Merge pull request #3290 from ashie/gha-mac-os

GitHub Actions: Add macOS and remove .travis.yml

.github/workflows/macos-test.yaml

@@ -0,0 +1,30 @@
+name: Testing on macOS
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+    continue-on-error: ${{ matrix.experimental }}
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby-version: ['head', '2.7']
+        os: [macos-latest]
+        experimental: [true]
+
+    name: Unit testing with Ruby ${{ matrix.ruby-version }} on ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby-version }}
+      - name: Install dependencies
+        run: bundle install
+      - name: Run tests
+        run: bundle exec rake test

test/plugin_helper/test_child_process.rb

@@ -1,3 +1,4 @@
+# coding: utf-8
 require_relative '../helper'
 require 'fluent/plugin_helper/child_process'
 require 'fluent/plugin/base'
@@ -269,10 +270,12 @@ def configure(conf)
     Timeout.timeout(TEST_DEADLOCK_TIMEOUT) do
       ran = false
       @d.child_process_execute(:t4, "ruby -e 'Signal.trap(:TERM, nil); while sleep 0.1; puts 1; STDOUT.flush rescue nil; end'", mode: [:read]) do |io|
-        m.lock
-        ran = true
         begin
           while line = io.readline
+            unless ran
+              m.lock
+              ran = true
+            end
             ary << line
           end
         rescue