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