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-rw-r--r--test/ruby/test_not.rb12
1 files changed, 12 insertions, 0 deletions
diff --git a/test/ruby/test_not.rb b/test/ruby/test_not.rb
new file mode 100644
index 0000000000..486075bf83
--- /dev/null
+++ b/test/ruby/test_not.rb
@@ -0,0 +1,12 @@
+require 'test/unit'
+
+class TestIfunless < Test::Unit::TestCase
+ def test_not_with_grouped_expression
+ assert_equal(false, (not (true)))
+ assert_equal(true, (not (false)))
+ end
+
+ def test_not_with_empty_grouped_expression
+ assert_equal(true, (not ()))
+ end
+end