Make sure TestDefaultGems#test_validate_gemspec runs even when Dir.pwd != srcdir
For instance, when running tests in build directory like:
$ make test-all TESTOPTS="../ruby/test"
Make sure TestDefaultGems#test_validate_gemspec runs even when Dir.pwd != srcdir
For instance, when running tests in build directory like:
$ make test-all TESTOPTS="../ruby/test"