1 files changed, 131 insertions, 0 deletions
diff --git a/spec/rubocop/cop/style/regexp_literal_mixed_preserve_spec.rb b/spec/rubocop/cop/style/regexp_literal_mixed_preserve_spec.rb
new file mode 100644
index 00000000000..384a834a512
--- /dev/null
+++ b/spec/rubocop/cop/style/regexp_literal_mixed_preserve_spec.rb
@@ -0,0 +1,131 @@
+# frozen_string_literal: true
+
+require 'fast_spec_helper'
+
+require_relative '../../../../rubocop/cop/style/regexp_literal_mixed_preserve'
+
+# This spec contains only relevant examples.
+#
+# See also https://github.com/rubocop/rubocop/pull/9688
+RSpec.describe RuboCop::Cop::Style::RegexpLiteralMixedPreserve, :config do
+  let(:config) do
+    supported_styles = { 'SupportedStyles' => %w[slashes percent_r mixed mixed_preserve] }
+    RuboCop::Config.new('Style/PercentLiteralDelimiters' =>
+                          percent_literal_delimiters_config,
+                        'Style/RegexpLiteralMixedPreserve' =>
+                          cop_config.merge(supported_styles))
+  end
+
+  let(:percent_literal_delimiters_config) { { 'PreferredDelimiters' => { '%r' => '{}' } } }
+
+  context 'when EnforcedStyle is set to mixed_preserve' do
+    let(:cop_config) { { 'EnforcedStyle' => 'mixed_preserve' } }
+
+    describe 'a single-line `//` regex without slashes' do
+      it 'is accepted' do
+        expect_no_offenses('foo = /a/')
+      end
+    end
+
+    describe 'a single-line `//` regex with slashes' do
+      it 'registers an offense and corrects' do
+        expect_offense(<<~'RUBY')
+          foo = /home\//
+                ^^^^^^^^ Use `%r` around regular expression.
+        RUBY
+
+        expect_correction(<<~'RUBY')
+          foo = %r{home/}
+        RUBY
+      end
+
+      describe 'when configured to allow inner slashes' do
+        before do
+          cop_config['AllowInnerSlashes'] = true
+        end
+
+        it 'is accepted' do
+          expect_no_offenses('foo = /home\\//')
+        end
+      end
+    end
+
+    describe 'a multi-line `//` regex without slashes' do
+      it 'is accepted' do
+        expect_no_offenses(<<~'RUBY')
+          foo = /
+            foo
+            bar
+          /x
+        RUBY
+      end
+    end
+
+    describe 'a multi-line `//` regex with slashes' do
+      it 'registers an offense and corrects' do
+        expect_offense(<<~'RUBY')
+          foo = /
+                ^ Use `%r` around regular expression.
+            https?:\/\/
+            example\.com
+          /x
+        RUBY
+
+        expect_correction(<<~'RUBY')
+          foo = %r{
+            https?://
+            example\.com
+          }x
+        RUBY
+      end
+    end
+
+    describe 'a single-line %r regex without slashes' do
+      it 'is accepted' do
+        expect_no_offenses(<<~RUBY)
+          foo = %r{a}
+        RUBY
+      end
+    end
+
+    describe 'a single-line %r regex with slashes' do
+      it 'is accepted' do
+        expect_no_offenses('foo = %r{home/}')
+      end
+
+      describe 'when configured to allow inner slashes' do
+        before do
+          cop_config['AllowInnerSlashes'] = true
+        end
+
+        it 'is accepted' do
+          expect_no_offenses(<<~RUBY)
+            foo = %r{home/}
+          RUBY
+        end
+      end
+    end
+
+    describe 'a multi-line %r regex without slashes' do
+      it 'is accepted' do
+        expect_no_offenses(<<~RUBY)
+          foo = %r{
+            foo
+            bar
+          }x
+        RUBY
+      end
+    end
+
+    describe 'a multi-line %r regex with slashes' do
+      it 'is accepted' do
+        expect_no_offenses(<<~RUBY)
+          foo = %r{
+            https?://
+            example\.com
+          }x
+        RUBY
+      end
+    end
+  end
+end