/
sole_nested_conditional_spec.rb
548 lines (484 loc) · 13.4 KB
/
sole_nested_conditional_spec.rb
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# frozen_string_literal: true
RSpec.describe RuboCop::Cop::Style::SoleNestedConditional, :config do
let(:cop_config) { { 'AllowModifier' => false } }
it 'registers an offense and corrects when using nested `if` within `if`' do
expect_offense(<<~RUBY)
if foo
if bar
^^ Consider merging nested conditions into outer `if` conditions.
do_something
end
end
RUBY
expect_correction(<<~RUBY)
if foo && bar
do_something
end
RUBY
end
it 'registers an offense and corrects when using nested `unless` within `if`' do
expect_offense(<<~RUBY)
if foo
unless bar
^^^^^^ Consider merging nested conditions into outer `if` conditions.
do_something
end
end
RUBY
expect_correction(<<~RUBY)
if foo && !bar
do_something
end
RUBY
end
it 'registers an offense and corrects when using nested `if` within `unless`' do
expect_offense(<<~RUBY)
unless foo
if bar
^^ Consider merging nested conditions into outer `unless` conditions.
do_something
end
end
RUBY
expect_correction(<<~RUBY)
if !foo && bar
do_something
end
RUBY
end
it 'registers an offense and corrects when using nested `if` within `unless foo == bar`' do
expect_offense(<<~RUBY)
unless foo == bar
if baz
^^ Consider merging nested conditions into outer `unless` conditions.
do_something
end
end
RUBY
# NOTE: `Style/InverseMethods` cop auto-corrects from `(!foo == bar)` to `foo != bar`.
expect_correction(<<~RUBY)
if !(foo == bar) && baz
do_something
end
RUBY
end
it 'registers an offense and corrects when using nested `unless` within `unless`' do
expect_offense(<<~RUBY)
unless foo
unless bar
^^^^^^ Consider merging nested conditions into outer `unless` conditions.
do_something
end
end
RUBY
expect_correction(<<~RUBY)
if !foo && !bar
do_something
end
RUBY
end
it 'does not register an offense when using nested conditional within `elsif`' do
expect_no_offenses(<<~RUBY)
if foo
elsif bar
if baz
end
end
RUBY
end
it 'registers an offense and corrects when using nested `if` modifier conditional' do
expect_offense(<<~RUBY)
if foo
do_something if bar
^^ Consider merging nested conditions into outer `if` conditions.
end
RUBY
expect_correction(<<~RUBY)
if foo && bar
do_something
end
RUBY
end
it 'registers an offense and corrects when using nested `unless` modifier conditional' do
expect_offense(<<~RUBY)
if foo
do_something unless bar
^^^^^^ Consider merging nested conditions into outer `if` conditions.
end
RUBY
expect_correction(<<~RUBY)
if foo && !bar
do_something
end
RUBY
end
it 'registers an offense and corrects when using nested `unless` modifier with a single expression condition' do
expect_offense(<<~RUBY)
class A
def foo
if h[:a]
h[:b] = true unless h.has_key?(:b)
^^^^^^ Consider merging nested conditions into outer `if` conditions.
end
end
end
RUBY
expect_correction(<<~RUBY)
class A
def foo
if h[:a] && !h.has_key?(:b)
h[:b] = true
end
end
end
RUBY
end
it 'registers an offense and corrects when using nested `unless` modifier multiple conditional' do
expect_offense(<<~RUBY)
if foo
do_something unless bar && baz
^^^^^^ Consider merging nested conditions into outer `if` conditions.
end
RUBY
expect_correction(<<~RUBY)
if foo && !(bar && baz)
do_something
end
RUBY
end
it 'registers an offense and corrects when nested `||` operator condition' do
expect_offense(<<~RUBY)
if foo
if bar || baz
^^ Consider merging nested conditions into outer `if` conditions.
do_something
end
end
RUBY
expect_correction(<<~RUBY)
if foo && (bar || baz)
do_something
end
RUBY
end
it 'registers an offense and corrects when nested `||` operator modifier condition' do
expect_offense(<<~RUBY)
if foo
do_something if bar || baz
^^ Consider merging nested conditions into outer `if` conditions.
end
RUBY
expect_correction(<<~RUBY)
if foo && (bar || baz)
do_something
end
RUBY
end
it 'registers an offense and corrects when using `||` in the outer condition' do
expect_offense(<<~RUBY)
if foo || bar
if baz || qux
^^ Consider merging nested conditions into outer `if` conditions.
do_something
end
end
RUBY
expect_correction(<<~RUBY)
if (foo || bar) && (baz || qux)
do_something
end
RUBY
end
it 'registers an offense and corrects when using `||` in the outer condition' \
'and nested modifier condition ' do
expect_offense(<<~RUBY)
if foo || bar
do_something if baz || qux
^^ Consider merging nested conditions into outer `if` conditions.
end
RUBY
expect_correction(<<~RUBY)
if (foo || bar) && (baz || qux)
do_something
end
RUBY
end
it 'registers an offense and corrects when using `unless` and `||` and parens in the outer condition' \
'and nested modifier condition ' do
expect_offense(<<~RUBY)
unless (foo || bar)
do_something if baz
^^ Consider merging nested conditions into outer `unless` conditions.
end
RUBY
expect_correction(<<~RUBY)
if !(foo || bar) && baz
do_something
end
RUBY
end
it 'registers an offense and corrects when using `unless` and `||` without parens in the outer condition' \
'and nested modifier condition ' do
expect_offense(<<~RUBY)
unless foo || bar
do_something if baz
^^ Consider merging nested conditions into outer `unless` conditions.
end
RUBY
expect_correction(<<~RUBY)
if !(foo || bar) && baz
do_something
end
RUBY
end
it 'registers an offense and corrects when using `unless` and method arguments without parentheses ' \
'in the outer condition and nested modifier condition' do
expect_offense(<<~RUBY)
unless foo.is_a? Foo
do_something if bar
^^ Consider merging nested conditions into outer `unless` conditions.
end
RUBY
expect_correction(<<~RUBY)
if !foo.is_a?(Foo) && bar
do_something
end
RUBY
end
it 'registers an offense and corrects when using `unless` and method arguments with parentheses ' \
'in the outer condition and nested modifier condition' do
expect_offense(<<~RUBY)
unless foo.is_a?(Foo)
do_something if bar
^^ Consider merging nested conditions into outer `unless` conditions.
end
RUBY
expect_correction(<<~RUBY)
if !foo.is_a?(Foo) && bar
do_something
end
RUBY
end
it 'registers an offense and corrects when using `unless` and multiple method arguments with parentheses' \
'in the outer condition and nested modifier condition' do
expect_offense(<<~RUBY)
unless foo.bar arg1, arg2
do_something if baz
^^ Consider merging nested conditions into outer `unless` conditions.
end
RUBY
expect_correction(<<~RUBY)
if !foo.bar(arg1, arg2) && baz
do_something
end
RUBY
end
it 'registers an offense and corrects for multiple nested conditionals' do
expect_offense(<<~RUBY)
if foo
if bar
^^ Consider merging nested conditions into outer `if` conditions.
if baz
^^ Consider merging nested conditions into outer `if` conditions.
do_something
end
end
end
RUBY
expect_correction(<<~RUBY)
if foo && bar && baz
do_something
end
RUBY
end
context 'when disabling `Style/IfUnlessModifier`' do
let(:config) { RuboCop::Config.new('Style/IfUnlessModifier' => { 'Enabled' => false }) }
it 'registers an offense and corrects when using nested conditional and branch contains a comment' do
expect_offense(<<~RUBY)
if foo
# Comment.
if bar
^^ Consider merging nested conditions into outer `if` conditions.
do_something
end
end
RUBY
expect_correction(<<~RUBY)
# Comment.
if foo && bar
do_something
end
RUBY
end
it 'registers an offense and corrects when there are outer and inline comments' do
expect_offense(<<~RUBY)
# Outer comment.
if foo
# Comment.
if bar # nested condition
^^ Consider merging nested conditions into outer `if` conditions.
do_something
end
end
RUBY
expect_correction(<<~RUBY)
# Outer comment.
# Comment.
if foo && bar # nested condition
do_something
end
RUBY
end
end
it 'registers an offense and corrects when using guard conditional with outer comment' do
expect_offense(<<~RUBY)
# Comment.
if foo
do_something if bar
^^ Consider merging nested conditions into outer `if` conditions.
end
RUBY
expect_correction(<<~RUBY)
# Comment.
if foo && bar
do_something
end
RUBY
end
it 'does not register an offense when using nested ternary within conditional' do
expect_no_offenses(<<~RUBY)
if foo
bar ? baz : quux
end
RUBY
end
it 'does not register an offense when no nested conditionals' do
expect_no_offenses(<<~RUBY)
if foo
do_something
end
RUBY
end
it 'does not register an offense when using nested conditional is not the whole body' do
expect_no_offenses(<<~RUBY)
if foo
if bar
do_something
end
do_something_more
end
RUBY
end
it 'does not register an offense when nested conditional has an `else` branch' do
expect_no_offenses(<<~RUBY)
if foo
if bar
do_something
else
do_something_else
end
end
RUBY
end
it 'does not register an offense for nested conditionals when outer conditional has an `else` branch' do
expect_no_offenses(<<~RUBY)
if foo
do_something if bar
else
do_something_else
end
RUBY
end
it 'does not register an offense when using nested modifier on value assigned in single condition' do
expect_no_offenses(<<~RUBY)
if var = foo
do_something if var
end
RUBY
end
it 'does not register an offense when using nested modifier on value assigned in multiple conditions' do
expect_no_offenses(<<~RUBY)
if cond && var = foo
do_something if var
end
RUBY
end
context 'when the inner condition has a send node without parens' do
context 'in guard style' do
it 'registers an offense and corrects' do
expect_offense(<<~RUBY)
if foo
do_something if ok? bar
^^ Consider merging nested conditions into outer `if` conditions.
end
RUBY
expect_correction(<<~RUBY)
if foo && (ok? bar)
do_something
end
RUBY
end
end
context 'in modifier style' do
it 'registers an offense and corrects' do
expect_offense(<<~RUBY)
if foo
if ok? bar
^^ Consider merging nested conditions into outer `if` conditions.
do_something
end
end
RUBY
expect_correction(<<~RUBY)
if foo && (ok? bar)
do_something
end
RUBY
end
end
end
context 'when the inner condition has a send node with parens' do
context 'in guard style' do
it 'registers an offense and corrects' do
expect_offense(<<~RUBY)
if foo
do_something if ok?(bar)
^^ Consider merging nested conditions into outer `if` conditions.
end
RUBY
expect_correction(<<~RUBY)
if foo && ok?(bar)
do_something
end
RUBY
end
end
context 'in modifier style' do
it 'registers an offense and corrects' do
expect_offense(<<~RUBY)
if foo
if ok?(bar)
^^ Consider merging nested conditions into outer `if` conditions.
do_something
end
end
RUBY
expect_correction(<<~RUBY)
if foo && ok?(bar)
do_something
end
RUBY
end
end
end
context 'when AllowModifier is true' do
let(:cop_config) { { 'AllowModifier' => true } }
it 'does not register an offense when using nested modifier conditional' do
expect_no_offenses(<<~RUBY)
if foo
do_something if bar
end
RUBY
end
end
end