Merge pull request #13 from ruby/actions

Use GitHub Actions instead of Travis CI

Author: hsbt

.github/workflows/test.yml

@@ -0,0 +1,24 @@
+name: test
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    name: build (${{ matrix.ruby }} / ${{ matrix.os }})
+    strategy:
+      matrix:
+        ruby: [ 2.7, 2.6, head ]
+        os: [ ubuntu-latest, macos-latest ]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - uses: actions/checkout@master
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby }}
+    - name: Install dependencies
+      run: |
+        gem install bundler --no-document
+        bundle install
+    - name: Run test
+      run: rake test

.travis.yml

@@ -17,6 +17,7 @@ Gem::Specification.new do |spec|
   spec.description   = %q{An implementation of Matrix and Vector classes.}
   spec.homepage      = "https://github.com/ruby/matrix"
   spec.license       = "BSD-2-Clause"
+  spec.required_ruby_version = ">= 2.5.0"
 
   spec.files         = [".gitignore", ".travis.yml", "Gemfile", "LICENSE.txt", "README.md", "Rakefile", "bin/console", "bin/setup", "lib/matrix.rb", "lib/matrix/eigenvalue_decomposition.rb", "lib/matrix/lup_decomposition.rb", "lib/matrix/version.rb", "matrix.gemspec"]
   spec.bindir        = "exe"