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node_modules/domutils/test/tests/helpers.js
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var makeDom = require("../utils").makeDom;
var helpers = require("../..");
var assert = require("assert");
describe("helpers", function() {
describe("removeSubsets", function() {
var removeSubsets = helpers.removeSubsets;
var dom = makeDom("<div><p><span></span></p><p></p></div>")[0];
it("removes identical trees", function() {
var matches = removeSubsets([dom, dom]);
assert.equal(matches.length, 1);
});
it("Removes subsets found first", function() {
var matches = removeSubsets([dom, dom.children[0].children[0]]);
assert.equal(matches.length, 1);
});
it("Removes subsets found last", function() {
var matches = removeSubsets([dom.children[0], dom]);
assert.equal(matches.length, 1);
});
it("Does not remove unique trees", function() {
var matches = removeSubsets([dom.children[0], dom.children[1]]);
assert.equal(matches.length, 2);
});
});
describe("compareDocumentPosition", function() {
var compareDocumentPosition = helpers.compareDocumentPosition;
var markup = "<div><p><span></span></p><a></a></div>";
var dom = makeDom(markup)[0];
var p = dom.children[0];
var span = p.children[0];
var a = dom.children[1];
it("reports when the first node occurs before the second indirectly", function() {
assert.equal(compareDocumentPosition(span, a), 2);
});
it("reports when the first node contains the second", function() {
assert.equal(compareDocumentPosition(p, span), 10);
});
it("reports when the first node occurs after the second indirectly", function() {
assert.equal(compareDocumentPosition(a, span), 4);
});
it("reports when the first node is contained by the second", function() {
assert.equal(compareDocumentPosition(span, p), 20);
});
it("reports when the nodes belong to separate documents", function() {
var other = makeDom(markup)[0].children[0].children[0];
assert.equal(compareDocumentPosition(span, other), 1);
});
it("reports when the nodes are identical", function() {
assert.equal(compareDocumentPosition(span, span), 0);
});
});
describe("uniqueSort", function() {
var uniqueSort = helpers.uniqueSort;
var dom, p, span, a;
beforeEach(function() {
dom = makeDom("<div><p><span></span></p><a></a></div>")[0];
p = dom.children[0];
span = p.children[0];
a = dom.children[1];
});
it("leaves unique elements untouched", function() {
assert.deepEqual(uniqueSort([p, a]), [p, a]);
});
it("removes duplicate elements", function() {
assert.deepEqual(uniqueSort([p, a, p]), [p, a]);
});
it("sorts nodes in document order", function() {
assert.deepEqual(uniqueSort([a, dom, span, p]), [dom, p, span, a]);
});
});
});
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