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implicit_subject_spec.rb
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implicit_subject_spec.rb
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# frozen_string_literal: true
RSpec.describe RuboCop::Cop::RSpec::ImplicitSubject, :config do
let(:cop_config) do
{ 'EnforcedStyle' => enforced_style }
end
context 'with EnforcedStyle `single_line_only`' do
let(:enforced_style) { 'single_line_only' }
it 'flags `is_expected` in multi-line examples' do
expect_offense(<<-RUBY)
it 'expect subject to be used' do
is_expected.to be_good
^^^^^^^^^^^ Don't use implicit subject.
end
RUBY
expect_correction(<<-RUBY)
it 'expect subject to be used' do
expect(subject).to be_good
end
RUBY
end
it 'allows `is_expected` inside `its` block, in multi-line examples' do
expect_no_offenses(<<-RUBY)
its(:quality) do
is_expected.to be :high
end
RUBY
end
it 'flags `should` in multi-line examples' do
expect_offense(<<-RUBY)
it 'expect subject to be used' do
should be_good
^^^^^^^^^^^^^^ Don't use implicit subject.
should_not be_bad
^^^^^^^^^^^^^^^^^ Don't use implicit subject.
end
RUBY
expect_correction(<<-RUBY)
it 'expect subject to be used' do
expect(subject).to be_good
expect(subject).not_to be_bad
end
RUBY
end
it 'allows `is_expected` in single-line examples' do
expect_no_offenses(<<-RUBY)
it { is_expected.to be_good }
RUBY
end
it 'allows `should` in single-line examples' do
expect_no_offenses(<<-RUBY)
it { should be_good }
RUBY
end
it 'does not flag methods called is_expected and should' do
expect_no_offenses(<<-RUBY)
it 'uses some similar sounding methods' do
expect(baz).to receive(:is_expected)
baz.is_expected
foo.should(deny_access)
end
RUBY
end
it 'detects usage of `is_expected` inside helper methods' do
expect_offense(<<-RUBY)
def permits(actions)
actions.each { |action| is_expected.to permit_action(action) }
^^^^^^^^^^^ Don't use implicit subject.
end
RUBY
expect_correction(<<-RUBY)
def permits(actions)
actions.each { |action| expect(subject).to permit_action(action) }
end
RUBY
end
end
context 'with EnforcedStyle `single_statement_only`' do
let(:enforced_style) { 'single_statement_only' }
it 'allows `is_expected` in multi-line example with single statement' do
expect_no_offenses(<<-RUBY)
it 'expect subject to be used' do
is_expected.to be_good
end
RUBY
end
it 'flags `is_expected` in multi-statement examples' do
expect_offense(<<-RUBY)
it 'expect subject to be used' do
subject.age = 18
is_expected.to be_valid
^^^^^^^^^^^ Don't use implicit subject.
end
RUBY
expect_correction(<<-RUBY)
it 'expect subject to be used' do
subject.age = 18
expect(subject).to be_valid
end
RUBY
end
end
context 'with EnforcedStyle `disallow`' do
let(:enforced_style) { 'disallow' }
it 'flags `is_expected` in multi-line examples' do
expect_offense(<<-RUBY)
it 'expect subject to be used' do
is_expected.to be_good
^^^^^^^^^^^ Don't use implicit subject.
end
RUBY
expect_correction(<<-RUBY)
it 'expect subject to be used' do
expect(subject).to be_good
end
RUBY
end
it 'flags `is_expected` in single-line examples' do
expect_offense(<<-RUBY)
it { is_expected.to be_good }
^^^^^^^^^^^ Don't use implicit subject.
RUBY
expect_correction(<<-RUBY)
it { expect(subject).to be_good }
RUBY
end
it 'flags `should` in multi-line examples' do
expect_offense(<<-RUBY)
it 'expect subject to be used' do
should be_good
^^^^^^^^^^^^^^ Don't use implicit subject.
should_not be_bad
^^^^^^^^^^^^^^^^^ Don't use implicit subject.
end
RUBY
expect_correction(<<-RUBY)
it 'expect subject to be used' do
expect(subject).to be_good
expect(subject).not_to be_bad
end
RUBY
end
it 'flags `should` in single-line examples' do
expect_offense(<<-RUBY)
it { should be_good }
^^^^^^^^^^^^^^ Don't use implicit subject.
it { should_not be_bad }
^^^^^^^^^^^^^^^^^ Don't use implicit subject.
RUBY
expect_correction(<<-RUBY)
it { expect(subject).to be_good }
it { expect(subject).not_to be_bad }
RUBY
end
it 'allows `is_expected` inside `its` block' do
expect_no_offenses(<<-RUBY)
its(:quality) { is_expected.to be :high }
RUBY
end
end
end