/
multiline_method_call_indentation_spec.rb
1116 lines (983 loc) · 27 KB
/
multiline_method_call_indentation_spec.rb
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# frozen_string_literal: true
RSpec.describe RuboCop::Cop::Layout::MultilineMethodCallIndentation, :config do
let(:config) do
merged = RuboCop::ConfigLoader
.default_configuration['Layout/MultilineMethodCallIndentation']
.merge(cop_config)
.merge('IndentationWidth' => cop_indent)
RuboCop::Config
.new('Layout/MultilineMethodCallIndentation' => merged,
'Layout/IndentationWidth' => { 'Width' => indentation_width })
end
let(:indentation_width) { 2 }
let(:cop_indent) { nil } # use indentation width from Layout/IndentationWidth
shared_examples 'common' do
it 'accepts indented methods in LHS of []= assignment' do
expect_no_offenses(<<~RUBY)
a
.b[c] = 0
RUBY
end
it 'accepts indented methods inside and outside a block' do
expect_no_offenses(<<~RUBY)
a = b.map do |c|
c
.b
.d do
x
.y
end
end
RUBY
end
it 'accepts indentation relative to first receiver' do
expect_no_offenses(<<~RUBY)
node
.children.map { |n| string_source(n) }.compact
.any? { |s| preferred.any? { |d| s.include?(d) } }
RUBY
end
it 'accepts indented methods in ordinary statement' do
expect_no_offenses(<<~RUBY)
a.
b
RUBY
end
it 'accepts no extra indentation of third line' do
expect_no_offenses(<<~RUBY)
a.
b.
c
RUBY
end
it 'accepts indented methods in for body' do
expect_no_offenses(<<~RUBY)
for x in a
something.
something_else
end
RUBY
end
it 'accepts alignment inside a grouped expression' do
expect_no_offenses(<<~RUBY)
(a.
b)
RUBY
end
it 'accepts an expression where the first method spans multiple lines' do
expect_no_offenses(<<~RUBY)
subject.each do |item|
result = resolve(locale) and return result
end.a
RUBY
end
it 'accepts any indentation of parameters to #[]' do
expect_no_offenses(<<~RUBY)
payment = Models::IncomingPayments[
id: input['incoming-payment-id'],
user_id: @user[:id]]
RUBY
end
it "doesn't crash on unaligned multiline lambdas" do
expect_no_offenses(<<~RUBY)
MyClass.(my_args)
.my_method
RUBY
end
it 'accepts alignment of method with assignment and operator-like method' do
expect_no_offenses(<<~RUBY)
query = x.|(
foo,
bar
)
RUBY
end
end
shared_examples 'common for aligned and indented' do
it 'accepts even indentation of consecutive lines in typical RSpec code' do
expect_no_offenses(<<~RUBY)
expect { Foo.new }.
to change { Bar.count }.
from(1).to(2)
RUBY
end
it 'registers an offense and corrects no indentation of second line' do
expect_offense(<<~RUBY)
a.
b
^ Use 2 (not 0) spaces for indenting an expression spanning multiple lines.
RUBY
expect_correction(<<~RUBY)
a.
b
RUBY
end
it 'registers an offense and corrects 3 spaces indentation of 2nd line' do
expect_offense(<<~RUBY)
a.
b
^ Use 2 (not 3) spaces for indenting an expression spanning multiple lines.
c.
d
^ Use 2 (not 3) spaces for indenting an expression spanning multiple lines.
RUBY
expect_correction(<<~RUBY)
a.
b
c.
d
RUBY
end
it 'registers an offense and corrects extra indentation of third line' do
expect_offense(<<~RUBY)
a.
b.
c
^ Use 2 (not 4) spaces for indenting an expression spanning multiple lines.
RUBY
expect_correction(<<~RUBY)
a.
b.
c
RUBY
end
it 'registers an offense and corrects the emacs ruby-mode 1.1 ' \
'indentation of an expression in an array' do
expect_offense(<<~RUBY)
[
a.
b
^ Use 2 (not 0) spaces for indenting an expression spanning multiple lines.
]
RUBY
expect_correction(<<~RUBY)
[
a.
b
]
RUBY
end
it 'registers an offense and corrects extra indentation of 3rd line ' \
'in typical RSpec code' do
expect_offense(<<~RUBY)
expect { Foo.new }.
to change { Bar.count }.
from(1).to(2)
^^^^ Use 2 (not 6) spaces for indenting an expression spanning multiple lines.
RUBY
expect_correction(<<~RUBY)
expect { Foo.new }.
to change { Bar.count }.
from(1).to(2)
RUBY
end
it 'registers an offense and corrects proc call without a selector' do
expect_offense(<<~RUBY)
a
.(args)
^^ Use 2 (not 1) spaces for indenting an expression spanning multiple lines.
RUBY
expect_correction(<<~RUBY)
a
.(args)
RUBY
end
it 'registers an offense and corrects one space indentation of 2nd line' do
expect_offense(<<~RUBY)
a
.b
^^ Use 2 (not 1) spaces for indenting an expression spanning multiple lines.
RUBY
expect_correction(<<~RUBY)
a
.b
RUBY
end
end
context 'when EnforcedStyle is aligned' do
let(:cop_config) { { 'EnforcedStyle' => 'aligned' } }
include_examples 'common'
include_examples 'common for aligned and indented'
it "doesn't fail on unary operators" do
expect_offense(<<~RUBY)
def foo
!0
.nil?
^^^^^ Use 2 (not 0) spaces for indenting an expression spanning multiple lines.
end
RUBY
end
# We call it semantic alignment when a dot is aligned with the first dot in
# a chain of calls, and that first dot does not begin its line.
context 'for semantic alignment' do
it 'accepts method being aligned with method' do
expect_no_offenses(<<~RUBY)
User.all.first
.age.to_s
RUBY
end
it 'accepts methods being aligned with method that is an argument' do
expect_no_offenses(<<~RUBY)
authorize scope.includes(:user)
.where(name: 'Bob')
.order(:name)
RUBY
end
context '>= Ruby 2.7', :ruby27 do
it 'accepts methods being aligned with method that is an argument' \
'when using numbered parameter' do
expect_no_offenses(<<~RUBY)
File.read('data.yml')
.then { YAML.safe_load _1 }
.transform_values(&:downcase)
RUBY
end
end
it 'accepts methods being aligned with method that is an argument in ' \
'assignment' do
expect_no_offenses(<<~RUBY)
user = authorize scope.includes(:user)
.where(name: 'Bob')
.order(:name)
RUBY
end
it 'accepts method being aligned with method in assignment' do
expect_no_offenses(<<~RUBY)
age = User.all.first
.age.to_s
RUBY
end
it 'accepts aligned method even when an aref is in the chain' do
expect_no_offenses(<<~RUBY)
foo = '123'.a
.b[1]
.c
RUBY
end
it 'accepts aligned method even when an aref is first in the chain' do
expect_no_offenses(<<~RUBY)
foo = '123'[1].a
.b
.c
RUBY
end
it "doesn't fail on a chain of aref calls" do
expect_no_offenses('a[1][2][3]')
end
it 'accepts aligned method with blocks in operation assignment' do
expect_no_offenses(<<~RUBY)
@comment_lines ||=
src.comments
.select { |c| begins_its_line?(c) }
.map { |c| c.loc.line }
RUBY
end
context 'target_ruby_version >= 2.5', :ruby25 do
it 'accepts key access to hash' do
expect_no_offenses(<<~RUBY)
hash[key] { 10 / 0 }
.fmap { |x| x * 3 }
RUBY
end
end
it 'accepts 3 aligned methods' do
expect_no_offenses(<<~RUBY)
a_class.new(severity, location, 'message', 'CopName')
.severity
.level
RUBY
end
it 'registers an offense and corrects unaligned methods' do
expect_offense(<<~RUBY)
User.a
.b
^^ Align `.b` with `.a` on line 1.
.c
^^ Align `.c` with `.a` on line 1.
RUBY
expect_correction(<<~RUBY)
User.a
.b
.c
RUBY
end
it 'registers an offense and corrects unaligned method in block body' do
expect_offense(<<~RUBY)
a do
b.c
.d
^^ Align `.d` with `.c` on line 2.
end
RUBY
expect_correction(<<~RUBY)
a do
b.c
.d
end
RUBY
end
end
it 'accepts correctly aligned methods in operands' do
expect_no_offenses(<<~RUBY)
1 + a
.b
.c + d.
e
RUBY
end
it 'accepts correctly aligned methods in assignment' do
expect_no_offenses(<<~RUBY)
def investigate(processed_source)
@modifier = processed_source
.tokens
.select { |t| t.type == :k }
.map(&:pos)
end
RUBY
end
it 'accepts aligned methods in if + assignment' do
expect_no_offenses(<<~RUBY)
KeyMap = Hash.new do |map, key|
value = if key.respond_to?(:to_str)
key
else
key.to_s.split('_').
each { |w| w.capitalize! }.
join('-')
end
keymap_mutex.synchronize { map[key] = value }
end
RUBY
end
it 'accepts indented method when there is nothing to align with' do
expect_no_offenses(<<~RUBY)
expect { custom_formatter_class('NonExistentClass') }
.to raise_error(NameError)
RUBY
end
it 'registers an offense and corrects one space indentation of 3rd line' do
expect_offense(<<~RUBY)
a
.b
.c
^^ Use 2 (not 1) spaces for indenting an expression spanning multiple lines.
RUBY
expect_correction(<<~RUBY)
a
.b
.c
RUBY
end
it 'accepts indented and aligned methods in binary operation' do
# b is indented relative to a
# .d is aligned with c
expect_no_offenses(<<~RUBY)
a.
b + c
.d
RUBY
end
it 'accepts aligned methods in if condition' do
expect_no_offenses(<<~RUBY)
if a.
b
something
end
RUBY
end
it 'accepts aligned methods in a begin..end block' do
expect_no_offenses(<<~RUBY)
@dependencies ||= begin
DEFAULT_DEPRUBYENCIES
.reject { |e| e }
.map { |e| e }
end
RUBY
end
it 'registers an offense and corrects misaligned methods in if condition' do
expect_offense(<<~RUBY)
if a.
b
^ Align `b` with `a.` on line 1.
something
end
RUBY
expect_correction(<<~RUBY)
if a.
b
something
end
RUBY
end
it 'does not check binary operations when string wrapped with backslash' do
expect_no_offenses(<<~'RUBY')
flash[:error] = 'Here is a string ' \
'That spans' <<
'multiple lines'
RUBY
end
it 'does not check binary operations when string wrapped with +' do
expect_no_offenses(<<~RUBY)
flash[:error] = 'Here is a string ' +
'That spans' <<
'multiple lines'
RUBY
end
it 'registers an offense and corrects misaligned method in []= call' do
expect_offense(<<~RUBY)
flash[:error] = here_is_a_string.
that_spans.
multiple_lines
^^^^^^^^^^^^^^ Align `multiple_lines` with `here_is_a_string.` on line 1.
RUBY
expect_correction(<<~RUBY)
flash[:error] = here_is_a_string.
that_spans.
multiple_lines
RUBY
end
it 'registers an offense and corrects misaligned methods ' \
'in unless condition' do
expect_offense(<<~RUBY)
unless a
.b
^^ Align `.b` with `a` on line 1.
something
end
RUBY
expect_correction(<<~RUBY)
unless a
.b
something
end
RUBY
end
it 'registers an offense and corrects misaligned methods ' \
'in while condition' do
expect_offense(<<~RUBY)
while a.
b
^ Align `b` with `a.` on line 1.
something
end
RUBY
expect_correction(<<~RUBY)
while a.
b
something
end
RUBY
end
it 'registers an offense and corrects misaligned methods ' \
'in until condition' do
expect_offense(<<~RUBY)
until a.
b
^ Align `b` with `a.` on line 1.
something
end
RUBY
expect_correction(<<~RUBY)
until a.
b
something
end
RUBY
end
it 'accepts aligned method in return' do
expect_no_offenses(<<~RUBY)
def a
return b.
c
end
RUBY
end
it 'accepts aligned method in assignment + block + assignment' do
expect_no_offenses(<<~RUBY)
a = b do
c.d = e.
f
end
RUBY
end
it 'accepts aligned methods in assignment' do
expect_no_offenses(<<~RUBY)
formatted_int = int_part
.to_s
.reverse
.gsub(/...(?=.)/, '&_')
RUBY
end
it 'registers an offense and corrects misaligned methods ' \
'in local variable assignment' do
expect_offense(<<~RUBY)
a = b.c.
d
^ Align `d` with `b.c.` on line 1.
RUBY
expect_correction(<<~RUBY)
a = b.c.
d
RUBY
end
it 'accepts aligned methods in constant assignment' do
expect_no_offenses(<<~RUBY)
A = b
.c
RUBY
end
it 'accepts aligned methods in operator assignment' do
expect_no_offenses(<<~RUBY)
a +=
b
.c
RUBY
end
it 'registers an offense and corrects unaligned methods in assignment' do
expect_offense(<<~RUBY)
bar = Foo
.a
^^ Align `.a` with `Foo` on line 1.
.b(c)
RUBY
expect_correction(<<~RUBY)
bar = Foo
.a
.b(c)
RUBY
end
end
shared_examples 'both indented* styles' do
# We call it semantic alignment when a dot is aligned with the first dot in
# a chain of calls, and that first dot does not begin its line. But for the
# indented style, it doesn't come into play.
context 'for possible semantic alignment' do
it 'accepts indented methods' do
expect_no_offenses(<<~RUBY)
User.a
.c
.b
RUBY
end
end
end
context 'when EnforcedStyle is indented_relative_to_receiver' do
let(:cop_config) { { 'EnforcedStyle' => 'indented_relative_to_receiver' } }
include_examples 'common'
include_examples 'both indented* styles'
it "doesn't fail on unary operators" do
expect_offense(<<~RUBY)
def foo
!0
.nil?
^^^^^ Indent `.nil?` 2 spaces more than `0` on line 2.
end
RUBY
end
it 'accepts correctly indented methods in operation' do
expect_no_offenses(<<~RUBY)
1 + a
.b
.c
RUBY
end
it 'accepts indentation of consecutive lines in typical RSpec code' do
expect_no_offenses(<<~RUBY)
expect { Foo.new }.to change { Bar.count }
.from(1).to(2)
RUBY
end
it 'registers an offense and corrects no indentation of second line' do
expect_offense(<<~RUBY)
a.
b
^ Indent `b` 2 spaces more than `a` on line 1.
RUBY
expect_correction(<<~RUBY)
a.
b
RUBY
end
it 'registers an offense and corrects extra indentation of 3rd line ' \
'in typical RSpec code' do
expect_offense(<<~RUBY)
expect { Foo.new }.
to change { Bar.count }.
from(1).to(2)
^^^^ Indent `from` 2 spaces more than `change { Bar.count }` on line 2.
RUBY
expect_correction(<<~RUBY)
expect { Foo.new }.
to change { Bar.count }.
from(1).to(2)
RUBY
end
it 'registers an offense and corrects proc call without a selector' do
expect_offense(<<~RUBY)
a
.(args)
^^ Indent `.(` 2 spaces more than `a` on line 1.
RUBY
expect_correction(<<~RUBY)
a
.(args)
RUBY
end
it 'does not register an offense when multiline method chain has expected indent width and ' \
'the method is preceded by splat' do
expect_no_offenses(<<~RUBY)
[
*foo
.bar(
arg)
]
RUBY
end
it 'does not register an offense when multiline method chain has expected indent width and ' \
'the method is preceded by double splat' do
expect_no_offenses(<<~RUBY)
[
**foo
.bar(
arg)
]
RUBY
end
it 'registers an offense and corrects one space indentation of 2nd line' do
expect_offense(<<~RUBY)
a
.b
^^ Indent `.b` 2 spaces more than `a` on line 1.
RUBY
expect_correction(<<~RUBY)
a
.b
RUBY
end
it 'registers an offense and corrects 3 spaces indentation ' \
'of second line' do
expect_offense(<<~RUBY)
a.
b
^ Indent `b` 2 spaces more than `a` on line 1.
c.
d
^ Indent `d` 2 spaces more than `c` on line 3.
RUBY
expect_correction(<<~RUBY)
a.
b
c.
d
RUBY
end
it 'registers an offense and corrects extra indentation of 3rd line' do
expect_offense(<<~RUBY)
a.
b.
c
^ Indent `c` 2 spaces more than `a` on line 1.
RUBY
expect_correction(<<~RUBY)
a.
b.
c
RUBY
end
it 'registers an offense and corrects the emacs ruby-mode 1.1 ' \
'indentation of an expression in an array' do
expect_offense(<<~RUBY)
[
a.
b
^ Indent `b` 2 spaces more than `a` on line 2.
]
RUBY
expect_correction(<<~RUBY)
[
a.
b
]
RUBY
end
end
context 'when EnforcedStyle is indented' do
let(:cop_config) { { 'EnforcedStyle' => 'indented' } }
include_examples 'common'
include_examples 'common for aligned and indented'
include_examples 'both indented* styles'
it "doesn't fail on unary operators" do
expect_offense(<<~RUBY)
def foo
!0
.nil?
^^^^^ Use 2 (not 0) spaces for indenting an expression spanning multiple lines.
end
RUBY
end
it 'accepts correctly indented methods in operation' do
expect_no_offenses(<<~RUBY)
1 + a
.b
.c
RUBY
end
it 'registers an offense and corrects 1 space indentation of 3rd line' do
expect_offense(<<~RUBY)
a
.b
.c
^^ Use 2 (not 1) spaces for indenting an expression spanning multiple lines.
RUBY
expect_correction(<<~RUBY)
a
.b
.c
RUBY
end
it 'accepts indented methods in if condition' do
expect_no_offenses(<<~RUBY)
if a.
b
something
end
RUBY
end
it 'registers an offense and corrects 0 space indentation inside square brackets' do
expect_offense(<<~RUBY)
foo[
bar
.baz
^^^^ Use 2 (not 0) spaces for indenting an expression spanning multiple lines.
]
RUBY
expect_correction(<<~RUBY)
foo[
bar
.baz
]
RUBY
end
it 'registers an offense and corrects aligned methods in if condition' do
expect_offense(<<~RUBY)
if a.
b
^ Use 4 (not 3) spaces for indenting a condition in an `if` statement spanning multiple lines.
something
end
RUBY
expect_correction(<<~RUBY)
if a.
b
something
end
RUBY
end
it 'accepts normal indentation of method parameters' do
expect_no_offenses(<<~RUBY)
Parser::Source::Range.new(expr.source_buffer,
begin_pos,
begin_pos + line.length)
RUBY
end
it 'accepts any indentation of method parameters' do
expect_no_offenses(<<~RUBY)
a(b.
c
.d)
RUBY
end
it 'accepts normal indentation inside grouped expression' do
expect_no_offenses(<<~RUBY)
arg_array.size == a.size && (
arg_array == a ||
arg_array.map(&:children) == a.map(&:children)
)
RUBY
end
[
%w[an if],
%w[an unless],
%w[a while],
%w[an until]
].each do |article, keyword|
it "accepts double indentation of #{keyword} condition" do
expect_no_offenses(<<~RUBY)
#{keyword} receiver.
nil? &&
!args.empty?
end
RUBY
end
it "registers an offense for a 2 space indentation of #{keyword} " \
'condition' do
expect_offense(<<~RUBY)
#{keyword} receiver
.nil? &&
^^^^^ Use 4 (not 2) spaces for indenting a condition in #{article} `#{keyword}` statement spanning multiple lines.
!args.empty?
end
RUBY
end
it "accepts indented methods in #{keyword} body" do
expect_no_offenses(<<~RUBY)
#{keyword} a
something.
something_else
end
RUBY
end
end
%w[unless if].each do |keyword|
it "accepts special indentation of return #{keyword} condition" do
expect_no_offenses(<<~RUBY)
return #{keyword} receiver.nil? &&
!args.empty? &&
FORBIDDEN_METHODS.include?(method_name)
RUBY
end
end
it 'registers an offense and corrects wrong indentation ' \
'of for expression' do
expect_offense(<<~RUBY)
for n in a.
b
^ Use 4 (not 2) spaces for indenting a collection in a `for` statement spanning multiple lines.
end
RUBY
expect_correction(<<~RUBY)
for n in a.
b
end
RUBY
end
it 'accepts special indentation of for expression' do
expect_no_offenses(<<~RUBY)
for n in a.
b
end
RUBY
end
shared_examples 'assignment' do |lhs|
it "accepts indentation of assignment to #{lhs} with rhs on same line" do
expect_no_offenses(<<~RUBY)
#{lhs} = int_part
.abs
.to_s
.reverse
.gsub(/...(?=.)/, '&_')
.reverse
RUBY
end
it "accepts indentation of assignment to #{lhs} with newline after =" do
expect_no_offenses(<<~RUBY)
#{lhs} =
int_part
.abs
.to_s
RUBY
end
end