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("

")[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 = "

"; 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("

")[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]); }); }); });