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require 'spec_helper'
require 'mspec/expectations/expectations'
require 'mspec/matchers'
RSpec.describe BeFalseMatcher do
it "matches when actual is false" do
expect(BeFalseMatcher.new.matches?(false)).to eq(true)
end
it "does not match when actual is not false" do
expect(BeFalseMatcher.new.matches?("")).to eq(false)
expect(BeFalseMatcher.new.matches?(true)).to eq(false)
expect(BeFalseMatcher.new.matches?(nil)).to eq(false)
expect(BeFalseMatcher.new.matches?(0)).to eq(false)
end
it "provides a useful failure message" do
matcher = BeFalseMatcher.new
matcher.matches?("some string")
expect(matcher.failure_message).to eq(["Expected \"some string\"", "to be false"])
end
it "provides a useful negative failure message" do
matcher = BeFalseMatcher.new
matcher.matches?(false)
expect(matcher.negative_failure_message).to eq(["Expected false", "not to be false"])
end
end
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