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9e2d4f1856
closes #220
66 lines
1.8 KiB
Crystal
66 lines
1.8 KiB
Crystal
require "../../../spec_helper"
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module Ameba::Rule::Performance
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subject = MapInsteadOfBlock.new
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describe MapInsteadOfBlock do
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it "passes if there is no potential performance improvements" do
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source = Source.new %(
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(1..3).sum(&.*(2))
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(1..3).product(&.*(2))
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)
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subject.catch(source).should be_valid
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end
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it "reports if there is map followed by sum without a block" do
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source = Source.new %(
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(1..3).map(&.to_u64).sum
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)
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subject.catch(source).should_not be_valid
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end
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it "does not report if source is a spec" do
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source = Source.new %(
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(1..3).map(&.to_s).join
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), "source_spec.cr"
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subject.catch(source).should be_valid
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end
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it "reports if there is map followed by sum without a block (with argument)" do
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source = Source.new %(
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(1..3).map(&.to_u64).sum(0)
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)
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subject.catch(source).should_not be_valid
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end
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it "reports if there is map followed by sum with a block" do
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source = Source.new %(
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(1..3).map(&.to_u64).sum(&.itself)
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)
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subject.catch(source).should_not be_valid
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end
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context "macro" do
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it "doesn't report in macro scope" do
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source = Source.new %(
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{{ [1, 2, 3].map(&.to_u64).sum }}
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)
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subject.catch(source).should be_valid
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end
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end
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it "reports rule, pos and message" do
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s = Source.new %(
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(1..3).map(&.to_u64).sum
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), "source.cr"
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subject.catch(s).should_not be_valid
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issue = s.issues.first
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issue.rule.should_not be_nil
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issue.location.to_s.should eq "source.cr:1:8"
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issue.end_location.to_s.should eq "source.cr:1:25"
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issue.message.should eq "Use `sum {...}` instead of `map {...}.sum`"
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end
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end
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end
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