handle missing dependecies in gem loading

Signed-off-by: Michael Koziarski <michael@koziarski.com>

6 files changed, 95 insertions, 0 deletions

diff --git a/railties/lib/rails/gem_dependency.rb b/railties/lib/rails/gem_dependency.rb
index cd280ac023..5a07841be8 100644
--- a/railties/lib/rails/gem_dependency.rb
+++ b/railties/lib/rails/gem_dependency.rb
@@ -74,6 +74,7 @@ module Rails
 
     def dependencies
       return [] if framework_gem?
+      return [] if specification.nil?
       all_dependencies = specification.dependencies.map do |dependency|
         GemDependency.new(dependency.name, :requirement => dependency.version_requirements)
       end
diff --git a/railties/test/gem_dependency_test.rb b/railties/test/gem_dependency_test.rb
index 4f9e824c9f..1d4f2b18b3 100644
--- a/railties/test/gem_dependency_test.rb
+++ b/railties/test/gem_dependency_test.rb
@@ -129,5 +129,19 @@ uses_mocha "Plugin Tests" do
       assert_equal '1.0.0', DUMMY_GEM_E_VERSION
     end
 
+    def test_gem_handle_missing_dependencies
+      dummy_gem = Rails::GemDependency.new "dummy-gem-g"
+      dummy_gem.add_load_paths
+      dummy_gem.load
+      assert dummy_gem.loaded?
+      debugger
+      assert_equal 2, dummy_gem.dependencies.size
+      assert_nothing_raised do
+        dummy_gem.dependencies.each do |g|
+          g.dependencies
+        end
+      end
+    end
+
   end
 end
diff --git a/railties/test/vendor/gems/dummy-gem-f-1.0.0/.specification b/railties/test/vendor/gems/dummy-gem-f-1.0.0/.specification
new file mode 100644
index 0000000000..70a36b9a8c
--- /dev/null
+++ b/railties/test/vendor/gems/dummy-gem-f-1.0.0/.specification
@@ -0,0 +1,39 @@
+--- !ruby/object:Gem::Specification
+name: dummy-gem-f
+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: absolutely-no-such-gem
+  type: :runtime
+  version_requirement:
+  version_requirements: !ruby/object:Gem::Requirement
+    requirements:
+    - - ">="
+      - !ruby/object:Gem::Version
+        version: 1.0.0
+    version:
+files:
+- lib
+- lib/dummy-gem-f.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 F
diff --git a/railties/test/vendor/gems/dummy-gem-f-1.0.0/lib/dummy-gem-f.rb b/railties/test/vendor/gems/dummy-gem-f-1.0.0/lib/dummy-gem-f.rb
new file mode 100644
index 0000000000..0271c8c48a
--- /dev/null
+++ b/railties/test/vendor/gems/dummy-gem-f-1.0.0/lib/dummy-gem-f.rb
@@ -0,0 +1 @@
+DUMMY_GEM_F_VERSION="1.0.0"
diff --git a/railties/test/vendor/gems/dummy-gem-g-1.0.0/.specification b/railties/test/vendor/gems/dummy-gem-g-1.0.0/.specification
new file mode 100644
index 0000000000..5483048c1c
--- /dev/null
+++ b/railties/test/vendor/gems/dummy-gem-g-1.0.0/.specification
@@ -0,0 +1,39 @@
+--- !ruby/object:Gem::Specification
+name: dummy-gem-g
+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-f
+  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-g.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 G
diff --git a/railties/test/vendor/gems/dummy-gem-g-1.0.0/lib/dummy-gem-g.rb b/railties/test/vendor/gems/dummy-gem-g-1.0.0/lib/dummy-gem-g.rb
new file mode 100644
index 0000000000..8fc056586c
--- /dev/null
+++ b/railties/test/vendor/gems/dummy-gem-g-1.0.0/lib/dummy-gem-g.rb
@@ -0,0 +1 @@
+DUMMY_GEM_G_VERSION="1.0.0"