refactor: first attempt at dependency injection

also some more renaming and improving date-picker dialog

src/test/java/ch/zhaw/gartenverwaltung/models/GardenPlanModelTest.java

@@ -1,9 +1,6 @@
 package ch.zhaw.gartenverwaltung.models;
 
 import ch.zhaw.gartenverwaltung.io.*;
-import ch.zhaw.gartenverwaltung.models.Garden;
-import ch.zhaw.gartenverwaltung.models.PlantNotFoundException;
-import ch.zhaw.gartenverwaltung.models.GardenSchedule;
 import ch.zhaw.gartenverwaltung.types.*;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -13,6 +10,7 @@ import java.time.LocalDate;
 import java.time.MonthDay;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Optional;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertTrue;
@@ -70,7 +68,7 @@ public class GardenPlanModelTest {
         exampleCrop2 = new Crop(1,LocalDate.of(2023,3,1));
         exampleCrop2.withId(1);
         exampleCrop2.withArea(0.5);
-        exampleCrop3 = new Crop(0,LocalDate.of(2023,3,01));
+        exampleCrop3 = new Crop(0,LocalDate.of(2023,3,1));
         exampleCrop3.withId(2);
         exampleCrop3.withArea(1.0);
 
@@ -81,7 +79,7 @@ public class GardenPlanModelTest {
         cropList = mockGardenPlan(exampleCrops);
 
         GardenSchedule gardenSchedule = new GardenSchedule(new JsonTaskList(), new JsonPlantList());
-        model = new Garden(gardenSchedule);
+        model = new Garden(gardenSchedule, cropList);
     }
 
     CropList mockGardenPlan(List<Crop> cropList) throws IOException {
@@ -96,15 +94,16 @@ public class GardenPlanModelTest {
     void plantAsCrop() throws HardinessZoneNotSetException, IOException, PlantNotFoundException {
 
         model.plantAsCrop(examplePlantOnion, LocalDate.of(2023,3,1));
-        exampleCropOnion = model.getCrop(2L).get();
-        assertEquals(model.getCrops().get(2),exampleCropOnion);
+        Optional<Crop> exampleCrop = model.getCrop(2L);
+        assertTrue(exampleCrop.isPresent());
+        assertEquals(model.getCrops().get(2), exampleCrop.get());
 
     }
 
     @Test
     void removeCrop() throws IOException {
         exampleCrop1.withId(2);
-        exampleCrop1.withArea(1.500000);
+        exampleCrop1.withArea(1.5);
         model.removeCrop(exampleCrop1);
         assertEquals(2,model.getCrops().size());
     }