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119 lines
2.6 KiB
Crystal
119 lines
2.6 KiB
Crystal
require "../../spec_helper"
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module Ameba::Rule
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describe DuplicatedWhen do
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subject = DuplicatedWhen.new
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it "passes if there are no duplicated when conditions in the case" do
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s = Source.new %(
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case x
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when "first"
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do_something
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when "second"
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do_something_else
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end
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case x
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when Integer then :one
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when Int32, String then :two
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end
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case {value1, value2}
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when {0, _}
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when {_, 0}
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end
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case x
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when .odd?
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when .even?
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end
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case
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when Integer then :one
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when Integer | String then :two
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end
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case x
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when :one
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when "one"
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end
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case {value1, value2}
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when {String, String}
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end
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)
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subject.catch(s).should be_valid
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end
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it "fails if there is a duplicated when condition in the case" do
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s = Source.new %(
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case x
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when .starts_with?("pattern1")
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do_something1
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when .starts_with?("pattern2")
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do_something2
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when .starts_with?("pattern1")
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do_something3
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end
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)
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subject.catch(s).should_not be_valid
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end
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it "fails if there are multiple when conditions with nil" do
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s = Source.new %(
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case x
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when nil
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say_hello
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when nil
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say_nothing
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end
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)
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subject.catch(s).should_not be_valid
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end
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it "fails if there are multiple whens with is_a? conditions" do
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s = Source.new %(
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case x
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when String then say_hello
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when Integer then say_nothing
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when String then blah
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end
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)
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subject.catch(s).should_not be_valid
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end
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it "fails if there are duplicated whens but in difference order" do
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s = Source.new %(
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case x
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when String, Integer then something
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when Integer then blah
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end
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)
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subject.catch(s).should_not be_valid
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end
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it "fails if there are duplicated conditions in one when" do
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s = Source.new %(
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case x
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when String, String then something
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end
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)
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subject.catch(s).should_not be_valid
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end
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it "reports rule, location and message" do
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s = Source.new %q(
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case x
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when "first"
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when "first"
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end
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), "source.cr"
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subject.catch(s).should_not be_valid
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error = s.errors.first
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error.rule.should_not be_nil
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error.location.to_s.should eq "source.cr:2:9"
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error.message.should eq "Duplicated when conditions in case"
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end
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end
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end
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