Add coverage workflow.

.github/workflows/coverage.yml

@@ -0,0 +1,54 @@
+name: Coverage
+
+on: [push, pull_request]
+
+env:
+  COVERAGE: PartialSummary
+  CONSOLE_OUTPUT: Text
+
+jobs:
+  test:
+    name: ${{matrix.ruby}} on ${{matrix.os}}
+    runs-on: ${{matrix.os}}-latest
+
+    strategy:
+      matrix:
+        os:
+          - ubuntu
+          - macos
+
+        ruby:
+          - "3.1"
+
+    steps:
+    - uses: actions/checkout@v3
+    - uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{matrix.ruby}}
+        bundler-cache: true
+
+    - name: Run tests
+      timeout-minutes: 5
+      run: bundle exec rspec
+
+    - uses: actions/upload-artifact@v2
+      with:
+        name: coverage-${{matrix.os}}-${{matrix.ruby}}
+        path: .covered.db
+
+  validate:
+    needs: test
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: "3.1"
+        bundler-cache: true
+
+    - uses: actions/download-artifact@v3
+
+    - name: Validate coverage
+      timeout-minutes: 5
+      run: bundle exec bake covered:validate --paths */.covered.db \;

.github/workflows/development.yml

@@ -32,7 +32,7 @@ jobs:
             experimental: true
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{matrix.ruby}}

.github/workflows/external.yml

@@ -17,7 +17,7 @@ jobs:
           - "head"
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{matrix.ruby}}

spec/async/wrapper_spec.rb

@@ -86,11 +86,16 @@
 	describe '#wait_priority' do
 		let(:pipe) {::Socket.pair(:UNIX, :STREAM)}
 
-		it "can wait to be priority" do
+		it "can invoke wait_priority on the underlying io" do
+			expect(output.io).to receive(:wait_priority).and_return(true)
+			output.wait_priority
+		end
+
+		it "can wait for out of band data" do
 			begin
 				# I've tested this successfully on Linux but it fails on Darwin.
 				input.io.send('!', Socket::MSG_OOB)
-			rescue Errno::EOPNOTSUPP => error
+			rescue => error
 				skip error.message
 			end