Use isolated temporary directory in test-all too for RubyGems tests

1 files changed, 20 insertions, 0 deletions

diff --git a/tool/lib/_tmpdir.rb b/tool/lib/_tmpdir.rb
new file mode 100644
index 0000000000..ddc263b563
--- /dev/null
+++ b/tool/lib/_tmpdir.rb
@@ -0,0 +1,20 @@
+require "tmpdir"
+require "fileutils"
+
+template = "rubytest."
+if (tmpdir = Dir.mktmpdir(template)).size > 50
+  # On macOS, the default TMPDIR is very long, inspite of UNIX socket
+  # path length is limited.
+  Dir.rmdir(tmpdir)
+  tmpdir = Dir.mktmpdir(template, "/tmp")
+end
+# warn "tmpdir(#{tmpdir.size}) = #{tmpdir}"
+
+pid = $$
+END {
+  if pid == $$
+    FileUtils.rm_rf(tmpdir)
+  end
+}
+
+ENV["TMPDIR"] = ENV["SPEC_TEMP_DIR"] = ENV["GEM_TEST_TMPDIR"] = tmpdir