/
documentation_spec.rb
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documentation_spec.rb
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# frozen_string_literal: true
RSpec.describe RuboCop::Cop::Style::Documentation, :config do
let(:config) do
RuboCop::Config.new('Style/CommentAnnotation' => {
'Keywords' => %w[TODO FIXME OPTIMIZE HACK REVIEW]
})
end
it 'registers an offense for non-empty class' do
expect_offense(<<~RUBY)
class MyClass
^^^^^^^^^^^^^ Missing top-level documentation comment for `class MyClass`.
def method
end
end
RUBY
end
it 'registers an offense for non-empty cbase class' do
expect_offense(<<~RUBY)
class ::MyClass
^^^^^^^^^^^^^^^ Missing top-level documentation comment for `class MyClass`.
def method
end
end
RUBY
end
it 'does not consider comment followed by empty line to be class documentation' do
expect_offense(<<~RUBY)
# Copyright 2014
# Some company
class MyClass
^^^^^^^^^^^^^ Missing top-level documentation comment for `class MyClass`.
def method
end
end
RUBY
end
it 'registers an offense for non-namespace' do
expect_offense(<<~RUBY)
module MyModule
^^^^^^^^^^^^^^^ Missing top-level documentation comment for `module MyModule`.
def method
end
end
RUBY
end
it 'registers an offense for empty module without documentation' do
# Because why would you have an empty module? It requires some
# explanation.
expect_offense(<<~RUBY)
module Test
^^^^^^^^^^^ Missing top-level documentation comment for `module Test`.
end
RUBY
end
it 'accepts non-empty class with documentation' do
expect_no_offenses(<<~RUBY)
# class comment
class MyClass
def method
end
end
RUBY
end
it 'registers an offense for non-empty class with annotation comment' do
expect_offense(<<~RUBY)
# OPTIMIZE: Make this faster.
class MyClass
^^^^^^^^^^^^^ Missing top-level documentation comment for `class MyClass`.
def method
end
end
RUBY
end
it 'registers an offense for non-empty class with directive comment' do
expect_offense(<<~RUBY)
# rubocop:disable Style/For
class MyClass
^^^^^^^^^^^^^ Missing top-level documentation comment for `class MyClass`.
def method
end
end
RUBY
end
it 'registers offense for non-empty class with frozen string comment' do
expect_offense(<<~RUBY)
# frozen_string_literal: true
class MyClass
^^^^^^^^^^^^^ Missing top-level documentation comment for `class MyClass`.
def method
end
end
RUBY
end
it 'registers an offense for non-empty class with encoding comment' do
expect_offense(<<~RUBY)
# encoding: ascii-8bit
class MyClass
^^^^^^^^^^^^^ Missing top-level documentation comment for `class MyClass`.
def method
end
end
RUBY
end
it 'accepts non-empty class with annotation comment followed by other comment' do
expect_no_offenses(<<~RUBY)
# OPTIMIZE: Make this faster.
# Class comment.
class MyClass
def method
end
end
RUBY
end
it 'accepts non-empty class with comment that ends with an annotation' do
expect_no_offenses(<<~RUBY)
# Does fooing.
# FIXME: Not yet implemented.
class Foo
def initialize
end
end
RUBY
end
it 'accepts non-empty module with documentation' do
expect_no_offenses(<<~RUBY)
# class comment
module MyModule
def method
end
end
RUBY
end
it 'accepts empty class without documentation' do
expect_no_offenses(<<~RUBY)
class MyClass
end
RUBY
end
it 'accepts namespace module without documentation' do
expect_no_offenses(<<~RUBY)
module Test
class A; end
class B; end
end
RUBY
end
it 'accepts namespace class without documentation' do
expect_no_offenses(<<~RUBY)
class Test
class A; end
class B; end
end
RUBY
end
it 'accepts namespace class which defines constants' do
expect_no_offenses(<<~RUBY)
class Test
A = Class.new
B = Class.new(A)
C = Class.new { call_method }
D = 1
end
RUBY
end
it 'accepts namespace module which defines constants' do
expect_no_offenses(<<~RUBY)
module Test
A = Class.new
B = Class.new(A)
C = Class.new { call_method }
D = 1
end
RUBY
end
context 'without documentation' do
context 'with non-empty module' do
context 'with constants visibility declaration content' do
it 'does not register an offense' do
expect_no_offenses(<<~RUBY)
module Namespace
class Private
end
private_constant :Private
end
RUBY
end
end
end
context 'with non-empty class' do
context 'with constants visibility declaration content' do
it 'does not register an offense' do
expect_no_offenses(<<~RUBY)
class Namespace
class Private
end
private_constant :Private
end
RUBY
end
end
end
context 'macro-only class' do
it 'does not register offense with single macro' do
expect_no_offenses(<<~RUBY)
module Foo
extend Bar
end
RUBY
end
it 'does not register offense with multiple macros' do
expect_no_offenses(<<~RUBY)
module Foo
extend A
extend B
include C
end
RUBY
end
it 'registers offense for macro with other methods' do
expect_offense(<<~RUBY)
module Foo
^^^^^^^^^^ Missing top-level documentation comment for `module Foo`.
extend B
include C
def foo; end
end
RUBY
end
end
end
it 'does not raise an error for an implicit match conditional' do
expect do
expect_offense(<<~RUBY)
class Test
^^^^^^^^^^ Missing top-level documentation comment for `class Test`.
if //
end
end
RUBY
end.not_to raise_error
end
it 'registers an offense if the comment line contains code' do
expect_offense(<<~RUBY)
module A # The A Module
class B
^^^^^^^ Missing top-level documentation comment for `class A::B`.
C = 1
def method
end
end
end
RUBY
end
it 'registers an offense for compact-style nested module' do
expect_offense(<<~RUBY)
module A::B
^^^^^^^^^^^ Missing top-level documentation comment for `module A::B`.
C = 1
def method
end
end
RUBY
end
it 'registers an offense for compact-style nested class' do
expect_offense(<<~RUBY)
class A::B
^^^^^^^^^^ Missing top-level documentation comment for `class A::B`.
C = 1
def method
end
end
RUBY
end
it 'registers an offense for a deeply nested class' do
expect_offense(<<~RUBY)
module A::B
module C
class D
class E::F
^^^^^^^^^^ Missing top-level documentation comment for `class A::B::C::D::E::F`.
def method
end
end
end
end
end
RUBY
end
context 'sparse and trailing comments' do
%w[class module].each do |keyword|
it "ignores comments after #{keyword} node end" do
expect_no_offenses(<<~RUBY)
module TestModule
# documentation comment
#{keyword} Test
def method
end
end # decorating comment
end
RUBY
end
it "ignores sparse comments inside #{keyword} node" do
expect_offense(<<~RUBY, keyword: keyword)
module TestModule
%{keyword} Test
^{keyword}^^^^^ Missing top-level documentation comment for `#{keyword} TestModule::Test`.
def method
end
# sparse comment
end
end
RUBY
end
end
end
context 'with # :nodoc:' do
%w[class module].each do |keyword|
it "accepts non-namespace #{keyword} without documentation" do
expect_no_offenses(<<~RUBY)
#{keyword} Test #:nodoc:
def method
end
end
RUBY
end
it "accepts compact-style nested #{keyword} without documentation" do
expect_no_offenses(<<~RUBY)
#{keyword} A::B::Test #:nodoc:
def method
end
end
RUBY
end
it "registers an offense for nested #{keyword} without documentation" do
expect_offense(<<~RUBY, keyword: keyword)
module TestModule #:nodoc:
TEST = 20
%{keyword} Test
^{keyword}^^^^^ Missing top-level documentation comment for `#{keyword} TestModule::Test`.
def method
end
end
end
RUBY
end
context 'with `all` modifier' do
it "accepts nested #{keyword} without documentation" do
expect_no_offenses(<<~RUBY)
module A #:nodoc: all
module B
TEST = 20
#{keyword} Test
TEST = 20
end
end
end
RUBY
end
end
end
context 'on a subclass' do
it 'accepts non-namespace subclass without documentation' do
expect_no_offenses(<<~RUBY)
class Test < Parent #:nodoc:
def method
end
end
RUBY
end
it 'registers an offense for nested subclass without documentation' do
expect_offense(<<~RUBY)
module TestModule #:nodoc:
TEST = 20
class Test < Parent
^^^^^^^^^^ Missing top-level documentation comment for `class TestModule::Test`.
def method
end
end
end
RUBY
end
context 'with `all` modifier' do
it 'accepts nested subclass without documentation' do
expect_no_offenses(<<~RUBY)
module A #:nodoc: all
module B
TEST = 20
class Test < Parent
TEST = 20
end
end
end
RUBY
end
end
describe 'when AllowedConstants is configured' do
before { config['Style/Documentation'] = { 'AllowedConstants' => ['ClassMethods'] } }
it 'ignores the constants in the config' do
expect_no_offenses(<<~RUBY)
module A
module ClassMethods
def do_something
end
end
end
RUBY
end
end
end
end
end