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pagination_spec.js
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pagination_spec.js
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var should = require('should'),
hbs = require('../../../server/services/themes/engine'),
configUtils = require('../../utils/configUtils'),
path = require('path'),
helpers = require('../../../server/helpers');
describe('{{pagination}} helper', function () {
before(function (done) {
hbs.express4({partialsDir: [configUtils.config.get('paths').helperTemplates]});
hbs.cachePartials(function () {
done();
});
// The pagination partial expects this helper
// @TODO: change to register with Ghost's own registration tools
hbs.registerHelper('page_url', helpers.page_url);
});
var paginationRegex = /class="pagination"/,
newerRegex = /class="newer-posts"/,
olderRegex = /class="older-posts"/,
pageRegex = /class="page-number"/;
it('should throw if pagination data is incorrect', function () {
var runHelper = function (data) {
return function () {
helpers.pagination.call(data);
};
}, expectedMessage = 'The {{pagination}} helper was used outside of a paginated context. See https://themes.ghost.org/docs/pagination.';
runHelper('not an object').should.throwError(expectedMessage);
runHelper(function () {
}).should.throwError(expectedMessage);
});
it('can render single page with no pagination necessary', function () {
var rendered = helpers.pagination.call({
pagination: {page: 1, prev: null, next: null, limit: 15, total: 8, pages: 1},
tag: {slug: 'slug'}
});
should.exist(rendered);
// strip out carriage returns and compare.
rendered.string.should.match(paginationRegex);
rendered.string.should.match(pageRegex);
rendered.string.should.match(/Page 1 of 1/);
rendered.string.should.not.match(newerRegex);
rendered.string.should.not.match(olderRegex);
});
it('can render first page of many with older posts link', function () {
var rendered = helpers.pagination.call({
pagination: {page: 1, prev: null, next: 2, limit: 15, total: 8, pages: 3}
});
should.exist(rendered);
rendered.string.should.match(paginationRegex);
rendered.string.should.match(pageRegex);
rendered.string.should.match(olderRegex);
rendered.string.should.match(/Page 1 of 3/);
rendered.string.should.not.match(newerRegex);
});
it('can render middle pages of many with older and newer posts link', function () {
var rendered = helpers.pagination.call({
pagination: {page: 2, prev: 1, next: 3, limit: 15, total: 8, pages: 3}
});
should.exist(rendered);
rendered.string.should.match(paginationRegex);
rendered.string.should.match(pageRegex);
rendered.string.should.match(olderRegex);
rendered.string.should.match(newerRegex);
rendered.string.should.match(/Page 2 of 3/);
});
it('can render last page of many with newer posts link', function () {
var rendered = helpers.pagination.call({
pagination: {page: 3, prev: 2, next: null, limit: 15, total: 8, pages: 3}
});
should.exist(rendered);
rendered.string.should.match(paginationRegex);
rendered.string.should.match(pageRegex);
rendered.string.should.match(newerRegex);
rendered.string.should.match(/Page 3 of 3/);
rendered.string.should.not.match(olderRegex);
});
it('validates values', function () {
var runErrorTest = function (data) {
return function () {
helpers.pagination.call(data);
};
};
runErrorTest({pagination: {page: 3, prev: true, next: null, limit: 15, total: 8, pages: 3}})
.should.throwError('Invalid value, Next/Prev must be a number');
runErrorTest({pagination: {page: 3, prev: 2, next: true, limit: 15, total: 8, pages: 3}})
.should.throwError('Invalid value, Next/Prev must be a number');
runErrorTest({pagination: {limit: 15, total: 8, pages: 3}})
.should.throwError('All values must be defined for page, pages, limit and total');
runErrorTest({pagination: {page: 3, total: 8, pages: 3}})
.should.throwError('All values must be defined for page, pages, limit and total');
runErrorTest({pagination: {page: 3, limit: 15, pages: 3}})
.should.throwError('All values must be defined for page, pages, limit and total');
runErrorTest({pagination: {page: 3, limit: 15, total: 8}})
.should.throwError('All values must be defined for page, pages, limit and total');
runErrorTest({pagination: {page: null, prev: null, next: null, limit: 15, total: 8, pages: 3}})
.should.throwError('Invalid value, check page, pages, limit and total are numbers');
runErrorTest({pagination: {page: 1, prev: null, next: null, limit: null, total: 8, pages: 3}})
.should.throwError('Invalid value, check page, pages, limit and total are numbers');
runErrorTest({pagination: {page: 1, prev: null, next: null, limit: 15, total: null, pages: 3}})
.should.throwError('Invalid value, check page, pages, limit and total are numbers');
runErrorTest({pagination: {page: 1, prev: null, next: null, limit: 15, total: 8, pages: null}})
.should.throwError('Invalid value, check page, pages, limit and total are numbers');
});
});
describe('{{pagination}} helper with custom template', function () {
before(function (done) {
hbs.express4({partialsDir: [path.resolve(configUtils.config.get('paths').corePath, 'test/unit/helpers/test_tpl')]});
hbs.cachePartials(function () {
done();
});
});
it('can render single page with @blog.title', function () {
var rendered = helpers.pagination.call({
pagination: {page: 1, prev: null, next: null, limit: 15, total: 8, pages: 1},
tag: {slug: 'slug'}
}, {
data: {
blog: {
title: 'Chaos is a ladder.'
}
}
});
should.exist(rendered);
// strip out carriage returns and compare.
rendered.string.should.match(/Page 1 of 1/);
rendered.string.should.containEql('Chaos is a ladder');
});
});