Move from Travis CI to GitHub CI (#93)

* Move from Travis CI to GitHub CI

* Update error message

* Fix Ruby 2.3 compatibility

.github/workflows/ci.yml

@@ -0,0 +1,52 @@
+name: CI
+
+on:
+ push:
+ branches: [ master ]
+ pull_request:
+ branches: [ '**' ]
+
+jobs:
+ tests:
+ runs-on: ubuntu-latest
+ strategy:
+ fail-fast: false
+ matrix:
+ ruby:
+ - "2.3"
+ - "2.4"
+ - "2.5"
+ - "2.6"
+ - "2.7"
+ - "3.0"
+ - "jruby-9.2"
+
+ steps:
+ - uses: actions/checkout@v2
+
+ - name: Set up Ruby
+ uses: ruby/setup-ruby@v1
+ with:
+ ruby-version: ${{ matrix.ruby }}
+ bundler-cache: true
+
+ - name: Update apt
+ env:
+ DEBIAN_FRONTEND: noninteractive
+ run:
+ sudo apt-get update -qq -o Acquire::Retries=3
+
+ - name: Install ImageMagick
+ env:
+ DEBIAN_FRONTEND: noninteractive
+ run:
+ sudo apt-get install -qq -o Acquire::Retries=3 imagemagick graphicsmagick
+
+ - name: Install libvips
+ env:
+ DEBIAN_FRONTEND: noninteractive
+ run:
+ sudo apt-get install --fix-missing -qq -o Acquire::Retries=3 libvips
+
+ - name: Run tests
+ run: bundle exec rake test

lib/image_processing/chainable.rb

@@ -53,7 +53,9 @@ def operation(name, *args, &block)
  # Call the defined processing and get the result. Allows specifying
  # the source file and destination.
  def call(file = nil, destination: nil, **call_options)
- options = { source: file, destination: destination }.compact
+ options = {}
+ options[:source] = file if file
+ options[:destination] = destination if destination
 
  branch(**options).call!(**call_options)
  end

test/vips_test.rb

@@ -115,7 +115,7 @@
 
  it "raises correct Vips::Error on unknown saver" do
  error = assert_raises(Vips::Error) { ImageProcessing::Vips.convert("foo").call(@portrait) }
- assert_includes error.message, "No known saver"
+ assert_includes error.message, "is not a known file format"
  end
 
  it "accepts :saver" do