added tests for easydrop core

src/test/java/de/rwu/easydrop/core/CoreTest.java

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+package de.rwu.easydrop.core;
+
+import org.junit.jupiter.api.Test;
+
+public class CoreTest {
+    @Test
+    void testRunCore() {
+
+    }
+}

src/test/java/de/rwu/easydrop/core/OfferIdentifierTest.java

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+package de.rwu.easydrop.core;
+
+import org.junit.jupiter.api.Test;
+
+public class OfferIdentifierTest {
+    @Test
+    void testRunIdentifier() {
+
+    }
+}

src/test/java/de/rwu/easydrop/core/OfferProvisionerTest.java

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+package de.rwu.easydrop.core;
+
+import org.junit.jupiter.api.Test;
+
+public class OfferProvisionerTest {
+    @Test
+    void testRunProvisioner() {
+
+    }
+}

src/test/java/de/rwu/easydrop/core/OfferReviewerTest.java

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+package de.rwu.easydrop.core;
+
+import org.junit.jupiter.api.Test;
+
+public class OfferReviewerTest {
+    @Test
+    void testRunReviewer() {
+
+    }
+}

src/test/java/de/rwu/easydrop/core/OfferUpdaterTest.java

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+package de.rwu.easydrop.core;
+
+import org.junit.jupiter.api.Test;
+
+public class OfferUpdaterTest {
+    @Test
+    void testRunUpdater() {
+
+    }
+}