First Java program! Learnign with Vincent.

ValidateExercise1Maven_.idea_compiler.xml

<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
  <component name="CompilerConfiguration">
    <resourceExtensions />
    <wildcardResourcePatterns>
      <entry name="!?*.java" />
      <entry name="!?*.form" />
      <entry name="!?*.class" />
      <entry name="!?*.groovy" />
      <entry name="!?*.scala" />
      <entry name="!?*.flex" />
      <entry name="!?*.kt" />
      <entry name="!?*.clj" />
      <entry name="!?*.aj" />
    </wildcardResourcePatterns>
    <annotationProcessing>
      <profile default="true" name="Default" enabled="false">
        <processorPath useClasspath="true" />
      </profile>
      <profile default="false" name="Maven default annotation processors profile" enabled="true">
        <sourceOutputDir name="target/generated-sources/annotations" />
        <sourceTestOutputDir name="target/generated-test-sources/test-annotations" />
        <outputRelativeToContentRoot value="true" />
        <processorPath useClasspath="true" />
        <module name="ValidateExercise1Maven" />
      </profile>
    </annotationProcessing>
    <bytecodeTargetLevel>
      <module name="ValidateExercise1Maven" target="1.8" />
    </bytecodeTargetLevel>
  </component>
</project>

ValidateExercise1Maven_.idea_copyright_profiles_settings.xml

<component name="CopyrightManager">
  <settings default="" />
</component>

ValidateExercise1Maven_.idea_libraries_Maven__junit_junit_4_12.xml

<component name="libraryTable">
  <library name="Maven: junit:junit:4.12">
    <CLASSES>
      <root url="jar://$MAVEN_REPOSITORY$/junit/junit/4.12/junit-4.12.jar!/" />
    </CLASSES>
    <JAVADOC>
      <root url="jar://$MAVEN_REPOSITORY$/junit/junit/4.12/junit-4.12-javadoc.jar!/" />
    </JAVADOC>
    <SOURCES>
      <root url="jar://$MAVEN_REPOSITORY$/junit/junit/4.12/junit-4.12-sources.jar!/" />
    </SOURCES>
  </library>
</component>

ValidateExercise1Maven_.idea_libraries_Maven__org_hamcrest_hamcrest_core_1_3.xml

<component name="libraryTable">
  <library name="Maven: org.hamcrest:hamcrest-core:1.3">
    <CLASSES>
      <root url="jar://$MAVEN_REPOSITORY$/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar!/" />
    </CLASSES>
    <JAVADOC>
      <root url="jar://$MAVEN_REPOSITORY$/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3-javadoc.jar!/" />
    </JAVADOC>
    <SOURCES>
      <root url="jar://$MAVEN_REPOSITORY$/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3-sources.jar!/" />
    </SOURCES>
  </library>
</component>

ValidateExercise1Maven_.idea_misc.xml

<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
  <component name="EntryPointsManager">
    <entry_points version="2.0" />
  </component>
  <component name="MavenProjectsManager">
    <option name="originalFiles">
      <list>
        <option value="$PROJECT_DIR$/pom.xml" />
      </list>
    </option>
  </component>
  <component name="ProjectLevelVcsManager" settingsEditedManually="false">
    <OptionsSetting value="true" id="Add" />
    <OptionsSetting value="true" id="Remove" />
    <OptionsSetting value="true" id="Checkout" />
    <OptionsSetting value="true" id="Update" />
    <OptionsSetting value="true" id="Status" />
    <OptionsSetting value="true" id="Edit" />
    <ConfirmationsSetting value="0" id="Add" />
    <ConfirmationsSetting value="0" id="Remove" />
  </component>
  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" assert-keyword="true" jdk-15="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
    <output url="file://$PROJECT_DIR$/out" />
  </component>
</project>

ValidateExercise1Maven_.idea_modules.xml

<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
  <component name="ProjectModuleManager">
    <modules>
      <module fileurl="file://$PROJECT_DIR$/ValidateExercise1Maven.iml" filepath="$PROJECT_DIR$/ValidateExercise1Maven.iml" />
    </modules>
  </component>
</project>

ValidateExercise1Maven_.idea_uiDesigner.xml

<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
  <component name="Palette2">
    <group name="Swing">
      <item class="com.intellij.uiDesigner.HSpacer" tooltip-text="Horizontal Spacer" icon="/com/intellij/uiDesigner/icons/hspacer.png" removable="false" auto-create-binding="false" can-attach-label="false">
        <default-constraints vsize-policy="1" hsize-policy="6" anchor="0" fill="1" />
      </item>
      <item class="com.intellij.uiDesigner.VSpacer" tooltip-text="Vertical Spacer" icon="/com/intellij/uiDesigner/icons/vspacer.png" removable="false" auto-create-binding="false" can-attach-label="false">
        <default-constraints vsize-policy="6" hsize-policy="1" anchor="0" fill="2" />
      </item>
      <item class="javax.swing.JPanel" icon="/com/intellij/uiDesigner/icons/panel.png" removable="false" auto-create-binding="false" can-attach-label="false">
        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3" />
      </item>
      <item class="javax.swing.JScrollPane" icon="/com/intellij/uiDesigner/icons/scrollPane.png" removable="false" auto-create-binding="false" can-attach-label="true">
        <default-constraints vsize-policy="7" hsize-policy="7" anchor="0" fill="3" />
      </item>
      <item class="javax.swing.JButton" icon="/com/intellij/uiDesigner/icons/button.png" removable="false" auto-create-binding="true" can-attach-label="false">
        <default-constraints vsize-policy="0" hsize-policy="3" anchor="0" fill="1" />
        <initial-values>
          <property name="text" value="Button" />
        </initial-values>
      </item>
      <item class="javax.swing.JRadioButton" icon="/com/intellij/uiDesigner/icons/radioButton.png" removable="false" auto-create-binding="true" can-attach-label="false">
        <default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
        <initial-values>
          <property name="text" value="RadioButton" />
        </initial-values>
      </item>
      <item class="javax.swing.JCheckBox" icon="/com/intellij/uiDesigner/icons/checkBox.png" removable="false" auto-create-binding="true" can-attach-label="false">
        <default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
        <initial-values>
          <property name="text" value="CheckBox" />
        </initial-values>
      </item>
      <item class="javax.swing.JLabel" icon="/com/intellij/uiDesigner/icons/label.png" removable="false" auto-create-binding="false" can-attach-label="false">
        <default-constraints vsize-policy="0" hsize-policy="0" anchor="8" fill="0" />
        <initial-values>
          <property name="text" value="Label" />
        </initial-values>
      </item>
      <item class="javax.swing.JTextField" icon="/com/intellij/uiDesigner/icons/textField.png" removable="false" auto-create-binding="true" can-attach-label="true">
        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
          <preferred-size width="150" height="-1" />
        </default-constraints>
      </item>
      <item class="javax.swing.JPasswordField" icon="/com/intellij/uiDesigner/icons/passwordField.png" removable="false" auto-create-binding="true" can-attach-label="true">
        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
          <preferred-size width="150" height="-1" />
        </default-constraints>
      </item>
      <item class="javax.swing.JFormattedTextField" icon="/com/intellij/uiDesigner/icons/formattedTextField.png" removable="false" auto-create-binding="true" can-attach-label="true">
        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
          <preferred-size width="150" height="-1" />
        </default-constraints>
      </item>
      <item class="javax.swing.JTextArea" icon="/com/intellij/uiDesigner/icons/textArea.png" removable="false" auto-create-binding="true" can-attach-label="true">
        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
          <preferred-size width="150" height="50" />
        </default-constraints>
      </item>
      <item class="javax.swing.JTextPane" icon="/com/intellij/uiDesigner/icons/textPane.png" removable="false" auto-create-binding="true" can-attach-label="true">
        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
          <preferred-size width="150" height="50" />
        </default-constraints>
      </item>
      <item class="javax.swing.JEditorPane" icon="/com/intellij/uiDesigner/icons/editorPane.png" removable="false" auto-create-binding="true" can-attach-label="true">
        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
          <preferred-size width="150" height="50" />
        </default-constraints>
      </item>
      <item class="javax.swing.JComboBox" icon="/com/intellij/uiDesigner/icons/comboBox.png" removable="false" auto-create-binding="true" can-attach-label="true">
        <default-constraints vsize-policy="0" hsize-policy="2" anchor="8" fill="1" />
      </item>
      <item class="javax.swing.JTable" icon="/com/intellij/uiDesigner/icons/table.png" removable="false" auto-create-binding="true" can-attach-label="false">
        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
          <preferred-size width="150" height="50" />
        </default-constraints>
      </item>
      <item class="javax.swing.JList" icon="/com/intellij/uiDesigner/icons/list.png" removable="false" auto-create-binding="true" can-attach-label="false">
        <default-constraints vsize-policy="6" hsize-policy="2" anchor="0" fill="3">
          <preferred-size width="150" height="50" />
        </default-constraints>
      </item>
      <item class="javax.swing.JTree" icon="/com/intellij/uiDesigner/icons/tree.png" removable="false" auto-create-binding="true" can-attach-label="false">
        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
          <preferred-size width="150" height="50" />
        </default-constraints>
      </item>
      <item class="javax.swing.JTabbedPane" icon="/com/intellij/uiDesigner/icons/tabbedPane.png" removable="false" auto-create-binding="true" can-attach-label="false">
        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
          <preferred-size width="200" height="200" />
        </default-constraints>
      </item>
      <item class="javax.swing.JSplitPane" icon="/com/intellij/uiDesigner/icons/splitPane.png" removable="false" auto-create-binding="false" can-attach-label="false">
        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
          <preferred-size width="200" height="200" />
        </default-constraints>
      </item>
      <item class="javax.swing.JSpinner" icon="/com/intellij/uiDesigner/icons/spinner.png" removable="false" auto-create-binding="true" can-attach-label="true">
        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
      </item>
      <item class="javax.swing.JSlider" icon="/com/intellij/uiDesigner/icons/slider.png" removable="false" auto-create-binding="true" can-attach-label="false">
        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
      </item>
      <item class="javax.swing.JSeparator" icon="/com/intellij/uiDesigner/icons/separator.png" removable="false" auto-create-binding="false" can-attach-label="false">
        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3" />
      </item>
      <item class="javax.swing.JProgressBar" icon="/com/intellij/uiDesigner/icons/progressbar.png" removable="false" auto-create-binding="true" can-attach-label="false">
        <default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1" />
      </item>
      <item class="javax.swing.JToolBar" icon="/com/intellij/uiDesigner/icons/toolbar.png" removable="false" auto-create-binding="false" can-attach-label="false">
        <default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1">
          <preferred-size width="-1" height="20" />
        </default-constraints>
      </item>
      <item class="javax.swing.JToolBar$Separator" icon="/com/intellij/uiDesigner/icons/toolbarSeparator.png" removable="false" auto-create-binding="false" can-attach-label="false">
        <default-constraints vsize-policy="0" hsize-policy="0" anchor="0" fill="1" />
      </item>
      <item class="javax.swing.JScrollBar" icon="/com/intellij/uiDesigner/icons/scrollbar.png" removable="false" auto-create-binding="true" can-attach-label="false">
        <default-constraints vsize-policy="6" hsize-policy="0" anchor="0" fill="2" />
      </item>
    </group>
  </component>
</project>

ValidateExercise1Maven_pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.exemple</groupId>
    <artifactId>ValidateExercise</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.3</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>


</project>

ValidateExercise1Maven_src_main_java_tutorial_Main.java

package tutorial;

/**
 * Created by camille on 25/05/2016.
 */

public class Main {
    public static void main(String[] args){
        Welcomer welcomer = new WelcomerFactory().createWelcomer();
        welcomer.start();

    }
}






/*
Visibilitée de var d'instance, interfaces ou methodes:
-public
-private
-package private

final >> constant. Use for variables d'instances

Auto resolve error > Alt+Enter

alias > variable d'intances sont "intriqués"
pas le cas pour les autres variables
 */

// Code source de Angular >> regarder les test unitaires

ValidateExercise1Maven_src_main_java_tutorial_NameRequester.java

package tutorial;

/**
 * Created by camille on 08/06/2016.
 */
public interface NameRequester {
    void start();
}

ValidateExercise1Maven_src_main_java_tutorial_NameRequesterImpl.java

package tutorial;

import tutorial.validate.Validator;

/**
 * Created by camille on 08/06/2016.
 */
public class NameRequesterImpl implements NameRequester{
    private final Writer writer;
    private final Reader reader;
    private final Validator validator;


    public NameRequesterImpl(Writer writer, Reader reader, Validator validator){
        this.writer = writer;
        this.reader = reader;
        this.validator = validator;
    }

    @Override
    public void start(){
        writer.write("Please enter your name\n");
        String input = reader.readLine();
        while(!(validator.validate(input))){
            writer.write("Your name is incorrect. Try again!\n");
            input = reader.readLine();
        }
        writer.write("Name Correct!\n");
    }


}

ValidateExercise1Maven_src_main_java_tutorial_PasswordRequester.java

package tutorial;

/**
 * Created by camille on 12/06/2016.
 */
public interface PasswordRequester {
    void start();
}

ValidateExercise1Maven_src_main_java_tutorial_PasswordRequesterImpl.java

package tutorial;

import tutorial.validate.Validator;

/**
 * Created by camille on 12/06/2016.
 */
public class PasswordRequesterImpl implements PasswordRequester {
    private final Writer writer;
    private final Reader reader;
    private final Validator validator;

    public PasswordRequesterImpl(Writer writer, Reader reader, Validator validator) {
        this.writer = writer;
        this.reader = reader;
        this.validator = validator;
    }

    @Override
    public void start(){
        writer.write("Enter a password\n");
        String input = reader.readLine();

        while(!(validator.validate(input))){
            writer.write("Password not allowed! Try again\n");
            input = reader.readLine();
        }

        writer.write("Good!\n");
    }
}

ValidateExercise1Maven_src_main_java_tutorial_Program.java

package tutorial;

import tutorial.validate.Validator;

/**
 * Created by camille on 25/05/2016.
 */
public class Program {
    private final Validator validator;
    private final Writer writer;
    private  final Reader reader;

    public Program(Validator validator, Writer writer, Reader reader){
        this.validator = validator;
        this.writer = writer;
        this.reader = reader;
    }
    
    void start(){

        writer.write("Please enter your name\n");
        String input = reader.readLine();
        while(!(validator.validate(input))){
            writer.write("Your name is incorrect. Try again!\n");
            input = reader.readLine();
        }
        writer.write("Name Correct!");

    }
}

ValidateExercise1Maven_src_main_java_tutorial_ProgramFactory.java

package tutorial;

import tutorial.validate.LengthValidator;

/**
 * Created by camille on 26/05/2016.
 */
public class ProgramFactory {
    public Program createProgram(){
        return new Program( new LengthValidator(),
                            new WriterImpl(),
                            new ReaderImpl());
    }
}

ValidateExercise1Maven_src_main_java_tutorial_Reader.java

package tutorial;

/**
 * Created by camille on 26/05/2016.
 */
public interface Reader {
    String readLine();
}

ValidateExercise1Maven_src_main_java_tutorial_ReaderImpl.java

package tutorial;


import java.util.Scanner;

/**
 * Created by camille on 26/05/2016.
 */
public class ReaderImpl implements Reader {

    private final Scanner reader;

    public ReaderImpl(){
        reader = new Scanner(System.in);
    }

    @Override
    public String readLine() {
        return reader.nextLine();
    }
}

ValidateExercise1Maven_src_main_java_tutorial_validate_CaseValidator.java

package tutorial.validate;

/**
 * Created by camille on 25/05/2016.
 */
public class CaseValidator implements Validator {

    @Override
    public boolean validate(String name){
        return name.equals(name.toLowerCase());
    }
}

ValidateExercise1Maven_src_main_java_tutorial_validate_LengthValidator.java

package tutorial.validate;

/**
 * Created by camille on 25/05/2016.
 */

public class LengthValidator implements Validator {

    @Override
    public boolean validate(String name){
        return name.length() >=2;
    }
}

ValidateExercise1Maven_src_main_java_tutorial_validate_Validator.java

package tutorial.validate;

/**
 * Created by camille on 25/05/2016.
 */
public interface Validator {
    boolean validate(String name);
}

ValidateExercise1Maven_src_main_java_tutorial_Welcomer.java

package tutorial;


/**
 * Created by camille on 25/05/2016.
 */

public class Welcomer {
    private final Writer writer;
    private final NameRequester nameRequester;
    private final PasswordRequester passwordRequester;

    public Welcomer(Writer writer, NameRequester nameRequester, PasswordRequester passwordRequester){
        this.writer = writer;
        this.nameRequester = nameRequester;
        this.passwordRequester = passwordRequester;
    }

    void start(){
        writer.write("Hey! Welcome in the awesome Name Validator!\n");
        nameRequester.start();
        passwordRequester.start();
    }
}

ValidateExercise1Maven_src_main_java_tutorial_WelcomerFactory.java

package tutorial;

import tutorial.validate.CaseValidator;
import tutorial.validate.Validator;

/**
 * Created by camille on 26/05/2016.
 */
public class WelcomerFactory {
    public Welcomer createWelcomer(){

        Writer writer = new WriterImpl();
        Reader reader = new ReaderImpl();
        Validator validator = new CaseValidator();
        NameRequester nameRequester = new NameRequesterImpl(writer, reader, validator);
        PasswordRequester passwordRequester = new PasswordRequesterImpl(writer, reader, validator);


        return new Welcomer(writer, nameRequester, passwordRequester);
    }
}

/*TODO
Can I delete Program, Pogramfactory and PorgramTest?
*/

ValidateExercise1Maven_src_main_java_tutorial_Writer.java

package tutorial;

/**
 * Created by camille on 26/05/2016.
 */
public interface Writer {
    void write(String text);
}

ValidateExercise1Maven_src_main_java_tutorial_WriterImpl.java

package tutorial;

/**
 * Created by camille on 26/05/2016.
 */
public class WriterImpl implements Writer{

    @Override
    public void write(String text) {

        System.out.print(text);
    }
}

ValidateExercise1Maven_src_test_java_tutorial_MockNameRequester.java

package tutorial;

/**
 * Created by camille on 08/06/2016.
 */
public class MockNameRequester implements NameRequester {
    public boolean isStarted = false;

    @Override
    public void start() { isStarted = true; }
}

ValidateExercise1Maven_src_test_java_tutorial_MockPasswordRequester.java

package tutorial;

/**
 * Created by camille on 12/06/2016.
 */
public class MockPasswordRequester implements PasswordRequester {
    public boolean isStarted = false;

    @Override
    public void start() { isStarted = true; }
}

ValidateExercise1Maven_src_test_java_tutorial_MockReader.java

package tutorial;

import java.util.Iterator;

/**
 * Created by camille on 29/05/2016.
 */
public class MockReader implements Reader {
    private final Iterator<String> input;

    public MockReader(Iterator<String> input) {
        this.input = input;
    }

    @Override
    public String readLine() {
        return input.next();
    }
}

ValidateExercise1Maven_src_test_java_tutorial_MockWriter.java

package tutorial;

import java.util.ArrayList;
import java.util.List;


/**
 * Created by camille on 29/05/2016.
 */
public class MockWriter implements Writer {
    public final List<String> lines;


    public MockWriter() {
        this.lines = new ArrayList<>();
    }

    @Override
    public void write(String text){
        lines.add(text);
    }
}

ValidateExercise1Maven_src_test_java_tutorial_ProgramTest.java

package tutorial;

import org.junit.Test;
import tutorial.validate.MockValidator;

import java.util.Arrays;
import java.util.List;

import static org.junit.Assert.assertEquals;

/**
 * Created by camille on 29/05/2016.
 */
public class ProgramTest {

    @Test
    public void testIter(){
        List<String> input = Arrays.asList("bidon", "gojzefz", "bill");

        MockValidator validator = new MockValidator("bill");
        MockWriter writer = new MockWriter();
        MockReader reader = new MockReader(input.iterator());
        new Program(validator, writer, reader).start();

        assertEquals("Please enter your name\n", writer.lines.get(0));
        assertEquals("Your name is incorrect. Try again!\n", writer.lines.get(1));
        assertEquals("Your name is incorrect. Try again!\n", writer.lines.get(2));
        assertEquals("Name Correct!", writer.lines.get(3));
    }

}

ValidateExercise1Maven_src_test_java_tutorial_TestNameRequester.java

package tutorial;

import org.junit.Test;
import tutorial.validate.MockValidator;

import java.util.Arrays;
import java.util.List;

import static org.junit.Assert.assertTrue;
import static org.junit.Assert.assertFalse;

/**
 * Created by camille on 12/06/2016.
 */
public class TestNameRequester {

    @Test
    public void test(){
        List<String> input = Arrays.asList("False", "False AGAIN", "good name");

        MockValidator mockValidator = new MockValidator("good name");

        assertFalse(mockValidator.validate(input.get(0)));
        assertFalse(mockValidator.validate(input.get(1)));
        assertTrue(mockValidator.validate(input.get(2)));

    }
}

ValidateExercise1Maven_src_test_java_tutorial_validate_CaseValidatorTest.java

package tutorial.validate;

import org.junit.Test;

import static org.junit.Assert.*;

/**
 * Created by camille on 29/05/2016.
 */
public class CaseValidatorTest {

    @Test
    public void firstLetterIsUpperCase_False(){
        CaseValidator validator = new CaseValidator();
        assertFalse(validator.validate("Uppercase"));
    }

    @Test
    public void allLettersAreLowerCase_True(){
        CaseValidator validator = new CaseValidator();
        assertTrue(validator.validate("lowercase"));
    }
}

ValidateExercise1Maven_src_test_java_tutorial_validate_LengthValidatorTest.java

package tutorial.validate;

import org.junit.Test;

import static org.junit.Assert.*;

/**
 * Created by camille on 29/05/2016.
 */
public class LengthValidatorTest {

    @Test
    public void whenNameTooShort_invalid(){
        LengthValidator validator = new LengthValidator();
        assertFalse(validator.validate("."));
    }

    @Test
    public void whenNameLongEnough_valid(){
        LengthValidator validator = new LengthValidator();
        assertTrue(validator.validate("camille"));
    }
}

ValidateExercise1Maven_src_test_java_tutorial_validate_MockValidator.java

package tutorial.validate;

/**
 * Created by camille on 29/05/2016.
 */
public class MockValidator implements Validator{
    private  final String validName;

    public MockValidator(String validName) {
        this.validName = validName;
    }

    @Override
    public boolean validate(String name) {
        return validName.equals(name);
    }
}

ValidateExercise1Maven_src_test_java_tutorial_WelcomerTest.java

package tutorial;

import org.junit.Test;


import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

/**
 * Created by camille on 08/06/2016.
 */
public class WelcomerTest {

    @Test
    public void test(){

        MockWriter writer = new MockWriter();
        MockNameRequester nameRequester = new MockNameRequester();
        MockPasswordRequester passwordRequester = new MockPasswordRequester();

        new Welcomer(writer, nameRequester, passwordRequester).start();

        assertEquals("Hey! Welcome in the awesome Name Validator!\n",writer.lines.get(0));
        assertTrue(nameRequester.isStarted);
        assertTrue(passwordRequester.isStarted);
    }
}

ValidateExercise1Maven_ValidateExercise1Maven.iml

<?xml version="1.0" encoding="UTF-8"?>
<module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8" inherit-compiler-output="false">
    <output url="file://$MODULE_DIR$/target/classes" />
    <output-test url="file://$MODULE_DIR$/target/test-classes" />
    <content url="file://$MODULE_DIR$">
      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
      <excludeFolder url="file://$MODULE_DIR$/target" />
    </content>
    <orderEntry type="inheritedJdk" />
    <orderEntry type="sourceFolder" forTests="false" />
    <orderEntry type="library" scope="TEST" name="Maven: junit:junit:4.12" level="project" />
    <orderEntry type="library" scope="TEST" name="Maven: org.hamcrest:hamcrest-core:1.3" level="project" />
  </component>
</module>