CODEWITHSUNDEEP
ruby-on-railsrspecruby-on-rails-3.2
PascalTurbo
PascalTurbo

Reputation: 2363

ActionController::UnknownFormat with rspec and post request

I'm trying to do some integration tests with rspec on rails 4 but I alway get a "ActionController::UnknownFormat" exception when running the tests.

I tried two different ways:

Failure/Error: post sensors_path, sensor: @sensor_attributes.to_json
ActionController::UnknownFormat:
    ActionController::UnknownFormat


Failure/Error: post sensors_path, sensor: @sensor_attributes, format: :js
ActionController::UnknownFormat:
    ActionController::UnknownFormat

Here is the rspec code:

it "should change the number of sensors" do
    lambda do
        post sensors_path, sensor: @sensor_attributes.to_json 
        end.should change(Sensor, :count).by(1)
    end

it "should be successful" do
    post sensors_path, sensor: @sensor_attributes, format: :js
    response.should be_success
end

And this is the create statement of the controller:

def create
    respond_to do |format|
        format.json do
            @sensor = Sensor.new(params["sensor"])
            @sensor.uuid = SecureRandom.uuid

            @sensor.save

            render nothing: true
        end
    end
end

And the sensor_attributes:

before do
    @sensor_attributes = { name: "Testname", description: "This is a Test-Description." }
end

And the routes:

resources :sensors

Any idea what went wrong?

Upvotes: 16

Views: 13395

Answers (4)

madav
madav

Reputation: 3086

Appending .json to the path worked for me as well (since I was using a shared rspec example and could not just append format: json)...

post "#{sensors_path}.json", sensor: @sensor_attributes

Upvotes: 1

Disha
Disha

Reputation: 796

This is for future readers. Somehow the answer did not help me.

Writing like following worked for me - 

params = {
    sensor: { 
       name: "Testname", 
       description: "This is a Test-Description." 
    },
    format: :json
  }

  post sensors_path, params

Upvotes: 6

palinium
palinium

Reputation: 404

You're using json format in controller, but you're passing format: :js in the test.

It should be:

post sensors_path, sensor: @sensor_attributes, format: :json

Upvotes: 32

Emu
Emu

Reputation: 5905

it "creates a new sensor" do
    expect {
       post :create, {:sensor => {here_you_need_to_put_the_variables_which_are_needed_to_create_a_sensor}}
    }.to change(Sensor, :count).by(1)
end

In you create method, the following line 

@sensor = Sensor.new(params["sensor"])

should be:

@sensor = Sensor.new(params[:sensor])

I don't know the structure of you code. All the solution code i gave is based on my own assumption.

Upvotes: -2

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