* lib/rubygems: Update to RubyGems master 612f85a. Notable changes:

Fixed installation and activation of git: and path: gems via
  Gem.use_gemdeps

  Improved documentation coverage

* test/rubygems:  ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43845 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/rubygems/test_gem_resolver_specification.rb

@@ -0,0 +1,32 @@
+require 'rubygems/test_case'
+
+class TestGemResolverSpecification < Gem::TestCase
+
+  class TestSpec < Gem::Resolver::Specification
+    attr_reader :spec
+
+    def initialize spec
+      super()
+
+      @spec = spec
+    end
+  end
+
+  def test_installable_platform_eh
+    a = util_spec 'a', 1
+
+    a_spec = TestSpec.new a
+
+    assert a_spec.installable_platform?
+
+    b = util_spec 'a', 1 do |s|
+      s.platform = Gem::Platform.new %w[cpu other_platform 1]
+    end
+
+    b_spec = TestSpec.new b
+
+    refute b_spec.installable_platform?
+  end
+
+end
+