test/psych/test_scalar_scanner.rb: Prevent a warning

``` [ 4696/20990] TestAst#test_ranges:test/psych/test_scalar_scanner.rb(none):138: warning: ambiguous first argument; put parentheses or a space even after `-' operator ``` http://rubyci.s3.amazonaws.com/ubuntu/ruby-master/log/20210909T123007Z.log.html.gz
ruby · Sep 9, 2021 · 141db4f · 141db4f
1 parent 34839e4
commit 141db4f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/test/psych/test_scalar_scanner.rb b/test/psych/test_scalar_scanner.rb
@@ -135,7 +135,7 @@ def test_scan_int_commas_and_underscores
 
       assert_equal 1, ss.tokenize('1')
       assert_equal 1, ss.tokenize('+1')
-      assert_equal -1, ss.tokenize('-1')
+      assert_equal(-1, ss.tokenize('-1'))
 
       assert_equal 0b010101010, ss.tokenize('0b010101010')
       assert_equal 0b010101010, ss.tokenize('0b0,1_0,1_,0,1_01,0')