My code has a lot of this: driver.blahblahblah. Consider the following code sample, taken from http://www.browserstack.com/automate/ruby.
require 'rubygems'
require 'selenium-webdriver'
driver = Selenium::WebDriver.for(:remote,
:url => "http://USERNAME:ACCESS_KEY#hub.browserstack.com/wd/hub")
driver.navigate.to "http://www.google.com/ncr"
element = driver.find_element(:name, 'q')
element.submit
puts driver.title
driver.quit
How can I make driver implicit? For example there's a method called driver.save_screenshot(). I want to say save_screenshot("a.png") because only the driver variable/object has this method.
You can use delegate from ActiveSupport like the example below:
require 'active_support/core_ext/module/delegation'
class MyClass
delegate :find_element, :save_screenshot, to: :driver
def foo
find_element
save_screenshot
end
def driver
#driver ||= Driver.new
end
end
class Driver
def find_element
puts "find_element"
end
def save_screenshot
puts "save_screenshot"
end
end
MyClass.new.foo
Or decorate the driver using SimpleDelegator (but I don't recommend that).
If you have lots of methods whose receiver is driver, then a way to make the receivers implicit is:
driver.instance_eval do
method_1...
method_2...
...
end
but notice that this slows down a little. If you are just finding a way to be lazy, then the best way is to make the local variable as short as a single letter, and do not bother making it implicit.
d = .... # instead of `drive`
d.method_1...
d.method_2...
...
Related
I am looking to map my elements using pageObject model, although I am facing the following issue:
1:. error is thrown given I have no driver, this is ok since I only map my driver when I instantiate the class
element = #driver.find_element(:id => 'username')
def initialize driver
#driver = driver
#driver.navigate.to "http://www.google.com"
end
def set_username input
element.send_keys input
end
2:. in the below approach, it doesn't complain about missing driver because I am initializing it before and passing it as a global variable. but now it tries to map the element even before opening the page, which fails with "couldn't find element"
element = $driver.find_element(:id => 'username')
def initialize
$driver.navigate.to "http://www.google.com"
end
def set_username input
element.send_keys input
end
The question is: Is there any cheeky way I can map my elements and assign them to objects but only have them compiled/read when I actually need to use them (I only perform some action with it in the set_username, and I would only want to trigger the object mapping when utilizing it in this method for example)... I prefer not to use an existing pageObject framework...
With the Page Object model, you have an object that represents the page you're testing, and objects that represent lower level HTML objects. In this case, you might have the following classes:
# Represents a text input HTML element...
class TextInput
attr_reader :element
def initialize(driver, id)
element = driver.find_element(:id => id)
end
def type(text)
element.send_keys text
end
end
# Represents the page you are testing...
class SomePage
attr_reader :driver, :username
def initialize(driver)
#driver = driver
end
def username
#username ||= TextInput.new(#driver, 'username')
end
end
Once you have initialized your driver, you pass it to SomePage, and use it
to drive what you're doing.
some_page = SomePage.new(driver)
some_page.username.type("Timmy")
I can't vouch for the page-object gem because I've never used it, but it would handle those HTML-layer objects, and give you a domain-specific language for constructing them into a page object class. Worth checking out.
So, I'm trying to build a quick console program for my development needs, akin to rails console (I'm using Sinatra + DataMapper + pry).
I run it and launch cat = Category.new(name: 'TestCat', type: :referential). It gives me the following error:
Error: Cannot open "/home/art-solopov/Projects/by-language/Ruby/billy-bones/=" for reading.
What could be the cause of the problem?
console:
#!/usr/bin/env ruby
$LOAD_PATH << 'lib'
require 'pry'
require 'config'
binding.pry
lib/config.rb:
# Configuration files and app-wide requires go here
require 'sinatra'
require 'data_mapper'
require 'model/bill'
require 'model/category'
configure :production do
DataMapper::Logger.new('db-log', :debug)
DataMapper.setup(:default,
'postgres://billy-bones:billy#localhost/billy-bones')
DataMapper.finalize
end
configure :development do
DataMapper::Logger.new($stderr, :debug)
DataMapper.setup(:default,
'postgres://billy-bones:billy#localhost/billy-bones-dev')
DataMapper.finalize
DataMapper.auto_upgrade!
end
configure :test do
require 'dm_migrations'
DataMapper::Logger.new($stderr, :debug)
DataMapper.setup(:default,
'postgres://billy-bones:billy#localhost/billy-bones-test')
DataMapper.finalize
DataMapper.auto_migrate!
end
lib/model/category.rb:
require 'data_mapper'
class Category
include DataMapper::Resource
property :id, Serial
property :name, String
property :type, Enum[:referential, :predefined, :computable]
has n, :bills
# has n, :tariffs TODO uncomment when tariff ready
def create_bill(params)
# A bill factory for current category type
case type
when :referential
ReferentialBill.new params
when :predefined
PredefinedBill.new params
when :computable
ComputableBill.new params
end
end
end
If I substitute pry with irb in the console script, it goes fine.
Thank you very much!
P. S.
Okay, yesterday I tried this script again, and it worked perfectly. I didn't change anything. I'm not sure whether I should remove the question now or not.
P. P. S.
Or actually not... Today I've encountered it again. Still completely oblivious to what could cause it.
** SOLVED **
DAMN YOU PRY!
Okay, so here's the difference.
When I tested it the second time, I actually entered a = Category.new(name: 'TestCat', type: :referential) and it worked. Looks like pry just thinks cat is a Unix command, not a valid variable name.
Not answer to the pry question I just generally hate case statements in ruby.
Why not change:
def create_bill(params)
# A bill factory for current category type
case type
when :referential
ReferentialBill.new params
when :predefined
PredefinedBill.new params
when :computable
ComputableBill.new params
end
end
to:
def create_bill(params)
# A bill factory for current category type
self.send("new_#{type}_bill",params)
end
def new_referential_bill(params)
ReferentialBill.new params
end
def new_predefined_bill(params)
PredefinedBill.new params
end
def new_computable_bill(params)
ComputableBill.new params
end
You could make this more dynamic but I think that would take away from readability in this case but if you'd like in rails this should do the trick
def create_bill(params)
if [:referential, :predefined, :computable].include?(type)
"#{type}_bill".classify.constantize.new(params)
else
#Some Kind of Handling for non Defined Bill Types
end
end
Or this will work inside or outside rails
def create_bill(params)
if [:referential, :predefined, :computable].include?(type)
Object.const_get("#{type.to_s.capitalize}Bill").new(params)
else
#Some Kind of Handling for non Defined Bill Types
end
end
hi getting error which is not understand able i am new to ruby so please help .
i checked all thing which is possible for me.
require 'rubygems'
require 'selenium-webdriver'
require 'test/unit'
class SeleniumTest < Test::Unit::TestCase
driver = Selenium::WebDriver.for :firefox
driver.get "http://localhost:9000/assets/build/index.html#/login"
element = driver.find_element :name => "email"
element.send_keys "kaushik#abc.com"
element = driver.find_element :name => "password"
element.send_keys "password"
element.submit
page.find(:xpath, "//a[#href='#/courses/new']").click
#click_link ("//a[#href='#/courses/new']")
puts "Page title is #{driver.title}"
#page.should have_selector(:link_or_button, ' Create New Course...')
wait = Selenium::WebDriver::Wait.new(:timeout => 2000)
driver.quit
end
getting This error:-
TestClass.rb:7:in `<class:SeleniumTest>': undefined local variable or method `logger' for SeleniumTest:Class (NameError)
from TestClass.rb:6:in `<main>'
It seems that you didn't included the complete source code.
Besides that, all you code is bare in class SeleniumTest. You should put your code into the appropriate method or methods.
This type of errors are generated when objects or methods are not created or not scoped well.
In your case, the error message is telling you that the object logger in line 7 of you script does not exist.
As I can see from your source code, line 7 falls into the class definition. I guess you have something like
logger.log 'logging text'
in that line but you delete it from your post, and in lines 4 and 5 you have something like:
require 'logger'
logger = Logger.new('file.log')
If that is the case, you could put logger = Logger.new('file.log') inside the class definition, or define an instance object of type Logger inside the SeleniumClass class, or a global method or something other for logging messages.
Examples:
class SeleniumTest < Test::Unit::TestCase
logger = Logger.new('file.log')
logger.log "logging text"
...
end
or
class SeleniumTest < Test::Unit::TestCase
def initialize
#logger = Logger.new('file.log')
end
def log(message)
#logger.log mesage
end
...
def some_method_with_your_code
...
log "logging text"
...
end
end
st = SeleniumTest.new
st.some_method_with_your_code
... or something similar...
I hope this can help you solve your problem.
If not, you should put the complete source code and tell us what are you trying to do!
I am using the Selenium Webdriver libraries in Ruby. A typical piece of code looks like this:
require 'rubygems'
require 'selenium-webdriver'
driver = Selenium::WebDriver.for :firefox
# driver is an instance of Selenium::WebDriver::Driver
url = 'http://www.google.com/'
wait = Selenium::WebDriver::Wait.new(:timeout => 10)
driver.get(url)
wait.until { driver.title.start_with? "Google" }
I would like to create a subclass of Selenium::WebDriver::Driver called Selenium::WebDriver::Driver::MyClass that will contain some new methods and instance variables.
As the above code illustrates, the way that instances of Selenium::WebDriver::Driver are created is with Selenium::WebDriver.for.
Without wholesale copying of code, how can I create a version of Selenium::WebDriver.for that does the same thing as Selenium::WebDriver.for but creates instances of Selenium::WebDriver::Driver::MyClass?
Why not just override the Selenium::WebDriver.for ? let me show you that my an example
# selenium code
module Selenium
class WebDriver
def self.for
puts "creating oldclass"
end
end
end
# your code
class Selenium::WebDriver
def self.for
puts "creating myclass"
end
end
Selenium::WebDriver.for
output:
creating myclass
Safe alternative is to derive class from Selenium::WebDriver and use that in your code, or to the extreme you can just open Driver class and add your behavior to it.
Check the source code. Selenium::WebDriver.for simply delegate the method call to Selenium::WebDriver::Driver.for.
If you don't have listener attached, you can simple create your own bridge MyClass::Bridge.new and then pass that to Selenium::WebDriver::Driver.new.
If you insist override the for method, here is some code snippet that might help.
module Selenium
module WebDriver
class Driver
class << self
alias_method :old_for, :for
def for(browser, opts = {})
if browser == :myclass
# create your MyClass::Bridge instance and pass that to new()
else
old_for(browser, opts)
end
end
end
end
end
end
If you just want to define some extra methods on your driver, you do not need to override WebDriver.for.
The following worked well for me:
First, in file customdriver.rb
require 'selenium-webdriver'
class CustomDriver < Selenium::WebDriver::Driver
#a custom method..
def click_on (_id)
element = find_element :id => _id
element.click
end
#add other custom methods here
#....
end
Then, in file main.rb
require-relative 'customdriver'
driver = CustomDriver.for :chrome
driver.click_on("buttonID")
Regards,
I am trying to use some functionality in ActiveModel but I'm having trouble making everything work. I've included my class file and the test I'm running.
The test is failing with:
': undefined method `attr_accessible
I really don't know why, since MassAssignmentSecurity will bring that in and it is in fact running. I've also tried to include all of ActiveModel as well but that's doesn't work either. It doesn't seem to matter if I use include or extend to bring in the MassAssignmentSecurity.
If I pass in some attributes in my test to exercise "assign_attributes" in the initialize, that fails as well. I'm fairly new to rails, so I'm hoping I'm just missing something really simple.
TIA.
Using rails 3.2.12
my_class.rb
class MyClass
include ActiveModel::MassAssignmentSecurity
include ActiveModel::Validations
include ActiveModel::Conversion
extend ActiveModel::Naming
extend ActiveSupport::Callbacks
attr_accessible :persisted, :creds
def initialize(attributes = nil, options = {})
#persisted = false
assign_attributes(attributes, options) if attributes
yield self if block_given?
end
end
my_class_spec.rb
require 'spec_helper'
describe MyClass do
before do
#testcase = MyClass.new
end
subject { #testcase }
it_should_behave_like "ActiveModel"
it { MyClass.should include(ActiveModel::MassAssignmentSecurity) }
it { should respond_to(:persisted) }
end
support/active_model.rb
shared_examples_for "ActiveModel" do
include ActiveModel::Lint::Tests
# to_s is to support ruby-1.9
ActiveModel::Lint::Tests.public_instance_methods.map{|m| m.to_s}.grep(/^test/).each do |m|
example m.gsub('_',' ') do
send m
end
end
def model
subject
end
end
Yikes! What a mess I was yesterday. Might as well answer my own question since I figured out my issues.
attr_accessible in MassAssignmentSecurity does not work like it does with ActiveRecord. It does not create getters and setters. You still have to use attr_accessor if you those created.
assign_attributes is a connivence function that someone wrote to wrap around mass_assignment_sanitizer and isn't something baked into in MassAssignment Security. An example implementation is below:
def assign_attributes(values, options = {})
sanitize_for_mass_assignment(values, options[:as]).each do |k, v|
send("#{k}=", v)
end
end