update detected paths for Nuget

[#155410833]

Signed-off-by: Vikram Yadav <vyadav@pivotal.io>

lib/license_finder/package_managers/nuget.rb

@@ -25,7 +25,8 @@ def dependencies
     def possible_package_paths
       path = project_path.join('vendor/*.nupkg')
       nuget_dir = Dir[path].map { |pkg| File.dirname(pkg) }.uniq
-      possible_paths = [project_path.join('.nuget'), project_path.join('packages')]
+
+      possible_paths = [project_path.join('packages.config'), project_path.join('.nuget')]
       possible_paths.unshift(Pathname(nuget_dir.first)) unless nuget_dir.empty?
       possible_paths
     end

spec/lib/license_finder/package_managers/nuget_spec.rb

@@ -58,14 +58,26 @@ def self.broken_fakefs?
         end
       end
 
-      context 'when vendor and .nuget are not present but a packages directory exists' do
+      context 'when .nuget exists' do
         before do
-          FileUtils.mkdir_p 'app/packages'
+          FileUtils.mkdir_p 'app/.nuget'
+        end
+
+        it 'returns the packages.config file path' do
+          nuget = Nuget.new project_path: Pathname.new('app')
+          expect(nuget.detected_package_path).to eq Pathname('app/.nuget')
+        end
+      end
+
+      context 'when vendor/*.nupkg and .nuget/ are not present but packages.config file exists' do
+        before do
+          FileUtils.mkdir_p 'app'
+          FileUtils.touch 'app/packages.config'
         end
 
-        it 'returns the packages directory' do
+        it 'returns the packages.config file' do
           nuget = Nuget.new project_path: Pathname.new('app')
-          expect(nuget.detected_package_path).to eq Pathname('app/packages')
+          expect(nuget.detected_package_path).to eq Pathname('app/packages.config')
         end
       end
     end

spec/support/shared_examples_for_package_manager.rb

@@ -4,6 +4,7 @@ module LicenseFinder
 
     it { expect(described_class.ancestors).to include PackageManager }
     it { expect(Scanner::PACKAGE_MANAGERS).to include described_class }
+
     describe '.active?' do
       before do
         allow_any_instance_of(described_class).to receive(:go_files_exist?).and_return(true)