[RAILS] [When using MiniMagick] A memorandum because I stumbled in the CircleCI test environment.

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Status

There was a case where the RSpec test that worked well in the local environment became an error on CircleCI. This error is caused by the minimagick used for image shaping. The error log is as follows.

Development environment

• Docker
• Rails6 --CircleCI (automatic test)
• RSpec

Technology used

--carrierwave (gem for image upload) --minimagick (gem for image shaping)

Error log (CircleCI test job)

Failure/Error: let(:food_record) { create(:food_record) }

ActiveRecord::RecordInvalid:
Validation failed:Please enter an image,Image MiniMagick was unable to process the file. Please check the image. Error message: You must have ImageMagick or GraphicsMagick installed
./spec/models/food_record_spec.rb:4:in `block (2 levels) in <top (required)>'
./spec/models/food_record_spec.rb:31:in `block (3 levels) in <top (required)>'

Countermeasure ① ⇨ Failure

As mentioned in the error log, MiniMagick doesn't seem to work without installing ImageMagick. In the local environment, you installed ImageMagick before you knew it. Therefore, I installed the package with the build job of .circleci/config.yml.

.circleci/config.yml

(abridgement)

jobs:
  build: # our first job, named "build"
    docker:
      - image: cimg/ruby:2.7-node # use a tailored CircleCI docker image.
    steps:
      - checkout # pull down our git code.
      - ruby/install-deps # use the ruby orb to install dependencies
      # use the node orb to install our packages
      # specifying that we use `yarn` and to cache dependencies with `yarn.lock`
      # learn more: https://circleci.com/docs/2.0/caching/
      - node/install-packages:
          pkg-manager: yarn
          cache-key: "yarn.lock"
      - run: sudo apt-get update
      - run: sudo apt-get -y install imagemagick　　　#<Added in the build job! !! ＞

   　　　　　　(abridgement)

# We use workflows to orchestrate the jobs that we declared above.
workflows:
  version: 2
  build_and_test:
    jobs:
      - build
      - test:
          requires:
            - build

There is no error, and even if you check the log, the installation seems to be successful, but it is the same as the previous error. In order to set up something ImageMagick, I may not have what I need at the time of the buildings job, so I took the following actions.

Countermeasure ② ⇨ Success

Install MagickImage in test job

.circleci/config.yml

(abridgement)

  test:  # our next job, called "test"
    # we run "parallel job containers" to enable speeding up our tests;
    # this splits our tests across multiple containers.
    parallelism: 3
    # here we set 3 docker images.
    docker:
      - image: cimg/ruby:2.7-node # this is our primary docker image, where step commands run.
      - image: circleci/postgres
        environment: # add POSTGRES environment variables.
          POSTGRES_USER: postgres
          POSTGRES_PASSWORD: postgres
          POSTGRES_DB: test
        name: db
      - image: selenium/standalone-chrome
        name: chrome
    # environment variables specific to Ruby/Rails, applied to the primary container.
    environment:
      BUNDLE_JOBS: "3"
      BUNDLE_RETRY: "3"
      PGHOST: db
      RAILS_ENV: test
      SELENIUM_REMOTE_URL: http://chrome:4444/wd/hub
    # A series of steps to run, some are similar to those in "build".
    steps:
      - checkout
      - ruby/install-deps
      - node/install-packages:
          pkg-manager: yarn
          cache-key: "yarn.lock"
      - run: sudo apt-get update
      - run: sudo apt-get -y install imagemagick　　#<Added in test job! !! ＞

    (abridgement)

Finally

This workaround worked! I couldn't find out the details of the cause of the error, but I hope it helps those who are addicted to the same error. Also, if anyone knows the cause of this, I'm sorry to trouble you, but I would be very grateful if you could let me know in the comments.

Reference material

See the pull request below to see how they actually struggle with errors. https://github.com/naokikubo2/cookinglife_app/pull/15