test_backtrace.rb: add test

* test/ruby/test_backtrace.rb (test_caller_locations_lineno): test
  for Thread::Backtrace::Location#lineno.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49462 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 10 insertions, 0 deletions

diff --git a/test/ruby/test_backtrace.rb b/test/ruby/test_backtrace.rb
index 9116e0a32a..f52f80af59 100644
--- a/test/ruby/test_backtrace.rb
+++ b/test/ruby/test_backtrace.rb
@@ -185,6 +185,16 @@ class TestBacktrace < Test::Unit::TestCase
     end
   end
 
+  def test_caller_locations_lineno
+    loc, = caller_locations(0, 1)
+    assert_equal(__LINE__-1, loc.lineno)
+    Tempfile.create(%w"caller_locations .rb") do |f|
+      f.puts "caller_locations(0, 1)[0].tap {|loc| puts loc.lineno}"
+      f.close
+      assert_in_out_err(["-C", *File.split(f.path)], "", ["1"])
+    end
+  end
+
   def th_rec q, n=10
     if n > 1
       th_rec q, n-1