implemented Methods and tests:

getFilteredPlantListByHarvestSaison
getFilteredPlantListByPlantingSaison
#12

src/main/java/ch/zhaw/gartenverwaltung/plantList/PlantListModel.java

@@ -3,10 +3,12 @@ package ch.zhaw.gartenverwaltung.plantList;
 import ch.zhaw.gartenverwaltung.io.HardinessZoneNotSetException;
 import ch.zhaw.gartenverwaltung.io.JsonPlantDatabase;
 import ch.zhaw.gartenverwaltung.io.PlantDatabase;
+import ch.zhaw.gartenverwaltung.types.GrowthPhaseType;
 import ch.zhaw.gartenverwaltung.types.HardinessZone;
 import ch.zhaw.gartenverwaltung.types.Plant;
 
 import java.io.IOException;
+import java.time.MonthDay;
 import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.List;
@@ -118,4 +120,44 @@ public class PlantListModel {
             return getFilteredPlantList(zone, plant -> plant.name().contains(searchString) || plant.description().contains(searchString));
         }
     }
+
+    /**
+     *
+     * @param type GrowPhaseType to filter
+     * @param zone selected hardiness zone
+     * @param from the earliest date to for the filter
+     * @param to the lastest date for the filter
+     * @return List of Plants with selected saison
+     * @throws HardinessZoneNotSetException If no {@link HardinessZone} was specified
+     * @throws IOException If the database cannot be accessed
+     */
+    private List<Plant> getFilteredPlantListBySaison(GrowthPhaseType type, HardinessZone zone, MonthDay from, MonthDay to) throws HardinessZoneNotSetException, IOException {
+        return getFilteredPlantList(zone, plant -> plant.lifecycle().stream().anyMatch(growthPhase -> growthPhase.startDate().compareTo(from) >= 0 && (growthPhase.startDate().compareTo(to) <= 0) && growthPhase.type() == type));
+    }
+
+    /**
+     *
+     * @param zone selected hardiness zone
+     * @param from the earliest date to for the filter
+     * @param to the lastest date for the filter
+     * @return List of Plants with selected saison
+     * @throws HardinessZoneNotSetException If no {@link HardinessZone} was specified
+     * @throws IOException If the database cannot be accessed
+     */
+    public List<Plant> getFilteredPlantListByPlantingSaison(HardinessZone zone, MonthDay from, MonthDay to) throws HardinessZoneNotSetException, IOException {
+        return getFilteredPlantListBySaison(GrowthPhaseType.PLANT, zone, from, to);
+    }
+
+    /**
+     *
+     * @param zone selected hardiness zone
+     * @param from the earliest date to for the filter
+     * @param to the lastest date for the filter
+     * @return List of Plants with selected saison
+     * @throws HardinessZoneNotSetException If no {@link HardinessZone} was specified
+     * @throws IOException If the database cannot be accessed
+     */
+    public List<Plant> getFilteredPlantListByHarvestSaison(HardinessZone zone, MonthDay from, MonthDay to) throws HardinessZoneNotSetException, IOException {
+        return getFilteredPlantListBySaison(GrowthPhaseType.HARVEST, zone, from, to);
+    }
 }

src/test/java/ch/zhaw/gartenverwaltung/plantList/PlantListModelTest.java

@@ -3,14 +3,14 @@ package ch.zhaw.gartenverwaltung.plantList;
 import ch.zhaw.gartenverwaltung.io.HardinessZoneNotSetException;
 import ch.zhaw.gartenverwaltung.io.JsonPlantDatabase;
 import ch.zhaw.gartenverwaltung.io.PlantDatabase;
-import ch.zhaw.gartenverwaltung.types.HardinessZone;
+import ch.zhaw.gartenverwaltung.types.*;
-import ch.zhaw.gartenverwaltung.types.Plant;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
 
 import java.io.IOException;
+import java.time.MonthDay;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Locale;
@@ -47,7 +47,11 @@ class PlantListModelTest {
                 0,
                 "sandy to loamy, loose soil, free of stones",
                 new ArrayList<>(),
-                new ArrayList<>())
+                List.of(new GrowthPhase(MonthDay.of(6, 4), MonthDay.of(12, 4), 0, new WateringCycle(0, 0, null), GrowthPhaseType.HARVEST, HardinessZone.ZONE_8A, new ArrayList<>()),
+                        new GrowthPhase(MonthDay.of(4, 3), MonthDay.of(12, 4), 0, new WateringCycle(0, 0, null), GrowthPhaseType.PLANT, HardinessZone.ZONE_8A, new ArrayList<>()),
+                        new GrowthPhase(MonthDay.of(8, 5), MonthDay.of(12, 4), 0, new WateringCycle(0, 0, null), GrowthPhaseType.PLANT, HardinessZone.ZONE_8A, new ArrayList<>()),
+                        new GrowthPhase(MonthDay.of(2, 8), MonthDay.of(12, 4), 0, new WateringCycle(0, 0, null), GrowthPhaseType.PLANT, HardinessZone.ZONE_8A, new ArrayList<>()),
+                        new GrowthPhase(MonthDay.of(10, 2), MonthDay.of(12, 4), 0, new WateringCycle(0, 0, null), GrowthPhaseType.PLANT, HardinessZone.ZONE_8A, new ArrayList<>())))
         );
         examplePlantList.add(new Plant(
                 0,
@@ -57,7 +61,8 @@ class PlantListModelTest {
                 6,
                 "sandy",
                 new ArrayList<>(),
-                new ArrayList<>())
+                List.of(new GrowthPhase(MonthDay.of(6, 4), MonthDay.of(12, 4), 0, new WateringCycle(0, 0, null), GrowthPhaseType.HARVEST, HardinessZone.ZONE_8A, new ArrayList<>()),
+                        new GrowthPhase(MonthDay.of(6, 4), MonthDay.of(12, 4), 0, new WateringCycle(0, 0, null), GrowthPhaseType.PLANT, HardinessZone.ZONE_8A, new ArrayList<>())))
         );
         examplePlantList.add(new Plant(
                 1,
@@ -67,7 +72,7 @@ class PlantListModelTest {
                 0,
                 "sandy to loamy, loose soil, free of stones",
                 new ArrayList<>(),
-                new ArrayList<>())
+                List.of(new GrowthPhase(MonthDay.of(4, 4), MonthDay.of(12, 4), 0, new WateringCycle(0, 0, null), GrowthPhaseType.PLANT, HardinessZone.ZONE_8A, new ArrayList<>())))
         );
     }
 
@@ -166,4 +171,24 @@ class PlantListModelTest {
         plantListResult = model.getFilteredPlantListByString(HardinessZone.ZONE_8A, "apple");
         assertEquals(0, plantListResult.size());
     }
+
+    @Test
+    void getFilteredPlantListByPlantingSaison() throws HardinessZoneNotSetException, IOException {
+        model.setCurrentZone(HardinessZone.ZONE_1A);
+        List<Plant> plantListResult = model.getFilteredPlantListByPlantingSaison(HardinessZone.ZONE_8A, MonthDay.of(4, 4), MonthDay.of(8, 4));
+        assertEquals(2, plantListResult.size());
+        assertEquals(examplePlantList.get(2), plantListResult.get(0));
+        assertEquals(examplePlantList.get(1), plantListResult.get(1));
+    }
+
+    @Test
+    void getFilteredPlantListByHarvestSaison() throws HardinessZoneNotSetException, IOException {
+        model.setCurrentZone(HardinessZone.ZONE_1A);
+        List<Plant> plantListResult = model.getFilteredPlantListByHarvestSaison(HardinessZone.ZONE_8A, MonthDay.of(4, 4), MonthDay.of(8, 4));
+        assertEquals(2, plantListResult.size());
+        assertEquals(examplePlantList.get(1), plantListResult.get(0));
+        assertEquals(examplePlantList.get(0), plantListResult.get(1));
+    }
+
+
 }