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e9b16970fe
This encoding scheme comes from section 5 of RFC 4648, as an alternative to the standard base64 encode/decode methods. The only difference is that the last two characters are replaced with '-' and '_', as '+' and '/' are not safe in URLs or filenames.
117 lines
4.3 KiB
C++
117 lines
4.3 KiB
C++
/*
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* Copyright (c) 2020, Tom Lebreux <tomlebreux@hotmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibTest/TestCase.h>
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#include <AK/Base64.h>
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#include <AK/ByteString.h>
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#include <string.h>
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TEST_CASE(test_decode)
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{
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auto decode_equal = [&](StringView input, StringView expected) {
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auto decoded = TRY_OR_FAIL(decode_base64(input));
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EXPECT(ByteString::copy(decoded) == expected);
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EXPECT(expected.length() <= calculate_base64_decoded_length(input.bytes()));
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};
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decode_equal(""sv, ""sv);
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decode_equal("Zg=="sv, "f"sv);
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decode_equal("Zm8="sv, "fo"sv);
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decode_equal("Zm9v"sv, "foo"sv);
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decode_equal("Zm9vYg=="sv, "foob"sv);
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decode_equal("Zm9vYmE="sv, "fooba"sv);
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decode_equal("Zm9vYmFy"sv, "foobar"sv);
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decode_equal("Z m\r9\n v\v Ym\tFy"sv, "foobar"sv);
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EXPECT_EQ(decode_base64(" ZD Qg\r\nPS An Zm91cic\r\n 7"sv).value(), decode_base64("ZDQgPSAnZm91cic7"sv).value());
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decode_equal("aGVsbG8/d29ybGQ="sv, "hello?world"sv);
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}
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TEST_CASE(test_decode_invalid)
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{
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EXPECT(decode_base64(("asdf\xffqwe"sv)).is_error());
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EXPECT(decode_base64(("asdf\x80qwe"sv)).is_error());
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EXPECT(decode_base64(("asdf:qwe"sv)).is_error());
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EXPECT(decode_base64(("asdf=qwe"sv)).is_error());
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EXPECT(decode_base64("aGVsbG8_d29ybGQ="sv).is_error());
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EXPECT(decode_base64url("aGVsbG8/d29ybGQ="sv).is_error());
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}
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TEST_CASE(test_decode_only_padding)
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{
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// Only padding is not allowed
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EXPECT(decode_base64("="sv).is_error());
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EXPECT(decode_base64("=="sv).is_error());
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EXPECT(decode_base64("==="sv).is_error());
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EXPECT(decode_base64("===="sv).is_error());
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EXPECT(decode_base64url("="sv).is_error());
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EXPECT(decode_base64url("=="sv).is_error());
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EXPECT(decode_base64url("==="sv).is_error());
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EXPECT(decode_base64url("===="sv).is_error());
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}
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TEST_CASE(test_encode)
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{
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auto encode_equal = [&](StringView input, StringView expected) {
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auto encoded = MUST(encode_base64(input.bytes()));
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EXPECT(encoded == expected);
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EXPECT_EQ(expected.length(), calculate_base64_encoded_length(input.bytes()));
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};
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encode_equal(""sv, ""sv);
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encode_equal("f"sv, "Zg=="sv);
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encode_equal("fo"sv, "Zm8="sv);
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encode_equal("foo"sv, "Zm9v"sv);
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encode_equal("foob"sv, "Zm9vYg=="sv);
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encode_equal("fooba"sv, "Zm9vYmE="sv);
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encode_equal("foobar"sv, "Zm9vYmFy"sv);
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}
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TEST_CASE(test_urldecode)
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{
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auto decode_equal = [&](StringView input, StringView expected) {
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auto decoded = TRY_OR_FAIL(decode_base64url(input));
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EXPECT(ByteString::copy(decoded) == expected);
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EXPECT(expected.length() <= calculate_base64_decoded_length(input.bytes()));
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};
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decode_equal(""sv, ""sv);
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decode_equal("Zg=="sv, "f"sv);
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decode_equal("Zm8="sv, "fo"sv);
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decode_equal("Zm9v"sv, "foo"sv);
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decode_equal("Zm9vYg=="sv, "foob"sv);
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decode_equal("Zm9vYmE="sv, "fooba"sv);
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decode_equal("Zm9vYmFy"sv, "foobar"sv);
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decode_equal("Z m\r9\n v\v Ym\tFy"sv, "foobar"sv);
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decode_equal("TG9yZW0gaXBzdW0gZG9sb3Igc2l0IGFtZXQsIGNvbnNlY3RldHVyIGFkaXBpc2NpbmcgZWxpdCwgc2VkIGRvIGVpdXNtb2QgdGVtcG9yIGluY2lkaWR1bnQgdXQgbGFib3JlIGV0IGRvbG9yZSBtYWduYSBhbGlxdWEu"sv, "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua."sv);
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decode_equal("aGVsbG8_d29ybGQ="sv, "hello?world"sv);
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}
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TEST_CASE(test_urlencode)
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{
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auto encode_equal = [&](StringView input, StringView expected) {
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auto encoded = MUST(encode_base64url(input.bytes()));
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EXPECT(encoded == expected);
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EXPECT_EQ(expected.length(), calculate_base64_encoded_length(input.bytes()));
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};
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encode_equal(""sv, ""sv);
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encode_equal("f"sv, "Zg=="sv);
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encode_equal("fo"sv, "Zm8="sv);
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encode_equal("foo"sv, "Zm9v"sv);
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encode_equal("foob"sv, "Zm9vYg=="sv);
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encode_equal("fooba"sv, "Zm9vYmE="sv);
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encode_equal("foobar"sv, "Zm9vYmFy"sv);
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encode_equal("Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua."sv, "TG9yZW0gaXBzdW0gZG9sb3Igc2l0IGFtZXQsIGNvbnNlY3RldHVyIGFkaXBpc2NpbmcgZWxpdCwgc2VkIGRvIGVpdXNtb2QgdGVtcG9yIGluY2lkaWR1bnQgdXQgbGFib3JlIGV0IGRvbG9yZSBtYWduYSBhbGlxdWEu"sv);
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encode_equal("hello?world"sv, "aGVsbG8_d29ybGQ="sv);
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encode_equal("hello!!world"sv, "aGVsbG8hIXdvcmxk"sv);
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}
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