add test for dropbox exports

backend/dropbox/dropbox_internal_test.go

@@ -1,9 +1,16 @@
 package dropbox
 
 import (
+	"context"
+	"io"
+	"strings"
 	"testing"
 
+	"github.com/dropbox/dropbox-sdk-go-unofficial/v6/dropbox"
+	"github.com/dropbox/dropbox-sdk-go-unofficial/v6/dropbox/files"
+	"github.com/rclone/rclone/fstest/fstests"
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func TestInternalCheckPathLength(t *testing.T) {
@@ -42,3 +49,54 @@ func TestInternalCheckPathLength(t *testing.T) {
 		assert.Equal(t, test.ok, err == nil, test.in)
 	}
 }
+
+func (f *Fs) importPaperForTest(t *testing.T) {
+	content := `# test doc
+
+Lorem ipsum __dolor__ sit amet
+[link](http://google.com)
+`
+
+	arg := files.PaperCreateArg{
+		Path:         f.slashRootSlash + "export.paper",
+		ImportFormat: &files.ImportFormat{Tagged: dropbox.Tagged{Tag: files.ImportFormatMarkdown}},
+	}
+	var err error
+	err = f.pacer.Call(func() (bool, error) {
+		reader := strings.NewReader(content)
+		_, err = f.srv.PaperCreate(&arg, reader)
+		return shouldRetry(context.Background(), err)
+	})
+	require.NoError(t, err)
+}
+
+func (f *Fs) InternalTestPaperExport(t *testing.T) {
+	ctx := context.Background()
+	f.importPaperForTest(t)
+
+	f.exportExts = []exportExtension{"html"}
+
+	obj, err := f.NewObject(ctx, "export.html")
+	require.NoError(t, err)
+
+	rc, err := obj.Open(ctx)
+	require.NoError(t, err)
+	defer func() { require.NoError(t, rc.Close()) }()
+
+	buf, err := io.ReadAll(rc)
+	require.NoError(t, err)
+	text := string(buf)
+
+	for _, excerpt := range []string{
+		"Lorem ipsum",
+		"<b>dolor</b>",
+		`href="http://google.com"`,
+	} {
+		require.Contains(t, text, excerpt)
+	}
+}
+func (f *Fs) InternalTest(t *testing.T) {
+	t.Run("PaperExport", f.InternalTestPaperExport)
+}
+
+var _ fstests.InternalTester = (*Fs)(nil)