flutter/packages/unit/test/engine/replace_child_test.dart

55 lines
2.0 KiB
Dart

import 'dart:ui';
import 'package:test/test.dart';
import 'dom_utils.dart';
void main() {
Document document = new Document();
test("should replace elements", () {
Element parent = document.createElement("div");
Element oldChild = parent.appendChild(document.createElement("div"));
Element newChild = document.createElement("div");
oldChild.replaceWith(<Node>[newChild]);
expect(oldChild.parentNode, isNull);
expect(newChild.parentNode, equals(parent));
});
test("should replace text", () {
Element parent = document.createElement("div");
Node oldChild = parent.appendChild(document.createText(" it's a text "));
Element newChild = document.createElement("div");
oldChild.replaceWith(<Node>[newChild]);
expect(oldChild.parentNode, isNull);
expect(newChild.parentNode, equals(parent));
});
test("should replace children with a fragment", () {
DocumentFragment fragment = document.createDocumentFragment();
Element child1 = fragment.appendChild(document.createElement("div"));
Node child2 = fragment.appendChild(document.createText(" text "));
Node child3 = fragment.appendChild(document.createText(" "));
Element child4 = fragment.appendChild(document.createElement("div"));
Element parent = document.createElement("div");
Element oldChild = parent.appendChild(document.createElement("div"));
Element lastChild = parent.appendChild(document.createElement("div"));
oldChild.replaceWith(<Node>[fragment]);
expect(child1.parentNode, equals(parent));
expect(child2.parentNode, equals(parent));
expect(child3.parentNode, equals(parent));
expect(child4.parentNode, equals(parent));
expect(oldChild.parentNode, isNull);
expect(childNodeCount(parent), equals(5));
expect(childElementCount(parent), equals(3));
expect(parent.lastChild, equals(lastChild));
});
// test("should throw when appending to a text", () {
// var parent = new Text();
// expect(() {
// parent.replaceChild(document.createElement("div"), null);
// }, throws);
// });
}