raise error on unknown column; add complex query test

spec/query_generator_spec.rb

@@ -17,7 +17,7 @@ class SqlGeneratorTester
     it 'tests simple search term with unknown column name and without quotes' do
       @query = TextToSqlQuery.new('unknown:ab', [:'players.title', :'players.tag', :'players.device_id'], :'players.device_id')
 
-      expect(@query.where_clause).to eq ['players.device_id ILIKE ?', '%ab%']
+      expect { @query.where_clause }.to raise_error(RuntimeError, "Unknown field 'unknown'")
     end
 
     it 'tests simple search term without column name and with quotes' do
@@ -97,5 +97,30 @@ class SqlGeneratorTester
 
       expect(@query.where_clause).to eq ['tags.name ILIKE ?', '%h1-r%']
     end
+
+    it 'tests complex query' do
+      text = '(device_id:"with space" tags:mta no-quotes-id-123)'\
+      'or "id with quotes-5"  and   ( ("id with q 10" or "id with q 20")'\
+      'and ("id with Q 30" "id with Q 40") and not id-without-Q-50)'
+
+      fields = [:'players.title', :'players.name', :'players.device_id']
+      default_field = :'players.device_id'
+      fields_mappings = { tags: 'tags.name' }
+
+      @query = TextToSqlQuery.new(text, fields, default_field, fields_mappings)
+
+      result_expression = '((players.device_id ILIKE ? OR (tags.name ILIKE ? OR players.device_id ILIKE ?)) OR (players.device_id ILIKE ? AND (((players.device_id ILIKE ? OR players.device_id ILIKE ?) AND (players.device_id ILIKE ? OR players.device_id ILIKE ?)) AND NOT players.device_id ILIKE ?)))'
+      result_params = ['%with space%',
+                       '%mta%',
+                       '%no-quotes-id-123%',
+                       '%id with quotes-5%',
+                       '%id with q 10%',
+                       '%id with q 20%',
+                       '%id with Q 30%',
+                       '%id with Q 40%',
+                       '%id-without-Q-50%']
+
+      expect(@query.where_clause).to eq [result_expression, result_params].flatten
+    end
   end
 end

text_to_sql_query.rb

@@ -48,7 +48,9 @@ class TextToSqlQuery
       escaped_node_value = handle_special_chars node_value
       mapping = @fields_mappings[first_key.to_sym]
       if mapping.nil?
-        ["#{@default_field.to_s} ILIKE ?", "%#{escaped_node_value}%"]
+        # ["#{@default_field.to_s} ILIKE ?", "%#{escaped_node_value}%"]
+        #['', '']
+        raise "Unknown field '#{first_key.to_s}'" # "Unknown field '#{first_key.to_s}' in query "
       else
         ["#{mapping.to_s} ILIKE ?", "%#{escaped_node_value}%"]
       end