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121 lines
3.2 KiB
Crystal
121 lines
3.2 KiB
Crystal
require "../../../spec_helper"
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module Ameba::Rule::Style
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subject = ParenthesesAroundCondition.new
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describe ParenthesesAroundCondition do
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{% for keyword in %w(if unless while until) %}
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context "{{ keyword.id }}" do
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it "reports if redundant parentheses are found" do
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source = expect_issue subject, <<-CRYSTAL, keyword: {{ keyword }}
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%{keyword} (foo > 10)
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_{keyword} # ^^^^^^^^^^ error: Redundant parentheses
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foo
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end
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CRYSTAL
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expect_correction source, <<-CRYSTAL
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{{ keyword.id }} foo > 10
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foo
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end
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CRYSTAL
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end
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end
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{% end %}
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context "case" do
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it "reports if redundant parentheses are found" do
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source = expect_issue subject, <<-CRYSTAL
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case (foo = @foo)
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# ^^^^^^^^^^^^ error: Redundant parentheses
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when String then "string"
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when Symbol then "symbol"
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end
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CRYSTAL
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expect_correction source, <<-CRYSTAL
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case foo = @foo
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when String then "string"
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when Symbol then "symbol"
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end
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CRYSTAL
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end
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end
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context "properties" do
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context "#exclude_ternary" do
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it "skips ternary control expressions by default" do
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expect_no_issues subject, <<-CRYSTAL
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(foo > bar) ? true : false
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CRYSTAL
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end
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it "allows to configure assignments" do
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rule = ParenthesesAroundCondition.new
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rule.exclude_ternary = false
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expect_issue rule, <<-CRYSTAL
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(foo.empty?) ? true : false
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# ^^^^^^^^^^ error: Redundant parentheses
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CRYSTAL
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expect_no_issues subject, <<-CRYSTAL
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(foo && bar) ? true : false
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(foo || bar) ? true : false
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(foo = @foo) ? true : false
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foo == 42 ? true : false
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(foo = 42) ? true : false
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(foo > 42) ? true : false
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(foo >= 42) ? true : false
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(3 >= foo >= 42) ? true : false
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(3.in? 0..42) ? true : false
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(yield 42) ? true : false
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(foo rescue 42) ? true : false
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CRYSTAL
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end
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end
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context "#allow_safe_assignment" do
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it "reports assignments by default" do
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expect_issue subject, <<-CRYSTAL
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if (foo = @foo)
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# ^^^^^^^^^^^^ error: Redundant parentheses
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foo
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end
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CRYSTAL
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expect_no_issues subject, <<-CRYSTAL
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if !(foo = @foo)
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foo
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end
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CRYSTAL
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expect_no_issues subject, <<-CRYSTAL
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if foo = @foo
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foo
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end
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CRYSTAL
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end
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it "allows to configure assignments" do
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rule = ParenthesesAroundCondition.new
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rule.allow_safe_assignment = true
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expect_issue rule, <<-CRYSTAL
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if foo = @foo
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# ^^^^^^^^^^ error: Missing parentheses
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foo
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end
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CRYSTAL
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expect_no_issues rule, <<-CRYSTAL
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if (foo = @foo)
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foo
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end
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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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end
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