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require "spec"
require "base64"
require "crystal/digest/md5"
require "spec/helpers/string"
# rearrange parameters for `assert_prints`
{% for method in %w(encode strict_encode urlsafe_encode) %}
private def base64_{{ method.id }}(io : IO, data, *args)
Base64.{{ method.id }}(data, io, *args)
end
private def base64_{{ method.id }}(data, *args)
Base64.{{ method.id }}(data, *args)
end
{% end %}
describe "Base64" do
context "simple test" do
eqs = {"" => "", "a" => "YQ==\n", "ab" => "YWI=\n", "abc" => "YWJj\n",
"abcd" => "YWJjZA==\n", "abcde" => "YWJjZGU=\n", "abcdef" => "YWJjZGVm\n",
"abcdefg" => "YWJjZGVmZw==\n"}
eqs.each do |a, b|
it "encode #{a.inspect} to #{b.inspect}" do
assert_prints base64_encode(a), b
end
it "decode from #{b.inspect} to #{a.inspect}" do
Base64.decode(b).should eq(a.to_slice)
Base64.decode_string(b).should eq(a)
end
end
end
context "\n in multiple places" do
eqs = {"abcd" => "YWJj\nZA==\n", "abcde" => "YWJj\nZGU=\n", "abcdef" => "YWJj\nZGVm\n",
"abcdefg" => "YWJj\nZGVmZw==\n", "abcdefg" => "YWJj\nZGVm\nZw==\n",
}
eqs.each do |a, b|
it "decode from #{b.inspect} to #{a.inspect}" do
Base64.decode(b).should eq(a.to_slice)
Base64.decode_string(b).should eq(a)
end
end
end
it "encodes byte slice" do
slice = Bytes.new(5) { 1_u8 }
assert_prints base64_encode(slice), "AQEBAQE=\n"
assert_prints base64_strict_encode(slice), "AQEBAQE="
end
it "encodes empty slice" do
slice = Bytes.empty
assert_prints base64_encode(slice), ""
assert_prints base64_strict_encode(slice), ""
end
it "encodes static array" do
array = uninitialized StaticArray(UInt8, 5)
(0...5).each { |i| array[i] = 1_u8 }
assert_prints base64_encode(array), "AQEBAQE=\n"
assert_prints base64_strict_encode(array), "AQEBAQE="
end
describe "base" do
eqs = {"Send reinforcements" => "U2VuZCByZWluZm9yY2VtZW50cw==\n",
"Now is the time for all good coders\nto learn Crystal" => "Tm93IGlzIHRoZSB0aW1lIGZvciBhbGwgZ29vZCBjb2RlcnMKdG8gbGVhcm4g\nQ3J5c3RhbA==\n",
"This is line one\nThis is line two\nThis is line three\nAnd so on...\n" => "VGhpcyBpcyBsaW5lIG9uZQpUaGlzIGlzIGxpbmUgdHdvClRoaXMgaXMgbGlu\nZSB0aHJlZQpBbmQgc28gb24uLi4K\n",
"hahah⊙ⓧ⊙" => "aGFoYWjiipnik6fiipk=\n"}
eqs.each do |a, b|
it "encode #{a.inspect} to #{b.inspect}" do
assert_prints base64_encode(a), b
end
it "decode from #{b.inspect} to #{a.inspect}" do
Base64.decode(b).should eq(a.to_slice)
Base64.decode_string(b).should eq(a)
end
end
it "decode from strict form" do
Base64.decode_string("Tm93IGlzIHRoZSB0aW1lIGZvciBhbGwgZ29vZCBjb2RlcnMKdG8gbGVhcm4gQ3J5c3RhbA==").should eq(
"Now is the time for all good coders\nto learn Crystal")
end
it "encode to stream returns number of written characters" do
io = IO::Memory.new
count = Base64.encode("Now is the time for all good coders\nto learn Crystal", io)
count.should eq 74
end
it "decode from stream returns number of written bytes" do
io = IO::Memory.new
count = Base64.decode("Tm93IGlzIHRoZSB0aW1lIGZvciBhbGwgZ29vZCBjb2RlcnMKdG8gbGVhcm4gQ3J5c3RhbA==", io)
count.should eq 52
end
it "big message" do
a = "a" * 100000
b = Base64.encode(a)
Crystal::Digest::MD5.hexdigest(Base64.decode_string(b)).should eq(Crystal::Digest::MD5.hexdigest(a))
end
it "works for most characters" do
a = String.build(65536 * 4) do |buf|
65536.times { |i| buf << (i + 1).unsafe_chr }
end
b = Base64.encode(a)
Crystal::Digest::MD5.hexdigest(Base64.decode_string(b)).should eq(Crystal::Digest::MD5.hexdigest(a))
end
end
describe "decode cases" do
it "decode \r\n" do
decoded = "hahah⊙ⓧ⊙"
{"aGFo\r\nYWjiipnik6fiipk=\r\n", "aGFo\r\nYWjiipnik6fiipk=\r\n\r\n"}.each do |encoded|
Base64.decode(encoded).should eq(decoded.to_slice)
Base64.decode_string(encoded).should eq(decoded)
end
end
it "decode \n in multiple places" do
decoded = "hahah⊙ⓧ⊙"
{"aGFoYWjiipnik6fiipk=", "aGFo\nYWjiipnik6fiipk=", "aGFo\nYWji\nipnik6fiipk=",
"aGFo\nYWji\nipni\nk6fiipk=", "aGFo\nYWji\nipni\nk6fi\nipk=",
"aGFo\nYWji\nipni\nk6fi\nipk=\n"}.each do |encoded|
Base64.decode(encoded).should eq(decoded.to_slice)
Base64.decode_string(encoded).should eq(decoded)
end
end
it "raise error when \n in incorrect place" do
expect_raises Base64::Error do
Base64.decode("aG\nFoYWjiipnik6fiipk=")
end
expect_raises Base64::Error do
Base64.decode_string("aG\nFoYWjiipnik6fiipk=")
end
end
it "raise error when incorrect symbol" do
expect_raises Base64::Error do
Base64.decode("()")
end
expect_raises Base64::Error do
Base64.decode_string("()")
end
end
it "raise error when incorrect size" do
expect_raises Base64::Error do
Base64.decode("a")
end
expect_raises Base64::Error do
Base64.decode_string("a")
end
end
it "decode small tail after last \n, was a bug" do
s = "Tm93IGlzIHRoZSB0aW1lIGZvciBhbGwgZ29vZCBjb2RlcnMKdG8gbGVhcm4g\nnA==\n"
Base64.decode(s).should eq Bytes[78, 111, 119, 32, 105, 115, 32, 116, 104, 101, 32, 116, 105, 109, 101, 32, 102, 111, 114, 32, 97, 108, 108, 32, 103, 111, 111, 100, 32, 99, 111, 100, 101, 114, 115, 10, 116, 111, 32, 108, 101, 97, 114, 110, 32, 156]
end
end
describe "strict" do
it "encode" do
assert_prints base64_strict_encode("Now is the time for all good coders\nto learn Crystal"),
"Tm93IGlzIHRoZSB0aW1lIGZvciBhbGwgZ29vZCBjb2RlcnMKdG8gbGVhcm4gQ3J5c3RhbA=="
end
it "with spec symbols" do
s = String.build { |b| (160..179).each { |i| b << i.chr } }
se = "wqDCocKiwqPCpMKlwqbCp8KowqnCqsKrwqzCrcKuwq/CsMKxwrLCsw=="
assert_prints base64_strict_encode(s), se
end
it "encode to stream returns number of written characters" do
s = String.build { |b| (160..179).each { |i| b << i.chr } }
io = IO::Memory.new
Base64.strict_encode(s, io).should eq(56)
end
end
describe "urlsafe" do
it "work" do
s = String.build { |b| (160..179).each { |i| b << i.chr } }
se = "wqDCocKiwqPCpMKlwqbCp8KowqnCqsKrwqzCrcKuwq_CsMKxwrLCsw=="
assert_prints base64_urlsafe_encode(s), se
end
it "encode to stream returns number of written characters" do
s = String.build { |b| (160..179).each { |i| b << i.chr } }
io = IO::Memory.new
Base64.urlsafe_encode(s, io).should eq(56)
end
end
end
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