Add support for scanning on keys containing hash tags

lib/mock_redis/database.rb

@@ -336,7 +336,7 @@ def looks_like_float?(str)
     def redis_pattern_to_ruby_regex(pattern)
       Regexp.new(
         "^#{pattern}$".
-        gsub(/([+|()])/, '\\\\\1').
+        gsub(/([+|(){}])/, '\\\\\1').
         gsub(/(?<!\\)\?/, '\\1.').
         gsub(/([^\\])\*/, '\\1.*')
       )

spec/commands/scan_each_spec.rb

@@ -36,6 +36,17 @@
       end
     end
 
+    context 'when giving a custom match filter with a hash tag' do
+      let(:match) { 'mock:key:{1}:*' }
+      let(:data) { ['mock:key:{1}:1', 'mock:key:{1}:2', 'mock:key:{2}:1'].to_h { |e| [e, nil] } }
+      let(:expected) { %w[mock:key:{1}:1 mock:key:{1}:2] }
+
+      it 'returns a 0 cursor and the filtered collection' do
+        expect(subject.scan_each(match: match)).to match_array(expected)
+      end
+    end
+
+
     context 'when giving a custom match and type filter' do
       let(:data) do
         { 'mock:stringkey' => 'mockvalue',

spec/commands/scan_spec.rb

@@ -61,6 +61,16 @@
       end
     end
 
+    context 'when giving a custom match filter with a hash tag' do
+      let(:match) { 'mock:key:{1}:*' }
+      let(:data) { ['mock:key:{1}:1', 'mock:key:{1}:2', 'mock:key:{2}:1'].to_h { |e| [e, nil] } }
+      let(:expected) { ['0', %w[mock:key:{1}:1 mock:key:{1}:2]] }
+
+      it 'returns a 0 cursor and the filtered collection' do
+        expect(subject.scan(0, count: count, match: match)).to eq(expected)
+      end
+    end
+
     context 'when giving a custom match and type filter' do
       let(:data) do
         { 'mock:stringkey' => 'mockvalue',