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Feature: define diffable matcher
When a matcher is defined as diffable, and the --diff
flag is set, the output will include a diff of the submitted
objects.
Scenario: define a diffable matcher
Given a file named "diffable_matcher_spec.rb" with:
"""
Spec::Matchers.define :be_just_like do |expected|
match do |actual|
actual == expected
end
diffable
end
describe "this" do
it {should be_just_like("that")}
end
"""
When I run "spec diffable_matcher_spec.rb --diff"
Then the exit code should be 256
And the stdout should include "should be just like \"that\""
And the stdout should include "Diff:\n@@ -1,2 +1,2 @@\n-that\n+this"
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