PageObject

Ad

Ad

Ad

Ad

Ad

Ad

Ad

Ad

Ad

Ad

Ad

Ad

PageObject
testing automation pattern
Pavel Mitin . 2014

Real life example
When /^user clicks on Action>>"(.*)" in the book list$/ do |action_name|
book_name_column = column_index...

Problem
When /^user clicks on Action>>"(.*)" in the book list$/ do |action_name|
book_name_column = column_index "//table[...

Be more OO
All problems in computer science can be
solved by another level of indirection
Butler Lampson/David Wheeler

PageObject pattern
* HOW becomes the internal implementation details
* WHAT manifests itself in public interface

Code example
book_list = BookListPanel.new
...
book_list.filter_by_author author
...
book_list.paginate 2

Code example
book_list = BookListPanel.new
...
book_list.filter_by_author author
...
book_list.paginate 2
Object-oriented
...

OLD

NEW

PageObject vs PanelObject
There's an argument here that the name "page object" is
misleading because it makes you think yo...

PageObject vs PanelObject
Options:
1) Single object per page
2) Tree of objects (page object + panel objects)
3) Independe...

PageObject vs PanelObject
Options:
1) Single object per page
2) Tree of objects (page object -- root)
3) Independent panel...

PageObject vs PanelObject
Options:
1) Single object per page
2) Tree of objects (page object -- root)
3) Independent panel...

PageObject vs PanelObject
Options:
1) Single object per page
2) Tree of objects (page object -- root)
3) Independent panel...

More examples
# https://github.com/ngauthier/domino
class Dom::Post < Domino
selector '#posts .post'
attribute :title
attr...

More examples
# https://github.com/ngauthier/domino
assert_equal 4, Dom::Post.count
refute_nil Dom::Post.find_by_title('Fi...

$More examples # https://github.com/ngauthier/domino def delete within(id) { click_button 'Delete' } end … refute_nil Dom::...$

Asserts
Can PageObject class contain asserts?

Asserts
# External assert
assert book_list.empty?
# vs
# Internal assert
book_list.assert_emtpy

Asserts
# Internal approach works well with
# complex asserts
book_list.assert_searchable
# 1. Put a term in the search in...

Asserts
# Mixins / traits etc.
book_list = BookListPanel.new
book_list.extend ListAsserts
...
book_list.assert_searchable

Chain of pages
# Don't try this at home ;)
books = book_form.submit
assert 1, books.size
book = books.first.show_details

WEB only?
No

No silver bullet
You have to maintain the layer of abstraction.

No silver bullet
Don’t use if your interface is not uniform.

Sweet spot

DRY it
# production code (UI widget in view layer)
books = Widget::BookList.new current_user
books.render
# test code (UI ...

Thanks
@map_and_filter
http://novembermeeting.blogspot.com

Share Slideshare

LinkedIn
Facebook
Twitter

Embed

Size (px)

Show related Slideshows at end

WordPress Shortcode

Link

Share
Email

Сидристый Станислав: Паттерны и ант... by Stanislav Sidristy 162 views

View on Slideshare

1 of 28 Ad

View on Slideshare

1 of 28 Ad