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require 'rspec/matchers'
# Special matcher for comparing encoded strings so that
# we don't run any expectation failures through the Differ,
# which also relies on EncodedString. Instead, confirm the
# strings have the same bytes.
RSpec::Matchers.define :be_identical_string do |expected|
if String.method_defined?(:encoding)
match do
expected_encoding? &&
actual.bytes.to_a == expected.bytes.to_a
end
failure_message do
"expected\n#{actual.inspect} (#{actual.encoding.name}) to be identical to\n"\
"#{expected.inspect} (#{expected.encoding.name})\n"\
"The exact bytes are printed below for more detail:\n"\
"#{actual.bytes.to_a}\n"\
"#{expected.bytes.to_a}\n"\
end
# Depends on chaining :with_same_encoding for it to
# check for string encoding.
def expected_encoding?
if defined?(@expect_same_encoding) && @expect_same_encoding
actual.encoding == expected.encoding
else
true
end
end
else
match do
actual.split(//) == expected.split(//)
end
failure_message do
"expected\n#{actual.inspect} to be identical to\n#{expected.inspect}\n"
end
end
chain :with_same_encoding do
@expect_same_encoding ||= true
end
end
RSpec::Matchers.alias_matcher :a_string_identical_to, :be_identical_string
RSpec::Matchers.alias_matcher :be_diffed_as, :be_identical_string
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