shard-ameba/spec/ameba/rule/while_true_spec.cr
Hugo Abonizio b023ae0baa Disallows while true (#22)
* Disallows `while true`

* Add syntax highlighting in documentation

* Replace `while true` occurrencies

* Add WhileTrue rule to config sample
2017-11-27 15:35:15 +02:00

42 lines
855 B
Crystal

require "../../spec_helper"
valid_source = <<-EOF
a = 1
loop do
a += 1
break if a > 5
end
EOF
invalid_source = <<-EOF
a = 1
while true
a += 1
break if a > 5
end
EOF
module Ameba::Rule
subject = WhileTrue.new
describe WhileTrue do
it "passes if there is no `while true`" do
source = Source.new valid_source
subject.catch(source).should be_valid
end
it "fails if there is `while true`" do
source = Source.new invalid_source
subject.catch(source).should_not be_valid
end
it "reports rule, pos and message" do
source = Source.new invalid_source, "source.cr"
subject.catch(source).should_not be_valid
error = source.errors.first
error.location.to_s.should eq "source.cr:2:1"
error.message.should eq "While statement using true literal as condition"
end
end
end