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require 'test/unit'
require 'digest'
require_relative '../lib/with_different_ofs.rb'
class TestDigestExtend < Test::Unit::TestCase
extend DifferentOFS
class MyDigest < Digest::Class
def initialize(*arg)
super
@buf = []
end
def initialize_copy(org)
@buf = org.buf.dup
end
def update(arg)
@buf << arg
self
end
alias << update
def finish
(@buf.join('').length % 256).chr
end
def reset
@buf.clear
self
end
protected
def buf
@buf
end
end
def setup
@MyDigest = Class.new(MyDigest)
end
def test_digest_s_hexencode
assert_equal('', Digest.hexencode(''))
assert_equal('0102', Digest.hexencode("\1\2"))
assert_equal(
(0..0xff).to_a.map { |c| sprintf("%02x", c ) }.join(''),
Digest.hexencode((0..0xff).to_a.map { |c| c.chr }.join(''))
)
assert_equal(Encoding::US_ASCII, Digest.hexencode("\1\2").encoding)
end
def test_class_reset
a = Digest::SHA1.new
base = a.to_s
assert_equal(base, a.reset.to_s)
b = a.new
assert_equal(base, b.to_s)
b.update('1')
assert_not_equal(base, b.to_s)
assert_equal(base, b.reset.to_s)
end
def test_digest
assert_equal("\3", MyDigest.digest("foo"))
end
def test_hexdigest
assert_equal("03", @MyDigest.hexdigest("foo"))
end
def test_context
digester = @MyDigest.new
digester.update("foo")
assert_equal("\3", digester.digest)
digester.update("foobar")
assert_equal("\t", digester.digest)
digester.update("foo")
assert_equal("\f", digester.digest)
end
def test_new
a = Digest::SHA1.new
b = a.new
obj = a.to_s
assert_equal(obj, a.to_s)
assert_equal(obj, b.to_s)
a.update('1')
assert_not_equal(obj, a.to_s)
assert_equal(obj, b.to_s)
end
def test_digest_hexdigest
[:digest, :hexdigest].each do |m|
exp_1st = "\3"; exp_1st = Digest.hexencode(exp_1st) if m == :hexdigest
exp_2nd = "\6"; exp_2nd = Digest.hexencode(exp_2nd) if m == :hexdigest
digester = @MyDigest.new
digester.update("foo")
obj = digester.send(m)
# digest w/o param does not reset the org digester.
assert_equal(exp_1st, obj)
digester.update("bar")
obj = digester.send(m)
assert_equal(exp_2nd, obj)
obj = digester.send(m, "baz")
# digest with param resets the org digester.
assert_equal(exp_1st, obj)
end
end
def test_digest_hexdigest_bang
[:digest!, :hexdigest!].each do |m|
exp_1st = "\3"; exp_1st = Digest.hexencode(exp_1st) if m == :hexdigest!
digester = @MyDigest.new
digester.update("foo")
obj = digester.send(m) # digest! always resets the org digester.
assert_equal(exp_1st, obj)
digester.update("bar")
obj = digester.send(m)
assert_equal(exp_1st, obj)
end
end
def test_to_s
digester = @MyDigest.new
digester.update("foo")
assert_equal("03", digester.to_s)
end
def test_length
@MyDigest.class_eval do
def digest_length
2
end
end
digester = @MyDigest.new
assert_equal(2, digester.length)
assert_equal(2, digester.size)
end
def test_digest_length # breaks @MyDigest#digest_length
assert_equal(1, @MyDigest.new.digest_length)
@MyDigest.class_eval do
def digest_length
2
end
end
assert_equal(2, @MyDigest.new.digest_length)
end
def test_block_length
assert_raises(RuntimeError) do
@MyDigest.new.block_length
end
end
end
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