Function TestRender

testing.go:7–29

TestRender renders a component headlessly and returns a RenderedTree for querying and simulating interactions. No Fyne window is created.

(root View, opts ...TestOption)

// TestRender renders a component headlessly and returns a RenderedTree
// for querying and simulating interactions. No Fyne window is created.
func TestRender(root View, opts ...TestOption) *RenderedTree {
	scope := newScope(context.Background(), nil)

	for _, opt := range opts {
		opt(scope)
	}

	var node *viewNode
	if comp, ok := root.(*componentNode); ok {
		rendered := renderComponent(comp, scope)
		node = rendered.viewNode()
		// Resolve nested components
		node = resolveTree(node, scope)
	} else {
		node = root.viewNode()
	}

	rt := &RenderedTree{scope: scope, root: node, component: nil}
	if comp, ok := root.(*componentNode); ok {
		rt.component = comp
	}
	return rt
}

func resolveTree(node *viewNode, scope *Scope) *viewNode {
	if node.componentRef != nil {