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Contents
Feature: heckle a class
As an RSpec user who wants to verify that
my specs cover what I think it covers
I want to heckle a class
Scenario: Heckle finds problems
Given a file named "heckle_fail_spec.rb" with:
"""
class Thing
def a_or_b
if true
"a"
else
"b"
end
end
end
describe Thing do
it "returns a for true" do
Thing.new.a_or_b.should == "a"
end
end
"""
When I run "spec heckle_fail_spec.rb --heckle Thing"
Then the stdout should match "The following mutations didn't cause test failures:"
But the stdout should not match "FAILED"
Scenario: Heckle does not find a problem
Given a file named "heckle_success_spec.rb" with:
"""
class Thing
def a_or_b(key)
if key
"a"
else
"b"
end
end
end
describe Thing do
it "returns a for true" do
Thing.new.a_or_b(true).should == "a"
end
it "returns b for false" do
Thing.new.a_or_b(false).should == "b"
end
end
"""
When I run "spec heckle_success_spec.rb --heckle Thing"
Then the stdout should match "No mutants survived"
But the stdout should not match "FAILED"
Version data entries
40 entries across 40 versions & 9 rubygems