1 files changed, 37 insertions, 0 deletions
diff --git a/spec/ruby/core/exception/to_s_spec.rb b/spec/ruby/core/exception/to_s_spec.rb
new file mode 100644
index 0000000000..65c0d73a98
--- /dev/null
+++ b/spec/ruby/core/exception/to_s_spec.rb
@@ -0,0 +1,37 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/common'
+
+describe "Exception#to_s" do
+  it "returns the self's name if no message is set" do
+    Exception.new.to_s.should == 'Exception'
+    ExceptionSpecs::Exceptional.new.to_s.should == 'ExceptionSpecs::Exceptional'
+  end
+
+  it "returns self's message if set" do
+    ExceptionSpecs::Exceptional.new('!!').to_s.should == '!!'
+  end
+
+  it "calls #to_s on the message" do
+    message = mock("message")
+    message.should_receive(:to_s).and_return("message")
+    ExceptionSpecs::Exceptional.new(message).to_s.should == "message"
+  end
+end
+
+describe "NameError#to_s" do
+  it "raises its own message for an undefined variable" do
+    begin
+      puts not_defined
+    rescue => exception
+      exception.message.should =~ /undefined local variable or method [`']not_defined'/
+    end
+  end
+
+  it "raises its own message for an undefined constant" do
+    begin
+      puts NotDefined
+    rescue => exception
+      exception.message.should =~ /uninitialized constant NotDefined/
+    end
+  end
+end