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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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