1 files changed, 23 insertions, 0 deletions
diff --git a/spec/rubyspec/core/signal/signame_spec.rb b/spec/rubyspec/core/signal/signame_spec.rb
new file mode 100644
index 0000000000..1874a67933
--- /dev/null
+++ b/spec/rubyspec/core/signal/signame_spec.rb
@@ -0,0 +1,23 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Signal.signame" do
+  it "takes a signal name with a well known signal number" do
+    Signal.signame(0).should == "EXIT"
+  end
+
+  ruby_version_is "2.0"..."2.3" do
+    it "raises an ArgumentError if the argument is an invalid signal number" do
+      lambda { Signal.signame(-1) }.should raise_error(ArgumentError)
+    end
+  end
+
+  ruby_version_is "2.3" do
+    it "returns nil if the argument is an invalid signal number" do
+      Signal.signame(-1).should == nil
+    end
+  end
+
+  it "raises a TypeError when the passed argument can't be coerced to Integer" do
+    lambda { Signal.signame("hello") }.should raise_error(TypeError)
+  end
+end