diff --git a/railties/test/gem_dependency_test.rb b/railties/test/gem_dependency_test.rb
index 4ff4fe8d432b3a0fb15cd3ef9b47efa9cd622d1d..ff27af55721e4c182144bad6eccdf9abcd3bac91 100644
--- a/railties/test/gem_dependency_test.rb
+++ b/railties/test/gem_dependency_test.rb
@@ -145,6 +145,27 @@ def test_gem_handle_missing_dependencies
     end
   end
 
+  def test_gem_ignores_development_dependencies
+    dummy_gem = Rails::GemDependency.new "dummy-gem-k"
+    dummy_gem.add_load_paths
+    dummy_gem.load
+    assert_equal 1, dummy_gem.dependencies.size
+  end
+
+  def test_gem_guards_against_duplicate_unpacks
+    dummy_gem = Rails::GemDependency.new "dummy-gem-a"
+    dummy_gem.stubs(:frozen?).returns(true)
+    dummy_gem.expects(:unpack_base).never
+    dummy_gem.unpack
+  end
+
+  def test_gem_does_not_unpack_framework_gems
+    dummy_gem = Rails::GemDependency.new "dummy-gem-a"
+    dummy_gem.stubs(:framework_gem?).returns(true)
+    dummy_gem.expects(:unpack_base).never
+    dummy_gem.unpack
+  end
+
   def test_gem_from_directory_name
     dummy_gem = Rails::GemDependency.from_directory_name('dummy-gem-1.1')
     assert_equal 'dummy-gem', dummy_gem.name
diff --git a/railties/test/vendor/gems/dummy-gem-h-1.0.0/.specification b/railties/test/vendor/gems/dummy-gem-h-1.0.0/.specification
new file mode 100644
index 0000000000000000000000000000000000000000..b3f7930948b2ec838740e32b78cf209abd4be521
--- /dev/null
+++ b/railties/test/vendor/gems/dummy-gem-h-1.0.0/.specification
@@ -0,0 +1,29 @@
+--- !ruby/object:Gem::Specification
+name: dummy-gem-h
+version: !ruby/object:Gem::Version
+  version: 1.3.0
+platform: ruby
+authors:
+- "Nobody"
+date: 2008-10-03 00:00:00 -04:00
+dependencies:
+files:
+- lib
+- lib/dummy-gem-h.rb
+require_paths:
+- lib
+required_ruby_version: !ruby/object:Gem::Requirement
+  requirements:
+  - - ">="
+    - !ruby/object:Gem::Version
+      version: "0"
+  version:
+required_rubygems_version: !ruby/object:Gem::Requirement
+  requirements:
+  - - ">="
+    - !ruby/object:Gem::Version
+      version: "0"
+  version:
+requirements: []
+specification_version: 2
+summary: Dummy Gem H
diff --git a/railties/test/vendor/gems/dummy-gem-h-1.0.0/lib/dummy-gem-h.rb b/railties/test/vendor/gems/dummy-gem-h-1.0.0/lib/dummy-gem-h.rb
new file mode 100644
index 0000000000000000000000000000000000000000..0f91234936bfd12cce02f28cfae8820560b1440e
--- /dev/null
+++ b/railties/test/vendor/gems/dummy-gem-h-1.0.0/lib/dummy-gem-h.rb
@@ -0,0 +1 @@
+DUMMY_GEM_H_VERSION="1.0.0"
diff --git a/railties/test/vendor/gems/dummy-gem-k-1.0.0/.specification b/railties/test/vendor/gems/dummy-gem-k-1.0.0/.specification
new file mode 100644
index 0000000000000000000000000000000000000000..20edd0f85641ea3ea909574ca1bf58cbc78c18e8
--- /dev/null
+++ b/railties/test/vendor/gems/dummy-gem-k-1.0.0/.specification
@@ -0,0 +1,49 @@
+--- !ruby/object:Gem::Specification
+name: dummy-gem-k
+version: !ruby/object:Gem::Version
+  version: 1.3.0
+platform: ruby
+authors:
+- "Nobody"
+date: 2008-10-03 00:00:00 -04:00
+dependencies:
+- !ruby/object:Gem::Dependency
+  name: dummy-gem-k
+  type: :runtime
+  version_requirement:
+  version_requirements: !ruby/object:Gem::Requirement
+    requirements:
+    - - ">="
+      - !ruby/object:Gem::Version
+        version: 1.0.0
+    version:
+- !ruby/object:Gem::Dependency
+  name: dummy-gem-h
+  type: :development
+  version_requirement:
+  version_requirements: !ruby/object:Gem::Requirement
+    requirements:
+    - - ">="
+      - !ruby/object:Gem::Version
+        version: 1.0.0
+    version:
+files:
+- lib
+- lib/dummy-gem-k.rb
+require_paths:
+- lib
+required_ruby_version: !ruby/object:Gem::Requirement
+  requirements:
+  - - ">="
+    - !ruby/object:Gem::Version
+      version: "0"
+  version:
+required_rubygems_version: !ruby/object:Gem::Requirement
+  requirements:
+  - - ">="
+    - !ruby/object:Gem::Version
+      version: "0"
+  version:
+requirements: []
+specification_version: 2
+summary: Dummy Gem I
diff --git a/railties/test/vendor/gems/dummy-gem-k-1.0.0/lib/dummy-gem-k.rb b/railties/test/vendor/gems/dummy-gem-k-1.0.0/lib/dummy-gem-k.rb
new file mode 100644
index 0000000000000000000000000000000000000000..97fb1d69ce8adeb6198a67928159fd48c40cbe84
--- /dev/null
+++ b/railties/test/vendor/gems/dummy-gem-k-1.0.0/lib/dummy-gem-k.rb
@@ -0,0 +1 @@
+DUMMY_GEM_K_VERSION="1.0.0"