iv-org-mirror/shard-ameba
1
0
Fork 0
mirror of https://gitea.invidious.io/iv-org/shard-ameba.git synced 2024-08-15 00:53:29 +00:00
Code Issues Projects Releases Packages Wiki Activity

Extend Lint/UnusedBlockArgument rule with corrections

Browse source
This commit is contained in:
Sijawusz Pur Rahnama 2022-12-19 15:40:59 +01:00
parent f26cd7f823
commit 3586b4242f
2 changed files with 65 additions and 35 deletions
Download patch file Download diff file Expand all files Collapse all files

79
spec/ameba/rule/lint/unused_block_argument_spec.cr
View file

@ -5,105 +5,118 @@ module Ameba::Rule::Lint
describe UnusedBlockArgument do
it "doesn't report if it is an instance var argument" do
s = Source.new %(
expect_no_issues subject, <<-CRYSTAL
class A
def initialize(&@callback)
end
end
)
subject.catch(s).should be_valid
CRYSTAL
end
it "doesn't report if anonymous" do
s = Source.new %(
expect_no_issues subject, <<-CRYSTAL
def method(a, b, c, &)
end
)
subject.catch(s).should be_valid
CRYSTAL
end
it "doesn't report if argument name starts with a `_`" do
s = Source.new %(
expect_no_issues subject, <<-CRYSTAL
def method(a, b, c, &_block)
end
)
subject.catch(s).should be_valid
CRYSTAL
end
it "doesn't report if it is a block and used" do
s = Source.new %(
expect_no_issues subject, <<-CRYSTAL
def method(a, b, c, &block)
block.call
end
)
subject.catch(s).should be_valid
CRYSTAL
end
it "reports if block arg is not used" do
s = Source.new %(
source = expect_issue subject, <<-CRYSTAL
def method(a, b, c, &block)
# ^ error: Unused block argument `block`. [...]
end
)
subject.catch(s).should_not be_valid
CRYSTAL
expect_correction source, <<-CRYSTAL
def method(a, b, c, &_block)
end
CRYSTAL
end
it "reports if unused and there is yield" do
s = Source.new %(
source = expect_issue subject, <<-CRYSTAL
def method(a, b, c, &block)
# ^ error: Use `&` as an argument name to indicate that it won't be referenced.
3.times do |i|
i.try do
yield i
end
end
end
)
subject.catch(s).should_not be_valid
CRYSTAL
expect_correction source, <<-CRYSTAL
def method(a, b, c, &)
3.times do |i|
i.try do
yield i
end
end
end
CRYSTAL
end
it "doesn't report if anonymous and there is yield" do
s = Source.new %(
expect_no_issues subject, <<-CRYSTAL
def method(a, b, c, &)
yield 1
end
)
subject.catch(s).should be_valid
CRYSTAL
end
it "doesn't report if variable is referenced implicitly" do
s = Source.new %(
expect_no_issues subject, <<-CRYSTAL
class Bar < Foo
def method(a, b, c, &block)
super
end
end
)
subject.catch(s).should be_valid
CRYSTAL
end
context "super" do
it "reports if variable is not referenced implicitly by super" do
s = Source.new %(
source = expect_issue subject, <<-CRYSTAL
class Bar < Foo
def method(a, b, c, &block)
# ^ error: Unused block argument `block`. [...]
super a, b, c
end
end
)
subject.catch(s).should_not be_valid
s.issues.first.message.should eq "Unused block argument `block`. If it's necessary, " \
"use `_block` as an argument name to indicate " \
"that it won't be used."
CRYSTAL
expect_correction source, <<-CRYSTAL
class Bar < Foo
def method(a, b, c, &_block)
super a, b, c
end
end
CRYSTAL
end
end
context "macro" do
it "doesn't report if it is a used macro block argument" do
s = Source.new %(
expect_no_issues subject, <<-CRYSTAL
macro my_macro(&block)
{% block %}
end
)
subject.catch(s).should be_valid
CRYSTAL
end
end
end