test/fiber/test_backtrace.rb: prevent a warning

``` /home/chkbuild/chkbuild/tmp/build/20200818T033004Z/ruby/test/fiber/test_backtrace.rb:9: warning: ambiguous first argument; put parentheses or a space even after `/' operator /home/chkbuild/chkbuild/tmp/build/20200818T033004Z/ruby/test/fiber/test_backtrace.rb:15: warning: ambiguous first argument; put parentheses or a space even after `/' operator ```
ruby · Aug 18, 2020 · 7012175 · 7012175
1 parent bc00e6a
commit 7012175
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/test/fiber/test_backtrace.rb b/test/fiber/test_backtrace.rb
@@ -6,13 +6,13 @@ class TestFiberBacktrace < Test::Unit::TestCase
   def test_backtrace
     backtrace = Fiber.current.backtrace
     assert_kind_of Array, backtrace
-    assert_match /test_backtrace/, backtrace[0]
+    assert_match(/test_backtrace/, backtrace[0])
   end
 
   def test_backtrace_locations
     backtrace = Fiber.current.backtrace_locations
     assert_kind_of Array, backtrace
-    assert_match /test_backtrace_locations/, backtrace[1].label
+    assert_match(/test_backtrace_locations/, backtrace[1].label)
   end
 
   def test_local_backtrace