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Feature: customized message
RSpec tries to provide useful failure messages, but for cases in which you
want more specific information, you can define your own message right in the
example. This works for any matcher _other than the operator matchers_.
Scenario: customize failure message
Given a file named "example_spec.rb" with:
"""ruby
describe Array do
context "when created with `new`" do
it "is empty" do
array = Array.new
array << 1 # trigger a failure to demonstrate the message
array.should be_empty, "expected empty array, got #{array.inspect}"
end
end
end
"""
When I run `rspec example_spec.rb --format documentation`
Then the output should contain "expected empty array, got [1]"
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