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Mater does Rspec: ` not_to`
RSpec::Matchers.define :not_to do
match { |actual| !actual }
RSpec.describe "Mater" do
specify "says `to not to' to mean false" do
expect(false).to not_to
expect(true).not_to not_to
# Mater
# says `to not to' to mean false
# Finished in 0.00073 seconds (files took 0.14261 seconds to load)
# 1 example, 0 failures

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@jamis jamis commented Oct 20, 2015

Test failures are wonderful, too:

  1) Mater says `to not to' to mean false
     Failure/Error: expect(true).to not_to
       expected true to not to
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