1 files changed, 29 insertions, 0 deletions
diff --git a/test/ruby/test_default_gems.rb b/test/ruby/test_default_gems.rb
new file mode 100644
index 0000000000..b82e304cbd
--- /dev/null
+++ b/test/ruby/test_default_gems.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: false
+require 'rubygems'
+
+class TestDefaultGems < Test::Unit::TestCase
+  def self.load(file)
+    code = File.read(file, mode: "r:UTF-8:-", &:read)
+
+    # These regex patterns are from load_gemspec method of rbinstall.rb.
+    # - `git ls-files` is useless under ruby's repository
+    # - `2>/dev/null` works only on Unix-like platforms
+    code.gsub!(/(?:`git[^\`]*`|%x\[git[^\]]*\])\.split\([^\)]*\)/m, '[]')
+    code.gsub!(/IO\.popen\(.*git.*?\)/, '[] || itself')
+
+    eval(code, binding, file)
+  end
+
+  def test_validate_gemspec
+    srcdir = File.expand_path('../../..', __FILE__)
+    specs = 0
+    Dir.chdir(srcdir) do
+      all_assertions_foreach(nil, *Dir["{lib,ext}/**/*.gemspec"]) do |src|
+        specs += 1
+        assert_kind_of(Gem::Specification, self.class.load(src), "invalid spec in #{src}")
+      end
+    end
+    assert_operator specs, :>, 0, "gemspecs not found"
+  end
+
+end