Implement REST Interface to get all the existing Objects of a resource type

src/main/java/de/unipotsdam/cs/toolup/util/AssertionUtil.java

+package de.unipotsdam.cs.toolup.util;
+
+import org.apache.commons.lang3.builder.ToStringBuilder;
+
+import java.util.Collection;
+
+public class AssertionUtil {
+
+    public static <T> void assertContainsAll(Collection<T> expectedCollection, Collection<? extends T> actualCollection) {
+        if (expectedCollection == null && actualCollection == null) {
+            return;
+        }
+
+        if (expectedCollection == null ^ actualCollection == null) {
+            throw new AssertionError("Expected: " + expectedCollection + "\n but was: " + actualCollection);
+        }
+
+        if (!expectedCollection.containsAll(actualCollection)) {
+            String expected = ToStringBuilder.reflectionToString(expectedCollection);
+            String actual = ToStringBuilder.reflectionToString(actualCollection);
+            throw new AssertionError("Expected: " + expected + "\n but was: " + actual);
+        }
+    }
+
+    public static <T> void assertCollectionEquals(Collection<T> expectedCollection, Collection<T> actualCollection) {
+        if (expectedCollection == null && actualCollection == null) {
+            return;
+        }
+
+        if (expectedCollection == null ^ actualCollection == null) {
+            throw new AssertionError("Expected: " + expectedCollection + "\n but was: " + actualCollection);
+        }
+
+        if (expectedCollection.size() != actualCollection.size()) {
+            throw new AssertionError("Expected size " + expectedCollection.size() + "\n but was: " + actualCollection.size());
+        }
+        assertContainsAll(expectedCollection, actualCollection);
+        assertContainsAll(actualCollection, expectedCollection);
+    }
+}

src/test/java/de/unipotsdam/cs/toolup/util/AssertionUtilTest.java

+package de.unipotsdam.cs.toolup.util;
+
+import org.testng.annotations.Test;
+
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.LinkedList;
+
+public class AssertionUtilTest {
+
+    @Test(expectedExceptions = {AssertionError.class})
+    public void testThatCollectionDoesNotEqualCollection() {
+        //arrange
+        Collection<Integer> coll1 = new LinkedList<>();
+        coll1.add(5);
+        Collection<Integer> coll2 = new HashSet<>();
+        coll2.add(6);
+
+        //act
+        AssertionUtil.assertCollectionEquals(coll2, coll1);
+
+        //assert
+    }
+
+    @Test
+    public void testThatCollectionEqualsCollection() {
+        //arrange
+        Collection<Integer> coll1 = new LinkedList<>();
+        coll1.add(5);
+        Collection<Integer> coll2 = new HashSet<>();
+        coll2.add(5);
+
+        //act
+        AssertionUtil.assertCollectionEquals(coll2, coll1);
+
+        //assert
+    }
+
+    @Test
+    public void testThatListEqualsSet() {
+        //arrange
+        LinkedList<Integer> coll1 = new LinkedList<>();
+        coll1.add(5);
+        HashSet<Integer> coll2 = new HashSet<>();
+        coll2.add(5);
+
+        //act
+        AssertionUtil.assertCollectionEquals(coll2, coll1);
+
+        //assert
+    }
+
+}

src/test/java/de/unipotsdam/cs/toolup/ws/resource/ApplicationResourceTest.java

+package de.unipotsdam.cs.toolup.ws.resource;
+
+import de.unipotsdam.cs.toolup.ws.beans.ApplicationBean;
+import org.testng.annotations.Test;
+
+import java.util.Arrays;
+import java.util.Collection;
+
+import static de.unipotsdam.cs.toolup.model.BusinessObjectTest.APPLICATION_TEST_ID_1;
+import static de.unipotsdam.cs.toolup.model.BusinessObjectTest.APPLICATION_TEST_ID_2;
+import static org.testng.Assert.assertEquals;
+
+public class ApplicationResourceTest {
+
+    @Test
+    public void testThatApplicationResourceGETWithOutIdReturnsAllApplications() throws Exception {
+        //arrange
+        Collection<ApplicationBean> expectedApps = Arrays.asList(
+                ApplicationBean.getBean(APPLICATION_TEST_ID_1),
+                ApplicationBean.getBean(APPLICATION_TEST_ID_2)
+        );
+
+        ApplicationResource appRes = new ApplicationResource();
+
+        //act
+        Collection<ApplicationBean> apps = appRes.getAll();
+
+        //assert
+        assertEquals(expectedApps, apps);
+    }
+
+}

src/test/java/de/unipotsdam/cs/toolup/ws/resource/CategoryResourceTest.java

+package de.unipotsdam.cs.toolup.ws.resource;
+
+import de.unipotsdam.cs.toolup.ws.beans.CategoryBean;
+import org.testng.annotations.Test;
+
+import java.util.Arrays;
+import java.util.Collection;
+
+import static de.unipotsdam.cs.toolup.model.BusinessObjectTest.CATEGORY_TEST_ID_11;
+import static de.unipotsdam.cs.toolup.model.BusinessObjectTest.CATEGORY_TEST_ID_12;
+import static org.testng.Assert.assertEquals;
+
+public class CategoryResourceTest {
+
+    @Test
+    public void testThatCategoryResourceGETWithOutIdReturnsAllCategories() throws Exception {
+        //arrange
+        Collection<CategoryBean> expectedCats = Arrays.asList(
+                CategoryBean.getBean(CATEGORY_TEST_ID_11),
+                CategoryBean.getBean(CATEGORY_TEST_ID_12)
+        );
+
+        CategoryResource catRes = new CategoryResource();
+
+        //act
+        Collection<CategoryBean> cats = catRes.getAll();
+
+        //assert
+        assertEquals(expectedCats, cats);
+    }
+
+}

src/test/java/de/unipotsdam/cs/toolup/ws/resource/FeatureResourceTest.java

+package de.unipotsdam.cs.toolup.ws.resource;
+
+import de.unipotsdam.cs.toolup.util.AssertionUtil;
+import de.unipotsdam.cs.toolup.ws.beans.FeatureBean;
+import org.testng.annotations.Test;
+
+import java.util.Arrays;
+import java.util.Collection;
+
+import static de.unipotsdam.cs.toolup.model.BusinessObjectTest.FEATURE_TEST_ID_21;
+import static de.unipotsdam.cs.toolup.model.BusinessObjectTest.FEATURE_TEST_ID_22;
+
+
+public class FeatureResourceTest {
+
+    @Test
+    public void testThatFeatureResourceGETWithOutIdReturnsAllFeatures() throws Exception {
+        //arrange
+        Collection<FeatureBean> expectedFeats = Arrays.asList(
+                FeatureBean.getBean(FEATURE_TEST_ID_21),
+                FeatureBean.getBean(FEATURE_TEST_ID_22)
+        );
+
+        FeatureResource featRes = new FeatureResource();
+
+        //act
+        Collection<FeatureBean> feats = featRes.getAll();
+
+        //assert
+        AssertionUtil.assertCollectionEquals(expectedFeats, feats);
+    }
+
+}