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Fix false negative for RSpec/PredicateMatcher when expectation contains custom failure message
This leaves `predicate_matcher_block?` since RSpec doesn't seem to handle that case
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‎CHANGELOG.md

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@@ -3,6 +3,7 @@
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## Master (Unreleased)
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- Fix wrong autocorrect for `RSpec/ScatteredSetup` when hook contains heredoc. ([@earlopain])
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- Fix false negative for `RSpec/PredicateMatcher` when expectation contains custom failure message. ([@earlopain])
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## 3.0.1 (2024-06-11)
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‎lib/rubocop/cop/rspec/predicate_matcher.rb

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@@ -32,7 +32,7 @@ def check_inflected(node)
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(block $(send !nil? #predicate? ...) ...)
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$(send !nil? #predicate? ...)})
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$#Runners.all
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$#boolean_matcher?)
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$#boolean_matcher? ...)
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PATTERN
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# @!method be_bool?(node)
@@ -183,8 +183,12 @@ def heredoc_argument?(matcher)
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(send
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(send nil? :expect $!nil?)
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#Runners.all
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{$(send nil? #predicate_matcher_name? ...)
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(block $(send nil? #predicate_matcher_name? ...) ...)})
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{
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$(send nil? #predicate_matcher_name? ...)
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(block $(send nil? #predicate_matcher_name? ...) ...)
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}
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...
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)
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PATTERN
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# @!method predicate_matcher_block?(node)

‎spec/rubocop/cop/rspec/predicate_matcher_spec.rb

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Original file line numberDiff line numberDiff line change
@@ -16,6 +16,8 @@
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expect_offense(<<~RUBY)
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expect(foo.empty?).to be_truthy
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `be_empty` matcher over `empty?`.
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expect(foo.empty?).to be_truthy, 'fail'
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `be_empty` matcher over `empty?`.
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expect(foo.empty?).not_to be_truthy
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `be_empty` matcher over `empty?`.
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expect(foo.empty?).to_not be_truthy
@@ -30,6 +32,7 @@
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expect_correction(<<~RUBY)
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expect(foo).to be_empty
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expect(foo).to be_empty, 'fail'
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expect(foo).not_to be_empty
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expect(foo).not_to be_empty
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expect(foo).not_to be_empty
@@ -42,6 +45,8 @@
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expect_offense(<<~RUBY)
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expect(foo.exist?).to be_truthy
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `exist` matcher over `exist?`.
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expect(foo.exist?).to be_truthy, 'fail'
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `exist` matcher over `exist?`.
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expect(foo.exists?).to be_truthy
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `exist` matcher over `exists?`.
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expect(foo.has_something?).to be_truthy
@@ -58,6 +63,7 @@
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expect_correction(<<~RUBY)
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expect(foo).to exist
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expect(foo).to exist, 'fail'
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expect(foo).to exist
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expect(foo).to have_something
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expect(foo).not_to have_something
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expect_offense(<<~RUBY)
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expect(foo.something?('foo')).to be_truthy
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `be_something` matcher over `something?`.
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expect(foo.something?('foo')).to be_truthy, 'fail'
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `be_something` matcher over `something?`.
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expect(foo.something?('foo', 'bar')).to be_truthy
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `be_something` matcher over `something?`.
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expect(foo.something? 1, 2).to be_truthy
@@ -85,6 +93,7 @@
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expect_correction(<<~RUBY)
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expect(foo).to be_something('foo')
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expect(foo).to be_something('foo'), 'fail'
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expect(foo).to be_something('foo', 'bar')
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expect(foo).to be_something 1, 2
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expect(foo).to have_key('foo')
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expect_offense(<<~RUBY)
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expect(foo.all?(&:present?)).to be_truthy
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `be_all` matcher over `all?`.
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expect(foo.all?(&:present?)).to be_truthy, 'fail'
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `be_all` matcher over `all?`.
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expect(foo.all? { |x| x.present? }).to be_truthy
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `be_all` matcher over `all?`.
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expect(foo.all?(n) { |x| x.present? }).to be_truthy
@@ -134,6 +145,7 @@
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expect_correction(<<~RUBY)
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expect(foo).to be_all(&:present?)
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expect(foo).to be_all(&:present?), 'fail'
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expect(foo).to be_all { |x| x.present? }
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expect(foo).to be_all(n) { |x| x.present? }
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expect(foo).to be_all { present }
@@ -151,13 +163,15 @@
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it 'accepts a predicate method that is not checked true/false' do
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expect_no_offenses(<<~RUBY)
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expect(foo.something?).to eq "something"
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expect(foo.something?).to eq "something", "fail"
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expect(foo.has_something?).to eq "something"
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RUBY
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end
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it 'accepts non-predicate method' do
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expect_no_offenses(<<~RUBY)
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expect(foo.something).to be(true)
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expect(foo.something).to be(true), 'fail'
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expect(foo.has_something).to be(true)
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RUBY
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end
@@ -171,6 +185,7 @@
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it 'accepts strict checking boolean matcher' do
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expect_no_offenses(<<~RUBY)
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expect(foo.empty?).to eq(true)
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expect(foo.empty?).to eq(true), 'fail'
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expect(foo.empty?).to be(true)
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expect(foo.empty?).to be(false)
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expect(foo.empty?).not_to be true
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expect_offense(<<~RUBY)
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expect(foo.empty?).to eq(true)
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `be_empty` matcher over `empty?`.
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expect(foo.empty?).to eq(true), 'fail'
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `be_empty` matcher over `empty?`.
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expect(foo.empty?).not_to be(true)
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `be_empty` matcher over `empty?`.
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expect(foo.empty?).to be(true)
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expect_correction(<<~RUBY)
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expect(foo).to be_empty
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expect(foo).to be_empty, 'fail'
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expect(foo).not_to be_empty
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expect(foo).to be_empty
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expect(foo).not_to be_empty
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expect_offense(<<~RUBY)
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expect(foo).to be_empty
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^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `empty?` over `be_empty` matcher.
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expect(foo).to be_empty, 'fail'
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `empty?` over `be_empty` matcher.
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expect(foo).not_to be_empty
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^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `empty?` over `be_empty` matcher.
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expect(foo).to have_something
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it 'accepts built in matchers' do
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expect_no_offenses(<<~RUBY)
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expect(foo).to be_truthy
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expect(foo).to be_truthy, 'fail'
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expect(foo).to be_falsey
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expect(foo).to be_falsy
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expect(foo).to have_attributes(name: 'foo')
@@ -275,13 +296,16 @@
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it 'accepts non-predicate matcher' do
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expect_no_offenses(<<~RUBY)
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expect(foo).to be(true)
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expect(foo).to be(true), 'fail'
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RUBY
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end
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it 'registers an offense for a predicate method with built-in equiv' do
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expect_offense(<<~RUBY)
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expect(foo).to be_something
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^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `something?` over `be_something` matcher.
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expect(foo).to be_something, 'fail'
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `something?` over `be_something` matcher.
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expect(foo).not_to be_something
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `something?` over `be_something` matcher.
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expect(foo).to have_something
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expect_correction(<<~RUBY)
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expect(foo.something?).to #{matcher_true}
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expect(foo.something?).to #{matcher_true}, 'fail'
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expect(foo.something?).to #{matcher_false}
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expect(foo.has_something?).to #{matcher_true}
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expect(foo.is_a?(Array)).to #{matcher_true}
@@ -403,6 +428,7 @@
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'with no argument' do
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expect_no_offenses(<<~RUBY)
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expect(foo).to include
431+
expect(foo).to include, 'fail'
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RUBY
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end
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