diff --git a/src/main/java/ch/zhaw/gartenverwaltung/io/JsonGardenPlan.java b/src/main/java/ch/zhaw/gartenverwaltung/io/JsonGardenPlan.java
index 5a25a0a..3100301 100644
--- a/src/main/java/ch/zhaw/gartenverwaltung/io/JsonGardenPlan.java
+++ b/src/main/java/ch/zhaw/gartenverwaltung/io/JsonGardenPlan.java
@@ -20,7 +20,7 @@ import java.util.Map;
 import java.util.Optional;
 
 public class JsonGardenPlan implements GardenPlan {
-    private final URL dataSource = getClass().getResource("user-crops.json");
+    private final URL dataSource;
 
     private IdProvider idProvider;
     private Map<Long, Crop> cropMap = Collections.emptyMap();
@@ -40,7 +40,21 @@ public class JsonGardenPlan implements GardenPlan {
     }
 
     /**
-     * @see GardenPlan#getCrops()
+     * Default constructor
+     */
+    public JsonGardenPlan() {
+        this.dataSource = getClass().getResource("user-crops.json");
+    }
+
+    /**
+     * Constructor to use a specified {@link URL} as a {@link #dataSource}
+     * @param dataSource A {@link URL} to the file to be used as a data source
+     */
+    public JsonGardenPlan(URL dataSource) {
+        this.dataSource = dataSource;
+    }
+    /**
+     * {@inheritDoc}
      */
     @Override
     public List<Crop> getCrops() throws IOException {
@@ -51,7 +65,7 @@ public class JsonGardenPlan implements GardenPlan {
     }
 
     /**
-     * @see GardenPlan#getCropById(long)
+     * {@inheritDoc}
      */
     @Override
     public Optional<Crop> getCropById(long id) throws IOException {
@@ -62,7 +76,7 @@ public class JsonGardenPlan implements GardenPlan {
     }
 
     /**
-     * @see GardenPlan#saveCrop(Crop)
+     * {@inheritDoc}
      *
      * Saves a crop to the database.
      * If no {@link Crop#cropId} is set, one will be generated and
@@ -79,7 +93,7 @@ public class JsonGardenPlan implements GardenPlan {
     }
 
     /**
-     * @see GardenPlan#removeCrop(Crop)
+     * {@inheritDoc}
      */
     @Override
     public void removeCrop(Crop crop) throws IOException {
diff --git a/src/main/java/ch/zhaw/gartenverwaltung/types/Crop.java b/src/main/java/ch/zhaw/gartenverwaltung/types/Crop.java
index fbd6286..e8f539f 100644
--- a/src/main/java/ch/zhaw/gartenverwaltung/types/Crop.java
+++ b/src/main/java/ch/zhaw/gartenverwaltung/types/Crop.java
@@ -1,6 +1,7 @@
 package ch.zhaw.gartenverwaltung.types;
 
 import java.time.LocalDate;
+import java.util.Objects;
 import java.util.Optional;
 
 public class Crop {
@@ -41,6 +42,24 @@ public class Crop {
     public LocalDate getStartDate() { return startDate; }
     public double getArea() { return area; }
 
+    @Override
+    public boolean equals(Object other) {
+        if (this == other) return true;
+        if (other instanceof Crop otherCrop) {
+            return Objects.equals(this.cropId, otherCrop.cropId) &&
+                    plantId == otherCrop.plantId &&
+                    startDate != null && startDate.equals(otherCrop.startDate) &&
+                    area == otherCrop.area;
+        }
+        return false;
+    }
+
+    @Override
+    public int hashCode() {
+        int startCode = startDate != null ? startDate.hashCode() : 0;
+        return (int) plantId ^ (startCode << 16);
+    }
+
     @Override
     public String toString() {
         return String.format("Crop [ cropId: %d, plantId: %d, startDate: %s, area: %f ]",
diff --git a/src/test/java/ch/zhaw/gartenverwaltung/io/JsonPlantDatabaseTest.java b/src/test/java/ch/zhaw/gartenverwaltung/io/JsonPlantDatabaseTest.java
index 24b4b53..b8bbeb3 100644
--- a/src/test/java/ch/zhaw/gartenverwaltung/io/JsonPlantDatabaseTest.java
+++ b/src/test/java/ch/zhaw/gartenverwaltung/io/JsonPlantDatabaseTest.java
@@ -8,7 +8,6 @@ import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 
 import java.io.IOException;
-import java.text.SimpleDateFormat;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Optional;
@@ -16,7 +15,6 @@ import java.util.stream.Collectors;
 
 public class JsonPlantDatabaseTest {
     PlantDatabase testDatabase;
-    SimpleDateFormat formatter = new SimpleDateFormat("dd.MM.yyyy");
 
     @BeforeEach
     void connectToDb() {
@@ -30,9 +28,7 @@ public class JsonPlantDatabaseTest {
         List<Plant> testList;
         try {
             testList = testDatabase.getPlantList(HardinessZone.ZONE_8A);
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        } catch (HardinessZoneNotSetException e) {
+        } catch (IOException | HardinessZoneNotSetException e) {
             throw new RuntimeException(e);
         }
         Assertions.assertEquals(3, testList.size());
@@ -48,9 +44,7 @@ public class JsonPlantDatabaseTest {
         List<Plant> testList;
         try {
             testList = testDatabase.getPlantList(HardinessZone.ZONE_1A);
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        } catch (HardinessZoneNotSetException e) {
+        } catch (IOException | HardinessZoneNotSetException e) {
             throw new RuntimeException(e);
         }
         Assertions.assertEquals(0, testList.size());
@@ -64,9 +58,7 @@ public class JsonPlantDatabaseTest {
         Optional<Plant> testPlant;
         try {
             testPlant = testDatabase.getPlantById(HardinessZone.ZONE_8A, 1);
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        } catch (HardinessZoneNotSetException e) {
+        } catch (IOException | HardinessZoneNotSetException e) {
             throw new RuntimeException(e);
         }
         Assertions.assertTrue(testPlant.isPresent());
@@ -75,20 +67,12 @@ public class JsonPlantDatabaseTest {
 
     @Test
     @DisplayName("Check whether single access respects zone correctly.")
-    void getPlantByIdAndWrongZone() {
-        Optional<Plant> testPlant;
-        try {
-            testPlant = testDatabase.getPlantById(HardinessZone.ZONE_1A, 1);
-            Assertions.assertFalse(testPlant.isPresent());
-            testPlant = testDatabase.getPlantById(HardinessZone.ZONE_8A, 1);
-            Assertions.assertTrue(testPlant.isPresent());
-
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        } catch (HardinessZoneNotSetException e) {
-            throw new RuntimeException(e);
-        }
+    void getPlantByIdAndWrongZone() throws HardinessZoneNotSetException, IOException {
+        Optional<Plant> testPlant = testDatabase.getPlantById(HardinessZone.ZONE_1A, 1);
+        Assertions.assertFalse(testPlant.isPresent());
+        testPlant = testDatabase.getPlantById(HardinessZone.ZONE_8A, 1);
         Assertions.assertTrue(testPlant.isPresent());
+
         Assertions.assertEquals("Early Carrot", testPlant.get().name());
     }
 
@@ -98,9 +82,7 @@ public class JsonPlantDatabaseTest {
         Optional<Plant> testPlant;
         try {
             testPlant = testDatabase.getPlantById(HardinessZone.ZONE_8A, 99);
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        } catch (HardinessZoneNotSetException e) {
+        } catch (IOException | HardinessZoneNotSetException e) {
             throw new RuntimeException(e);
         }
         Assertions.assertFalse(testPlant.isPresent());
diff --git a/src/test/resources/ch/zhaw/gartenverwaltung/io/test-user-crops.json b/src/test/resources/ch/zhaw/gartenverwaltung/io/test-user-crops.json
new file mode 100644
index 0000000..ebd1d2d
--- /dev/null
+++ b/src/test/resources/ch/zhaw/gartenverwaltung/io/test-user-crops.json
@@ -0,0 +1,20 @@
+[
+  {
+    "cropId": 0,
+    "plantId": 1,
+    "startDate": "2023-02-25",
+    "area": 0.5
+  },
+  {
+    "cropId": 1,
+    "plantId": 1,
+    "startDate": "2023-03-01",
+    "area": 0.5
+  },
+  {
+    "cropId": 2,
+    "plantId": 0,
+    "startDate": "2023-03-25",
+    "area": 1.5
+  }
+]
\ No newline at end of file
diff --git a/src/test/resources/ch/zhaw/gartenverwaltung/io/user-crops.json b/src/test/resources/ch/zhaw/gartenverwaltung/io/user-crops.json
new file mode 100644
index 0000000..32960f8
--- /dev/null
+++ b/src/test/resources/ch/zhaw/gartenverwaltung/io/user-crops.json
@@ -0,0 +1,2 @@
+[
+]
\ No newline at end of file