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-rw-r--r--test/ruby/test_syntax.rb21
1 files changed, 21 insertions, 0 deletions
diff --git a/test/ruby/test_syntax.rb b/test/ruby/test_syntax.rb
index bc29007359d..823b64692cd 100644
--- a/test/ruby/test_syntax.rb
+++ b/test/ruby/test_syntax.rb
@@ -111,6 +111,27 @@ class TestSyntax < Test::Unit::TestCase
end
end
+ def test_warn_balanced
+ warning = <<WARN
+test:1: warning: `%s' after local variable or literal is interpreted as binary operator
+test:1: warning: even though it seems like %s
+WARN
+ [
+ [:**, "argument prefix"],
+ [:*, "argument prefix"],
+ [:<<, "here document"],
+ [:&, "argument prefix"],
+ [:+, "unary operator"],
+ [:-, "unary operator"],
+ [:/, "regexp literal"],
+ [:%, "string literal"],
+ ].each do |op, syn|
+ assert_warning(warning % [op, syn]) do
+ assert_valid_syntax("puts 1 #{op}0", "test") {$VERBOSE = true}
+ end
+ end
+ end
+
def test_cmd_symbol_after_keyword
bug6347 = '[ruby-dev:45563]'
assert_not_label(:foo, 'if true then not_label:foo end', bug6347)