shard-ameba/spec/ameba/rule/literal_in_interpolation_spec.cr
2017-11-08 00:02:32 +02:00

41 lines
983 B
Crystal

require "../../spec_helper"
module Ameba::Rule
subject = LiteralInInterpolation.new
describe LiteralInInterpolation do
it "passes with good interpolation examples" do
s = Source.new %q(
name = "Ary"
"Hello, #{name}"
"#{name}"
"Name size: #{name.size}"
)
subject.catch(s).should be_valid
end
it "fails if there is useless interpolation" do
[
%q("#{:Ary}"),
%q("#{[1, 2, 3]}"),
%q("#{true}"),
%q("#{false}"),
%q("here are #{4} cats"),
].each do |str|
subject.catch(Source.new str).should_not be_valid
end
end
it "reports rule, pos and message" do
s = Source.new %q("#{4}"), "source.cr"
subject.catch(s).should_not be_valid
error = s.errors.first
error.rule.should_not be_nil
error.location.to_s.should eq "source.cr:1:1"
error.message.should eq "Literal value found in interpolation"
end
end
end