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41 lines
1.1 KiB
Crystal
41 lines
1.1 KiB
Crystal
require "../../../spec_helper"
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module Ameba::Rule::Performance
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subject = CompactAfterMap.new
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describe CompactAfterMap do
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it "passes if there is no potential performance improvements" do
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expect_no_issues subject, <<-CRYSTAL
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(1..3).compact_map(&.itself)
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CRYSTAL
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end
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it "passes if there is map followed by a bang call" do
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expect_no_issues subject, <<-CRYSTAL
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(1..3).map(&.itself).compact!
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CRYSTAL
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end
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it "reports if there is map followed by compact call" do
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expect_issue subject, <<-CRYSTAL
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(1..3).map(&.itself).compact
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# ^^^^^^^^^^^^^^^^^^^^^ error: Use `compact_map {...}` instead of `map {...}.compact`
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CRYSTAL
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end
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it "does not report if source is a spec" do
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expect_no_issues subject, path: "source_spec.cr", code: <<-CRYSTAL
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(1..3).map(&.itself).compact
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CRYSTAL
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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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expect_no_issues subject, <<-CRYSTAL
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{{ [1, 2, 3].map(&.to_s).compact }}
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CRYSTAL
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end
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end
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end
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end
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