fontoxpath/test/specs/parsing/axes/AncestorAxis.tests.js

A minimalistic XPath 3.1 engine in JavaScript

import * as slimdom from 'slimdom';
import jsonMlMapper from 'test-helpers/jsonMlMapper';

import {
	evaluateXPathToNodes,
	evaluateXPathToStrings,
} from 'fontoxpath';

let documentNode;
beforeEach(() => {
	documentNode = new slimdom.Document();
});

describe('ancestor', () => {
	it('parses ancestor::', () => {
		jsonMlMapper.parse([
			'someParentElement',
			['someElement', { someAttribute: 'someValue' }]
		], documentNode);
		chai.assert.deepEqual(evaluateXPathToNodes('ancestor::someParentElement', documentNode.documentElement.firstChild), [documentNode.documentElement]);
	});

	it('correctly sets contextSequence', () => {
		jsonMlMapper.parse([
			'someParentElement',
			['someElement', { someAttribute: 'someValue' }]
		], documentNode);
		chai.assert.deepEqual(evaluateXPathToStrings('ancestor-or-self::*/position()', documentNode.documentElement.firstChild), ['1', '2']);
	});
});

describe('ancestor-or-self', () => {
	it('parses ancestor-or-self:: ancestor part', () => {
		jsonMlMapper.parse([
			'someParentElement',
			['someElement', { someAttribute: 'someValue' }]
		], documentNode);
		chai.assert.deepEqual(evaluateXPathToNodes('ancestor-or-self::someParentElement', documentNode.documentElement.firstChild), [documentNode.documentElement]);
	});
	it('parses ancestor-or-self:: self part', () => {
		jsonMlMapper.parse([
			'someParentElement',
			['someElement', { someAttribute: 'someValue' }]
		], documentNode);
		chai.assert.deepEqual(evaluateXPathToNodes('ancestor-or-self::someParentElement', documentNode.documentElement), [documentNode.documentElement]);
	});
	it('orders self before all ancestors', () => {
		jsonMlMapper.parse([
			'someParentElement',
			['someElement']
		], documentNode);
		chai.assert.deepEqual(evaluateXPathToNodes('ancestor-or-self::*', documentNode.documentElement.firstChild), [documentNode.documentElement.firstChild, documentNode.documentElement]);
	});

	it('sets the context sequence', () => {
		jsonMlMapper.parse([
			'someParentElement',
			['someElement']
		], documentNode);
		chai.assert.deepEqual(evaluateXPathToNodes('//someElement/ancestor::*[last()]', documentNode), [documentNode.documentElement]);
	});
});