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require 'spec_helper'
require 'mspec/expectations/expectations'
require 'mspec/matchers'
RSpec.describe BeEmptyMatcher do
it "matches when actual is empty" do
expect(BeEmptyMatcher.new.matches?("")).to eq(true)
end
it "does not match when actual is not empty" do
expect(BeEmptyMatcher.new.matches?([10])).to eq(false)
end
it "provides a useful failure message" do
matcher = BeEmptyMatcher.new
matcher.matches?("not empty string")
expect(matcher.failure_message).to eq(["Expected \"not empty string\"", "to be empty"])
end
it "provides a useful negative failure message" do
matcher = BeEmptyMatcher.new
matcher.matches?("")
expect(matcher.negative_failure_message).to eq(["Expected \"\"", "not to be empty"])
end
end
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