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#include "simdutf.h"
#include <array>
#include <vector>
#include <tests/helpers/random_utf16.h>
#include <tests/helpers/test.h>
#include <tests/helpers/utf16.h>
TEST_LOOP(validate_utf16be_ascii) {
simdutf::tests::helpers::random_utf16 generator{seed, 1, 0};
auto utf16{generator.generate_be(512, seed)};
generator.to_ascii_be(utf16);
ASSERT_TRUE(
implementation.validate_utf16be_as_ascii(utf16.data(), utf16.size()));
utf16[utf16.size() / 2] = 0xC0C0;
ASSERT_FALSE(
implementation.validate_utf16be_as_ascii(utf16.data(), utf16.size()));
}
TEST_LOOP(validate_utf16be_returns_true_for_valid_input_single_words) {
simdutf::tests::helpers::random_utf16 generator{seed, 1, 0};
const auto utf16{generator.generate_be(512, seed)};
ASSERT_TRUE(implementation.validate_utf16be(
reinterpret_cast<const char16_t *>(utf16.data()), utf16.size()));
}
TEST_LOOP(validate_utf16be_returns_true_for_valid_input_surrogate_pairs_short) {
simdutf::tests::helpers::random_utf16 generator{seed, 0, 1};
const auto utf16{generator.generate_be(8)};
ASSERT_TRUE(implementation.validate_utf16be(
reinterpret_cast<const char16_t *>(utf16.data()), utf16.size()));
}
TEST_LOOP(validate_utf16be_returns_true_for_valid_input_surrogate_pairs) {
simdutf::tests::helpers::random_utf16 generator{seed, 0, 1};
const auto utf16{generator.generate_be(512)};
ASSERT_TRUE(implementation.validate_utf16be(
reinterpret_cast<const char16_t *>(utf16.data()), utf16.size()));
}
// mixed = either 16-bit or 32-bit codewords
TEST(validate_utf16be_returns_true_for_valid_input_mixed) {
uint32_t seed{1234};
simdutf::tests::helpers::random_utf16 generator{seed, 1, 1};
const auto utf16{generator.generate_be(512)};
ASSERT_TRUE(implementation.validate_utf16be(
reinterpret_cast<const char16_t *>(utf16.data()), utf16.size()));
}
TEST(validate_utf16be_returns_true_for_empty_string) {
const char16_t *buf = (char16_t *)"";
ASSERT_TRUE(implementation.validate_utf16be(buf, 0));
}
// The first word must not be in range [0xDC00 .. 0xDFFF]
/*
2.2 Decoding UTF-16
[...]
1) If W1 < 0xD800 or W1 > 0xDFFF, the character value U is the value
of W1. Terminate.
2) Determine if W1 is between 0xD800 and 0xDBFF. If not, the sequence
is in error [...]
*/
TEST_LOOP(
validate_utf16be_returns_false_when_input_has_wrong_first_word_value) {
simdutf::tests::helpers::random_utf16 generator{seed, 1, 0};
auto utf16{generator.generate_be(128)};
const size_t len = utf16.size();
for (char16_t wrong_value = 0xdc00; wrong_value <= 0xdfff; wrong_value++) {
for (size_t i = 0; i < utf16.size(); i++) {
const char16_t old = utf16[i];
utf16[i] = to_utf16be(wrong_value);
ASSERT_FALSE(implementation.validate_utf16be(
reinterpret_cast<const char16_t *>(utf16.data()), len));
utf16[i] = old;
}
}
}
/*
RFC-2781:
3) [..] if W2 is not between 0xDC00 and 0xDFFF, the sequence is in error.
Terminate.
*/
TEST(validate_utf16be_returns_false_when_input_has_wrong_second_word_value) {
uint32_t seed{1234};
simdutf::tests::helpers::random_utf16 generator{seed, 1, 0};
auto utf16{generator.generate_be(128)};
const size_t len = utf16.size();
const std::array<char16_t, 5> sample_wrong_second_word{
to_utf16be(0x0000), to_utf16be(0x0010), to_utf16be(0xffdb),
to_utf16be(0x00e0), to_utf16be(0xffff)};
const char16_t valid_surrogate_W1 = to_utf16be(0xd800);
for (char16_t W2 : sample_wrong_second_word) {
for (size_t i = 0; i < len - 1; i++) {
const char16_t old_W1 = utf16[i + 0];
const char16_t old_W2 = utf16[i + 1];
utf16[i + 0] = valid_surrogate_W1;
utf16[i + 1] = W2;
ASSERT_FALSE(implementation.validate_utf16be(
reinterpret_cast<const char16_t *>(utf16.data()), len));
utf16[i + 0] = old_W1;
utf16[i + 1] = old_W2;
}
}
}
/*
RFC-2781:
3) If there is no W2 (that is, the sequence ends with W1) [...]
the sequence is in error. Terminate.
*/
TEST(validate_utf16be_returns_false_when_input_is_truncated) {
const char16_t valid_surrogate_W1 = to_utf16be(0xd800);
uint32_t seed{1234};
simdutf::tests::helpers::random_utf16 generator{seed, 1, 0};
for (size_t size = 1; size < 128; size++) {
auto utf16{generator.generate_be(128)};
const size_t len = utf16.size();
utf16[size - 1] = valid_surrogate_W1;
ASSERT_FALSE(implementation.validate_utf16be(
reinterpret_cast<const char16_t *>(utf16.data()), len));
}
}
TEST_MAIN
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