Deprecate LoremPixel (#2590)

* added deprecation warning

* included serach terms in method call

* test for lorem_pixel redirection to loremflickr with options

* used Gem::Deprecate to show warning message

* deprecation message showing
end of year

* test for deprecation warning

* fix rubocop offences

* simplified test for deprecation

* fix rubocop offense on the test file

lib/faker/default/lorem_pixel.rb

@@ -3,6 +3,8 @@
 module Faker
   class LoremPixel < Base
     class << self
+      extend Gem::Deprecate
+
       SUPPORTED_CATEGORIES = %w[abstract
                                 animals
                                 business
@@ -55,6 +57,7 @@ def image(size: '300x300', is_gray: false, category: nil, number: nil, text: nil
         url_parts += [category, number, text].compact
         url_parts.join('/')
       end
+      deprecate :image, 'Faker::LoremFlickr.image', 2022, 12
       # rubocop:enable Metrics/ParameterLists
     end
   end

test/faker/default/test_lorem_pixel.rb

@@ -7,6 +7,14 @@ def setup
     @tester = Faker::LoremPixel
   end
 
+  def test_image_deprecation_message
+    _out, err = capture_output do
+      @tester.image(size: '3x3')
+    end
+
+    assert_match(/Faker::LoremPixel.image is deprecated; use Faker::LoremFlickr.image instead\./, err)
+  end
+
   def test_lorempixel
     refute_nil @tester.image.match(%r{https://lorempixel\.com/(\d+/\d+)})[1]
   end