Merge branch 'league-play-refactoring' of https://github.com/RIT-SWEN-262/designproject-design-6 into league-play-refactoringleague-play-refactoring

Merging?

19 files changed, 995 insertions, 102 deletions

diff --git a/src/test/java/design/TestCourseList.java b/src/test/java/design/TestCourseList.java
deleted file mode 100644
index f943852..0000000
--- a/src/test/java/design/TestCourseList.java
+++ /dev/null
@@ -1,86 +0,0 @@
-// package design;
-
-// import static org.junit.jupiter.api.Assertions.assertEquals;
-// import static org.junit.jupiter.api.Assertions.assertTrue;
-
-// import org.junit.jupiter.api.Test;
-// import design.model.course_search.*;
-// import design.model.*;
-
-// import java.util.List;
-
-// class TestCourseList {
-
-//     // A dummy Course implementation for testing
-//     private static class DummyCourse implements ICourse {
-//         private final String name;
-//         private final float difficulty;
-
-//         public DummyCourse(String name, float difficulty) {
-//             this.name = name;
-//             this.difficulty = difficulty;
-//         }
-
-//         @Override
-//         public String getName() { return name; }
-
-//         @Override
-//         public float getDifficultyRating() { return difficulty; }
-
-//         @Override
-//         public String getLocation() { return ""; }
-
-//         @Override
-//         public int getTotalPar() { return 0; }
-
-//         @Override
-//         public int getHoleCount() { return 0; }
-
-//         @Override
-//         public List<Hole> getHoles() { return null; }
-//     }
-
-//     // A simple sorter that sorts courses by difficulty
-//     private static class SortByDifficultyTest implements CourseSorter {
-//         @Override
-//         public void sortCourses(List<ICourse> courses) {
-//             courses.sort((c1, c2) -> Float.compare(c1.getDifficultyRating(), c2.getDifficultyRating()));
-//         }
-//     }
-
-//     @Test
-//     public void testAddAndRemoveCourses() {
-//         CourseList courseList = new CourseList();
-//         ICourse course1 = new DummyCourse("Course A", 2.0f);
-//         ICourse course2 = new DummyCourse("Course B", 5.0f);
-
-//         courseList.add(course1);
-//         courseList.add(course2);
-
-//         assertEquals(2, courseList.getCourses().size(), "Should have 2 courses after adding");
-//         assertTrue(courseList.getCourses().contains(course1), "Course A should be in the list");
-//         assertTrue(courseList.getCourses().contains(course2), "Course B should be in the list");
-
-//         courseList.remove(course1);
-//         assertEquals(1, courseList.getCourses().size(), "Should have 1 course after removal");
-//         assertTrue(!courseList.getCourses().contains(course1), "Course A should no longer be in the list");
-//     }
-
-//     @Test
-//     public void testSortCourses() {
-//         CourseList courseList = new CourseList();
-//         courseList.add(new DummyCourse("Course A", 3.0f));
-//         courseList.add(new DummyCourse("Course B", 1.0f));
-//         courseList.add(new DummyCourse("Course C", 2.0f));
-
-//         // Set sorting strategy
-//         courseList.setSorter(new SortByDifficultyTest());
-
-//         courseList.sort();
-
-//         List<ICourse> sorted = courseList.getCourses();
-//         assertEquals("Course B", sorted.get(0).getName(), "First course should have lowest difficulty");
-//         assertEquals("Course C", sorted.get(1).getName(), "Second course should have medium difficulty");
-//         assertEquals("Course A", sorted.get(2).getName(), "Last course should have highest difficulty");
-//     }
-// }
\ No newline at end of file
diff --git a/src/test/java/design/model/ClubTest.java b/src/test/java/design/model/ClubTest.java
index 9ac8130..f47405f 100644
--- a/src/test/java/design/model/ClubTest.java
+++ b/src/test/java/design/model/ClubTest.java
@@ -1,6 +1,13 @@
 package design.model;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Modifier;
+
 import org.junit.jupiter.api.Tag;
 import org.junit.jupiter.api.Test;
 
@@ -17,13 +24,23 @@ public class ClubTest {
     {
         Club testClub = new Club("John Doe", "The Slammer", ClubType.DRIVER);
 
-        assertEquals(0, testClub.getId());
+        assertEquals(-1, testClub.getId());
         assertEquals("John Doe", testClub.getManufacture());
         assertEquals("The Slammer", testClub.getNickname());
         assertEquals(ClubType.DRIVER, testClub.getClubType());
     }
 
     @Test
+    void testPrivateConstructor() throws Exception
+    {
+        Constructor<Club> constructor = Club.class.getDeclaredConstructor(int.class, String.class, String.class, ClubType.class);
+        assertTrue(Modifier.isPrivate(constructor.getModifiers()));
+        constructor.setAccessible(true);
+        Club testClub = constructor.newInstance(0, "John Doe", "The Slammer", ClubType.DRIVER);
+        assertNotNull(testClub);
+    }
+
+    @Test
     void testGetClubType()
     {
         Club testClub = new Club("John Doe", "The Slammer", ClubType.DRIVER);
@@ -52,10 +69,18 @@ public class ClubTest {
     }
 
     @Test
+    void testSetId()
+    {
+        Club testClub = new Club("John Doe", "The Slammer", ClubType.DRIVER);
+        testClub.setId(10);
+        assertThrows(AssertionError.class, () -> testClub.setId(5));
+    }
+
+    @Test
     void testToString()
     {
         Club testClub = new Club("John Doe", "The Slammer", ClubType.DRIVER);
-        String expectedString = "#0 The Slammer - John Doe (DRIVER)";
+        String expectedString = "#-1 The Slammer - John Doe (DRIVER)";
         assertEquals(expectedString, testClub.toString());
     }
 }
diff --git a/src/test/java/design/model/GolferTest.java b/src/test/java/design/model/GolferTest.java
index 65229f3..83ca17b 100644
--- a/src/test/java/design/model/GolferTest.java
+++ b/src/test/java/design/model/GolferTest.java
@@ -10,6 +10,7 @@ import org.junit.jupiter.api.Tag;
 import org.junit.jupiter.api.Test;
 
 import design.model.Club.ClubType;
+import design.model.undo.Memento;
 
 import java.lang.reflect.Constructor;
 import java.time.LocalDateTime;
@@ -35,10 +36,10 @@ public class GolferTest {
     @Test
     void testPrivateConstructor() throws Exception
     {
-        Constructor<Golfer> constructor = Golfer.class.getDeclaredConstructor(String.class, int.class, String.class, List.class, List.class, List.class);
+        Constructor<Golfer> constructor = Golfer.class.getDeclaredConstructor(String.class, int.class, String.class, List.class, List.class, List.class, List.class, Team.class);
         assertTrue(Modifier.isPrivate(constructor.getModifiers()));
         constructor.setAccessible(true);
-        Golfer testGolfer = constructor.newInstance("testUser", 12345, "Test Golfer", new ArrayList<>(), new ArrayList<>(), new ArrayList<>());
+        Golfer testGolfer = constructor.newInstance("testUser", 12345, "Test Golfer", new ArrayList<>(), new ArrayList<>(), new ArrayList<>(), new ArrayList<>(), null);
         assertNotNull(testGolfer);
     }
 
@@ -137,7 +138,16 @@ public class GolferTest {
         assertEquals(expectedString, testGolfer.toString());
     }
 
+    @Test
+    void testMemento()
+    {
+        Golfer testGolfer = new Golfer("John Doe", "jdoesgolf2", "weback4321");
+        Memento memento = testGolfer.createMemento();
+        testGolfer.setFullName("Joe Doe");
+        assertEquals("Joe Doe", testGolfer.getFullName());
+        testGolfer.restore(memento);
+        assertEquals("John Doe", testGolfer.getFullName());
+    }
 
 
-}
-
+}
\ No newline at end of file
diff --git a/src/test/java/design/model/HoleTest.java b/src/test/java/design/model/HoleTest.java
new file mode 100644
index 0000000..58aff49
--- /dev/null
+++ b/src/test/java/design/model/HoleTest.java
@@ -0,0 +1,55 @@
+package design.model;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+
+/** Tests for the hole model class.
+ * @author Willem Dalton
+ */
+@Tag("Model-tier")
+public class HoleTest {
+    
+    @Test
+    void testValidEquals()
+    {
+        Hole hole1 = new Hole(0, 10);
+        Hole hole2 = new Hole(0, 10);
+        assertTrue(hole1.equals(hole2));
+    }
+
+    @Test
+    void testNotAHole()
+    {
+        Hole hole1 = new Hole(0, 10);
+        String notAHole = "ImNotAHole!";
+        assertFalse(hole1.equals(notAHole));
+    }
+
+    @Test
+    void testNotEquals()
+    {
+        Hole hole1 = new Hole(0, 10);
+        Hole hole2 = new Hole(10, 999);
+        assertFalse(hole1.equals(hole2));
+    }
+
+    @Test
+    void testNotEqualPar()
+    {
+        Hole hole1 = new Hole(0, 10);
+        Hole hole2 = new Hole(0, 999);
+        assertFalse(hole1.equals(hole2));
+    }
+
+    @Test
+    void testNotEqualNumber()
+    {
+        Hole hole1 = new Hole(0, 10);
+        Hole hole2 = new Hole(10, 10);
+        assertFalse(hole1.equals(hole2));
+    }
+}
+
diff --git a/src/test/java/design/model/InviteTest.java b/src/test/java/design/model/InviteTest.java
new file mode 100644
index 0000000..29388a2
--- /dev/null
+++ b/src/test/java/design/model/InviteTest.java
@@ -0,0 +1,38 @@
+package design.model;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+
+import java.util.Date;
+
+/** Unit Tests for the Invite Class.
+ * @author Willem Dalton
+ **/
+@Tag("Model-tier")
+public class InviteTest {
+    @Test
+    void testConstructor()
+    {
+        Golfer testOwner = new Golfer("Jane Doe", "j_doe_rocks", "1234");
+        Team testTeam = new Team("A Team", testOwner);
+        Date testDate = new Date(123456);
+        Invite testInvite = new Invite(testTeam, testDate);
+
+        assertEquals(testTeam, testInvite.getTeam());
+        assertEquals(testDate, testInvite.getSendDate());
+    }
+
+    @Test
+    void testAccept()
+    {
+        Golfer testOwner = new Golfer("Jane Doe", "j_doe_rocks", "1234");
+        Golfer testInvitee = new Golfer("James Doe", "j_doe_is_cool", "54321");
+        Team testTeam = new Team("A Team", testOwner);
+        Date testDate = new Date(123456);
+        Invite testInvite = new Invite(testTeam, testDate);
+        testInvite.accept(testInvitee);
+        assertEquals(testInvitee, testTeam.getMembers()[0]);
+    }
+}
diff --git a/src/test/java/design/model/MatchTest.java b/src/test/java/design/model/MatchTest.java
new file mode 100644
index 0000000..c775c11
--- /dev/null
+++ b/src/test/java/design/model/MatchTest.java
@@ -0,0 +1,59 @@
+package design.model;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Modifier;
+import java.util.Date;
+import java.time.LocalDateTime;
+
+/** Unit Tests for the Match class.
+ * @author Willem Dalton
+ **/
+@Tag("Model-tier")
+public class MatchTest {
+    
+    @Test
+    void testConstructor()
+    {
+        Course testCourse = new Course(0, "Rolling Waves", 67, "Rochester. NY", 9, 30, new ArrayList<Hole>());
+        Date testDate = new Date(1234567);
+        LocalDateTime now = LocalDateTime.now();
+        Match testMatch = new Match(testCourse, testDate, now, now, 9);
+        assertEquals(testCourse, testMatch.getCourse());
+        assertEquals(testDate, testMatch.getDateScheduled());
+        assertEquals(now, testMatch.getStart());
+        assertEquals(9, testMatch.getHoleCount());
+    }
+
+    @Test
+    void testPrivateConstructor() throws Exception
+    {
+        Course testCourse = new Course(0, "Rolling Waves", 67, "Rochester. NY", 9, 30, new ArrayList<Hole>());
+        Constructor<Match> constructor = Match.class.getDeclaredConstructor(Course.class, Date.class, LocalDateTime.class, LocalDateTime.class, int.class, List.class);
+        assertTrue(Modifier.isPrivate(constructor.getModifiers()));
+        constructor.setAccessible(true);
+        Match testMatch = constructor.newInstance(testCourse, new Date(1234), LocalDateTime.now(), LocalDateTime.now(), 0, new ArrayList<>());
+        assertNotNull(testMatch);
+    }
+
+    @Test
+    void testAddRound()
+    {
+        Course testCourse = new Course(0, "Rolling Waves", 67, "Rochester. NY", 9, 30, new ArrayList<Hole>());
+        Date testDate = new Date(1234567);
+        LocalDateTime now = LocalDateTime.now();
+        Match testMatch = new Match(testCourse, testDate, now, now, 9);
+        Round testRound = new Round(testCourse, now, new Hole(0, 5));
+        testMatch.addRound(testRound);
+        assertEquals(testRound, testMatch.getRounds()[0]);
+        assertEquals(1, testMatch.getRounds().length);
+    }
+}
diff --git a/src/test/java/design/model/PlayTest.java b/src/test/java/design/model/PlayTest.java
new file mode 100644
index 0000000..0a27076
--- /dev/null
+++ b/src/test/java/design/model/PlayTest.java
@@ -0,0 +1,43 @@
+package design.model;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+
+import design.model.Club.ClubType;
+
+import java.util.ArrayList;
+
+/** Unit Tests for the Play class.
+ * @author Willem Dalton
+ **/
+@Tag("Model-tier")
+public class PlayTest {
+    @Test
+    void testConstructor()
+    {
+        Play testPlay = new Play(0);
+        assertEquals(0, testPlay.getHoleNumber());
+    }
+
+    @Test
+    void testConstructorNull()
+    {
+        Play testPlay2 = new Play(0, null);
+        assertEquals(0, testPlay2.getHoleNumber());
+        assertEquals(0, testPlay2.getSwings().length);
+    }
+
+    @Test
+    void testConstructorNotNull()
+    {
+        Club newClub = new Club("John Doe Inc", "The Slammer", ClubType.DRIVER);
+        Swing newSwing = new Swing(100, newClub);
+        ArrayList<Swing> swings = new ArrayList<Swing>();
+        swings.add(newSwing);
+        Play testPlay3 = new Play(0, swings);
+        assertEquals(0, testPlay3.getHoleNumber());
+        assertEquals(swings.get(0), testPlay3.getSwings()[0]);
+    }
+}
diff --git a/src/test/java/design/model/RoundTest.java b/src/test/java/design/model/RoundTest.java
index d472f5b..76d8f47 100644
--- a/src/test/java/design/model/RoundTest.java
+++ b/src/test/java/design/model/RoundTest.java
@@ -1,12 +1,19 @@
 package design.model;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import org.junit.jupiter.api.Tag;
 import org.junit.jupiter.api.Test;
 
+import design.model.Club.ClubType;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Modifier;
 import java.time.LocalDateTime;
 import java.util.ArrayList;
+import java.util.List;
 
 /** Unit Tests for the Round class.
  * @author Willem Dalton
@@ -27,6 +34,18 @@ public class RoundTest {
     }
 
     @Test
+    void testPrivateConstructor() throws Exception
+    {
+        Course testCourse = new Course(0, "Rolling Waves", 62, "Rochester, NY", 9, 20, new ArrayList<Hole>());
+        Constructor<Round> constructor = Round.class.getDeclaredConstructor(Course.class, LocalDateTime.class, Hole.class, List.class);
+        assertTrue(Modifier.isPrivate(constructor.getModifiers()));
+        constructor.setAccessible(true);
+        Round testRound = constructor.newInstance(testCourse, LocalDateTime.now(), new Hole(0, 0), new ArrayList<Play>());
+        assertNotNull(testRound);
+    }
+
+
+    @Test
     void testHolePlay()
     {
         Course testCourse = new Course(0, "Rolling Waves", 62, "Rochester, NY", 9, 20, new ArrayList<Hole>());
@@ -36,7 +55,38 @@ public class RoundTest {
         Play testPlay = new Play(0);
 
         testRound.addPlay(testPlay);
+
         assertEquals(1, testRound.getPlays().length);
         assertEquals(testPlay, testRound.getPlays()[0]);
+        assertEquals(0, testRound.getTotalSwings());
+
+        Club newClub = new Club("John Doe Inc", "The Slammer", ClubType.DRIVER);
+        Swing newSwing = new Swing(200, newClub);
+        
+        // try swinging, expect to see another swing added.
+        testPlay.addSwing(newSwing);
+
+        assertEquals(1, testRound.getTotalSwings());
+        assertEquals(200, testRound.getTotalDistance());
+    } 
+
+    @Test
+    void testProgressHole()
+    {
+        Hole testHole = new Hole(0,3);
+        Hole nextHole = new Hole(1, 5);
+
+        ArrayList<Hole> testHoles = new ArrayList<Hole>();
+        testHoles.add(testHole);
+        testHoles.add(nextHole);
+
+        Course testCourse = new Course(0, "Rolling Waves", 62, "Rochester, NY", 9, 20, testHoles);
+        LocalDateTime testTime = LocalDateTime.now();
+        Round testRound = new Round(testCourse, testTime, testHole);
+        
+        // progress a Hole and check value.
+        assertEquals(testHole, testRound.getCurrentHole());
+        testRound.nextHole();
+        assertEquals(nextHole, testRound.getCurrentHole());
     }
 }
diff --git a/src/test/java/design/model/ScrambleLeagueTest.java b/src/test/java/design/model/ScrambleLeagueTest.java
new file mode 100644
index 0000000..e8fe63c
--- /dev/null
+++ b/src/test/java/design/model/ScrambleLeagueTest.java
@@ -0,0 +1,89 @@
+package design.model;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Modifier;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+
+/** Tests for the scramble league model class.
+ * @author Willem Dalton
+ */
+@Tag("Model-tier")
+public class ScrambleLeagueTest {
+    
+    @Test
+    void testConstructor()
+    {
+        Date testStart = new Date(1234567);
+        Date testRegistration = new Date(1234568);
+        Date testEnd = new Date(12345679);
+        Golfer testOwner = new Golfer("Bobby", "bobby123", "iloveswen262");
+        ScrambleLeague testLeague = new ScrambleLeague("Bobby's Band", testRegistration, testStart, testEnd, testOwner);
+        assertEquals(-1, testLeague.getId());
+        assertEquals("Bobby's Band", testLeague.getName());
+        assertEquals(testRegistration, testLeague.getRegistrationDate());
+        assertEquals(testStart, testLeague.getStartDate());
+        assertEquals(testEnd, testLeague.getEndDate());
+        assertEquals(testOwner, testLeague.getOwner());
+    }
+    
+    @Test
+    void testPrivateConstructor() throws Exception
+    {
+        Golfer testOwner = new Golfer("Bobby", "bobby123", "iloveswen262");
+        Constructor<ScrambleLeague> constructor = ScrambleLeague.class.getDeclaredConstructor(int.class, String.class, Date.class, Date.class, Date.class, Golfer.class, List.class, List.class);
+        assertTrue(Modifier.isPrivate(constructor.getModifiers()));
+        constructor.setAccessible(true);
+        ScrambleLeague testLeague = constructor.newInstance(1, "Bobby's Band", new Date(), new Date(), new Date(), testOwner, new ArrayList<Team>(), new ArrayList<Match>());
+        assertNotNull(testLeague);
+    }
+
+    @Test
+    void testParticipants() throws Exception
+    {
+        Date testStart = new Date(1234567);
+        Date testRegistration = new Date(1234568);
+        Date testEnd = new Date(12345679);
+        Golfer testOwner = new Golfer("Bobby", "bobby123", "iloveswen262");
+        ScrambleLeague testLeague = new ScrambleLeague("Bobby's Band", testRegistration, testStart, testEnd, testOwner);
+        Team testTeam = new Team("The A Team", testOwner);
+
+        // add and remove participant
+        testLeague.addParticipants(testTeam);
+        assertEquals(testTeam, testLeague.getParticipants()[0]);
+        assertEquals(1, testLeague.getParticipants().length);
+        testLeague.removeParticipants(testTeam);
+        assertEquals(0, testLeague.getParticipants().length);
+    }
+
+    @Test
+    void testLocateTeam() throws Exception
+    {
+        Date testStart = new Date(1234567);
+        Date testRegistration = new Date(1234568);
+        Date testEnd = new Date(12345679);
+        Golfer testOwner = new Golfer("Bobby", "bobby123", "iloveswen262");
+        ScrambleLeague testLeague = new ScrambleLeague("Bobby's Band", testRegistration, testStart, testEnd, testOwner);
+
+        Team testTeam = new Team("The A Team", testOwner);
+        Golfer teamMember = new Golfer("Jane Doe", "jane_doe", "weback");
+        Golfer nonMember = new Golfer("NAN doe", "nan_doe", "wenotback");
+
+        // expect a result if member is part of team. expect null if they are not.
+        testTeam.addMember(teamMember);
+        testLeague.addParticipants(testTeam);
+        Team result = testLeague.locateTeam(teamMember);
+        assertEquals(result, testTeam);
+        result = testLeague.locateTeam(nonMember);
+        assertNull(result);
+    }
+}
diff --git a/src/test/java/design/model/StrokeLeagueTest.java b/src/test/java/design/model/StrokeLeagueTest.java
new file mode 100644
index 0000000..8af7561
--- /dev/null
+++ b/src/test/java/design/model/StrokeLeagueTest.java
@@ -0,0 +1,65 @@
+package design.model;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Modifier;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+
+/** Tests for the stroke league model class.
+ * @author Willem Dalton
+ */
+@Tag("Model-tier")
+public class StrokeLeagueTest {
+    
+    @Test
+    void testConstructor()
+    {
+        Date testStart = new Date(1234567);
+        Date testRegistration = new Date(1234568);
+        Date testEnd = new Date(12345679);
+        Golfer testOwner = new Golfer("Bobby", "bobby123", "iloveswen262");
+        StrokeLeague testLeague = new StrokeLeague("Bobby's Band", testRegistration, testStart, testEnd, testOwner);
+        assertEquals(-1, testLeague.getId());
+        assertEquals("Bobby's Band", testLeague.getName());
+        assertEquals(testRegistration, testLeague.getRegistrationDate());
+        assertEquals(testStart, testLeague.getStartDate());
+        assertEquals(testEnd, testLeague.getEndDate());
+        assertEquals(testOwner, testLeague.getOwner());
+    }
+    
+    @Test
+    void testPrivateConstructor() throws Exception
+    {
+        Golfer testOwner = new Golfer("Bobby", "bobby123", "iloveswen262");
+        Constructor<StrokeLeague> constructor = StrokeLeague.class.getDeclaredConstructor(int.class, String.class, Date.class, Date.class, Date.class, Golfer.class, List.class, List.class);
+        assertTrue(Modifier.isPrivate(constructor.getModifiers()));
+        constructor.setAccessible(true);
+        StrokeLeague testLeague = constructor.newInstance(1, "Bobby's Band", new Date(), new Date(), new Date(), testOwner, new ArrayList<Golfer>(), new ArrayList<Match>());
+        assertNotNull(testLeague);
+    }
+
+    @Test
+    void testParticipants() throws Exception
+    {
+        Date testStart = new Date(1234567);
+        Date testRegistration = new Date(1234568);
+        Date testEnd = new Date(12345679);
+        Golfer testOwner = new Golfer("Bobby", "bobby123", "iloveswen262");
+        StrokeLeague testLeague = new StrokeLeague("Bobby's Band", testRegistration, testStart, testEnd, testOwner);
+
+        // add and remove participant
+        testLeague.addParticipants(testOwner);
+        assertEquals(testOwner, testLeague.getParticipants()[0]);
+        assertEquals(1, testLeague.getParticipants().length);
+        testLeague.removeParticipants(testOwner);
+        assertEquals(0, testLeague.getParticipants().length);
+    }
+}
diff --git a/src/test/java/design/model/TeamTest.java b/src/test/java/design/model/TeamTest.java
new file mode 100644
index 0000000..c81aa1e
--- /dev/null
+++ b/src/test/java/design/model/TeamTest.java
@@ -0,0 +1,42 @@
+package design.model;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+
+/** Unit Tests for the Team Class.
+ * @author Willem Dalton
+ **/
+@Tag("Model-tier")
+public class TeamTest {
+    @Test
+    void testConstructor()
+    {
+        Golfer testGolfer = new Golfer("John Doe", "j_doe_golfs", "ilovegolf123");
+        Team testTeam = new Team("A Team", testGolfer);
+        assertEquals("A Team", testTeam.getName());
+        assertEquals(testGolfer, testTeam.getOwner());
+    }
+
+    @Test
+    void testSetName()
+    {
+        Golfer testGolfer = new Golfer("John Doe", "j_doe_golfs", "ilovegolf123");
+        Team testTeam = new Team("A Team", testGolfer);
+        testTeam.setName("B Team");
+        assertEquals("B Team", testTeam.getName());
+    }
+
+    @Test
+    void testRemoveMember()
+    {
+        Golfer testGolfer = new Golfer("John Doe", "j_doe_golfs", "ilovegolf123");
+        Golfer newGolfer = new Golfer("Jane Doe", "j_doe_golfs2", "ilovegolf321");
+        Team testTeam = new Team("A Team", testGolfer);
+        testTeam.addMember(newGolfer);
+        assertEquals(1, testTeam.getMembers().length);
+        testTeam.removeMember(newGolfer);
+        assertEquals(0, testTeam.getMembers().length);
+    }
+}
diff --git a/src/test/java/design/model/coursesearch/CourseListTest.java b/src/test/java/design/model/coursesearch/CourseListTest.java
index 7538ba5..6bc5529 100644
--- a/src/test/java/design/model/coursesearch/CourseListTest.java
+++ b/src/test/java/design/model/coursesearch/CourseListTest.java
@@ -1,18 +1,19 @@
 package design.model.coursesearch;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertTrue;
-import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
 
 import org.junit.jupiter.api.Tag;
 import org.junit.jupiter.api.Test;
 import java.util.ArrayList;
+import design.model.course_search.ICourse;
 
 import design.model.course_search.*;
 import design.model.Course;
 
 
-/** Unit Tests for the Club class.
+/** Unit Tests for the Course List class.
  * @author Willem Dalton
  **/
 @Tag("Model-tier")
@@ -22,6 +23,61 @@ public class CourseListTest {
     void testConstructor()
     {
         CourseList testList = new CourseList();
+        assertNotNull(testList);
+    }
+
+    @Test
+    void testSetCourses()
+    {
+        CourseList testList = new CourseList();
+        Course testCourse1 = new Course(0, "Rolling Waves", 10, "Rochester, NY", 0, 0, null);
+        Course testCourse2 = new Course(1, "Arcadia Hills", 10, "Rochester, NY", 0, 0, null);
+        ArrayList<ICourse> courses = new ArrayList<ICourse>();
+        courses.add(testCourse1);
+        courses.add(testCourse2);
+        testList.setCourses(courses);
+        assertEquals(courses, testList.getCourses());
+    }
 
+    @Test
+    void testSort()
+    {
+        CourseList testList = new CourseList();
+        Course testCourse1 = new Course(0, "Rolling Waves", 10, "Rochester, NY", 0, 0, null);
+        Course testCourse2 = new Course(1, "Arcadia Hills", 10, "Rochester, NY", 0, 0, null);
+        ArrayList<ICourse> courses = new ArrayList<ICourse>();
+        courses.add(testCourse1);
+        courses.add(testCourse2);
+        testList.setCourses(courses);
+        SortByName sorter = new SortByName();
+        testList.setSorter(sorter);
+        testList.sort();
+        assertEquals(testCourse2, testList.getCourses().get(0));
+        assertEquals(testCourse1, testList.getCourses().get(1));
+    }
+
+    @Test
+    void testAddRemove()
+    {
+        CourseList testList = new CourseList();
+        Course testCourse1 = new Course(0, "Rolling Waves", 10, "Rochester, NY", 0, 0, null);
+        testList.add(testCourse1);
+        assertEquals(testCourse1, testList.getCourses().get(0));
+        assertEquals(1, testList.getCourses().size());
+        testList.remove(testCourse1);
+        assertEquals(0, testList.getCourses().size());
+    }
+
+    @Test
+    void testOverrides()
+    {
+        CourseList testList = new CourseList();
+        assertEquals("Course List", testList.getName());
+        assertEquals("Course List", testList.toString());
+        assertEquals(0, testList.getDifficultyRating());
+        assertEquals("", testList.getLocation());
+        assertEquals(0, testList.getTotalPar());
+        assertEquals(0, testList.getHoleCount());
+        assertNull(testList.getHoles());
     }
 }
diff --git a/src/test/java/design/model/coursesearch/CurrentSearchQueryTest.java b/src/test/java/design/model/coursesearch/CurrentSearchQueryTest.java
new file mode 100644
index 0000000..10f3f87
--- /dev/null
+++ b/src/test/java/design/model/coursesearch/CurrentSearchQueryTest.java
@@ -0,0 +1,27 @@
+package design.model.coursesearch;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+import java.util.ArrayList;
+
+import design.model.course_search.*;
+import design.model.Course;
+
+/** Unit Tests for the Current Search Query Class
+ * @author Willem Dalton
+ **/
+@Tag("Model-tier")
+public class CurrentSearchQueryTest {
+    
+    // @Test
+    // void testReset()
+    // {
+    //     CurrentSearchQuery query
+    // }
+
+    
+}
diff --git a/src/test/java/design/model/coursesearch/sortStrategyTest.java b/src/test/java/design/model/coursesearch/sortStrategyTest.java
index aecbeff..35fa335 100644
--- a/src/test/java/design/model/coursesearch/sortStrategyTest.java
+++ b/src/test/java/design/model/coursesearch/sortStrategyTest.java
@@ -11,10 +11,11 @@ import java.util.ArrayList;
 import design.model.course_search.*;
 import design.model.Course;
 
-/** Unit Tests for the Difficulty Sorter class
+/** Unit Tests for the Sorter Strategy classes
  * @author Willem Dalton
  **/
-public class sortStrategyTest {
+@Tag("Model-tier")
+public class SortStrategyTest {
 
     Course test1 = new Course(0, "Rolling Waves", 67, "Rochester, NY", 9, 30, null);
     Course test2 = new Course(1, "Balls in the Rough", 60, "Buffalo, NY", 18, 60, null);
@@ -25,7 +26,7 @@ public class sortStrategyTest {
     void testDifficultySort()
     {
         SortByDifficulty sorter = new SortByDifficulty();
-        ArrayList<ICourse> courses = new ArrayList();
+        ArrayList<ICourse> courses = new ArrayList<ICourse>();
         courses.add(test1);
         courses.add(test2);
         sorter.sortCourses(courses);
@@ -38,7 +39,7 @@ public class sortStrategyTest {
     void testNameSort()
     {
         SortByName sorter = new SortByName();
-        ArrayList<ICourse> courses = new ArrayList();
+        ArrayList<ICourse> courses = new ArrayList<ICourse>();
         courses.add(test1);
         courses.add(test4);
         sorter.sortCourses(courses);
@@ -51,7 +52,7 @@ public class sortStrategyTest {
     void testLocationSort()
     {
         SortByLocation sorter = new SortByLocation();
-        ArrayList<ICourse> courses = new ArrayList();
+        ArrayList<ICourse> courses = new ArrayList<ICourse>();
         courses.add(test1);
         courses.add(test4);
         sorter.sortCourses(courses);
@@ -64,7 +65,7 @@ public class sortStrategyTest {
     void testParSort()
     {
         SortByPar sorter = new SortByPar();
-        ArrayList<ICourse> courses = new ArrayList();
+        ArrayList<ICourse> courses = new ArrayList<ICourse>();
         courses.add(test1);
         courses.add(test4);
         sorter.sortCourses(courses);
@@ -77,7 +78,7 @@ public class sortStrategyTest {
     void testHoleSort()
     {
         SortByHoles sorter = new SortByHoles();
-        ArrayList<ICourse> courses = new ArrayList();
+        ArrayList<ICourse> courses = new ArrayList<ICourse>();
         courses.add(test1);
         courses.add(test4);
         sorter.sortCourses(courses);
diff --git a/src/test/java/design/model/holeplay/HolePlayContextTest.java b/src/test/java/design/model/holeplay/HolePlayContextTest.java
index de0f1e9..c2ca619 100644
--- a/src/test/java/design/model/holeplay/HolePlayContextTest.java
+++ b/src/test/java/design/model/holeplay/HolePlayContextTest.java
@@ -1,5 +1,74 @@
 package design.model.holeplay;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+
+import java.util.Date;
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+
+import design.model.Golfer;
+import design.model.Round;
+import design.model.Club.ClubType;
+import design.persistence.PersonalDatabase;
+import design.model.Course;
+import design.model.Hole;
+import design.model.Club;
+
+/** Unit Tests for the HolePlayContext Class.
+ * @author Willem Dalton
+ **/
+@Tag("Model-tier")
 public class HolePlayContextTest {
 
+    @Test
+    void testConstructor()
+    {
+        Golfer testGolfer = new Golfer("John Doe", "j_doe", "weback");
+        Course testCourse = new Course(0, "Rolling Waves", 67, "Rochester, NY", 0, 0, new ArrayList<Hole>());
+        Round testRound = new Round(testCourse, LocalDateTime.now(), new Hole(0, 10));
+        HolePlayContext testContext = new HolePlayContext(testGolfer, testRound, PersonalDatabase.instance());
+        assertEquals(testGolfer, testContext.getGolfer());
+        assertEquals(testRound, testContext.getRound());
+    }
+
+    @Test
+    void testPlay()
+    {
+        Golfer testGolfer = new Golfer("John Doe", "j_doe", "weback");
+        Course testCourse = new Course(0, "Rolling Waves", 67, "Rochester, NY", 0, 0, new ArrayList<Hole>());
+        Round testRound = new Round(testCourse, LocalDateTime.now(), new Hole(0, 10));
+        HolePlayContext testContext = new HolePlayContext(testGolfer, testRound, PersonalDatabase.instance());
+        testContext.beginNewPlay(0);
+        Club testClub = new Club("John Doe Inc", "The Slammer", ClubType.DRIVER);
+        testContext.addSwing(testClub, 100);
+        assertEquals(1, testContext.getCurrentPlay().getSwingCount());
+        assertEquals(100, testContext.getCurrentPlay().getDistance());
+    }
+
+    @Test
+    void testPlayNull()
+    {
+        Golfer testGolfer = new Golfer("John Doe", "j_doe", "weback");
+        Course testCourse = new Course(0, "Rolling Waves", 67, "Rochester, NY", 0, 0, new ArrayList<Hole>());
+        Round testRound = new Round(testCourse, LocalDateTime.now(), new Hole(0, 10));
+        HolePlayContext testContext = new HolePlayContext(testGolfer, testRound, PersonalDatabase.instance());
+        testContext.beginNewPlay(0);
+        Club testClub = new Club("John Doe Inc", "The Slammer", ClubType.DRIVER);
+        testContext.addSwing(testClub, null);
+        assertEquals(1, testContext.getCurrentPlay().getSwingCount());
+        assertEquals(0, testContext.getCurrentPlay().getDistance());
+    }
+
+    // @Test
+    // void testHolePlay()
+    // {
+    //     Golfer testGolfer = new Golfer("John Doe", "j_doe", "weback");
+    //     Course testCourse = new Course(0, "Rolling Waves", 67, "Rochester, NY", 0, 0, new ArrayList<Hole>());
+    //     Round testRound = new Round(testCourse, LocalDateTime.now(), new Hole(0, 10));
+    //     HolePlayContext testContext = new HolePlayContext(testGolfer, testRound, PersonalDatabase.instance());
+    //     testContext.startHole();
+    // }
 }
\ No newline at end of file
diff --git a/src/test/java/design/model/statistics/StatisticsTest.java b/src/test/java/design/model/statistics/StatisticsTest.java
new file mode 100644
index 0000000..e68796a
--- /dev/null
+++ b/src/test/java/design/model/statistics/StatisticsTest.java
@@ -0,0 +1,180 @@
+package design.model.statistics;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.Arrays;
+
+import design.model.Course;
+import design.model.Golfer;
+import design.model.Hole;
+import design.model.Round;
+import design.model.Club.ClubType;
+import design.model.Play;
+import design.model.Club;
+import design.model.Swing;
+
+/** Unit Tests for the Statistics Subsystem
+ * @author Willem Dalton
+ **/
+@Tag("Model-tier")
+public class StatisticsTest {
+
+    /* base stats wrapper for testing purposes */
+    private static class StubStatistics implements Statistics {
+        private final Golfer golfer;
+
+        public StubStatistics(Golfer golfer) {
+            this.golfer = golfer;
+        }
+
+        @Override
+        public Round[] getRounds() {
+            return golfer.getRounds();
+        }
+
+        @Override
+        public int get_score() {
+            return Arrays.stream(getRounds())
+                         .mapToInt(Round::getTotalSwings)
+                         .sum();
+        }
+
+        @Override
+        public double get_distance() {
+            return Arrays.stream(getRounds())
+                         .mapToDouble(Round::getTotalDistance)
+                         .sum();
+        }
+    }
+
+    @Test
+    void testLifeTime()
+    {
+        Golfer testGolfer = new Golfer("John Doe", "j_doe", "weback");
+        Course testCourse = new Course(0, "Rolling Waves", 67, "Rochester, NY", 0, 0, new ArrayList<Hole>());
+        Round testRound = new Round(testCourse, LocalDateTime.now(), new Hole(0, 10));
+        Swing testSwing = new Swing(100, new Club("John Doe Inc", "The Slammer", ClubType.DRIVER));
+        LifetimeStats stats = new LifetimeStats(testGolfer);
+
+        assertNotNull(stats);
+        assertEquals(0, stats.get_score());
+        assertEquals(0, stats.get_distance());
+
+        ArrayList<Swing> testSwings = new ArrayList<Swing>();
+        testSwings.add(testSwing);
+        Play testPlay = new Play(0, testSwings);
+        testRound.addPlay(testPlay);
+        testGolfer.addRound(testRound);
+
+        assertEquals(1, stats.get_score());
+        assertEquals(100, stats.get_distance());
+    }
+
+    @Test
+    void testYearly()
+    {
+        Golfer testGolfer = new Golfer("John Doe", "j_doe", "weback");
+        Course testCourse = new Course(0, "Rolling Waves", 67, "Rochester, NY", 0, 0, new ArrayList<Hole>());
+        Round testRound = new Round(testCourse, LocalDateTime.now(), new Hole(0, 10));
+        Swing testSwing = new Swing(100, new Club("John Doe Inc", "The Slammer", ClubType.DRIVER));
+        
+        Statistics wrapper = new StubStatistics(testGolfer);
+        YearlyStats stats = new YearlyStats(wrapper, 2025);
+
+        assertNotNull(stats);
+        assertEquals(0, stats.get_score());
+        assertEquals(0, stats.get_distance());
+        
+        ArrayList<Swing> testSwings = new ArrayList<Swing>();
+        testSwings.add(testSwing);
+        Play testPlay = new Play(0, testSwings);
+        testRound.addPlay(testPlay);
+        testGolfer.addRound(testRound);
+
+        assertEquals(1, stats.get_score());
+        assertEquals(100, stats.get_distance());
+    }
+
+    @Test
+    void testCourse()
+    {
+        Golfer testGolfer = new Golfer("John Doe", "j_doe", "weback");
+        Course testCourse = new Course(0, "Rolling Waves", 67, "Rochester, NY", 0, 0, new ArrayList<Hole>());
+        Round testRound = new Round(testCourse, LocalDateTime.now(), new Hole(0, 10));
+        Swing testSwing = new Swing(100, new Club("John Doe Inc", "The Slammer", ClubType.DRIVER));
+        
+        Statistics wrapper = new StubStatistics(testGolfer);
+        CourseStats stats = new  CourseStats(wrapper, testCourse);
+
+        assertNotNull(stats);
+        assertEquals(0, stats.get_score());
+        assertEquals(0, stats.get_distance());
+        
+        ArrayList<Swing> testSwings = new ArrayList<Swing>();
+        testSwings.add(testSwing);
+        Play testPlay = new Play(0, testSwings);
+        testRound.addPlay(testPlay);
+        testGolfer.addRound(testRound);
+
+        assertEquals(1, stats.get_score());
+        assertEquals(100, stats.get_distance());
+    }
+
+    @Test
+    void testRound()
+    {
+        Golfer testGolfer = new Golfer("John Doe", "j_doe", "weback");
+        Course testCourse = new Course(0, "Rolling Waves", 67, "Rochester, NY", 0, 0, new ArrayList<Hole>());
+        Round testRound = new Round(testCourse, LocalDateTime.now(), new Hole(0, 10));
+        Swing testSwing = new Swing(100, new Club("John Doe Inc", "The Slammer", ClubType.DRIVER));
+        
+        Statistics wrapper = new StubStatistics(testGolfer);
+        RoundStats stats = new RoundStats(wrapper, testRound);
+
+        assertNotNull(stats);
+        assertEquals(0, stats.get_score());
+        assertEquals(0, stats.get_distance());
+        
+        ArrayList<Swing> testSwings = new ArrayList<Swing>();
+        testSwings.add(testSwing);
+        Play testPlay = new Play(0, testSwings);
+        testRound.addPlay(testPlay);
+        testGolfer.addRound(testRound);
+
+        assertEquals(1, stats.get_score());
+        assertEquals(100, stats.get_distance());
+    }
+
+    @Test
+    void testHole()
+    {
+        Golfer testGolfer = new Golfer("John Doe", "j_doe", "weback");
+        Course testCourse = new Course(0, "Rolling Waves", 67, "Rochester, NY", 0, 0, new ArrayList<Hole>());
+        Round testRound = new Round(testCourse, LocalDateTime.now(), new Hole(0, 10));
+        Swing testSwing = new Swing(100, new Club("John Doe Inc", "The Slammer", ClubType.DRIVER));
+        Hole testHole = new Hole(0, 10);
+
+        Statistics wrapper = new StubStatistics(testGolfer);
+        HoleStats stats = new HoleStats(wrapper, testHole);
+
+        assertNotNull(stats);
+        assertEquals(0, stats.get_score());
+        assertEquals(0, stats.get_distance());
+        
+        ArrayList<Swing> testSwings = new ArrayList<Swing>();
+        testSwings.add(testSwing);
+        Play testPlay = new Play(0, testSwings);
+        testRound.addPlay(testPlay);
+        testGolfer.addRound(testRound);
+
+        assertEquals(1, stats.get_score());
+        assertEquals(100, stats.get_distance());
+        assertEquals(0, stats.getRounds().length);
+    }
+}
diff --git a/src/test/java/design/persistence/CSVMasterDatabaseTest.java b/src/test/java/design/persistence/CSVMasterDatabaseTest.java
new file mode 100644
index 0000000..4c78800
--- /dev/null
+++ b/src/test/java/design/persistence/CSVMasterDatabaseTest.java
@@ -0,0 +1,33 @@
+package design.persistence;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+
+/** Unit Tests for the CSV Master Database Singleton class.
+ * @author Willem Dalton
+ **/
+@Tag("Persistence-tier")
+public class CSVMasterDatabaseTest {
+    
+    @Test 
+    void testInstance()
+    {
+        CSVMasterDatabase instance = CSVMasterDatabase.instance();
+        assertNotNull(instance);
+        CSVMasterDatabase instance2 = CSVMasterDatabase.instance();
+        assertNotNull(instance2);
+    }
+
+    @Test
+    void testGetCourses()
+    {
+        CSVMasterDatabase instance = CSVMasterDatabase.instance();
+        String expectedResult = "Mountain View Links (Mobile, AL) | Holes: 18 | Total Par: 70 | Difficulty: 73.0";
+        assertEquals(1000, instance.getCourses().length);
+        assertNotNull(instance.getCourseList());
+        assertEquals(expectedResult, instance.getCourse(0).toString());
+    }
+}
diff --git a/src/test/java/design/persistence/JSONLeagueDatabaseTest.java b/src/test/java/design/persistence/JSONLeagueDatabaseTest.java
new file mode 100644
index 0000000..f211670
--- /dev/null
+++ b/src/test/java/design/persistence/JSONLeagueDatabaseTest.java
@@ -0,0 +1,75 @@
+package design.persistence;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.Date;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+
+import design.model.League;
+import design.model.StrokeLeague;
+import design.model.Course;
+import design.model.Golfer;
+import design.model.Hole;
+import design.model.Match;
+
+/** Unit Tests for the JSON Personal Database Singleton
+ * @author Willem Dalton
+ **/
+@Tag("Persistence-tier")
+public class JSONLeagueDatabaseTest {
+    Path tempDB;
+
+    @BeforeEach
+    void clearDB() throws IOException
+    {
+        tempDB = Files.createTempFile("testleaguedb", ".json");
+        Files.writeString(tempDB, "[]");
+        JSONLeagueDatabase.testInstance(tempDB.toString());
+    }
+    
+    @Test 
+    void testInstance()
+    {
+        JSONLeagueDatabase instance = JSONLeagueDatabase.instance(); // makes new instance
+        assertNotNull(instance);
+        JSONLeagueDatabase instance2 = JSONLeagueDatabase.instance(); // instance already exists
+        assertNotNull(instance2);
+    }
+
+    @Test
+    void testAddRemove() throws IOException
+    {
+        JSONLeagueDatabase instance = JSONLeagueDatabase.testInstance(tempDB.toString()); // makes new instance
+        Golfer testOwner = new Golfer("Jamie Doe", "joe_cool", "12345");
+        League testLeague = new StrokeLeague("The A Team", new Date(1234), new Date(123), new Date(12345), testOwner);
+        instance.addLeague(testLeague);
+        assertEquals(1, instance.getLeagues().length);
+        assertEquals(testLeague, instance.getLeagues()[0]);
+        instance.removeLeague(testLeague);
+        assertEquals(0, instance.getLeagues().length);
+    }
+
+    @Test
+    void testUpdateGolfer() throws IOException
+    {
+        JSONLeagueDatabase instance = JSONLeagueDatabase.testInstance(tempDB.toString()); // makes new instance
+        Golfer testOwner = new Golfer("Jamie Doe", "joe_cool", "12345");
+        League testLeague = new StrokeLeague("The A Team", new Date(1234), new Date(123), new Date(12345), testOwner);
+        instance.addLeague(testLeague);
+        Course testCourse = new Course(0, "Rolling Waves", 62, "Rochester, NY", 9, 20, new ArrayList<Hole>());
+        Match testMatch = new Match(testCourse, new Date(123), LocalDateTime.now(), LocalDateTime.now(), 3);
+        testLeague.addMatchToSchedule(testMatch);
+        instance.updateLeague(testLeague);
+        assertEquals(testLeague, instance.getLeague(testLeague.getId()));
+    }
+}
diff --git a/src/test/java/design/persistence/JSONPersonalDatabaseTest.java b/src/test/java/design/persistence/JSONPersonalDatabaseTest.java
new file mode 100644
index 0000000..21cc366
--- /dev/null
+++ b/src/test/java/design/persistence/JSONPersonalDatabaseTest.java
@@ -0,0 +1,62 @@
+package design.persistence;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+
+import design.model.Golfer;
+
+/** Unit Tests for the JSON Personal Database Singleton
+ * @author Willem Dalton
+ **/
+@Tag("Persistence-tier")
+public class JSONPersonalDatabaseTest {
+    Path tempDB;
+
+    @BeforeEach
+    void clearDB() throws IOException
+    {
+        tempDB = Files.createTempFile("testdb", ".json");
+        Files.writeString(tempDB, "[]");
+        JSONPersonalDatabase.testInstance(tempDB.toString());
+    }
+    
+    @Test 
+    void testInstance()
+    {
+        JSONPersonalDatabase instance = JSONPersonalDatabase.instance(); // makes new instance
+        assertNotNull(instance);
+        JSONPersonalDatabase instance2 = JSONPersonalDatabase.instance(); // instance already exists
+        assertNotNull(instance2);
+    }
+
+    @Test
+    void testAddRemove() throws IOException
+    {
+        JSONPersonalDatabase instance = JSONPersonalDatabase.testInstance(tempDB.toString()); // makes new instance
+        Golfer testGolfer = new Golfer("Jamie Doe", "joe_cool", "12345");
+        instance.addGolfer(testGolfer);
+        assertEquals(testGolfer, instance.getGolfer("joe_cool"));
+        instance.removeGolfer(testGolfer);
+        assertEquals(null, instance.getGolfer("joe_cool"));
+    }
+
+    @Test
+    void testUpdateGolfer() throws IOException
+    {
+        JSONPersonalDatabase instance = JSONPersonalDatabase.testInstance(tempDB.toString()); // makes new instance
+        Golfer testGolfer = new Golfer("Jamie Doe", "joe_cool", "12345");
+        instance.addGolfer(testGolfer);
+        testGolfer.setUsername("joe_super_cool");
+        instance.updateGolfer(testGolfer);
+        assertEquals(testGolfer, instance.getGolfer("joe_super_cool"));
+    }
+}