make better thunk test

Signed-off-by: Xe Iaso <me@christine.website>

thunk.go

@@ -15,8 +15,8 @@ package gonads
 // In this example, `addTwo` is a thunk that contains a partially applied addCurr
 // invocation.
 type Thunk[T any] struct {
-	doer func() T // action being thunked
-	o    Option[T] // cache for complete thunk data
+	doer func() T   // action being thunked
+	o    *Option[T] // cache for complete thunk data
 }
 
 // Force evaluates a Thunk's action if it needs to, otherwise it returns the
@@ -29,3 +29,10 @@ func (t Thunk[T]) Force() T {
 	t.o.Set(t.doer())
 	return t.o.Yank()
 }
+
+func NewThunk[T any](doer func() T) *Thunk[T] {
+	return &Thunk[T]{
+		doer: doer,
+		o:    NewOption[T](),
+	}
+}

thunk_test.go

@@ -16,9 +16,7 @@ func TestRecurFib(t *testing.T) {
 }
 
 func TestThunkFib(t *testing.T) {
-	cache := make([]Thunk[int], 41)
-	cache[0].o.Set(0)
-	cache[1].o.Set(1)
+	cache := make([]*Thunk[int], 41)
 
 	var fib func(int) int
 	fib = func(n int) int {
@@ -30,8 +28,14 @@ func TestThunkFib(t *testing.T) {
 	
 	for i := range cache {
 		i := i
-		cache[i].doer = func() int { return fib(i) }
+		cache[i] = NewThunk(func() int { return fib(i) })
 	}
+	cache[0].o.Set(0)
+	cache[1].o.Set(1)
 
 	t.Log(cache[40].Force())
 }
+
+func TestThunkDelay(t *testing.T) {
+	
+}