diff --git a/rooms/room.go b/rooms/room.go
index e549862..e081610 100644
--- a/rooms/room.go
+++ b/rooms/room.go
@@ -2,6 +2,7 @@ package rooms
 
 import (
 	"log"
+	"maps"
 	"slices"
 )
 
@@ -130,6 +131,22 @@ func (r *Room) gestureSearchStartIndex(gesture, curSpeakerGesture HandGesture) i
 	return indexFromWhichToStart
 }
 
+func (r *Room) Equal(other *Room) bool {
+	if r == other {
+		return true
+	}
+	if r.Name != other.Name || r.PasswordHash != other.PasswordHash || r.CurrentSpeaker != other.CurrentSpeaker {
+		return false
+	}
+	if !slices.Equal(r.AdminIds, other.AdminIds) || !slices.Equal(r.Paricipants, other.Paricipants) {
+		return false
+	}
+	if !maps.Equal(r.ParticipantHands, other.ParticipantHands) || !maps.Equal(r.Marks, other.Marks) {
+		return false
+	}
+	return true
+}
+
 // sooooooo. i need hand types. are there enums in go?
 type HandGesture uint8
 
diff --git a/rooms/room_release_hand_test.go b/rooms/room_release_hand_test.go
new file mode 100644
index 0000000..cc5fc96
--- /dev/null
+++ b/rooms/room_release_hand_test.go
@@ -0,0 +1,64 @@
+package rooms
+
+import (
+	"testing"
+)
+
+type releaseHandTest struct {
+	room, expected         Room
+	releasingParticipantId PersonId
+}
+
+var releaseHandTests = []releaseHandTest{
+	singleHandActive,
+}
+
+func TestRoomReleaseHand(t *testing.T) {
+	for _, test := range releaseHandTests {
+		test.room.InitMaps()
+		test.expected.InitMaps()
+		if test.room.ReleaseHand(test.releasingParticipantId); !test.room.Equal(&test.expected) {
+			t.Errorf("Output \n%+v \nnot equal to expected \n%+v", test.room, test.expected)
+		}
+	}
+}
+
+var p1Id = PersonId(1)
+var p2Id = PersonId(2)
+var singleHandActive releaseHandTest = releaseHandTest{
+	room : Room{
+		Name: "test",
+		CurrentSpeaker: p1Id,
+		Paricipants: []Person{
+			{
+				Id : p1Id,
+				Name: "p1",
+			},
+			{
+				Id : PersonId(2),
+				Name: "p2",
+			},
+		},
+		ParticipantHands: map[PersonId]HandGesture{
+			p1Id: Expand,
+		},
+	},
+	releasingParticipantId: p1Id,
+	expected: Room{
+		Name: "test",
+		CurrentSpeaker: PersonId(0),
+		Paricipants: []Person{
+			{
+				Id : p1Id,
+				Name: "p1",
+			},
+			{
+				Id : PersonId(2),
+				Name: "p2",
+			},
+		},
+		ParticipantHands: map[PersonId]HandGesture{
+		},
+	},
+
+}