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|
package dom
import (
"strings"
"testing"
"golang.org/x/net/html"
)
func TestRemoveNode(t *testing.T) {
child := &html.Node{
Data: "child",
}
doc := &html.Node{
Data: "parent",
}
if doc.FirstChild != nil {
t.Error("expected FirstChild to be nil")
}
if child.Parent != nil {
t.Error("expected Parent to be nil")
}
doc.AppendChild(child)
if doc.FirstChild == nil {
t.Error("expected FirstChild not to be nil anymore")
}
if child.Parent == nil {
t.Error("expected Parent not to be nil anymore")
}
RemoveNode(child)
if doc.FirstChild != nil {
t.Error("expected FirstChild to be nil again")
}
if child.Parent != nil {
t.Error("expected Parent to be nil again")
}
// Should not crash if run again...
RemoveNode(child)
if doc.Parent != nil {
t.Error("expected Parent to still be nil")
}
}
func TestReplaceNode(t *testing.T) {
node1 := &html.Node{
Data: "original",
}
node2 := &html.Node{
Data: "replacement",
}
doc := &html.Node{}
doc.AppendChild(node1)
ReplaceNode(node1, node1)
if doc.FirstChild != node1 {
t.Error("expected the node1 to still be in place")
}
ReplaceNode(node1, node2)
if doc.FirstChild != node2 {
t.Error("expected the node2 to take the place")
}
if node1.Parent != nil {
t.Error("expected node1 to not have a parent anymore")
}
}
func TestUnwrapNode(t *testing.T) {
child1 := &html.Node{
Type: html.ElementNode,
Data: "child1",
}
child2 := &html.Node{
Type: html.ElementNode,
Data: "child2",
}
child2.AppendChild(&html.Node{
Type: html.ElementNode,
Data: "child2.1",
})
parent := &html.Node{
Type: html.ElementNode,
Data: "parent",
}
parent.AppendChild(child1)
parent.AppendChild(child2)
root := &html.Node{
Type: html.ElementNode,
Data: "root",
}
root.AppendChild(parent)
// - - - - - //
expectedBefore := strings.TrimSpace(`
root
├─parent
│ ├─child1
│ ├─child2
│ │ ├─child2.1
`)
expectedAfter := strings.TrimSpace(`
root
├─child1
├─child2
│ ├─child2.1
`)
if RenderRepresentation(root) != expectedBefore {
t.Error("expected a different initial render")
}
if root.FirstChild != parent {
t.Error("expected the parent to be under root")
}
UnwrapNode(parent)
if root.FirstChild == parent {
t.Error("expected the parent to not be under root anymore")
}
if RenderRepresentation(root) != expectedAfter {
t.Error("expected a different final render")
}
UnwrapNode(root)
if root.Data != "root" {
t.Error("expected the root to still be the root")
}
}
func TestWrapNode(t *testing.T) {
child1 := &html.Node{
Type: html.ElementNode,
Data: "child1",
}
child2 := &html.Node{
Type: html.ElementNode,
Data: "child2",
}
child2.AppendChild(&html.Node{
Type: html.ElementNode,
Data: "child2.1",
})
parent := &html.Node{
Type: html.ElementNode,
Data: "parent",
}
parent.AppendChild(child1)
parent.AppendChild(child2)
root := &html.Node{
Type: html.ElementNode,
Data: "root",
}
root.AppendChild(parent)
// - - - - - //
wrapper := &html.Node{
Type: html.ElementNode,
Data: "wrapper",
}
expectedBefore := strings.TrimSpace(`
root
├─parent
│ ├─child1
│ ├─child2
│ │ ├─child2.1
`)
expectedAfter := strings.TrimSpace(`
root
├─wrapper
│ ├─parent
│ │ ├─child1
│ │ ├─child2
│ │ │ ├─child2.1
`)
if RenderRepresentation(root) != expectedBefore {
t.Error("expected a different initial render")
}
if root.FirstChild != parent {
t.Error("expected the parent to be under root")
}
WrapNode(parent, wrapper)
if RenderRepresentation(root) != expectedAfter {
t.Error("expected a different final render")
}
if root.FirstChild != wrapper {
t.Error("expected the wrapper to be under root")
}
// With no parent, there should be no change.
WrapNode(root, &html.Node{Type: html.ElementNode, Data: "sky"})
if RenderRepresentation(root) != expectedAfter {
t.Error("there should be no changes")
}
}
|
