style: fix rubocop offenses

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: charlespwd

lib/liquid/expression.rb

@@ -48,7 +48,7 @@ def parse(markup, ss = StringScanner.new(""), cache = nil)
       end
 
       def inner_parse(markup, ss, cache)
-        if (markup.start_with?("(") && markup.end_with?(")")) && markup =~ RANGES_REGEX
+        if markup.start_with?("(") && markup.end_with?(")") && markup =~ RANGES_REGEX
           start_markup = Regexp.last_match(1)
           end_markup = Regexp.last_match(2)
           start_obj = parse(start_markup, ss, cache)

test/unit/parser_unit_test.rb

@@ -74,7 +74,7 @@ def test_expression
     assert_equal('wut', p.expression)
     assert_equal(true, p.expression)
     assert_equal(false, p.expression)
-    assert_equal((0..5), p.expression)
+    assert_equal(0..5, p.expression)
   end
 
   def test_number
@@ -104,11 +104,11 @@ def test_unnamed_variable_lookup
 
   def test_range_lookup
     p = new_parser('(0..5) (a..b)')
-    assert_equal((0..5), p.expression)
+    assert_equal(0..5, p.expression)
 
     r2 = p.expression
     assert(r2.is_a?(RangeLookup))
-    assert_equal((1..4), r2.evaluate(Context.new({ 'a' => 1, 'b' => 4 })))
+    assert_equal(1..4, r2.evaluate(Context.new({ 'a' => 1, 'b' => 4 })))
   end
 
   def test_ranges