Add method to zombie to print out the current location

models/zombie.go

@@ -1,5 +1,7 @@
 package models
 
+import "fmt"
+
 const (
 	minimumValueOnAXis = 0
 )
@@ -56,6 +58,11 @@ func (zombie *Zombie) MoveRight() {
 	zombie.Coordinate.XAxis--
 }
 
+// PrintLocation prints out the current coordinate
+func (zombie *Zombie) PrintLocation() string {
+	return fmt.Sprintf("(%d,%d)", zombie.Coordinate.XAxis, zombie.Coordinate.YAxis)
+}
+
 func (zombie *Zombie) maxValueOnAxis() int {
 	return zombie.GridSize - 1
 }

models/zombie_test.go

@@ -111,7 +111,6 @@ func TestZombie_MoveDown(t *testing.T) {
 	}
 }
 
-
 func TestZombie_MoveLeft(t *testing.T) {
 	type fields struct {
 		GridSize   int
@@ -165,7 +164,6 @@ func TestZombie_MoveLeft(t *testing.T) {
 	}
 }
 
-
 func TestZombie_MoveRight(t *testing.T) {
 	type fields struct {
 		GridSize   int
@@ -218,3 +216,38 @@ func TestZombie_MoveRight(t *testing.T) {
 		})
 	}
 }
+
+func TestZombie_PrintLocation(t *testing.T) {
+	type fields struct {
+		GridSize   int
+		Coordinate Coordinate
+	}
+	tests := []struct {
+		name   string
+		fields fields
+		want   string
+	}{
+		{
+			"can print out the zombie's location",
+			fields{
+				4,
+				Coordinate{
+					2,
+					3,
+				},
+			},
+			"(2,3)",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			zombie := &Zombie{
+				GridSize:   tt.fields.GridSize,
+				Coordinate: tt.fields.Coordinate,
+			}
+			if got := zombie.PrintLocation(); got != tt.want {
+				t.Errorf("PrintLocation() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}