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-rw-r--r--spec/ruby/core/thread/backtrace_spec.rb8
1 files changed, 8 insertions, 0 deletions
diff --git a/spec/ruby/core/thread/backtrace_spec.rb b/spec/ruby/core/thread/backtrace_spec.rb
index a20fdee956..532d7a8f4e 100644
--- a/spec/ruby/core/thread/backtrace_spec.rb
+++ b/spec/ruby/core/thread/backtrace_spec.rb
@@ -24,4 +24,12 @@ describe "Thread#backtrace" do
t.join
t.backtrace.should == nil
end
+
+ it "returns an array (which may be empty) immediately after the thread is created" do
+ t = Thread.new { sleep }
+ backtrace = t.backtrace
+ t.kill
+ t.join
+ backtrace.should be_kind_of(Array)
+ end
end