feat[test]: add tests classes to visually display the folder structur…

…e of the project

src/test/java/edu/group5/app/control/WrapperTest.java

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+package edu.group5.app.control;
+
+public class WrapperTest {
+
+}

src/test/java/edu/group5/app/model/donation/DonationTest.java

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+package edu.group5.app.model.donation;
+
+public class DonationTest {
+
+}

src/test/java/edu/group5/app/model/organization/OrganizationTest.java

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+package edu.group5.app.model.organization;
+
+public class OrganizationTest {
+
+}

src/test/java/edu/group5/app/model/user/UserTest.java

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+package edu.group5.app.model.user;
+
+public class UserTest {
+
+}

src/test/java/edu/group5/app/utils/UtilitiesTest.java

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+package edu.group5.app.utils;
+
+public class UtilitiesTest {
+
+}

src/test/java/edu/group5/app/view/ViewTest.java

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+package edu.group5.app.view;
+
+public class ViewTest {
+
+}