1]) / 2;
+            res[pos] = prom;
+        }
+        return res;
+
+    }
+}
diff --git a/src/main/java/org/fundacionjala/coding/Fernando/bankOCR/BankOCR.java b/src/main/java/org/fundacionjala/coding/Fernando/bankOCR/BankOCR.java
new file mode 100644
index 0000000..1acee84
--- /dev/null
+++ b/src/main/java/org/fundacionjala/coding/Fernando/bankOCR/BankOCR.java
@@ -0,0 +1,142 @@
+package org.fundacionjala.coding.Fernando.bankOCR;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.stream.Stream;
+
+/**
+ * Created by PC on 24/06/2017.
+ */
+public final class BankOCR {
+
+    private static final int ZERO = 0;
+    private static final int ONE = 1;
+    private static final int TWO = 2;
+    private static final int THREE = 3;
+    private static final int FOUR = 4;
+    private static final int FIVE = 5;
+    private static final int SIX = 6;
+    private static final int SEVEN = 7;
+    private static final int EIGHT = 8;
+    private static final int NINE = 9;
+    private static final Map<Integer, String> MAP = new HashMap<>();
+    static final int VALIDATOR = 11;
+
+    static {
+        MAP.put(ZERO,
+                " _ "
+                        + "| |"
+                        + "|_|");
+        MAP.put(ONE,
+                "   "
+                        + "  |"
+                        + "  |");
+        MAP.put(TWO,
+                " _ "
+                        + " _|"
+                        + "|_ ");
+        MAP.put(THREE,
+                "__ "
+                        + " _|"
+                        + "__|");
+        MAP.put(FOUR,
+                "   "
+                        + "|_|"
+                        + "  |");
+        MAP.put(FIVE,
+                " _ "
+                        + "|_ "
+                        + " _|");
+        MAP.put(SIX,
+                " _ "
+                        + "|_ "
+                        + "|_|");
+        MAP.put(SEVEN,
+                "__ "
+                        + "  |"
+                        + "  |");
+        MAP.put(EIGHT,
+                " _ "
+                        + "|_|"
+                        + "|_|");
+        MAP.put(NINE,
+                " _ "
+                        + "|_|"
+                        + " _|");
+    }
+
+    /**
+     * Constructor bankOCR.
+     */
+    private BankOCR() {
+
+    }
+
+    /**
+     * @param value of string numbers.
+     * @return String of value number.
+     */
+    private static String getMapKey(final String value) {
+        String res = "?";
+        for (Map.Entry<Integer, String> entry : MAP.entrySet()) {
+            if (entry.getValue().equals(value)) {
+                res = entry.getKey().toString();
+            }
+        }
+        return res;
+    }
+
+    /**
+     * @param cad value of string numbers.
+     * @return String to get the all numbers.
+     */
+    public static String parseDigit(final String[] cad) {
+        String res = "";
+        StringBuilder value = new StringBuilder();
+        for (String data : cad) {
+            res = value.append(getMapKey(data)).toString();
+        }
+
+        return res;
+    }
+
+    /**
+     * @param cad value of string numbers.
+     * @return String to get the ERR o ILL error result.
+     */
+    public static String accountStatus(final String cad) {
+        String res = "";
+        if (!digit(cad)) {
+            res = "ILL";
+        } else if (!validAccountNumbers(cad)) {
+            res = "ERR";
+        }
+        return res;
+    }
+
+    /**
+     * @param data value of string numbers.
+     * @return boolean to get if is a valid digit.
+     */
+    private static boolean digit(final String data) {
+        return Stream.of(data.split("")).
+                filter(a -> Character.isDigit(a.charAt(0))).count() > 0;
+    }
+
+    /**
+     * @param input String value.
+     * @return boolean valor if is valid account number.
+     */
+    public static boolean validAccountNumbers(final String input) {
+        int suma = 0;
+        for (int i = input.length() - 1; i >= 0; i--) {
+            int multiplier = 1;
+            int x = (int) (input.charAt(i)) * multiplier;
+            suma += x;
+            multiplier++;
+        }
+        return suma % VALIDATOR == 0;
+    }
+
+}
+
diff --git a/src/main/java/org/fundacionjala/coding/Fernando/checkSum/CheckSum.java b/src/main/java/org/fundacionjala/coding/Fernando/checkSum/CheckSum.java
new file mode 100644
index 0000000..50bb16c
--- /dev/null
+++ b/src/main/java/org/fundacionjala/coding/Fernando/checkSum/CheckSum.java
@@ -0,0 +1,51 @@
+package org.fundacionjala.coding.Fernando.checkSum;
+
+/**
+ * Write a description of class checkSum here.
+ *
+ * @author (your name)
+ * @version (a version number or a date)
+ */
+public final class CheckSum {
+    static final int THREE = 3;
+    static final int ONE = 1;
+    static final int TEN = 10;
+    static final int TWO = 2;
+    static final int EIGHT = 8;
+    static final int ZERO = 0;
+    static final int SIZEVALUE = 13;
+
+    /**
+     * Constructor checksum.
+     */
+    private CheckSum() {
+
+    }
+
+    /**
+     * @param value data.
+     * @return boolean of cant values.
+     */
+    public static boolean canValues(final String value) {
+        int sum = ZERO;
+        if (value.length() != SIZEVALUE) {
+            return false;
+        }
+        for (int i = ONE; i < value.length(); i++) {
+            int num = Character.getNumericValue(value.charAt(i - 1));
+            sum += i % 2 == 0 ? num * THREE : num;
+        }
+        return validNum(sum) == Character.getNumericValue(value.charAt(value.length() - 1));
+    }
+
+    /**
+     * @param sum of values.
+     * @return int of number valid.
+     */
+    public static int validNum(final int sum) {
+        int result = sum % TEN;
+        return result != 0 ? TEN - result : 0;
+
+    }
+
+}
diff --git a/src/main/java/org/fundacionjala/coding/Fernando/evaporator/Evaporator.java b/src/main/java/org/fundacionjala/coding/Fernando/evaporator/Evaporator.java
new file mode 100644
index 0000000..da1ff8a
--- /dev/null
+++ b/src/main/java/org/fundacionjala/coding/Fernando/evaporator/Evaporator.java
@@ -0,0 +1,34 @@
+package org.fundacionjala.coding.Fernando.evaporator;
+
+/**
+ * Created by Administrator on 6/28/2017.
+ */
+public final class Evaporator {
+
+    private static final int PERCENTAGE_TOTAL = 100;
+
+    /**
+     * Constructor evaporator kata.
+     */
+    private Evaporator() {
+    }
+
+    /**
+     * @param content    content containing.
+     * @param evapPerDay evaporation day.
+     * @param limit  limit.
+     * @return life of an evaporator containing gas.
+     */
+
+    public static int evaporator(final double content, final double evapPerDay, final double limit) {
+        int res = 0;
+        double reduceConten = content;
+        double limitContent = content * limit / PERCENTAGE_TOTAL;
+        while (reduceConten >= limitContent) {
+            reduceConten = reduceConten - (reduceConten * evapPerDay / PERCENTAGE_TOTAL);
+            res++;
+        }
+        return res;
+    }
+}
+
diff --git a/src/main/java/org/fundacionjala/coding/Fernando/haghestandlowest/HighAndLow.java b/src/main/java/org/fundacionjala/coding/Fernando/haghestandlowest/HighAndLow.java
new file mode 100644
index 0000000..c7ed403
--- /dev/null
+++ b/src/main/java/org/fundacionjala/coding/Fernando/haghestandlowest/HighAndLow.java
@@ -0,0 +1,36 @@
+package org.fundacionjala.coding.Fernando.haghestandlowest;
+
+/**
+ * Created by PC on 24/06/2017.
+ */
+public final class HighAndLow {
+
+    /**
+     * Method constructor.
+     */
+    private HighAndLow() {
+    }
+
+    /**
+     * This method get the high and low number.
+     *
+     * @param numbers to get the high and low number.
+     * @return String method.
+     */
+    static String highAndLowest(final String numbers) {
+        String[] value = numbers.split(" ");
+        int majorNumber = Integer.parseInt(value[0]);
+        int minorNumber = majorNumber;
+        for (String res : value) {
+            int num = Integer.parseInt(res);
+            if (num > majorNumber) {
+                majorNumber = Integer.parseInt(res);
+            }
+            if (num < minorNumber) {
+                minorNumber = Integer.parseInt(res);
+            }
+        }
+
+        return String.format("%d %d", majorNumber, minorNumber);
+    }
+}
diff --git a/src/main/java/org/fundacionjala/coding/Fernando/movies/Children.java b/src/main/java/org/fundacionjala/coding/Fernando/movies/Children.java
new file mode 100644
index 0000000..950fc03
--- /dev/null
+++ b/src/main/java/org/fundacionjala/coding/Fernando/movies/Children.java
@@ -0,0 +1,39 @@
+package org.fundacionjala.coding.Fernando.movies;
+
+/**
+ * Created by Administrator on 3/21/2017.
+ */
+public class Children extends Movie {
+    private static final int LIMITNEWCHILD = 3;
+    private static final double PRICE = 1.5;
+    private static final int RENT_ONE_DAY = 1;
+
+    /**
+     * @param title param.
+     */
+    public Children(final String title) {
+        super(title);
+    }
+
+    /**
+     * @param daysRented param.
+     * @return double value.
+     */
+    @Override
+    public double calculateAmount(final int daysRented) {
+        double amount = PRICE;
+        if (daysRented > LIMITNEWCHILD) {
+            amount += (daysRented - LIMITNEWCHILD) * PRICE;
+        }
+        return amount;
+    }
+
+    /**
+     * @param daysRented param.
+     * @return int value.
+     */
+    @Override
+    public int calculateFrequentRenterPoints(final int daysRented) {
+        return RENT_ONE_DAY;
+    }
+}
diff --git a/src/main/java/org/fundacionjala/coding/Fernando/movies/Customer.java b/src/main/java/org/fundacionjala/coding/Fernando/movies/Customer.java
new file mode 100644
index 0000000..be257cb
--- /dev/null
+++ b/src/main/java/org/fundacionjala/coding/Fernando/movies/Customer.java
@@ -0,0 +1,68 @@
+package org.fundacionjala.coding.Fernando.movies;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * This is the class Customer of rental movies.
+ */
+public class Customer {
+    private String nameCustomer;
+    private List<Rental> rentalsCustomer;
+
+    /**
+     * @param nameCustomer String with words.
+     *                     Constructor.
+     */
+    public Customer(final String nameCustomer) {
+        this.nameCustomer = nameCustomer;
+        rentalsCustomer = new ArrayList<>();
+    }
+
+    /**
+     * @param rental String with words.
+     */
+    public void addRental(final Rental rental) {
+        rentalsCustomer.add(rental);
+    }
+
+    /**
+     * @return the nameCustomer string.
+     */
+    public String getName() {
+        return this.nameCustomer;
+    }
+
+    /**
+     * @return the string.
+     */
+    public String generateDetail() {
+        StringBuilder result = new StringBuilder();
+        result.append(String.format("Rental Record for %s %n", getName()));
+        for (Rental rental : rentalsCustomer) {
+            result.append(String.format("\t %s \t", rental.getMovie().getTitle()));
+            result.append(String.format("%f %n", rental.calculateAmount()));
+        }
+        result.append(String.format("Amount owed is %f %n", calculateTotalAmount()));
+        result.append(String.format("You earned %d frequent renter points", calculateTotalFrequentRenterPoints()));
+        return result.toString();
+    }
+
+    /**
+     * @return double value.
+     */
+    public double calculateTotalAmount() {
+        return rentalsCustomer.stream()
+                .mapToDouble(Rental::calculateAmount)
+                .sum();
+    }
+
+    /**
+     * @return int value.
+     */
+    public int calculateTotalFrequentRenterPoints() {
+        return rentalsCustomer.stream()
+                .mapToInt(rental -> rental.calculateFrequentRenterPoint())
+                .sum();
+    }
+}
diff --git a/src/main/java/org/fundacionjala/coding/Fernando/movies/Movie.java b/src/main/java/org/fundacionjala/coding/Fernando/movies/Movie.java
new file mode 100644
index 0000000..c64df4f
--- /dev/null
+++ b/src/main/java/org/fundacionjala/coding/Fernando/movies/Movie.java
@@ -0,0 +1,34 @@
+package org.fundacionjala.coding.Fernando.movies;
+
+/**
+ * Created by Administrator on 3/21/2017.
+ */
+public abstract class Movie {
+    private String title;
+
+    /**
+     * @param title param.
+     */
+    public Movie(final String title) {
+        this.title = title;
+    }
+
+    /**
+     * @param daysRented param.
+     * @return double value.
+     */
+    public abstract double calculateAmount(int daysRented);
+
+    /**
+     * @param daysRented param.
+     * @return int value.
+     */
+    public abstract int calculateFrequentRenterPoints(int daysRented);
+
+    /**
+     * @return String value.
+     */
+    public String getTitle() {
+        return title;
+    }
+}
diff --git a/src/main/java/org/fundacionjala/coding/Fernando/movies/NewRelease.java b/src/main/java/org/fundacionjala/coding/Fernando/movies/NewRelease.java
new file mode 100644
index 0000000..18b9c31
--- /dev/null
+++ b/src/main/java/org/fundacionjala/coding/Fernando/movies/NewRelease.java
@@ -0,0 +1,34 @@
+package org.fundacionjala.coding.Fernando.movies;
+
+/**
+ * Created by Administrator on 3/21/2017.
+ */
+public class NewRelease extends Movie {
+
+    private static final int LIMITNEWCHILD = 3;
+
+    /**
+     * @param title param.
+     */
+    public NewRelease(final String title) {
+        super(title);
+    }
+
+    /**
+     * @param daysRented param.
+     * @return double value.
+     */
+    @Override
+    public double calculateAmount(final int daysRented) {
+        return daysRented * LIMITNEWCHILD;
+    }
+
+    /**
+     * @param daysRented param.
+     * @return Children value.
+     */
+    @Override
+    public int calculateFrequentRenterPoints(final int daysRented) {
+        return daysRented > 1 ? 2 : 1;
+    }
+}
diff --git a/src/main/java/org/fundacionjala/coding/Fernando/movies/Regular.java b/src/main/java/org/fundacionjala/coding/Fernando/movies/Regular.java
new file mode 100644
index 0000000..8ecba2d
--- /dev/null
+++ b/src/main/java/org/fundacionjala/coding/Fernando/movies/Regular.java
@@ -0,0 +1,40 @@
+package org.fundacionjala.coding.Fernando.movies;
+
+/**
+ * Created by Administrator on 3/21/2017.
+ */
+public class Regular extends Movie {
+
+    private static final double PRICE = 1.5;
+
+    private static final int LIMITREGULAR = 2;
+
+    /**
+     * @param title param.
+     */
+    public Regular(final String title) {
+        super(title);
+    }
+
+    /**
+     * @param daysRented param.
+     * @return double value.
+     */
+    @Override
+    public double calculateAmount(final int daysRented) {
+        double amount = LIMITREGULAR;
+        if (daysRented > LIMITREGULAR) {
+            amount += (daysRented - LIMITREGULAR) * PRICE;
+        }
+        return amount;
+    }
+
+    /**
+     * @param daysRented param.
+     * @return int value.
+     */
+    @Override
+    public int calculateFrequentRenterPoints(final int daysRented) {
+        return 1;
+    }
+}
diff --git a/src/main/java/org/fundacionjala/coding/Fernando/movies/Rental.java b/src/main/java/org/fundacionjala/coding/Fernando/movies/Rental.java
new file mode 100644
index 0000000..6cecf7d
--- /dev/null
+++ b/src/main/java/org/fundacionjala/coding/Fernando/movies/Rental.java
@@ -0,0 +1,47 @@
+package org.fundacionjala.coding.Fernando.movies;
+
+/**
+ * Created by Fernando.
+ */
+class Rental {
+    private Movie movie;
+    private int daysRented;
+
+    /**
+     * @param movie      Movie.
+     * @param daysRented DaysRented.
+     */
+    Rental(final Movie movie, final int daysRented) {
+        this.movie = movie;
+        this.daysRented = daysRented;
+    }
+
+    /**
+     * @return the daysRented.
+     */
+    public int getDaysRented() {
+        return daysRented;
+    }
+
+    /**
+     * @return movies object.
+     */
+    public Movie getMovie() {
+        return this.movie;
+    }
+
+    /**
+     * @return price object.
+     */
+    public double calculateAmount() {
+        return movie.calculateAmount(daysRented);
+    }
+
+    /**
+     * @return calculateFrequentRenterPoint int.
+     */
+    public int calculateFrequentRenterPoint() {
+        return movie.calculateFrequentRenterPoints(daysRented);
+    }
+}
+
diff --git a/src/main/java/org/fundacionjala/coding/Fernando/multiples/Multiples.java b/src/main/java/org/fundacionjala/coding/Fernando/multiples/Multiples.java
new file mode 100644
index 0000000..ebe2b9e
--- /dev/null
+++ b/src/main/java/org/fundacionjala/coding/Fernando/multiples/Multiples.java
@@ -0,0 +1,31 @@
+package org.fundacionjala.coding.Fernando.multiples;
+
+/**
+ * Created by PC on 24/06/2017.
+ */
+public  final class Multiples {
+
+    public static final int FIVE = 5;
+    private static final int THREE = 3;
+
+    /**
+     * Constructor.
+     */
+    private Multiples() {
+    }
+
+    /**
+     * @param num parameter.
+     * @return int value multiples of 3 and 5.
+     */
+
+    public static int solution(final int num) {
+        int res = 0;
+        for (int i = 0; i < num; i++) {
+            if (i % THREE == 0 || i % FIVE == 0) {
+                res += i;
+            }
+        }
+        return res;
+    }
+}
diff --git a/src/test/java/org/fundacionjala/coding/Fernando/StringInv/StringInvTest.java b/src/test/java/org/fundacionjala/coding/Fernando/StringInv/StringInvTest.java
new file mode 100644
index 0000000..bc01c51
--- /dev/null
+++ b/src/test/java/org/fundacionjala/coding/Fernando/StringInv/StringInvTest.java
@@ -0,0 +1,82 @@
+package org.fundacionjala.coding.Fernando.StringInv;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Modifier;
+
+import static org.junit.Assert.assertEquals;
+
+/**
+ * The test class StringInvTest.
+ *
+ * @author (your name)
+ * @version (a version number or a date)
+ */
+public class StringInvTest {
+
+    /**
+     * Test Constructor.
+     * @throws Exception if the constructor is not private.
+     */
+    @Test
+    public void testStringInv() throws Exception {
+        Constructor evaporatorConstructor = StringInv.class.getDeclaredConstructor();
+        Assert.assertTrue(Modifier.isPrivate(evaporatorConstructor.getModifiers()));
+        evaporatorConstructor.setAccessible(true);
+        evaporatorConstructor.newInstance();
+    }
+
+
+    /**
+     * Test when sentence is empty.
+     */
+    @Test
+    public void testWhenSentenceIsEmpty() {
+
+        // given:
+        final String sentence = "";
+
+        // when:
+        final String actualResult = StringInv.stringInv(sentence);
+
+        // then:
+        final String expectedResult = "";
+        assertEquals(expectedResult, actualResult);
+    }
+
+    /**
+     * Test when sentence has no words major to five.
+     */
+    @Test
+    public void testWhenSentenceHasNoWordsMajorToFive() {
+
+        // give:
+        final String sentence = "Hi guys how are you";
+
+        // when:
+        final String actualResult = StringInv.stringInv(sentence);
+
+        // then:
+        final String expectedResult = "Hi guys how are you";
+        assertEquals(expectedResult, actualResult);
+    }
+
+    /**
+     * Test when sentence has more than one word major that five.
+     */
+    @Test
+    public void testWhenSentenceHasMoreThanOneWordMajorThatFive() {
+
+        // give:
+        final String sentence = "Hey fellow warriors";
+
+        // when:
+        final String actualResult = StringInv.stringInv(sentence);
+
+        // then:
+        final String expectedResult = "Hey wollef sroirraw";
+        assertEquals(expectedResult, actualResult);
+    }
+}
diff --git a/src/test/java/org/fundacionjala/coding/Fernando/average/AverageTest.java b/src/test/java/org/fundacionjala/coding/Fernando/average/AverageTest.java
new file mode 100644
index 0000000..38acd3f
--- /dev/null
+++ b/src/test/java/org/fundacionjala/coding/Fernando/average/AverageTest.java
@@ -0,0 +1,135 @@
+package org.fundacionjala.coding.Fernando.average;
+
+import org.junit.Test;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Modifier;
+import java.util.Arrays;
+
+import static junit.framework.TestCase.assertTrue;
+import static org.junit.Assert.assertEquals;
+
+/**
+ * The test class AverageTest.
+ *
+ * @author (your name)
+ * @version (a version number or a date)
+ */
+public class AverageTest {
+
+    /**
+     * Test Constructor.
+     * @throws Exception if the constructor is not private.
+     */
+    @Test
+    public void testAverageConstructorIsPrivate() throws Exception {
+        Constructor constructor = Average.class.getDeclaredConstructor();
+        assertTrue(Modifier.isPrivate(constructor.getModifiers()));
+        constructor.setAccessible(true);
+        constructor.newInstance();
+    }
+
+    /**
+     * Test to get the prom when we have 5 elements.
+     */
+    @Test
+    public void testPromWhenHave5Elements() {
+
+        // given:
+        final int[] num = {2, 2, 2, 2, 2};
+
+        // when:
+        final double[] actualResult = Average.average(num);
+
+        // then:
+        final double[] expectedResult = {2.0, 2.0, 2.0, 2.0};
+        assertEquals(Arrays.toString(expectedResult), Arrays.toString(actualResult));
+    }
+
+    /**
+     * Test to get the prom when we have differents elements.
+     */
+    @Test
+    public void testPromWhenHaveDifferentData() {
+
+        // given:
+
+        final int[] num = {1, 3, 5, 1, -10};
+
+        // when:
+        final double[] actualResult = Average.average(num);
+
+        // then:
+        final double[] expectedResult = {2.0, 4.0, 3.0, -4.5};
+        assertEquals(Arrays.toString(expectedResult), Arrays.toString(actualResult));
+    }
+
+    /**
+     * Test to get the prom when we have the same elements.
+     */
+    @Test
+    public void testPromWhenHaveTheSameData() {
+
+        // given:
+        final int[] num = {2, -2, 2, -2, 2};
+
+        // when:
+        final double[] actualResult = Average.average(num);
+
+        // then:
+        final double[] expectedResult = {0.0, 0.0, 0.0, 0.0};
+        assertEquals(Arrays.toString(expectedResult), Arrays.toString(actualResult));
+    }
+
+    /**
+     * Test to get the prom when the array is null.
+     */
+    @Test
+    public void testPromWhenTheArrayIsNull() {
+
+        // given:
+        final int[] num = null;
+
+        // when:
+        final double[] actualResult = Average.average(num);
+
+        // then:
+        final double[] expectedResult = {};
+        assertEquals(Arrays.toString(expectedResult), Arrays.toString(actualResult));
+    }
+
+    /**
+     * Test to get the prom when we have the array empty.
+     */
+    @Test
+    public void testPromWhenTheArrayIsEmpty() {
+
+        // give:
+        final int[] num = {};
+
+        // when:
+        final double[] actualResult = Average.average(num);
+
+        // then:
+        final double[] expectedResult = {};
+
+        assertEquals(Arrays.toString(expectedResult), Arrays.toString(actualResult));
+    }
+
+    /**
+     * Test to get the prom when we have one element.
+     */
+    @Test
+    public void testPromWhenTheArrayHasOneElement() {
+
+        // given:
+        final int[] num = {2};
+
+        // when:
+        final double[] actualResult = Average.average(num);
+
+        // then:
+        final double[] expectedResult = {};
+        assertEquals(Arrays.toString(expectedResult), Arrays.toString(actualResult));
+    }
+}
diff --git a/src/test/java/org/fundacionjala/coding/Fernando/bankOCR/BankOCRTest.java b/src/test/java/org/fundacionjala/coding/Fernando/bankOCR/BankOCRTest.java
new file mode 100644
index 0000000..b37181e
--- /dev/null
+++ b/src/test/java/org/fundacionjala/coding/Fernando/bankOCR/BankOCRTest.java
@@ -0,0 +1,165 @@
+package org.fundacionjala.coding.Fernando.bankOCR;
+
+import org.junit.Test;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Modifier;
+
+import static junit.framework.TestCase.assertTrue;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+
+/**
+ * Created by PC on 24/06/2017.
+ */
+public class BankOCRTest {
+
+    /**
+     * Test Constructor.
+     * @throws Exception if the constructor is not private.
+     */
+    @Test
+    public void testBankOCRConstructorIsPrivate() throws Exception {
+        Constructor constructor = BankOCR.class.getDeclaredConstructor();
+        assertTrue(Modifier.isPrivate(constructor.getModifiers()));
+        constructor.setAccessible(true);
+        constructor.newInstance();
+    }
+
+    /**
+     * Test the number.
+     */
+    @Test
+    public void testToGetNumber() {
+        // given:
+        String[] data = {
+                " _ "
+                        + "| |"
+                        + "|_|",
+
+                "   "
+                        + "  |"
+                        + "  |",
+
+                " _ "
+                        + " _|"
+                        + "|_ ",
+
+                "__ "
+                        + " _|"
+                        + "__|",
+
+                "   "
+                        + "|_|"
+                        + "  |",
+
+                " _ "
+                        + "|_ "
+                        + " _|",
+
+                " _ "
+                        + "|_ "
+                        + "|_|",
+
+                "__ "
+                        + "  |"
+                        + "  |",
+
+                " _ "
+                        + "|_|"
+                        + "|_|",
+
+                " _ "
+                        + "|_|"
+                        + " _|"
+        };
+
+        // when:
+        final String actualResult = BankOCR.parseDigit(data);
+
+        // then:
+        final String expectedResult = "0123456789";
+        assertEquals(expectedResult, actualResult);
+    }
+
+    /**
+     * Test when values has different o wrong number.
+     */
+    @Test
+    public void testWithWrongNumbers() {
+        // given:
+        String[] data = {
+                " _ "
+                        + "| |"
+                        + "|_|",
+
+                " _ "
+                        + "|_|"
+                        + " _|",
+
+                "Wrong number",
+                "",
+                " _ "
+                        + "|_ "
+                        + " _|"
+        };
+
+        // when:
+        final String actualResult = BankOCR.parseDigit(data);
+
+        // then:
+        final String expectedResult = "09??5";
+        assertEquals(expectedResult, actualResult);
+    }
+
+    /**
+     * Test with incorrect datas.
+     */
+    @Test
+    public void testWithIncorrectDatas() {
+        // given:
+        String[] data = {
+                "   "
+                        + "|_|"
+                        + "  |",
+
+                " _ "
+                        + "|_ "
+                        + " _|",
+
+                " _ "
+                        + "|_ "
+                        + "|_|",
+
+                "__ "
+                        + "  |"
+                        + "  |",
+
+        };
+       final String value = BankOCR.parseDigit(data);
+
+        // when:
+        final boolean actualResult = BankOCR.validAccountNumbers(value);
+
+        // then:
+        assertFalse(actualResult);
+    }
+
+    /**
+     * Test when we get the result "ERR".
+     */
+    @Test
+    public void testWithWrongDatas() {
+        // given:
+        String data = "021453789";
+
+        // when:
+        String actualResult = BankOCR.accountStatus(data);
+
+        // then:
+        String expectedResult = "ERR";
+        assertEquals(expectedResult, actualResult);
+    }
+
+}
+
diff --git a/src/test/java/org/fundacionjala/coding/Fernando/checkSum/CheckSumTest.java b/src/test/java/org/fundacionjala/coding/Fernando/checkSum/CheckSumTest.java
new file mode 100644
index 0000000..7666ce2
--- /dev/null
+++ b/src/test/java/org/fundacionjala/coding/Fernando/checkSum/CheckSumTest.java
@@ -0,0 +1,75 @@
+package org.fundacionjala.coding.Fernando.checkSum;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Modifier;
+
+import org.junit.Test;
+
+import static junit.framework.TestCase.assertTrue;
+import static org.junit.Assert.assertFalse;
+
+/**
+ * The test class CheckSumTest.
+ *
+ * @author (your name)
+ * @version (a version number or a date)
+ */
+public class CheckSumTest {
+
+    /**
+     * Test Constructor.
+     * @throws Exception if the constructor is not private.
+     */
+    @Test
+    public void testCheckSumConstructorIsPrivate() throws Exception {
+        Constructor constructor = CheckSum.class.getDeclaredConstructor();
+        assertTrue(Modifier.isPrivate(constructor.getModifiers()));
+        constructor.setAccessible(true);
+        constructor.newInstance();
+    }
+
+    /**
+     * Test when sentence is empty.
+     */
+    @Test
+    public void testWhenSentenceISEmpty() {
+
+        // given:
+        final String sentence = "4003301018398";
+
+        // when:
+        final boolean actualResult = CheckSum.canValues(sentence);
+
+        assertTrue(actualResult);
+    }
+
+    /**
+     * Test when sentence has more than one word major that five.
+     */
+    @Test
+    public void testWhenSentenceHasMoreThanOneWordMajorThatFive() {
+
+        // given:
+        final String sentence = "1234567890200";
+
+        // when:
+        final boolean actualResult = CheckSum.canValues(sentence);
+
+        assertFalse(actualResult);
+    }
+
+    /**
+     * Test when sentence has more than one word major that five.
+     */
+    @Test
+    public void testWhenSentenceHasLessThanThrerteenWords() {
+
+        // given:
+        final String sentence = "123456789";
+
+        // when:
+        final boolean actualResult = CheckSum.canValues(sentence);
+
+        assertFalse(actualResult);
+    }
+}
diff --git a/src/test/java/org/fundacionjala/coding/Fernando/evaporator/EvaporatorTest.java b/src/test/java/org/fundacionjala/coding/Fernando/evaporator/EvaporatorTest.java
new file mode 100644
index 0000000..e36b816
--- /dev/null
+++ b/src/test/java/org/fundacionjala/coding/Fernando/evaporator/EvaporatorTest.java
@@ -0,0 +1,93 @@
+package org.fundacionjala.coding.Fernando.evaporator;
+
+import org.junit.Test;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Modifier;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+/**
+ * Created by PC on 28/06/2017.
+ */
+public class EvaporatorTest {
+
+    /**
+     * Test one.
+     */
+    @Test
+    public void testEvaporatorOne() {
+        assertEquals(22, Evaporator.evaporator(10, 10, 10));
+    }
+
+    /**
+     * Test two.
+     */
+    @Test
+    public void testEvaporatorTwo() {
+        assertEquals(29, Evaporator.evaporator(10, 10, 5));
+    }
+
+    /**
+     * Test three.
+     */
+    @Test
+    public void testEvaporatorThree() {
+        assertEquals(59, Evaporator.evaporator(100, 5, 5));
+    }
+
+    /**
+     * Test four.
+     */
+    @Test
+    public void testEvaporatorFour() {
+        assertEquals(37, Evaporator.evaporator(50, 12, 1));
+    }
+
+    /**
+     * Test five.
+     */
+    @Test
+    public void testEvaporatorFive() {
+        assertEquals(31, Evaporator.evaporator(47.5, 8, 8));
+    }
+
+    /**
+     * Test six.
+     */
+    @Test
+    public void testEvaporatorSix() {
+        assertEquals(459, Evaporator.evaporator(100, 1, 1));
+    }
+
+    /**
+     * Test seven.
+     */
+    @Test
+    public void testEvaporatorSeven() {
+        assertEquals(459, Evaporator.evaporator(10, 1, 1));
+    }
+
+    /**
+     * Test eight.
+     */
+    @Test
+    public void testEvaporatorEight() {
+        assertEquals(299, Evaporator.evaporator(100, 1, 5));
+    }
+
+    /**
+     * Test constructor.
+     * @throws Exception exception.
+     */
+    @Test
+    public void testConstructorIsPrivate() throws Exception {
+        Constructor constructor = Evaporator.class.getDeclaredConstructor();
+        assertTrue(Modifier.isPrivate(constructor.getModifiers()));
+        constructor.setAccessible(true);
+        constructor.newInstance();
+    }
+}
+
+
diff --git a/src/test/java/org/fundacionjala/coding/Fernando/haghestandlowest/HighAndLowTest.java b/src/test/java/org/fundacionjala/coding/Fernando/haghestandlowest/HighAndLowTest.java
new file mode 100644
index 0000000..92902b5
--- /dev/null
+++ b/src/test/java/org/fundacionjala/coding/Fernando/haghestandlowest/HighAndLowTest.java
@@ -0,0 +1,93 @@
+package org.fundacionjala.coding.Fernando.haghestandlowest;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Modifier;
+
+import org.junit.Test;
+
+import static junit.framework.TestCase.assertTrue;
+import static org.hamcrest.core.Is.is;
+import static org.junit.Assert.assertThat;
+
+/**
+ * Created by PC on 25/06/2017.
+ */
+public class HighAndLowTest {
+
+    /**
+     * Test Constructor.
+     * @throws Exception if the constructor is not private.
+     */
+    @Test
+    public void testHighAndLowConstructorIsPrivate() throws Exception {
+        Constructor constructor = HighAndLow.class.getDeclaredConstructor();
+        assertTrue(Modifier.isPrivate(constructor.getModifiers()));
+        constructor.setAccessible(true);
+        constructor.newInstance();
+    }
+
+    /**
+     * Some Test.
+     */
+    @Test
+    public void someTest() {
+        assertThat(HighAndLow.highAndLowest("4 5 29 54 4 0 -214 542 -64 1 -3 6 -6"), is("542 -214"));
+    }
+
+    /**
+     * PlusMinusTest.
+     */
+    @Test
+    public void plusMinusTest() {
+        assertThat(HighAndLow.highAndLowest("1 -1"), is("1 -1"));
+    }
+
+    /**
+     * Plus plus test.
+     */
+    @Test
+    public void plusPlusTest() {
+        assertThat(HighAndLow.highAndLowest("1 1"), is("1 1"));
+    }
+
+    /**
+     * Minus minus test.
+     */
+    @Test
+    public void minusMinusTest() {
+        assertThat(HighAndLow.highAndLowest("-1 -1"), is("-1 -1"));
+    }
+
+    /**
+     * Plus minus zero test.
+     */
+    @Test
+    public void plusMinusZeroTest() {
+        assertThat(HighAndLow.highAndLowest("1 -1 0"), is("1 -1"));
+    }
+
+    /**
+     * Plus zero test.
+     */
+    @Test
+    public void plusPlusZeroTest() {
+        assertThat(HighAndLow.highAndLowest("1 1 0"), is("1 0"));
+    }
+
+    /**
+     * Minus zero test.
+     */
+    @Test
+    public void minusMinusZeroTest() {
+        assertThat(HighAndLow.highAndLowest("-1 -1 0"), is("0 -1"));
+    }
+
+    /**
+     * Single test.
+     */
+    @Test
+    public void singleTest() {
+        assertThat(HighAndLow.highAndLowest("42"), is("42 42"));
+    }
+
+}
diff --git a/src/test/java/org/fundacionjala/coding/Fernando/movies/ChildrenTest.java b/src/test/java/org/fundacionjala/coding/Fernando/movies/ChildrenTest.java
new file mode 100644
index 0000000..cea2c6f
--- /dev/null
+++ b/src/test/java/org/fundacionjala/coding/Fernando/movies/ChildrenTest.java
@@ -0,0 +1,75 @@
+package org.fundacionjala.coding.Fernando.movies;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+/**
+ * Created by PC on 24/06/2017.
+ */
+public class ChildrenTest {
+
+    private Movie movie;
+
+    /**
+     * Creating Children instance.
+     */
+    @Before
+    public void createCustomer() {
+        movie = new Children("Toy Story");
+    }
+
+    /**
+     * Test to verify the amount rent less than three days.
+     */
+    @Test
+    public void testCalculateAmountWhenTheRentedDaysIsLessThanThree() {
+
+        // when:
+        final double actualResult = movie.calculateAmount(2);
+
+        // then
+        final double expectedResult = 1.5;
+        assertEquals(expectedResult, actualResult, 0);
+    }
+
+    /**
+     * Test to verify the amount rent more than three days.
+     */
+    @Test
+    public void testToCalculateRentMovieMoreThanThreeDays() {
+
+        // when:
+        final double actualResult = movie.calculateAmount(10);
+
+        // then:
+        final double expectedResult = 12.0;
+        assertEquals(expectedResult, actualResult, 0);
+    }
+
+    /**
+     * Test to verify the frequent renter for different days.
+     */
+    @Test
+    public void testToCalculateTheFrequentRentDifferentDays() {
+
+        // when:
+        final int actualResult = movie.calculateFrequentRenterPoints(1);
+
+        // then:
+        final int expectedResult = 1;
+        assertEquals(expectedResult, actualResult);
+
+        // given:
+
+        // when:
+        final int actualResultTwo = movie.calculateFrequentRenterPoints(3);
+
+        // then:
+        final int expectedResultTwo = 1;
+        assertEquals(expectedResultTwo, actualResultTwo);
+
+    }
+
+}
diff --git a/src/test/java/org/fundacionjala/coding/Fernando/movies/CustomerTest.java b/src/test/java/org/fundacionjala/coding/Fernando/movies/CustomerTest.java
new file mode 100644
index 0000000..8ec3d98
--- /dev/null
+++ b/src/test/java/org/fundacionjala/coding/Fernando/movies/CustomerTest.java
@@ -0,0 +1,88 @@
+package org.fundacionjala.coding.Fernando.movies;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+/**
+ * Created by PC on 25/06/2017.
+ */
+public class CustomerTest {
+
+    private static final int RENT_DAY = 1;
+    private static final double PRICE_MINOR = 1.5;
+
+    private Customer customer;
+
+    /**
+     * Create customer.
+     */
+    @Before
+    public void createCustomer() {
+        customer = new Customer("Fernando");
+    }
+
+    /**
+     * testSpinWordsWhenCustomeIsTest.
+     */
+    @Test
+    public void testSpinWordsWhenCustomeIsTest() {
+
+        // given:
+        customer.addRental(new Rental(new Children("The Revenant"), 2));
+
+        // when:
+        final String actualResult = customer.getName();
+
+        // then:
+        final String expectedResult = "Fernando";
+        assertEquals(expectedResult, actualResult);
+    }
+
+    /**
+     * test Movie When Day Rented Is less For Children.
+     */
+    @Test
+    public void testMovieWhenDayRentedISLessForChildren() {
+
+        // given:
+        customer.addRental(new Rental(new Children("The Revenant"), RENT_DAY));
+
+        // when:
+        final double actualResult = customer.calculateTotalAmount();
+
+        // then:
+
+        assertEquals(PRICE_MINOR, actualResult, 0);
+    }
+
+    /**
+     * Test customer class.
+     */
+    @Test
+    public void testCustomer() {
+        final double rentalAmountONe = 6.0;
+        final double rentalAmountTwo = 2.0;
+        final double rentalTotalAmount = 8.0;
+        final int earnedFrequentRenter = 3;
+
+        // given
+        customer.addRental(new Rental(new NewRelease("Moana"), 2));
+        customer.addRental(new Rental(new Regular("Titanic"), 1));
+
+        // when
+        final String actualResult = customer.generateDetail();
+
+        // then
+        StringBuilder expectedResult = new StringBuilder();
+        expectedResult.append(String.format("Rental Record for %s %n", "Fernando"));
+        expectedResult.append(String.format("\t %s \t%f %n", "Moana", rentalAmountONe));
+        expectedResult.append(String.format("\t %s \t%f %n", "Titanic", rentalAmountTwo));
+
+        expectedResult.append(String.format("Amount owed is %f %n", rentalTotalAmount));
+        expectedResult.append(String.format("You earned %d frequent renter points", earnedFrequentRenter));
+
+        assertEquals(expectedResult.toString(), actualResult);
+    }
+}
diff --git a/src/test/java/org/fundacionjala/coding/Fernando/movies/NewReleaseTest.java b/src/test/java/org/fundacionjala/coding/Fernando/movies/NewReleaseTest.java
new file mode 100644
index 0000000..bcfd469
--- /dev/null
+++ b/src/test/java/org/fundacionjala/coding/Fernando/movies/NewReleaseTest.java
@@ -0,0 +1,75 @@
+package org.fundacionjala.coding.Fernando.movies;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+/**
+ * Created by PC on 25/06/2017.
+ */
+public class NewReleaseTest {
+
+    private Movie movie;
+
+    /**
+     * Creating new release instance.
+     */
+    @Before
+    public void createNewRelease() {
+        movie = new NewRelease("Toy Story");
+    }
+
+    /**
+     * Test to verify the amount rent less than three days.
+     */
+    @Test
+    public void testCalculateAmountWhenTheRentedDaysIsLessThanThree() {
+
+        // when:
+        final double actualResult = movie.calculateAmount(2);
+
+        // then
+        final double expectedResult = 1.5;
+        assertEquals(0, expectedResult, actualResult);
+    }
+
+    /**
+     * Test to verify the amount rent more than three days.
+     */
+    @Test
+    public void testToCalculateRentMovieMoreThanThreeDays() {
+
+        // when:
+        final double actualResult = movie.calculateAmount(10);
+
+        // then:
+        final double expectedResult = 10.5;
+        assertEquals(0, expectedResult, actualResult);
+    }
+
+    /**
+     * Test to verify the frequent renter for different days.
+     */
+    @Test
+    public void testToCalculateTheFrequentRentDifferentDays() {
+
+        // when:
+        final int actualResult = movie.calculateFrequentRenterPoints(1);
+
+        // then:
+        final int expectedResult = 1;
+        assertEquals(expectedResult, actualResult);
+
+        // given:
+
+        // when:
+        final int actualResultTwo = movie.calculateFrequentRenterPoints(3);
+
+        // then:
+        final int expectedResultTwo = 2;
+        assertEquals(expectedResultTwo, actualResultTwo);
+
+    }
+
+}
diff --git a/src/test/java/org/fundacionjala/coding/Fernando/movies/RegularTest.java b/src/test/java/org/fundacionjala/coding/Fernando/movies/RegularTest.java
new file mode 100644
index 0000000..2243368
--- /dev/null
+++ b/src/test/java/org/fundacionjala/coding/Fernando/movies/RegularTest.java
@@ -0,0 +1,74 @@
+package org.fundacionjala.coding.Fernando.movies;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+/**
+ * Created by PC on 25/06/2017.
+ */
+public class RegularTest {
+
+    private Movie movie;
+
+    /**
+     * Creating Regular instance.
+     */
+    @Before
+    public void createRegular() {
+        movie = new Regular("Toy Story");
+    }
+
+    /**
+     * Test to verify the amount rent less than three days.
+     */
+    @Test
+    public void testCalculateAmountWhenTheRentedDaysIsLessThanThree() {
+
+        // when:
+        final double actualResult = movie.calculateAmount(2);
+
+        // then
+        final double expectedResult = 1.5;
+        assertEquals(0, expectedResult, actualResult);
+    }
+
+    /**
+     * Test to verify the amount rent more than three days.
+     */
+    @Test
+    public void testToCalculateRentMovieMoreThanThreeDays() {
+
+        // when:
+        final double actualResult = movie.calculateAmount(10);
+
+        // then:
+        final double expectedResult = 10.5;
+        assertEquals(0, expectedResult, actualResult);
+    }
+
+    /**
+     * Test to verify the frequent renter for different days.
+     */
+    @Test
+    public void testToCalculateTheFrequentRentDifferentDays() {
+
+        // when:
+        final int actualResult = movie.calculateFrequentRenterPoints(1);
+
+        // then:
+        final int expectedResult = 1;
+        assertEquals(expectedResult, actualResult);
+
+        // given:
+
+        // when:
+        final int actualResultTwo = movie.calculateFrequentRenterPoints(3);
+
+        // then:
+        final int expectedResultTwo = 1;
+        assertEquals(expectedResultTwo, actualResultTwo);
+
+    }
+}
diff --git a/src/test/java/org/fundacionjala/coding/Fernando/movies/RentalTest.java b/src/test/java/org/fundacionjala/coding/Fernando/movies/RentalTest.java
new file mode 100644
index 0000000..3727bd0
--- /dev/null
+++ b/src/test/java/org/fundacionjala/coding/Fernando/movies/RentalTest.java
@@ -0,0 +1,55 @@
+package org.fundacionjala.coding.Fernando.movies;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+/**
+ * Created by PC on 03/07/2017.
+ */
+public class RentalTest {
+
+    private static final int DAYS_RENTED = 2;
+
+    private Movie movie;
+    private Rental rental;
+
+    /**
+     * Creating Regular and Rental instance.
+     */
+    @Before
+    public void createRegularAndRental() {
+        movie = new Regular("Star Wars");
+        rental = new Rental(movie, DAYS_RENTED);
+    }
+
+    /**
+     * Test get title.
+     */
+    @Test
+    public void testGetTitle() {
+
+        // when:
+        final String actualResult = rental.getMovie().getTitle();
+
+        // then:
+        final String expectedResult = "Star Wars";
+        assertEquals(expectedResult, actualResult);
+    }
+
+    /**
+     * Test days rented.
+     */
+
+    @Test
+    public void testDaysRented() {
+
+        // when:
+        final int actualResult = rental.getDaysRented();
+
+        // then:
+        final int expectedResult = DAYS_RENTED;
+        assertEquals(expectedResult, actualResult);
+    }
+}
diff --git a/src/test/java/org/fundacionjala/coding/Fernando/multiples/MultiplesTest.java b/src/test/java/org/fundacionjala/coding/Fernando/multiples/MultiplesTest.java
new file mode 100644
index 0000000..4ec7a96
--- /dev/null
+++ b/src/test/java/org/fundacionjala/coding/Fernando/multiples/MultiplesTest.java
@@ -0,0 +1,81 @@
+package org.fundacionjala.coding.Fernando.multiples;
+
+import org.junit.Test;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Modifier;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+/**
+ * Created by PC on 03/07/2017.
+ */
+public class MultiplesTest {
+
+    /**
+     * Unit Test about multiples of 3 and 5.
+     *
+     * Test one.
+     */
+    @Test
+    public void testOne() {
+        final int expectedResult = 23;
+
+        final int expectedVariable = 10;
+
+        assertEquals(expectedResult, Multiples.solution(expectedVariable));
+    }
+
+    /**
+     * Unit Test about multiples of 3 and 5.
+     *
+     * Test two.
+     */
+    @Test
+    public void testTwo() {
+        final int expectedResult = 78;
+
+        final int expectedVariable = 20;
+
+        assertEquals(expectedResult, Multiples.solution(expectedVariable));
+    }
+
+    /**
+     * Unit Test about multiples of 3 and 5.
+     *
+     * Test three.
+     */
+    @Test
+    public void testThree() {
+        final int expectedResult = 9168;
+
+        final int expectedVariable = 200;
+
+        assertEquals(expectedResult, Multiples.solution(expectedVariable));
+    }
+
+    /**
+     * Unit test if is zero.
+     */
+    @Test
+    public void testFour() {
+        final int expectedResult = 0;
+
+        final int expectedVariable = 0;
+
+        assertEquals(expectedResult, Multiples.solution(expectedVariable));
+    }
+
+    /**
+     * Test constructor.
+     * @throws Exception exception.
+     */
+    @Test
+    public void testConstructorIsPrivate() throws Exception {
+        Constructor constructor = Multiples.class.getDeclaredConstructor();
+        assertTrue(Modifier.isPrivate(constructor.getModifiers()));
+        constructor.setAccessible(true);
+        constructor.newInstance();
+    }
+}