Write root menu to writer (not stdout) in engine loop

go/engine/loop.go

@@ -2,7 +2,7 @@ package engine
 
 import (
 	"bufio"
-	"bytes"
+//	"bytes"
 	"context"
 	"fmt"
 	"io"
@@ -16,9 +16,11 @@ func Loop(en *Engine, startSym string, ctx context.Context, reader io.Reader, wr
 		return fmt.Errorf("cannot init: %v\n", err)
 	}
 
-	b := bytes.NewBuffer(nil)
-	en.WriteResult(b, ctx)
-	fmt.Println(b.String())
+	//b := bytes.NewBuffer(nil)
+	//en.WriteResult(b, ctx)
+	en.WriteResult(writer, ctx)
+	writer.Write([]byte{0x0a})
+	//fmt.Println(b.String())
 
 	running := true
 	bufReader := bufio.NewReader(reader)
@@ -36,12 +38,12 @@ func Loop(en *Engine, startSym string, ctx context.Context, reader io.Reader, wr
 		if err != nil {
 			return fmt.Errorf("unexpected termination: %v\n", err)
 		}
-		//b := bytes.NewBuffer(nil)
 		err = en.WriteResult(writer, ctx)
 		if err != nil {
 			return err
 		}
 		writer.Write([]byte{0x0a})
+
 	}
 	return nil
 }

go/engine/loop_test.go

@@ -13,6 +13,39 @@ import (
 	"git.defalsify.org/festive/state"
 )
 
+func TestLoopTop(t *testing.T) {
+	generateTestData(t)
+	ctx := context.TODO()
+	st := state.NewState(0)
+	rs := resource.NewFsResource(dataDir)
+	ca := cache.NewCache().WithCacheSize(1024)
+	
+	en := NewEngine(Config{}, &st, &rs, ca)
+	err := en.Init("root", ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	input := []string{
+		"2",
+		"j",
+		"1",
+		}		
+	inputStr := strings.Join(input, "\n")
+	inputBuf := bytes.NewBuffer(append([]byte(inputStr), 0x0a))
+	outputBuf := bytes.NewBuffer(nil)
+	log.Printf("running with input: %s", inputBuf.Bytes())
+
+	err = Loop(&en, "root", ctx, inputBuf, outputBuf)
+	if err != nil {
+		t.Fatal(err)
+	}
+	location, _ := st.Where()
+	if location != "foo" {
+		fmt.Errorf("expected location 'foo', got %s", location)
+	}
+}
+
 func TestLoopBackForth(t *testing.T) {
 	generateTestData(t)
 	ctx := context.TODO()

go/render/page.go

@@ -60,11 +60,9 @@ func(pg *Page) Usage() (uint32, uint32, error) {
 	}
 	r := uint32(l)
 	rsv := uint32(c)-r
-	log.Printf("size before %v %v", r, c)
 	if pg.menu != nil {
 		r += uint32(pg.menu.ReservedSize())
 	}
-	log.Printf("size after %v %v", r, c)
 	return r, rsv, nil
 }
 
@@ -149,6 +147,7 @@ func(pg *Page) RenderTemplate(sym string, values map[string]string, idx uint16)
 		return "", err
 	}
 
+
 	b := bytes.NewBuffer([]byte{})
 	err = tp.Execute(b, values)
 	if err != nil {