Split test/ripper/test_files.rb to run in parallel

1 files changed, 32 insertions, 0 deletions

diff --git a/test/ripper/assert_parse_files.rb b/test/ripper/assert_parse_files.rb
new file mode 100644
index 0000000000..85d20cf69e
--- /dev/null
+++ b/test/ripper/assert_parse_files.rb
@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+require 'test/unit'
+
+module TestRipper; end
+class TestRipper::Generic < Test::Unit::TestCase
+  SRCDIR = File.expand_path("../../..", __FILE__)
+
+  def assert_parse_files(dir, pattern = "**/*.rb")
+    assert_separately(%W[--disable-gem -rripper - #{SRCDIR}/#{dir} #{pattern}],
+                      __FILE__, __LINE__, "#{<<-"begin;"}\n#{<<-'end;'}", timeout: Float::INFINITY)
+    pattern = "#{pattern}"
+    begin;
+      TEST_RATIO = ENV["TEST_RIPPER_RATIO"]&.tap {|s|break s.to_f} || 0.05 # testing all files needs too long time...
+      class Parser < Ripper
+        PARSER_EVENTS.each {|n| eval "def on_#{n}(*args) r = [:#{n}, *args]; r.inspect; Object.new end" }
+        SCANNER_EVENTS.each {|n| eval "def on_#{n}(*args) r = [:#{n}, *args]; r.inspect; Object.new end" }
+      end
+      dir = ARGV.shift
+      scripts = Dir.chdir(dir) {Dir[pattern]}
+      if (1...scripts.size).include?(num = scripts.size * TEST_RATIO)
+        scripts = scripts.sample(num)
+      end
+      scripts.sort!
+      for script in scripts
+        assert_nothing_raised {
+          parser = Parser.new(File.read("#{dir}/#{script}"), script)
+          parser.instance_eval "parse", "<#{script}>"
+        }
+      end
+    end;
+  end
+end