Add http://lorempixel.com (#759)

README.md

@@ -58,6 +58,7 @@ Contents
   - [Faker::GameOfThrones](#fakergameofthrones)
   - [Faker::Pokemon](#fakerpokemon)
   - [Faker::Food](#fakerfood)
+  - [Faker::LoremPixel](#fakerlorempixel)
   - [Faker::Ancient](#fakerancient)
 - [Customization](#customization)
 - [Contributing](#contributing)
@@ -897,6 +898,26 @@ Faker::Food.spice #=> "Caraway Seed"
 Faker::Food.measurement #=> "1/4 tablespoon"
 ```
 
+###Faker::LoremPixel
+----------------
+
+```ruby
+
+Faker::LoremPixel.image #=> "http://lorempixel.com/300/300"
+
+Faker::LoremPixel.image("50x60") #=> "http://lorempixel.com/50/60"
+
+Faker::LoremPixel.image("50x60", true) #=> "http://lorempixel.com/g/50/60"
+
+Faker::LoremPixel.image("50x60", false, 'sports') #=> "http://lorempixel.com/50/60/sports"
+
+Faker::LoremPixel.image("50x60", false, 'sports', 3) #=> "http://lorempixel.com/50/60/sports/3"
+
+Faker::LoremPixel.image("50x60", false, 'sports', 3, 'Dummy-text') #=> "http://lorempixel.com/50/60/sports/3/Dummy-text"
+
+Faker::LoremPixel.image("50x60", false, 'sports', nil, 'Dummy-text') #=> "http://lorempixel.com/50/60/sports/Dummy-text"
+```
+
 ###Faker::Ancient
 ----------------
 

lib/faker.rb

@@ -230,6 +230,7 @@ def rand_in_range(from, to)
 require 'faker/game_of_thrones'
 require 'faker/pokemon'
 require 'faker/food'
+require 'faker/lorem_pixel'
 require 'faker/esport'
 require 'faker/bank'
 require 'faker/ancient'

lib/faker/lorem_pixel.rb

@@ -0,0 +1,21 @@
+module Faker
+  class LoremPixel < Base
+    class << self
+      SUPPORTED_CATEGORIES = %w(abstract animals business cats city food nightlife fashion people nature sports technics transport)
+
+      def image(size = '300x300', is_gray = false, category = nil, number = nil, text = nil)
+        raise ArgumentError, 'Size should be specified in format 300x300' unless size.match(/^[0-9]+x[0-9]+$/)
+        raise ArgumentError, "Supported categories are #{SUPPORTED_CATEGORIES.join(', ')}" unless category.nil? || SUPPORTED_CATEGORIES.include?(category)
+        raise ArgumentError, 'Category required when number is passed' if !number.nil? && category.nil?
+        raise ArgumentError, 'Number must be between 1 and 10' unless number.nil? || (1..10).include?(number)
+        raise ArgumentError, 'Category and number must be passed when text is passed' if !text.nil? && number.nil? && category.nil?
+
+        url_parts = ['http://lorempixel.com']
+        url_parts << 'g' if is_gray
+        url_parts += size.split('x')
+        url_parts += [category, number, text].compact
+        url_parts.join('/')
+      end
+    end
+  end
+end

test/test_lorem_pixel.rb

@@ -0,0 +1,66 @@
+require File.expand_path(File.dirname(__FILE__) + '/test_helper.rb')
+
+class TestLoremPixel < Test::Unit::TestCase
+  def setup
+    @tester = Faker::LoremPixel
+  end
+
+  def test_placeholdit
+    assert @tester.image.match(/http:\/\/lorempixel\.com\/(\d+\/\d+)/)[1] != nil
+  end
+
+  def test_image_with_custom_size
+    assert @tester.image('3x3').match(/http:\/\/lorempixel\.com\/(\d+\/\d+)/)[1] == '3/3'
+  end
+
+  def test_image_with_incorrect_size
+    assert_raise ArgumentError do
+      @tester.image('300x300s')
+    end
+  end
+
+  def test_image_gray
+    assert @tester.image('300x300', true).match(/http:\/\/lorempixel\.com\/g\/\d+\/\d+/)
+  end
+
+  def test_image_with_supported_category
+    assert @tester.image('300x300', false, 'animals').match(/http:\/\/lorempixel\.com\/\d+\/\d+\/(.*)/)[1] == 'animals'
+  end
+
+  def test_image_with_incorrect_category
+    assert_raise ArgumentError do
+      @tester.image('300x300', false, 'wrong_category')
+    end
+  end
+
+  def test_image_with_supported_category_and_correct_number
+    assert @tester.image('300x300', false, 'animals', 3).match(/http:\/\/lorempixel\.com\/\d+\/\d+\/.+\/(\d+)/)[1] == '3'
+  end
+
+  def test_image_with_supported_category_and_incorrect_number
+    assert_raise ArgumentError do
+      @tester.image('300x300', false, 'animals', 11)
+    end
+  end
+
+  def test_image_with_correct_number_and_without_category
+    assert_raise ArgumentError do
+      @tester.image('300x300', false, 'wrong_category', 3)
+    end
+  end
+
+  def test_image_with_text_correct_number_and_supported_category
+    assert @tester.image('300x300', false, 'animals', 3, 'Dummy-text').match(/http:\/\/lorempixel\.com\/\d+\/\d+\/.+\/3\/(.+)/)[1] == 'Dummy-text'
+  end
+
+  def test_image_with_text_supported_category_and_text_without_number
+    assert @tester.image('300x300', false, 'animals', nil, 'Dummy-text').match(/http:\/\/lorempixel\.com\/\d+\/\d+\/.+\/(.+)/)[1] == 'Dummy-text'
+  end
+
+  def test_image_with_text_without_number_and_category
+    assert_raise ArgumentError do
+      @tester.image('300x300', false, nil, nil, 'Dummy-text')
+    end
+  end
+
+end