shard-ameba/spec/ameba/rule/hash_duplicated_key_spec.cr

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2017-11-17 22:43:19 +00:00
require "../../spec_helper"
module Ameba::Rule
describe HashDuplicatedKey do
subject = HashDuplicatedKey.new
it "passes if there is no duplicated keys in a hash literals" do
s = Source.new %(
h = {"a" => 1, :a => 2, "b" => 3}
h = {"a" => 1, "b" => 2, "c" => {"a" => 3, "b" => 4}}
h = {} of String => String
)
subject.catch(s).should be_valid
end
it "fails if there is a duplicated key in a hash literal" do
s = Source.new %q(
h = {"a" => 1, "b" => 2, "a" => 3}
)
subject.catch(s).should_not be_valid
end
it "fails if there is a duplicated key in the inner hash literal" do
s = Source.new %q(
h = {"a" => 1, "b" => {"a" => 3, "b" => 4, "a" => 5}}
)
subject.catch(s).should_not be_valid
end
it "reports rule, location and message" do
s = Source.new %q(
h = {"a" => 1, "a" => 2}
), "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:2:13"
error.message.should eq "Duplicated keys in hash literal."
end
end
end