discourse/spec/models/optimized_image_spec.rb
Andy Waite 3e50313fdc Prepare for separation of RSpec helper files
Since rspec-rails 3, the default installation creates two helper files:
* `spec_helper.rb`
* `rails_helper.rb`

`spec_helper.rb` is intended as a way of running specs that do not
require Rails, whereas `rails_helper.rb` loads Rails (as Discourse's
current `spec_helper.rb` does).

For more information:

https://www.relishapp.com/rspec/rspec-rails/docs/upgrade#default-helper-files

In this commit, I've simply replaced all instances of `spec_helper` with
`rails_helper`, and renamed the original `spec_helper.rb`.

This brings the Discourse project closer to the standard usage of RSpec
in a Rails app.

At present, every spec relies on loading Rails, but there are likely
many that don't need to. In a future pull request, I hope to introduce a
separate, minimal `spec_helper.rb` which can be used in tests which
don't rely on Rails.
2015-12-01 20:39:42 +00:00

147 lines
3.5 KiB
Ruby

require 'rails_helper'
describe OptimizedImage do
let(:upload) { build(:upload) }
before { upload.id = 42 }
describe ".local?" do
def local(url)
OptimizedImage.new(url: url).local?
end
it "correctly detects local vs remote" do
expect(local("//hello")).to eq(false)
expect(local("http://hello")).to eq(false)
expect(local("https://hello")).to eq(false)
expect(local("https://hello")).to eq(false)
expect(local("/hello")).to eq(true)
end
end
describe ".create_for" do
context "when using an internal store" do
let(:store) { FakeInternalStore.new }
before { Discourse.stubs(:store).returns(store) }
context "when an error happened while generating the thumbnail" do
it "returns nil" do
OptimizedImage.expects(:resize).returns(false)
expect(OptimizedImage.create_for(upload, 100, 200)).to eq(nil)
end
end
context "when the thumbnail is properly generated" do
before do
OptimizedImage.expects(:resize).returns(true)
end
it "does not download a copy of the original image" do
store.expects(:download).never
OptimizedImage.create_for(upload, 100, 200)
end
it "closes and removes the tempfile" do
Tempfile.any_instance.expects(:close!)
OptimizedImage.create_for(upload, 100, 200)
end
it "works" do
oi = OptimizedImage.create_for(upload, 100, 200)
expect(oi.sha1).to eq("da39a3ee5e6b4b0d3255bfef95601890afd80709")
expect(oi.extension).to eq(".png")
expect(oi.width).to eq(100)
expect(oi.height).to eq(200)
expect(oi.url).to eq("/internally/stored/optimized/image.png")
end
end
end
describe "external store" do
let(:store) { FakeExternalStore.new }
before { Discourse.stubs(:store).returns(store) }
context "when an error happened while generatign the thumbnail" do
it "returns nil" do
OptimizedImage.expects(:resize).returns(false)
expect(OptimizedImage.create_for(upload, 100, 200)).to eq(nil)
end
end
context "when the thumbnail is properly generated" do
before do
OptimizedImage.expects(:resize).returns(true)
end
it "downloads a copy of the original image" do
Tempfile.any_instance.expects(:close!)
store.expects(:download).with(upload).returns(Tempfile.new(["discourse-external", ".png"]))
OptimizedImage.create_for(upload, 100, 200)
end
it "works" do
oi = OptimizedImage.create_for(upload, 100, 200)
expect(oi.sha1).to eq("da39a3ee5e6b4b0d3255bfef95601890afd80709")
expect(oi.extension).to eq(".png")
expect(oi.width).to eq(100)
expect(oi.height).to eq(200)
expect(oi.url).to eq("/externally/stored/optimized/image.png")
end
end
end
end
end
class FakeInternalStore
def external?
false
end
def path_for(upload)
upload.url
end
def store_optimized_image(file, optimized_image)
"/internally/stored/optimized/image#{optimized_image.extension}"
end
end
class FakeExternalStore
def path_for(upload)
nil
end
def external?
true
end
def store_optimized_image(file, optimized_image)
"/externally/stored/optimized/image#{optimized_image.extension}"
end
def download(upload)
extension = File.extname(upload.original_filename)
Tempfile.new(["discourse-s3", extension])
end
end