Start to move nuget license lookup to separate plugin class

6 files changed, 233 insertions, 147 deletions

diff --git a/lib/spandx/cli/commands/scan.rb b/lib/spandx/cli/commands/scan.rb
index e924498..6fb0c4b 100644
--- a/lib/spandx/cli/commands/scan.rb
+++ b/lib/spandx/cli/commands/scan.rb
@@ -51,9 +51,7 @@ module Spandx
         end
 
         def enhance(dependency)
-          ::Spandx::Core::Extension
-            .for(dependency)
-            .enhance(dependency)
+          ::Spandx::Core::Plugin.map { |plugin| plugin.enhance(dependency) }
         end
       end
     end
diff --git a/lib/spandx/core/dependency.rb b/lib/spandx/core/dependency.rb
index 1c46a85..b7a0a84 100644
--- a/lib/spandx/core/dependency.rb
+++ b/lib/spandx/core/dependency.rb
@@ -10,21 +10,26 @@ module Spandx
         rubygems: ::Spandx::Ruby::Gateway,
       }.freeze
 
-      attr_reader :package_manager, :name, :version, :meta
+      attr_reader :package_manager, :name, :version, :licenses, :meta
 
-      def initialize(package_manager:, name:, version:, meta: {})
+      def initialize(package_manager:, name:, version:, licenses: [], meta: {})
         @package_manager = package_manager
         @name = name
         @version = version
         @meta = meta
+        @licenses = []
       end
 
-      def licenses(catalogue: Spdx::Catalogue.from_git)
-        Spdx::GatewayAdapter
-          .new(catalogue: catalogue, gateway: combine(cache_for(package_manager), gateway_for(package_manager)))
-          .licenses_for(name, version)
+      def managed_by?(value)
+        package_manager == value&.to_sym
       end
 
+      #def licenses(catalogue: Spdx::Catalogue.from_git)
+        #Spdx::GatewayAdapter
+          #.new(catalogue: catalogue, gateway: combine(cache_for(package_manager), gateway_for(package_manager)))
+          #.licenses_for(name, version)
+      #end
+
       def <=>(other)
         [name, version] <=> [other.name, other.version]
       end
diff --git a/lib/spandx/core/extension.rb b/lib/spandx/core/plugin.rb
index e6fa12b..2dfbcdc 100644
--- a/lib/spandx/core/extension.rb
+++ b/lib/spandx/core/plugin.rb
@@ -2,19 +2,13 @@
 
 module Spandx
   module Core
-    class Extension
-      UNKNOWN = Class.new do
-        def self.enhance(x)
-          x
-        end
-      end
-
+    class Plugin
       class << self
         include Enumerable
 
         def each(&block)
           registry.each do |x|
-            block.call(x)
+            block.call(x.new)
           end
         end
 
@@ -25,14 +19,6 @@ module Spandx
         def registry
           @registry ||= []
         end
-
-        def for(dependency)
-          result = ::Spandx::Core::Extension.find do |x|
-            x.extends?(x)
-          end
-
-          result&.new || UNKNOWN
-        end
       end
     end
   end
diff --git a/lib/spandx/dotnet/license_plugin.rb b/lib/spandx/dotnet/license_plugin.rb
new file mode 100644
index 0000000..6a48bf5
--- /dev/null
+++ b/lib/spandx/dotnet/license_plugin.rb
@@ -0,0 +1,56 @@
+# frozen_string_literal: true
+
+module Spandx
+  module Dotnet
+    class LicensePlugin < Spandx::Core::Plugin
+      GATEWAYS = {
+        composer: ::Spandx::Php::PackagistGateway,
+        maven: ::Spandx::Java::Gateway,
+        nuget: ::Spandx::Dotnet::NugetGateway,
+        rubygems: ::Spandx::Ruby::Gateway,
+      }.freeze
+
+      def initialize(catalogue: Spdx::Catalogue.from_git)
+        @catalogue = catalogue
+      end
+
+      def enhance(dependency)
+        return dependency unless dependency.managed_by?(:nuget)
+
+        licenses_for(dependency).each do |license|
+          dependency.licenses << license
+        end
+        dependency
+      end
+
+      private
+
+      attr_reader :catalogue
+
+      def licenses_for(dependency)
+        Spdx::GatewayAdapter
+          .new(catalogue: catalogue, gateway: combine(cache_for(dependency.package_manager), gateway_for(dependency.package_manager)))
+          .licenses_for(dependency.name, dependency.version)
+      end
+
+      def combine(gateway, other_gateway)
+        ::Spandx::Core::CompositeGateway.new(gateway, other_gateway)
+      end
+
+      def gateway_for(package_manager)
+        case package_manager
+        when :yarn, :npm
+          js_gateway
+        when :pypi
+          python_gateway
+        else
+          GATEWAYS.fetch(package_manager, ::Spandx::Core::NullGateway).new
+        end
+      end
+
+      def cache_for(package_manager)
+        ::Spandx::Core::Cache.new(package_manager, url: package_manager == :rubygems ? 'https://github.com/mokhan/spandx-rubygems.git' : 'https://github.com/mokhan/spandx-index.git')
+      end
+    end
+  end
+end
diff --git a/spec/unit/core/dependency_spec.rb b/spec/unit/core/dependency_spec.rb
index 38b13be..3a1f0c9 100644
--- a/spec/unit/core/dependency_spec.rb
+++ b/spec/unit/core/dependency_spec.rb
@@ -1,131 +1,143 @@
 # frozen_string_literal: true
 
 RSpec.describe Spandx::Core::Dependency do
-  [
-    { package_manager: :composer, name: 'doctrine/instantiator', version: '1.3.0', expected: ['MIT'] },
-    { package_manager: :composer, name: 'hamcrest/hamcrest-php', version: 'v2.0.0', expected: ['Nonstandard'] },
-    { package_manager: :composer, name: 'mockery/mockery', version: '1.3.1', expected: ['BSD-3-Clause'] },
-    { package_manager: :composer, name: 'phpdocumentor/reflection-common', version: '2.0.0', expected: ['MIT'] },
-    { package_manager: :composer, name: 'phpdocumentor/type-resolver', version: '1.0.1', expected: ['MIT'] },
-    { package_manager: :composer, name: 'symfony/polyfill-ctype', version: 'v1.14.0', expected: ['MIT'] },
-    { package_manager: :composer, name: 'webmozart/assert', version: '1.7.0', expected: ['MIT'] },
-    { package_manager: :maven, name: 'junit:junit', version: '3.8.1', expected: ['CPL-1.0'] },
-    { package_manager: :npm, name: 'accepts', version: '1.3.7', expected: ['MIT'] },
-    { package_manager: :npm, name: 'array-flatten', version: '1.1.1', expected: ['MIT'] },
-    { package_manager: :npm, name: 'body-parser', version: '1.19.0', expected: ['MIT'] },
-    { package_manager: :npm, name: 'bytes', version: '3.1.0', expected: ['MIT'] },
-    { package_manager: :npm, name: 'content-disposition', version: '0.5.3', expected: ['MIT'] },
-    { package_manager: :npm, name: 'content-type', version: '1.0.4', expected: ['MIT'] },
-    { package_manager: :npm, name: 'cookie', version: '0.4.0', expected: ['MIT'] },
-    { package_manager: :npm, name: 'cookie-signature', version: '1.0.6', expected: ['MIT'] },
-    { package_manager: :npm, name: 'debug', version: '2.6.9', expected: ['MIT'] },
-    { package_manager: :npm, name: 'depd', version: '1.1.2', expected: ['MIT'] },
-    { package_manager: :npm, name: 'destroy', version: '1.0.4', expected: ['MIT'] },
-    { package_manager: :npm, name: 'ee-first', version: '1.1.1', expected: ['MIT'] },
-    { package_manager: :npm, name: 'encodeurl', version: '1.0.2', expected: ['MIT'] },
-    { package_manager: :npm, name: 'escape-html', version: '1.0.3', expected: ['MIT'] },
-    { package_manager: :npm, name: 'etag', version: '1.8.1', expected: ['MIT'] },
-    { package_manager: :npm, name: 'express', version: '4.17.1', expected: ['MIT'] },
-    { package_manager: :npm, name: 'finalhandler', version: '1.1.2', expected: ['MIT'] },
-    { package_manager: :npm, name: 'forwarded', version: '0.1.2', expected: ['MIT'] },
-    { package_manager: :npm, name: 'fresh', version: '0.5.2', expected: ['MIT'] },
-    { package_manager: :npm, name: 'http-errors', version: '1.7.2', expected: ['MIT'] },
-    { package_manager: :npm, name: 'iconv-lite', version: '0.4.24', expected: ['MIT'] },
-    { package_manager: :npm, name: 'inherits', version: '2.0.3', expected: ['ISC'] },
-    { package_manager: :npm, name: 'ipaddr.js', version: '1.9.1', expected: ['MIT'] },
-    { package_manager: :npm, name: 'jquery', version: '3.4.0', expected: ['MIT'] },
-    { package_manager: :npm, name: 'media-typer', version: '0.3.0', expected: ['MIT'] },
-    { package_manager: :npm, name: 'merge-descriptors', version: '1.0.1', expected: ['MIT'] },
-    { package_manager: :npm, name: 'methods', version: '1.1.2', expected: ['MIT'] },
-    { package_manager: :npm, name: 'mime', version: '1.6.0', expected: ['MIT'] },
-    { package_manager: :npm, name: 'mime-db', version: '1.43.0', expected: ['MIT'] },
-    { package_manager: :npm, name: 'mime-types', version: '2.1.26', expected: ['MIT'] },
-    { package_manager: :npm, name: 'ms', version: '2.0.0', expected: ['MIT'] },
-    { package_manager: :npm, name: 'negotiator', version: '0.6.2', expected: ['MIT'] },
-    { package_manager: :npm, name: 'on-finished', version: '2.3.0', expected: ['MIT'] },
-    { package_manager: :npm, name: 'parseurl', version: '1.3.3', expected: ['MIT'] },
-    { package_manager: :npm, name: 'path-to-regexp', version: '0.1.7', expected: ['MIT'] },
-    { package_manager: :npm, name: 'proxy-addr', version: '2.0.6', expected: ['MIT'] },
-    { package_manager: :npm, name: 'qs', version: '6.7.0', expected: ['BSD-3-Clause'] },
-    { package_manager: :npm, name: 'range-parser', version: '1.2.1', expected: ['MIT'] },
-    { package_manager: :npm, name: 'raw-body', version: '2.4.0', expected: ['MIT'] },
-    { package_manager: :npm, name: 'safe-buffer', version: '5.1.2', expected: ['MIT'] },
-    { package_manager: :npm, name: 'safer-buffer', version: '2.1.2', expected: ['MIT'] },
-    { package_manager: :npm, name: 'send', version: '0.17.1', expected: ['MIT'] },
-    { package_manager: :npm, name: 'serve-static', version: '1.14.1', expected: ['MIT'] },
-    { package_manager: :npm, name: 'setprototypeof', version: '1.1.1', expected: ['ISC'] },
-    { package_manager: :npm, name: 'statuses', version: '1.5.0', expected: ['MIT'] },
-    { package_manager: :npm, name: 'toidentifier', version: '1.0.0', expected: ['MIT'] },
-    { package_manager: :npm, name: 'type-is', version: '1.6.18', expected: ['MIT'] },
-    { package_manager: :npm, name: 'unpipe', version: '1.0.0', expected: ['MIT'] },
-    { package_manager: :npm, name: 'utils-merge', version: '1.0.1', expected: ['MIT'] },
-    { package_manager: :npm, name: 'vary', version: '1.1.2', expected: ['MIT'] },
-    { package_manager: :nuget, name: 'NHibernate', version: '5.2.6', expected: ['LGPL-2.1-only'] },
-    { package_manager: :nuget, name: 'System.Security.Principal.Windows', version: '4.3.0', expected: ['Nonstandard'] },
-    { package_manager: :nuget, name: 'jive', version: '0.1.0', expected: ['MIT'] },
-    { package_manager: :pypi, name: 'six', version: '1.14.0', expected: ['MIT'] },
-    { package_manager: :rubygems, name: 'spandx', version: '0.1.0', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'accepts', version: '1.3.7', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'array-flatten', version: '1.1.1', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'body-parser', version: '1.19.0', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'bytes', version: '3.1.0', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'content-disposition', version: '0.5.3', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'content-type', version: '1.0.4', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'cookie', version: '0.4.0', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'cookie-signature', version: '1.0.6', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'debug', version: '2.6.9', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'depd', version: '1.1.2', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'destroy', version: '1.0.4', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'ee-first', version: '1.1.1', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'encodeurl', version: '1.0.2', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'escape-html', version: '1.0.3', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'etag', version: '1.8.1', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'express', version: '4.17.1', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'finalhandler', version: '1.1.2', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'forwarded', version: '0.1.2', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'fresh', version: '0.5.2', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'http-errors', version: '1.7.2', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'iconv-lite', version: '0.4.24', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'inherits', version: '2.0.3', expected: ['ISC'] },
-    { package_manager: :yarn, name: 'ipaddr.js', version: '1.9.1', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'jquery', version: '3.4.0', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'media-typer', version: '0.3.0', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'merge-descriptors', version: '1.0.1', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'methods', version: '1.1.2', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'mime', version: '1.6.0', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'mime-db', version: '1.43.0', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'mime-types', version: '2.1.26', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'ms', version: '2.0.0', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'negotiator', version: '0.6.2', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'on-finished', version: '2.3.0', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'parseurl', version: '1.3.3', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'path-to-regexp', version: '0.1.7', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'proxy-addr', version: '2.0.6', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'qs', version: '6.7.0', expected: ['BSD-3-Clause'] },
-    { package_manager: :yarn, name: 'range-parser', version: '1.2.1', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'raw-body', version: '2.4.0', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'safe-buffer', version: '5.1.2', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'safer-buffer', version: '2.1.2', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'send', version: '0.17.1', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'serve-static', version: '1.14.1', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'setprototypeof', version: '1.1.1', expected: ['ISC'] },
-    { package_manager: :yarn, name: 'statuses', version: '1.5.0', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'toidentifier', version: '1.0.0', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'type-is', version: '1.6.18', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'unpipe', version: '1.0.0', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'utils-merge', version: '1.0.1', expected: ['MIT'] },
-    { package_manager: :yarn, name: 'vary', version: '1.1.2', expected: ['MIT'] },
-  ].each do |item|
-    context "#{item[:package_manager]}-#{item[:name]}-#{item[:version]}" do
-      subject { described_class.new(package_manager: item[:package_manager], name: item[:name], version: item[:version]) }
+  describe "#licenses" do
+    [
+      { package_manager: :composer, name: 'doctrine/instantiator', version: '1.3.0', expected: ['MIT'] },
+      { package_manager: :composer, name: 'hamcrest/hamcrest-php', version: 'v2.0.0', expected: ['Nonstandard'] },
+      { package_manager: :composer, name: 'mockery/mockery', version: '1.3.1', expected: ['BSD-3-Clause'] },
+      { package_manager: :composer, name: 'phpdocumentor/reflection-common', version: '2.0.0', expected: ['MIT'] },
+      { package_manager: :composer, name: 'phpdocumentor/type-resolver', version: '1.0.1', expected: ['MIT'] },
+      { package_manager: :composer, name: 'symfony/polyfill-ctype', version: 'v1.14.0', expected: ['MIT'] },
+      { package_manager: :composer, name: 'webmozart/assert', version: '1.7.0', expected: ['MIT'] },
+      { package_manager: :maven, name: 'junit:junit', version: '3.8.1', expected: ['CPL-1.0'] },
+      { package_manager: :npm, name: 'accepts', version: '1.3.7', expected: ['MIT'] },
+      { package_manager: :npm, name: 'array-flatten', version: '1.1.1', expected: ['MIT'] },
+      { package_manager: :npm, name: 'body-parser', version: '1.19.0', expected: ['MIT'] },
+      { package_manager: :npm, name: 'bytes', version: '3.1.0', expected: ['MIT'] },
+      { package_manager: :npm, name: 'content-disposition', version: '0.5.3', expected: ['MIT'] },
+      { package_manager: :npm, name: 'content-type', version: '1.0.4', expected: ['MIT'] },
+      { package_manager: :npm, name: 'cookie', version: '0.4.0', expected: ['MIT'] },
+      { package_manager: :npm, name: 'cookie-signature', version: '1.0.6', expected: ['MIT'] },
+      { package_manager: :npm, name: 'debug', version: '2.6.9', expected: ['MIT'] },
+      { package_manager: :npm, name: 'depd', version: '1.1.2', expected: ['MIT'] },
+      { package_manager: :npm, name: 'destroy', version: '1.0.4', expected: ['MIT'] },
+      { package_manager: :npm, name: 'ee-first', version: '1.1.1', expected: ['MIT'] },
+      { package_manager: :npm, name: 'encodeurl', version: '1.0.2', expected: ['MIT'] },
+      { package_manager: :npm, name: 'escape-html', version: '1.0.3', expected: ['MIT'] },
+      { package_manager: :npm, name: 'etag', version: '1.8.1', expected: ['MIT'] },
+      { package_manager: :npm, name: 'express', version: '4.17.1', expected: ['MIT'] },
+      { package_manager: :npm, name: 'finalhandler', version: '1.1.2', expected: ['MIT'] },
+      { package_manager: :npm, name: 'forwarded', version: '0.1.2', expected: ['MIT'] },
+      { package_manager: :npm, name: 'fresh', version: '0.5.2', expected: ['MIT'] },
+      { package_manager: :npm, name: 'http-errors', version: '1.7.2', expected: ['MIT'] },
+      { package_manager: :npm, name: 'iconv-lite', version: '0.4.24', expected: ['MIT'] },
+      { package_manager: :npm, name: 'inherits', version: '2.0.3', expected: ['ISC'] },
+      { package_manager: :npm, name: 'ipaddr.js', version: '1.9.1', expected: ['MIT'] },
+      { package_manager: :npm, name: 'jquery', version: '3.4.0', expected: ['MIT'] },
+      { package_manager: :npm, name: 'media-typer', version: '0.3.0', expected: ['MIT'] },
+      { package_manager: :npm, name: 'merge-descriptors', version: '1.0.1', expected: ['MIT'] },
+      { package_manager: :npm, name: 'methods', version: '1.1.2', expected: ['MIT'] },
+      { package_manager: :npm, name: 'mime', version: '1.6.0', expected: ['MIT'] },
+      { package_manager: :npm, name: 'mime-db', version: '1.43.0', expected: ['MIT'] },
+      { package_manager: :npm, name: 'mime-types', version: '2.1.26', expected: ['MIT'] },
+      { package_manager: :npm, name: 'ms', version: '2.0.0', expected: ['MIT'] },
+      { package_manager: :npm, name: 'negotiator', version: '0.6.2', expected: ['MIT'] },
+      { package_manager: :npm, name: 'on-finished', version: '2.3.0', expected: ['MIT'] },
+      { package_manager: :npm, name: 'parseurl', version: '1.3.3', expected: ['MIT'] },
+      { package_manager: :npm, name: 'path-to-regexp', version: '0.1.7', expected: ['MIT'] },
+      { package_manager: :npm, name: 'proxy-addr', version: '2.0.6', expected: ['MIT'] },
+      { package_manager: :npm, name: 'qs', version: '6.7.0', expected: ['BSD-3-Clause'] },
+      { package_manager: :npm, name: 'range-parser', version: '1.2.1', expected: ['MIT'] },
+      { package_manager: :npm, name: 'raw-body', version: '2.4.0', expected: ['MIT'] },
+      { package_manager: :npm, name: 'safe-buffer', version: '5.1.2', expected: ['MIT'] },
+      { package_manager: :npm, name: 'safer-buffer', version: '2.1.2', expected: ['MIT'] },
+      { package_manager: :npm, name: 'send', version: '0.17.1', expected: ['MIT'] },
+      { package_manager: :npm, name: 'serve-static', version: '1.14.1', expected: ['MIT'] },
+      { package_manager: :npm, name: 'setprototypeof', version: '1.1.1', expected: ['ISC'] },
+      { package_manager: :npm, name: 'statuses', version: '1.5.0', expected: ['MIT'] },
+      { package_manager: :npm, name: 'toidentifier', version: '1.0.0', expected: ['MIT'] },
+      { package_manager: :npm, name: 'type-is', version: '1.6.18', expected: ['MIT'] },
+      { package_manager: :npm, name: 'unpipe', version: '1.0.0', expected: ['MIT'] },
+      { package_manager: :npm, name: 'utils-merge', version: '1.0.1', expected: ['MIT'] },
+      { package_manager: :npm, name: 'vary', version: '1.1.2', expected: ['MIT'] },
+      { package_manager: :nuget, name: 'NHibernate', version: '5.2.6', expected: ['LGPL-2.1-only'] },
+      { package_manager: :nuget, name: 'System.Security.Principal.Windows', version: '4.3.0', expected: ['Nonstandard'] },
+      { package_manager: :nuget, name: 'jive', version: '0.1.0', expected: ['MIT'] },
+      { package_manager: :pypi, name: 'six', version: '1.14.0', expected: ['MIT'] },
+      { package_manager: :rubygems, name: 'spandx', version: '0.1.0', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'accepts', version: '1.3.7', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'array-flatten', version: '1.1.1', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'body-parser', version: '1.19.0', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'bytes', version: '3.1.0', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'content-disposition', version: '0.5.3', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'content-type', version: '1.0.4', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'cookie', version: '0.4.0', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'cookie-signature', version: '1.0.6', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'debug', version: '2.6.9', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'depd', version: '1.1.2', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'destroy', version: '1.0.4', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'ee-first', version: '1.1.1', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'encodeurl', version: '1.0.2', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'escape-html', version: '1.0.3', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'etag', version: '1.8.1', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'express', version: '4.17.1', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'finalhandler', version: '1.1.2', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'forwarded', version: '0.1.2', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'fresh', version: '0.5.2', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'http-errors', version: '1.7.2', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'iconv-lite', version: '0.4.24', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'inherits', version: '2.0.3', expected: ['ISC'] },
+      { package_manager: :yarn, name: 'ipaddr.js', version: '1.9.1', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'jquery', version: '3.4.0', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'media-typer', version: '0.3.0', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'merge-descriptors', version: '1.0.1', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'methods', version: '1.1.2', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'mime', version: '1.6.0', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'mime-db', version: '1.43.0', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'mime-types', version: '2.1.26', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'ms', version: '2.0.0', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'negotiator', version: '0.6.2', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'on-finished', version: '2.3.0', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'parseurl', version: '1.3.3', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'path-to-regexp', version: '0.1.7', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'proxy-addr', version: '2.0.6', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'qs', version: '6.7.0', expected: ['BSD-3-Clause'] },
+      { package_manager: :yarn, name: 'range-parser', version: '1.2.1', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'raw-body', version: '2.4.0', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'safe-buffer', version: '5.1.2', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'safer-buffer', version: '2.1.2', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'send', version: '0.17.1', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'serve-static', version: '1.14.1', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'setprototypeof', version: '1.1.1', expected: ['ISC'] },
+      { package_manager: :yarn, name: 'statuses', version: '1.5.0', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'toidentifier', version: '1.0.0', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'type-is', version: '1.6.18', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'unpipe', version: '1.0.0', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'utils-merge', version: '1.0.1', expected: ['MIT'] },
+      { package_manager: :yarn, name: 'vary', version: '1.1.2', expected: ['MIT'] },
+    ].each do |item|
+      context "#{item[:package_manager]}-#{item[:name]}-#{item[:version]}" do
+        subject { described_class.new(package_manager: item[:package_manager], name: item[:name], version: item[:version]) }
 
-      let(:results) do
-        VCR.use_cassette("#{item[:package_manager]}-#{item[:name]}-#{item[:version]}") do
-          subject.licenses
+        let(:results) do
+          VCR.use_cassette("#{item[:package_manager]}-#{item[:name]}-#{item[:version]}") do
+            subject.licenses
+          end
         end
-      end
 
-      it { expect(results.map(&:id)).to match_array(item[:expected]) }
+        it { expect(results.map(&:id)).to match_array(item[:expected]) }
+      end
     end
   end
+
+  describe "#managed_by?" do
+    subject { described_class.new(package_manager: :nuget, name: 'jive', version: '0.1.0') }
+
+    specify { expect(subject).to be_managed_by(:nuget) }
+    specify { expect(subject).to be_managed_by('nuget') }
+    specify { expect(subject).not_to be_managed_by('rubygems') }
+    specify { expect(subject).not_to be_managed_by(nil) }
+    specify { expect(subject).not_to be_managed_by(:rubygems) }
+  end
 end
diff --git a/spec/unit/dotnet/license_plugin_spec.rb b/spec/unit/dotnet/license_plugin_spec.rb
new file mode 100644
index 0000000..fb4e73a
--- /dev/null
+++ b/spec/unit/dotnet/license_plugin_spec.rb
@@ -0,0 +1,29 @@
+RSpec.describe Spandx::Dotnet::LicensePlugin do
+  subject { described_class.new }
+
+  describe "#enhance" do
+    context "when the dependency is not managed by the `nuget` package manager" do
+      let(:dependency) { ::Spandx::Core::Dependency.new(package_manager: :rubygems, name: 'jive', version: '0.1.0') }
+
+      specify { expect(subject.enhance(dependency)).to eql(dependency) }
+    end
+
+    [
+      { package_manager: :nuget, name: 'NHibernate', version: '5.2.6', expected: ['LGPL-2.1-only'] },
+      { package_manager: :nuget, name: 'System.Security.Principal.Windows', version: '4.3.0', expected: ['Nonstandard'] },
+      { package_manager: :nuget, name: 'jive', version: '0.1.0', expected: ['MIT'] },
+    ].each do |item|
+      context "#{item[:package_manager]}-#{item[:name]}-#{item[:version]}" do
+        let(:dependency) { ::Spandx::Core::Dependency.new(package_manager: item[:package_manager], name: item[:name], version: item[:version]) }
+
+        let(:results) do
+          VCR.use_cassette("#{item[:package_manager]}-#{item[:name]}-#{item[:version]}") do
+            subject.enhance(dependency).licenses
+          end
+        end
+
+        specify { expect(results.map(&:id)).to match_array(item[:expected]) }
+      end
+    end
+  end
+end