1 files changed, 39 insertions, 0 deletions
diff --git a/spec/ruby/core/thread/thread_variables_spec.rb b/spec/ruby/core/thread/thread_variables_spec.rb
new file mode 100644
index 0000000000..51ceef3376
--- /dev/null
+++ b/spec/ruby/core/thread/thread_variables_spec.rb
@@ -0,0 +1,39 @@
+require_relative '../../spec_helper'
+
+describe "Thread#thread_variables" do
+  before :each do
+    @t = Thread.new { }
+  end
+
+  after :each do
+    @t.join
+  end
+
+  it "returns the keys of all the values set" do
+    @t.thread_variable_set(:a, 2)
+    @t.thread_variable_set(:b, 4)
+    @t.thread_variable_set(:c, 6)
+    @t.thread_variables.sort.should == [:a, :b, :c]
+  end
+
+  it "returns the keys private to self" do
+    @t.thread_variable_set(:a, 82)
+    @t.thread_variable_set(:b, 82)
+    Thread.current.thread_variables.should_not include(:a, :b)
+  end
+
+  it "only contains user thread variables and is empty initially" do
+    Thread.current.thread_variables.should == []
+    @t.thread_variables.should == []
+  end
+
+  it "returns keys as Symbols" do
+    key = mock('key')
+    key.should_receive(:to_str).and_return('a')
+
+    @t.thread_variable_set(key, 49)
+    @t.thread_variable_set('b', 50)
+    @t.thread_variable_set(:c, 51)
+    @t.thread_variables.sort.should == [:a, :b, :c]
+  end
+end