fix CI

pkg/gui/diffing.go

@@ -33,15 +33,19 @@ func (gui *Gui) renderDiff() error {
 // which becomes an option when you bring up the diff menu, but when you're just
 // flicking through branches it will be using the local branch name.
 func (gui *Gui) currentDiffTerminals() []string {
-	switch gui.currentContext().GetKey() {
-	case "":
+	c := gui.currentSideContext()
+
+	if c.GetKey() == "" {
 		return nil
-	case context.FILES_CONTEXT_KEY, context.SUBMODULES_CONTEXT_KEY:
+	}
+
+	switch v := c.(type) {
+	case *context.WorkingTreeContext, *context.SubmodulesContext:
 		// TODO: should we just return nil here?
 		return []string{""}
-	case context.COMMIT_FILES_CONTEXT_KEY:
-		return []string{gui.State.Contexts.CommitFiles.GetRefName()}
-	case context.LOCAL_BRANCHES_CONTEXT_KEY:
+	case *context.CommitFilesContext:
+		return []string{v.GetRefName()}
+	case *context.BranchesContext:
 		// for our local branches we want to include both the branch and its upstream
 		branch := gui.State.Contexts.Branches.GetSelected()
 		if branch != nil {
@@ -52,13 +56,13 @@ func (gui *Gui) currentDiffTerminals() []string {
 			return names
 		}
 		return nil
-	default:
-		itemId := gui.getSideContextSelectedItemId()
-		if itemId == "" {
-			return nil
-		}
+	case types.IListContext:
+		itemId := v.GetSelectedItemId()
+
 		return []string{itemId}
 	}
+
+	return nil
 }
 
 func (gui *Gui) currentDiffTerminal() string {