https://git.ruby-lang.org/ruby.git/commit/?id=0bfb406b75

From 0bfb406b7577e733873f59a108795b59fab3c264 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Tue, 4 Jan 2022 08:37:24 +0900
Subject: [rubygems/rubygems] Fix the test to use the mock gem path

"NUL.*" means the NUL device on Windows, as well as mere "NUL",
and no data is read.

https://github.com/rubygems/rubygems/commit/e2c7d22745
---
 spec/bundler/bundler/gem_helper_spec.rb | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/spec/bundler/bundler/gem_helper_spec.rb b/spec/bundler/bundler/gem_helper_spec.rb
index 59feb5b8e96..2a6a6310742 100644
--- a/spec/bundler/bundler/gem_helper_spec.rb
+++ b/spec/bundler/bundler/gem_helper_spec.rb
@@ -170,9 +170,11 @@ RSpec.describe Bundler::GemHelper do https://github.com/ruby/ruby/blob/trunk/spec/bundler/bundler/gem_helper_spec.rb#L170
 
     describe "#build_checksum" do
       it "calculates SHA512 of the content" do
-        subject.build_checksum(Pathname(IO::NULL))
-        sha_path = app_path.join("checksums", "#{File.basename(IO::NULL)}.sha512")
-        expect(File.read(sha_path).chomp).to eql(Digest::SHA512.hexdigest(""))
+        FileUtils.mkdir_p(app_gem_dir)
+        File.write(app_gem_path, "")
+        mock_checksum_message app_name, app_version
+        subject.build_checksum(app_gem_path)
+        expect(File.read(app_sha_path).chomp).to eql(Digest::SHA512.hexdigest(""))
       end
 
       context "when build was successful" do
-- 
cgit v1.2.1


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