[rspec-users] How do I use expect{}.to change().from().to() on Array?

[niku -E:)]

Hi.

I'm using ruby1.9.2 and rspec2.5.1
I want to use "expect{}.to change().from().to()" like this

https://gist.github.com/870897

When Int class, it passed.
When Ary class, it failed.

Why was Ary test failed and How do I pass this test?

regards.
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