test: rename test/run-test.rb to test/run.rb (#241)

This patch will suppress the `circular require considered harmful`
warning when running the `test-unit test` command.

Author: tikkss

Rakefile

@@ -27,7 +27,7 @@ task default: :test
 
 desc "Run tests"
 task :test do
-  ruby("test/run-test.rb")
+  ruby("test/run.rb")
 end
 
 desc "Generate an artifact for GitHub Pages"

test/run-test.rb renamed to test/run.rb

@@ -1,3 +1,5 @@
+require_relative "helper"
+
 class AozoraBunkoTest < Test::Unit::TestCase
   include Helper::PathRestorable
 

test/test-aozora-bunko.rb

@@ -1,3 +1,5 @@
+require_relative "helper"
+
 class CIFARTest < Test::Unit::TestCase
   include Helper::Sandbox
 

test/test-cifar.rb

@@ -1,3 +1,5 @@
+require_relative "helper"
+
 class TestDataset < Test::Unit::TestCase
   sub_test_case("#clear_cache!") do
     include Helper::PathRestorable

test/test-dataset.rb

@@ -1,3 +1,5 @@
+require_relative "helper"
+
 class DownloaderTest < Test::Unit::TestCase
   include Helper::Sandbox