run CI on all supported fasterer versions

Author: ashkulz

.github/workflows/checks.yml

@@ -12,9 +12,12 @@ jobs:
     strategy:
       matrix:
         ruby: ['2.3', '2.4', '2.5', '2.6', '2.7', '3.0', '3.1', '3.2']
+        fasterer: ['~> 0.10.0', '~> 0.11.0', '< 1.0']
       fail-fast: false
     steps:
     - uses: actions/checkout@v3
+    - name: use specific fasterer version
+      run: echo "gem 'fasterer', '${{ matrix.fasterer }}'" > Gemfile.local
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby }}

Gemfile

@@ -1,3 +1,5 @@
 source 'https://rubygems.org'
 
 gemspec
+local_gemfile = File.expand_path('Gemfile.local', __dir__)
+eval_gemfile local_gemfile if File.exist?(local_gemfile)