Windows support

.github/workflows/tests.yml

@@ -13,7 +13,8 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        ruby: [ 2.7, "3.0", 3.1, 3.2 ]
+        ruby: [ 2.7, "3.0", 3.1, 3.2, 3.3 ]
+        os: [ ubuntu-latest, windows-latest ]
 
     steps:
       - uses: actions/checkout@v3

Gemfile.lock

@@ -2,6 +2,8 @@ PATH
   remote: .
   specs:
     turbo_tests (2.2.0)
+      fileutils (~> 1.4)
+      open3 (~> 0.1)
       parallel_tests (>= 3.3.0, < 5)
       rspec (>= 3.10)
 
@@ -10,7 +12,9 @@ GEM
   specs:
     coderay (1.1.3)
     diff-lcs (1.5.0)
+    fileutils (1.7.2)
     method_source (1.0.0)
+    open3 (0.2.1)
     parallel (1.22.1)
     parallel_tests (4.2.0)
       parallel

lib/turbo_tests.rb

@@ -1,8 +1,10 @@
 # frozen_string_literal: true
 
+require "securerandom"
 require "open3"
 require "fileutils"
 require "json"
+
 require "rspec"
 
 require "parallel_tests"

lib/turbo_tests/json_rows_formatter.rb

@@ -164,7 +164,7 @@ def group_to_json(notification)
     end
 
     def output_row(obj)
-      output.puts(obj.to_json)
+      output.puts ENV["RSPEC_FORMATTER_OUTPUT_ID"] + obj.to_json
       output.flush
     end
   end

lib/turbo_tests/runner.rb

@@ -24,7 +24,7 @@ def self.run(opts = {})
       seed_used = !opts[:seed].nil?
 
       if verbose
-        STDERR.puts "VERBOSE"
+        warn "VERBOSE"
       end
 
       reporter = Reporter.from_config(formatters, start_time)
@@ -134,19 +134,19 @@ def start_subprocess(env, extra_args, tests, process_id, record_runtime:)
       if tests.empty?
         @messages << {
           type: "exit",
-          process_id: process_id
+          process_id: process_id,
         }
       else
-        tmp_filename = "tmp/test-pipes/subprocess-#{process_id}"
-
-        begin
-          File.mkfifo(tmp_filename)
-        rescue Errno::EEXIST
-        end
-
+        env["RSPEC_FORMATTER_OUTPUT_ID"] = SecureRandom.uuid
         env["RUBYOPT"] = ["-I#{File.expand_path("..", __dir__)}", ENV["RUBYOPT"]].compact.join(" ")
         env["RSPEC_SILENCE_FILTER_ANNOUNCEMENTS"] = "1"
 
+        if ENV["BUNDLE_BIN_PATH"]
+          command_name = [ENV["BUNDLE_BIN_PATH"], "exec", "rspec"]
+        else
+          command_name = "rspec"
+        end
+
         record_runtime_options =
           if record_runtime
             [
@@ -158,50 +158,54 @@ def start_subprocess(env, extra_args, tests, process_id, record_runtime:)
           end
 
         command = [
-          "rspec",
+          *command_name,
           *extra_args,
-          "--seed", @seed,
+          "--seed", rand(0xFFFF).to_s,
+          "--format", "ParallelTests::RSpec::RuntimeLogger",
+          "--out", @runtime_log,
           "--format", "TurboTests::JsonRowsFormatter",
-          "--out", tmp_filename,
           *record_runtime_options,
-          *tests
+          *tests,
         ]
-        command.unshift(ENV["BUNDLE_BIN_PATH"], "exec") if ENV["BUNDLE_BIN_PATH"]
 
         if @verbose
           command_str = [
             env.map { |k, v| "#{k}=#{v}" }.join(" "),
-            command.join(" ")
+            command.join(" "),
           ].select { |x| x.size > 0 }.join(" ")
 
-          STDERR.puts "Process #{process_id}: #{command_str}"
+          warn "Process #{process_id}: #{command_str}"
         end
 
         stdin, stdout, stderr, wait_thr = Open3.popen3(env, *command)
         stdin.close
 
         @threads <<
           Thread.new do
-            File.open(tmp_filename) do |fd|
-              fd.each_line do |line|
-                message = JSON.parse(line, symbolize_names: true)
+            stdout.each_line do |line|
+              result = line.split(env["RSPEC_FORMATTER_OUTPUT_ID"])
+
+              output = result.shift
+              print(output) unless output.empty?
+
+              message = result.shift
+              next unless message
 
-                message[:process_id] = process_id
-                @messages << message
-              end
+              message = JSON.parse(message, symbolize_names: true)
+              message[:process_id] = process_id
+              @messages << message
             end
 
-            @messages << {type: "exit", process_id: process_id}
+            @messages << { type: "exit", process_id: process_id }
           end
 
-        @threads << start_copy_thread(stdout, STDOUT)
         @threads << start_copy_thread(stderr, STDERR)
 
-        @threads << Thread.new {
+        @threads << Thread.new do
           unless wait_thr.value.success?
-            @messages << {type: "error"}
+            @messages << { type: "error" }
           end
-        }
+        end
 
         wait_thr
       end

turbo_tests.gemspec

@@ -21,6 +21,8 @@ Gem::Specification.new do |spec|
 
   spec.add_dependency "rspec", ">= 3.10"
   spec.add_dependency "parallel_tests", ">= 3.3.0", "< 5"
+  spec.add_dependency "fileutils", "~> 1.4"
+  spec.add_dependency "open3", "~> 0.1"
 
   spec.add_development_dependency "pry", "~> 0.14"