Test type of README file without extension

lib/gitlab/file_detector.rb

@@ -8,7 +8,7 @@ module Gitlab
   module FileDetector
     PATTERNS = {
       # Project files
-      readme: %r{\A(readme|index)[^\/]*\z}i,
+      readme: %r{\A(readme|index)[^/]*\z}i,
       changelog: %r{\A(changelog|history|changes|news)[^/]*\z}i,
       license: %r{\A((un)?licen[sc]e|copying)(\.[^/]+)?\z}i,
       contributing: %r{\Acontributing[^/]*\z}i,

spec/lib/gitlab/file_detector_spec.rb

@@ -15,8 +15,9 @@ describe Gitlab::FileDetector do
 
   describe '.type_of' do
     it 'returns the type of a README file' do
-      %w(README readme INDEX index).each do |filename|
-        %w(.md .adoc).each do |extname|
+      %w[README readme INDEX index].each do |filename|
+        expect(described_class.type_of(filename)).to eq(:readme)
+        %w[.md .adoc .rst].each do |extname|
           expect(described_class.type_of(filename + extname)).to eq(:readme)
         end
       end