#76 feat: unitTests for LinkDAO

gemeinsamforschen/src/test/java/unipotsdam/gf/modules/journal/model/dao/LinkDAOImplTest.java

+package unipotsdam.gf.modules.journal.model.dao;
+
+import org.junit.Test;
+import unipotsdam.gf.core.database.mysql.MysqlConnect;
+import unipotsdam.gf.core.database.mysql.VereinfachtesResultSet;
+import unipotsdam.gf.modules.journal.model.Link;
+
+import java.util.ArrayList;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+
+public class LinkDAOImplTest {
+
+    MysqlConnect connection = new MysqlConnect();
+    LinkDAO linkDAO = new LinkDAOImpl();
+
+    String testId = "-1";
+    String testProjectDescription = "testproject";
+    String testName = "testname";
+    String testLink = "https://www.test.de";
+    Link testLinkObj = new Link(testId, testProjectDescription, testName, testLink);
+
+    @Test
+    public void addLink() {
+
+        connection.connect();
+
+        //add Link
+        Link addLink = testLinkObj;
+
+        linkDAO.addLink(addLink);
+
+        //check if added
+        ArrayList<Link> resultLinks = getLinks(addLink.getProjectDescription());
+
+        assertEquals(1, resultLinks.size());
+
+        //check data
+        Link resultLink = resultLinks.get(0);
+
+        assertEquals(testLink, resultLink.getLink());
+        assertEquals(testName, resultLink.getName());
+        assertEquals(testProjectDescription, resultLink.getProjectDescription());
+
+        assertFalse(testId.equals(resultLink.getId()));
+
+        //cleanup
+        cleanup(resultLink.getId());
+
+        connection.close();
+    }
+
+    @Test
+    public void deleteLink() {
+        connection.connect();
+
+        //add Link
+        Link deleteLink = testLinkObj;
+
+        create(deleteLink);
+
+
+        //check if Link was created
+        ArrayList<Link> reultLinks = getLinks(deleteLink.getProjectDescription());
+        assertEquals(1, reultLinks.size());
+
+        //delete link
+        linkDAO.deleteLink(deleteLink.getId());
+
+        //check if Link deleted
+        reultLinks = getLinks(deleteLink.getProjectDescription());
+        assertEquals(0, reultLinks.size());
+
+        //cleanup
+        cleanup(deleteLink.getId());
+
+        connection.close();
+    }
+
+    @Test
+    public void getLink() {
+        connection.connect();
+
+        //addLink
+        Link getLink = testLinkObj;
+        create(getLink);
+
+        //get Link
+        Link resultLink = linkDAO.getLink(getLink.getId());
+
+        //check Data
+        assertEquals(testLink, resultLink.getLink());
+        assertEquals(testName, resultLink.getName());
+        assertEquals(testProjectDescription, resultLink.getProjectDescription());
+
+        //cleanup
+        cleanup(getLink.getId());
+
+        connection.close();
+
+    }
+
+    @Test
+    public void getAllLinks() {
+        connection.connect();
+
+        //addLinks
+        Link l = testLinkObj;
+        create(l);
+        l.setId("-2");
+        l.setName("othername");
+        create(l);
+        l.setId("-3");
+        l.setLink("404");
+        create(l);
+
+        //gettLinks
+        ArrayList<Link> resultLinks = getLinks(testProjectDescription);
+
+        //check
+        assertEquals(3, resultLinks.size());
+
+        //cleanup
+        cleanup("-1", "-2", "-3");
+
+        connection.close();
+    }
+
+    //Utility
+    private void create(Link deleteLink) {
+        String request = "INSERT INTO links (`id`, `projecdesription`, `name`, `link`) VALUES (?,?,?,?);";
+        connection.issueInsertOrDeleteStatement(request, deleteLink.getId(), deleteLink.getProjectDescription(), deleteLink.getName(), deleteLink.getLink());
+    }
+
+    private void cleanup(String... addLinks) {
+
+        for (String addLink : addLinks) {
+
+            String request = "DELETE FROM links WHERE id = ?;";
+            connection.issueInsertOrDeleteStatement(request, addLink);
+        }
+    }
+
+    private Link getLinkFromResultSet(VereinfachtesResultSet rs) {
+
+        String id = rs.getString("id");
+        String project = rs.getString("projecdesription");
+        String name = rs.getString("name");
+        String link = rs.getString("link");
+        return new Link(id, project, name, link);
+    }
+
+    private ArrayList<Link> getLinks(String addLink) {
+        ArrayList<Link> resultLinks = new ArrayList<>();
+
+        String request = "SELECT * FROM links WHERE projecdesription= ?;";
+        VereinfachtesResultSet rs = connection.issueSelectStatement(request, addLink);
+
+        while (rs.next()) {
+            resultLinks.add(getLinkFromResultSet(rs));
+        }
+
+        return resultLinks;
+    }
+}
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