Fix bug where team YML files are considered unowned (#32)

* Add failing test

* Fix failing test and update existing tests with new expectations

* Fix bug where team YML files are considered unowned

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    code_ownership (1.30.0)
+    code_ownership (1.31.0)
       code_teams (~> 1.0)
       packs
       sorbet-runtime

code_ownership.gemspec

@@ -1,6 +1,6 @@
 Gem::Specification.new do |spec|
   spec.name          = "code_ownership"
-  spec.version       = '1.30.0'
+  spec.version       = '1.31.0'
   spec.authors       = ['Gusto Engineers']
   spec.email         = ['[email protected]']
   spec.summary       = 'A gem to help engineering teams declare ownership of code'

lib/code_ownership/private.rb

@@ -16,6 +16,7 @@
 require 'code_ownership/private/ownership_mappers/team_globs'
 require 'code_ownership/private/ownership_mappers/package_ownership'
 require 'code_ownership/private/ownership_mappers/js_package_ownership'
+require 'code_ownership/private/ownership_mappers/team_yml_ownership'
 
 module CodeOwnership
   module Private
@@ -64,6 +65,7 @@ def self.mappers
         Private::OwnershipMappers::TeamGlobs.new,
         Private::OwnershipMappers::PackageOwnership.new,
         Private::OwnershipMappers::JsPackageOwnership.new,
+        Private::OwnershipMappers::TeamYmlOwnership.new,
       ]
     end
 

lib/code_ownership/private/ownership_mappers/team_yml_ownership.rb

@@ -0,0 +1,62 @@
+# frozen_string_literal: true
+
+# typed: true
+
+module CodeOwnership
+  module Private
+    module OwnershipMappers
+      class TeamYmlOwnership
+        extend T::Sig
+        include Interface
+
+        @@map_files_to_owners = T.let(@map_files_to_owners, T.nilable(T::Hash[String, T.nilable(::CodeTeams::Team)])) # rubocop:disable Style/ClassVars
+        @@map_files_to_owners = {} # rubocop:disable Style/ClassVars
+        @@codeowners_lines_to_owners = T.let(@codeowners_lines_to_owners, T.nilable(T::Hash[String, T.nilable(::CodeTeams::Team)])) # rubocop:disable Style/ClassVars
+        @@codeowners_lines_to_owners = {} # rubocop:disable Style/ClassVars
+
+        sig do
+          override.
+            params(files: T::Array[String]).
+            returns(T::Hash[String, T.nilable(::CodeTeams::Team)])
+        end
+        def map_files_to_owners(files) # rubocop:disable Lint/UnusedMethodArgument
+          return @@map_files_to_owners if @@map_files_to_owners&.keys && @@map_files_to_owners.keys.count > 0
+
+          @@map_files_to_owners = CodeTeams.all.each_with_object({}) do |team, map| # rubocop:disable Style/ClassVars
+            map[team.config_yml] = team
+          end
+        end
+
+        sig do
+          override.params(file: String).
+            returns(T.nilable(::CodeTeams::Team))
+        end
+        def map_file_to_owner(file)
+          map_files_to_owners([file])[file]
+        end
+
+        sig do
+          override.returns(T::Hash[String, T.nilable(::CodeTeams::Team)])
+        end
+        def codeowners_lines_to_owners
+          return @@codeowners_lines_to_owners if @@codeowners_lines_to_owners&.keys && @@codeowners_lines_to_owners.keys.count > 0
+
+          @@codeowners_lines_to_owners = CodeTeams.all.each_with_object({}) do |team, map| # rubocop:disable Style/ClassVars
+            map[team.config_yml] = team
+          end
+        end
+
+        sig { override.void }
+        def bust_caches!
+          @@codeowners_lines_to_owners = {} # rubocop:disable Style/ClassVars
+          @@map_files_to_owners = {} # rubocop:disable Style/ClassVars
+        end
+
+        sig { override.returns(String) }
+        def description
+          'Team YML ownership'
+        end
+      end
+    end
+  end
+end

spec/lib/code_ownership_spec.rb

@@ -189,6 +189,9 @@
 
               # Owner metadata key in package.json
               /frontend/javascripts/packages/my_other_package/**/** @MyOrg/bar-team
+
+              # Team YML ownership
+              /config/teams/bar.yml @MyOrg/bar-team
             EXPECTED
           end
 
@@ -220,6 +223,9 @@
 
                 # Owner metadata key in package.json
                 /frontend/javascripts/packages/my_other_package/**/** @MyOrg/bar-team
+
+                # Team YML ownership
+                /config/teams/bar.yml @MyOrg/bar-team
               EXPECTED
             end
           end
@@ -428,6 +434,9 @@
 
               # Owner metadata key in package.json
               /frontend/javascripts/packages/my_other_package/**/** @MyOrg/bar-team
+
+              # Team YML ownership
+              /config/teams/bar.yml @MyOrg/bar-team
             CODEOWNERS
 
             expect_any_instance_of(codeowners_validation).to_not receive(:`) # rubocop:disable RSpec/AnyInstance
@@ -486,6 +495,8 @@
               # Owner metadata key in package.json
               /frontend/javascripts/packages/my_other_package/**/** @MyOrg/bar-team
 
+              # Team YML ownership
+              /config/teams/bar.yml @MyOrg/bar-team
             CODEOWNERS
 
             expect_any_instance_of(codeowners_validation).to_not receive(:`) # rubocop:disable RSpec/AnyInstance
@@ -530,6 +541,8 @@
               # Owner metadata key in package.json
               /frontend/javascripts/packages/my_other_package/**/** @MyOrg/bar-team
 
+              # Team YML ownership
+              /config/teams/bar.yml @MyOrg/bar-team
             CODEOWNERS
 
             expect_any_instance_of(codeowners_validation).to_not receive(:`) # rubocop:disable RSpec/AnyInstance
@@ -736,6 +749,10 @@
       expect(CodeOwnership.for_file('frontend/javascripts/packages/my_other_package/my_file.jsx')).to eq CodeTeams.find('Bar')
     end
 
+    it 'maps a team YML to be owned by the team itself' do
+      expect(CodeOwnership.for_file('config/teams/bar.yml')).to eq CodeTeams.find('Bar')
+    end
+
     describe 'path formatting expectations' do
       # All file paths must be clean paths relative to the root: https://apidock.com/ruby/Pathname/cleanpath
       it 'will not find the ownership of a file that is not a cleanpath' do
@@ -996,6 +1013,9 @@
 
         ## Owner metadata key in package.json
         - frontend/javascripts/packages/my_other_package/**/**
+
+        ## Team YML ownership
+        - config/teams/bar.yml
       OWNERSHIP
     end
 
@@ -1024,6 +1044,9 @@
 
         ## Owner metadata key in package.json
         This team owns nothing in this category.
+
+        ## Team YML ownership
+        - config/teams/foo.yml
       OWNERSHIP
     end
     end