Merge pull request #866 from Cofense/scattered-setup-message-block-name

Add block name and other lines to `RSpec/ScatteredSetup` message

CHANGELOG.md

@@ -7,6 +7,7 @@
 * Add autocorrect support for `RSpec/ExpectActual` cop. ([@dduugg][], [@pirj][])
 * Add `RSpec/RepeatedExampleGroupBody` cop. ([@lazycoder9][])
 * Add `RSpec/RepeatedExampleGroupDescription` cop. ([@lazycoder9][])
+* Add block name and other lines to `RSpec/ScatteredSetup` message. ([@elebow][])
 
 ## 1.37.1 (2019-12-16)
 
@@ -480,3 +481,4 @@ Compatibility release so users can upgrade RuboCop to 0.51.0. No new features.
 [@ybiquitous]: https://github.com/ybiquitous
 [@dduugg]: https://github.com/dduugg
 [@lazycoder9]: https://github.com/lazycoder9
+[@elebow]: https://github.com/elebow

lib/rubocop/cop/rspec/scattered_setup.rb

@@ -23,25 +23,43 @@ module RSpec
       #   end
       #
       class ScatteredSetup < Cop
-        MSG = 'Do not define multiple hooks in the same example group.'
+        MSG = 'Do not define multiple `%<hook_name>s` hooks in the same '\
+              'example group (also defined on %<lines>s).'
 
         def on_block(node)
           return unless example_group?(node)
 
-          analyzable_hooks(node).each do |repeated_hook|
-            add_offense(repeated_hook)
+          repeated_hooks(node).each do |occurrences|
+            lines = occurrences.map(&:first_line)
+
+            occurrences.each do |occurrence|
+              lines_except_current = lines - [occurrence.first_line]
+              message = format(MSG, hook_name: occurrences.first.method_name,
+                               lines: lines_msg(lines_except_current))
+              add_offense(occurrence, message: message)
+            end
           end
         end
 
-        def analyzable_hooks(node)
-          RuboCop::RSpec::ExampleGroup.new(node)
+        def repeated_hooks(node)
+          hooks = RuboCop::RSpec::ExampleGroup.new(node)
             .hooks
             .select(&:knowable_scope?)
             .group_by { |hook| [hook.name, hook.scope, hook.metadata] }
             .values
             .reject(&:one?)
-            .flatten
-            .map(&:to_node)
+
+          hooks.map do |hook|
+            hook.map(&:to_node)
+          end
+        end
+
+        def lines_msg(numbers)
+          if numbers.size == 1
+            "line #{numbers.first}"
+          else
+            "lines #{numbers.join(', ')}"
+          end
         end
       end
     end

spec/rubocop/cop/rspec/scattered_setup_spec.rb

@@ -7,22 +7,22 @@
     expect_offense(<<-RUBY)
       describe Foo do
         before { bar }
-        ^^^^^^^^^^^^^^ Do not define multiple hooks in the same example group.
+        ^^^^^^^^^^^^^^ Do not define multiple `before` hooks in the same example group (also defined on line 3).
         before { baz }
-        ^^^^^^^^^^^^^^ Do not define multiple hooks in the same example group.
+        ^^^^^^^^^^^^^^ Do not define multiple `before` hooks in the same example group (also defined on line 2).
       end
     RUBY
   end
 
   it 'flags multiple hooks of the same scope with different symbols' do
     expect_offense(<<-RUBY)
       describe Foo do
-        before { bar }
-        ^^^^^^^^^^^^^^ Do not define multiple hooks in the same example group.
-        before(:each) { baz }
-        ^^^^^^^^^^^^^^^^^^^^^ Do not define multiple hooks in the same example group.
-        before(:example) { baz }
-        ^^^^^^^^^^^^^^^^^^^^^^^^ Do not define multiple hooks in the same example group.
+        after { bar }
+        ^^^^^^^^^^^^^ Do not define multiple `after` hooks in the same example group (also defined on lines 3, 4).
+        after(:each) { baz }
+        ^^^^^^^^^^^^^^^^^^^^ Do not define multiple `after` hooks in the same example group (also defined on lines 2, 4).
+        after(:example) { baz }
+        ^^^^^^^^^^^^^^^^^^^^^^^ Do not define multiple `after` hooks in the same example group (also defined on lines 2, 3).
       end
     RUBY
   end
@@ -31,9 +31,9 @@
     expect_offense(<<-RUBY)
       describe Foo do
         before(:all) { bar }
-        ^^^^^^^^^^^^^^^^^^^^ Do not define multiple hooks in the same example group.
+        ^^^^^^^^^^^^^^^^^^^^ Do not define multiple `before` hooks in the same example group (also defined on line 3).
         before(:all) { baz }
-        ^^^^^^^^^^^^^^^^^^^^ Do not define multiple hooks in the same example group.
+        ^^^^^^^^^^^^^^^^^^^^ Do not define multiple `before` hooks in the same example group (also defined on line 2).
       end
     RUBY
   end
@@ -109,13 +109,13 @@
     expect_offense(<<-RUBY)
       describe Foo do
         before(:each, :special_case) { foo }
-        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Do not define multiple hooks in the same example group.
+        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Do not define multiple `before` hooks in the same example group (also defined on lines 3, 4, 5).
         before(:example, :special_case) { bar }
-        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Do not define multiple hooks in the same example group.
+        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Do not define multiple `before` hooks in the same example group (also defined on lines 2, 4, 5).
         before(:example, special_case: true) { bar }
-        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Do not define multiple hooks in the same example group.
+        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Do not define multiple `before` hooks in the same example group (also defined on lines 2, 3, 5).
         before(special_case: true) { bar }
-        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Do not define multiple hooks in the same example group.
+        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Do not define multiple `before` hooks in the same example group (also defined on lines 2, 3, 4).
         before(:example, special_case: false) { bar }
       end
     RUBY