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107 lines
4.2 KiB
Ruby
107 lines
4.2 KiB
Ruby
# frozen_string_literal: true
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require "rubocops/blank"
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RSpec.describe RuboCop::Cop::Homebrew::Blank, :config do
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shared_examples "offense" do |source, correction, message|
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it "registers an offense and corrects" do
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expect_offense(<<~RUBY, source:, message:)
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#{source}
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^{source} #{message}
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RUBY
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expect_correction(<<~RUBY)
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#{correction}
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RUBY
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end
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end
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it "accepts checking nil?" do
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expect_no_offenses("foo.nil?")
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end
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it "accepts checking empty?" do
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expect_no_offenses("foo.empty?")
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end
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it "accepts checking nil? || empty? on different objects" do
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expect_no_offenses("foo.nil? || bar.empty?")
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end
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# Bug: https://github.com/rubocop/rubocop/issues/4171
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it "does not break when RHS of `or` is a naked falsiness check" do
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expect_no_offenses("foo.empty? || bar")
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end
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it "does not break when LHS of `or` is a naked falsiness check" do
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expect_no_offenses("bar || foo.empty?")
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end
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# Bug: https://github.com/rubocop/rubocop/issues/4814
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it "does not break when LHS of `or` is a send node with an argument" do
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expect_no_offenses("x(1) || something")
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end
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context "when nil or empty" do
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it_behaves_like "offense", "foo.nil? || foo.empty?",
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"foo.blank?",
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"Use `foo.blank?` instead of `foo.nil? || foo.empty?`."
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it_behaves_like "offense", "nil? || empty?", "blank?", "Use `blank?` instead of `nil? || empty?`."
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it_behaves_like "offense", "foo == nil || foo.empty?",
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"foo.blank?",
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"Use `foo.blank?` instead of `foo == nil || foo.empty?`."
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it_behaves_like "offense", "nil == foo || foo.empty?",
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"foo.blank?",
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"Use `foo.blank?` instead of `nil == foo || foo.empty?`."
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it_behaves_like "offense", "!foo || foo.empty?", "foo.blank?",
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"Use `foo.blank?` instead of `!foo || foo.empty?`."
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it_behaves_like "offense", "foo.nil? || !!foo.empty?",
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"foo.blank?",
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"Use `foo.blank?` instead of `foo.nil? || !!foo.empty?`."
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it_behaves_like "offense", "foo == nil || !!foo.empty?",
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"foo.blank?",
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"Use `foo.blank?` instead of " \
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"`foo == nil || !!foo.empty?`."
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it_behaves_like "offense", "nil == foo || !!foo.empty?",
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"foo.blank?",
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"Use `foo.blank?` instead of " \
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"`nil == foo || !!foo.empty?`."
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end
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context "when checking all variable types" do
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it_behaves_like "offense", "foo.bar.nil? || foo.bar.empty?",
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"foo.bar.blank?",
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"Use `foo.bar.blank?` instead of " \
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"`foo.bar.nil? || foo.bar.empty?`."
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it_behaves_like "offense", "FOO.nil? || FOO.empty?",
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"FOO.blank?",
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"Use `FOO.blank?` instead of `FOO.nil? || FOO.empty?`."
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it_behaves_like "offense", "Foo.nil? || Foo.empty?",
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"Foo.blank?",
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"Use `Foo.blank?` instead of `Foo.nil? || Foo.empty?`."
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it_behaves_like "offense", "Foo::Bar.nil? || Foo::Bar.empty?",
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"Foo::Bar.blank?",
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"Use `Foo::Bar.blank?` instead of " \
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"`Foo::Bar.nil? || Foo::Bar.empty?`."
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it_behaves_like "offense", "@foo.nil? || @foo.empty?",
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"@foo.blank?",
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"Use `@foo.blank?` instead of `@foo.nil? || @foo.empty?`."
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it_behaves_like "offense", "$foo.nil? || $foo.empty?",
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"$foo.blank?",
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"Use `$foo.blank?` instead of `$foo.nil? || $foo.empty?`."
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it_behaves_like "offense", "@@foo.nil? || @@foo.empty?",
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"@@foo.blank?",
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"Use `@@foo.blank?` instead of " \
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"`@@foo.nil? || @@foo.empty?`."
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it_behaves_like "offense", "foo[bar].nil? || foo[bar].empty?",
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"foo[bar].blank?",
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"Use `foo[bar].blank?` instead of " \
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"`foo[bar].nil? || foo[bar].empty?`."
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it_behaves_like "offense", "foo(bar).nil? || foo(bar).empty?",
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"foo(bar).blank?",
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"Use `foo(bar).blank?` instead of " \
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"`foo(bar).nil? || foo(bar).empty?`."
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end
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end
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