shard-ameba/spec/ameba/rule/metrics/cyclomatic_complexity_spec.cr

49 lines
1.1 KiB
Crystal

require "../../../spec_helper"
module Ameba::Rule::Metrics
subject = CyclomaticComplexity.new
complex_method = <<-CRYSTAL
def hello(a, b, c)
if a && b && c
begin
while true
return if false && b
end
""
rescue
""
end
end
end
CRYSTAL
describe CyclomaticComplexity do
it "passes for empty methods" do
expect_no_issues subject, <<-CRYSTAL
def hello
end
CRYSTAL
end
it "reports one issue for a complex method" do
rule = CyclomaticComplexity.new
rule.max_complexity = 5
source = Source.new(complex_method, "source.cr")
rule.catch(source).should_not be_valid
issue = source.issues.first
issue.rule.should eq rule
issue.location.to_s.should eq "source.cr:1:5"
issue.end_location.to_s.should eq "source.cr:1:9"
issue.message.should eq "Cyclomatic complexity too high [8/5]"
end
it "doesn't report an issue for an increased threshold" do
rule = CyclomaticComplexity.new
rule.max_complexity = 100
expect_no_issues rule, complex_method
end
end
end