put iterator in separate source file; rename tests (unit->lib)

lib/funky/funky.go

@@ -29,34 +29,3 @@ func (m *maybe[V]) IsNothing() bool {
 func (m *maybe[V]) Value() V {
 	return m.value
 }
-
-// Iterator
-
-type Iterator[V any] interface {
-	Next() Maybe[V]
-}
-
-type sliceIt[V any] struct {
-	idx   int
-	slice []V
-}
-
-func SliceIterator[V any](sl []V) Iterator[V] {
-	return &sliceIt[V]{-1, sl}
-}
-
-func (it *sliceIt[V]) Next() Maybe[V] {
-	if it.idx >= len(it.slice)-1 {
-		return Nothing[V]()
-	}
-	it.idx++
-	return Just(it.slice[it.idx])
-}
-
-func Slice[V any](it Iterator[V]) []V {
-	var out []V
-	for m := it.Next(); !m.IsNothing(); m = it.Next() {
-		out = append(out, m.Value())
-	}
-	return out
-}

lib/funky/iterator.go

@@ -0,0 +1,30 @@
+package funky
+
+type Iterator[V any] interface {
+	Next() Maybe[V]
+}
+
+type sliceIt[V any] struct {
+	idx   int
+	slice []V
+}
+
+func SliceIterator[V any](sl []V) Iterator[V] {
+	return &sliceIt[V]{-1, sl}
+}
+
+func (it *sliceIt[V]) Next() Maybe[V] {
+	if it.idx >= len(it.slice)-1 {
+		return Nothing[V]()
+	}
+	it.idx++
+	return Just(it.slice[it.idx])
+}
+
+func Slice[V any](it Iterator[V]) []V {
+	var out []V
+	for m := it.Next(); !m.IsNothing(); m = it.Next() {
+		out = append(out, m.Value())
+	}
+	return out
+}

tests/lib_test.go

@@ -13,7 +13,7 @@ import (
 	"git.sr.ht/~cco/go-scopes/testing"
 )
 
-func TestUnit(tb *tbase.T) {
+func TestLib(tb *tbase.T) {
 	t := testing.SetUp(tb)
 	t.Run("address", AddressTest)
 	t.Run("message", MessageTest)