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util_test.cpp
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/
util_test.cpp
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#include "util_test.h"
#include "flatbuffers/util.h"
#include "test_assert.h"
namespace flatbuffers {
namespace tests {
namespace {
template<typename T>
void NumericUtilsTestInteger(const char *lower, const char *upper) {
T x;
TEST_EQ(flatbuffers::StringToNumber("1q", &x), false);
TEST_EQ(x, 0);
TEST_EQ(flatbuffers::StringToNumber(upper, &x), false);
TEST_EQ(x, flatbuffers::numeric_limits<T>::max());
TEST_EQ(flatbuffers::StringToNumber(lower, &x), false);
auto expval = flatbuffers::is_unsigned<T>::value
? flatbuffers::numeric_limits<T>::max()
: flatbuffers::numeric_limits<T>::lowest();
TEST_EQ(x, expval);
}
template<typename T>
void NumericUtilsTestFloat(const char *lower, const char *upper) {
T f;
TEST_EQ(flatbuffers::StringToNumber("", &f), false);
TEST_EQ(flatbuffers::StringToNumber("1q", &f), false);
TEST_EQ(f, 0);
TEST_EQ(flatbuffers::StringToNumber(upper, &f), true);
TEST_EQ(f, +flatbuffers::numeric_limits<T>::infinity());
TEST_EQ(flatbuffers::StringToNumber(lower, &f), true);
TEST_EQ(f, -flatbuffers::numeric_limits<T>::infinity());
}
} // namespace
void NumericUtilsTest() {
NumericUtilsTestInteger<uint64_t>("-1", "18446744073709551616");
NumericUtilsTestInteger<uint8_t>("-1", "256");
NumericUtilsTestInteger<int64_t>("-9223372036854775809",
"9223372036854775808");
NumericUtilsTestInteger<int8_t>("-129", "128");
NumericUtilsTestFloat<float>("-3.4029e+38", "+3.4029e+38");
NumericUtilsTestFloat<float>("-1.7977e+308", "+1.7977e+308");
}
void IsAsciiUtilsTest() {
char c = -128;
for (int cnt = 0; cnt < 256; cnt++) {
auto alpha = (('a' <= c) && (c <= 'z')) || (('A' <= c) && (c <= 'Z'));
auto dec = (('0' <= c) && (c <= '9'));
auto hex = (('a' <= c) && (c <= 'f')) || (('A' <= c) && (c <= 'F'));
TEST_EQ(flatbuffers::is_alpha(c), alpha);
TEST_EQ(flatbuffers::is_alnum(c), alpha || dec);
TEST_EQ(flatbuffers::is_digit(c), dec);
TEST_EQ(flatbuffers::is_xdigit(c), dec || hex);
c += 1;
}
}
void UtilConvertCase() {
{
struct TestCase {
std::string input;
flatbuffers::Case output_case;
std::string expected_output;
};
std::vector<TestCase> cases;
// Tests for the common cases
cases.push_back({ "the_quick_brown_fox", flatbuffers::Case::kUpperCamel,
"TheQuickBrownFox" });
cases.push_back({ "the_quick_brown_fox", flatbuffers::Case::kLowerCamel,
"theQuickBrownFox" });
cases.push_back({ "the_quick_brown_fox", flatbuffers::Case::kSnake,
"the_quick_brown_fox" });
cases.push_back({ "the_quick_brown_fox", flatbuffers::Case::kScreamingSnake,
"THE_QUICK_BROWN_FOX" });
cases.push_back({ "the_quick_brown_fox", flatbuffers::Case::kAllLower,
"the_quick_brown_fox" });
cases.push_back({ "the_quick_brown_fox", flatbuffers::Case::kAllUpper,
"THE_QUICK_BROWN_FOX" });
cases.push_back({ "the_quick_brown_fox", flatbuffers::Case::kUnknown,
"the_quick_brown_fox" });
cases.push_back({ "the_quick_brown_fox", flatbuffers::Case::kKeep,
"the_quick_brown_fox" });
cases.push_back({ "the_quick_brown_fox", flatbuffers::Case::kSnake2,
"the_quick_brown_fox" });
// Tests for some snake_cases where the _ is oddly placed or
// missing.
cases.push_back({ "single", flatbuffers::Case::kUpperCamel, "Single" });
cases.push_back({ "Single", flatbuffers::Case::kUpperCamel, "Single" });
cases.push_back({ "_leading", flatbuffers::Case::kUpperCamel, "_leading" });
cases.push_back(
{ "trailing_", flatbuffers::Case::kUpperCamel, "Trailing_" });
cases.push_back({ "double__underscore", flatbuffers::Case::kUpperCamel,
"Double_underscore" });
cases.push_back({ "single", flatbuffers::Case::kLowerCamel, "single" });
cases.push_back({ "Single", flatbuffers::Case::kLowerCamel, "Single" });
cases.push_back({ "_leading", flatbuffers::Case::kLowerCamel, "Leading" });
cases.push_back(
{ "trailing_", flatbuffers::Case::kLowerCamel, "trailing_" });
cases.push_back({ "double__underscore", flatbuffers::Case::kLowerCamel,
"double_underscore" });
// Tests for some output snake_cases
cases.push_back({ "single", flatbuffers::Case::kSnake, "single" });
cases.push_back({ "single", flatbuffers::Case::kScreamingSnake, "SINGLE" });
cases.push_back(
{ "_leading", flatbuffers::Case::kScreamingSnake, "_LEADING" });
cases.push_back(
{ "trailing_", flatbuffers::Case::kScreamingSnake, "TRAILING_" });
cases.push_back({ "double__underscore", flatbuffers::Case::kScreamingSnake,
"DOUBLE__UNDERSCORE" });
for (auto &test_case : cases) {
TEST_EQ(test_case.expected_output,
flatbuffers::ConvertCase(test_case.input, test_case.output_case));
}
}
// Tests for the non snake_case inputs.
{
struct TestCase {
flatbuffers::Case input_case;
std::string input;
flatbuffers::Case output_case;
std::string expected_output;
};
std::vector<TestCase> cases;
cases.push_back({ flatbuffers::Case::kUpperCamel, "TheQuickBrownFox",
flatbuffers::Case::kSnake, "the_quick_brown_fox" });
cases.push_back({ flatbuffers::Case::kLowerCamel, "theQuickBrownFox",
flatbuffers::Case::kSnake, "the_quick_brown_fox" });
cases.push_back({ flatbuffers::Case::kSnake, "the_quick_brown_fox",
flatbuffers::Case::kSnake, "the_quick_brown_fox" });
cases.push_back({ flatbuffers::Case::kScreamingSnake, "THE_QUICK_BROWN_FOX",
flatbuffers::Case::kSnake, "THE_QUICK_BROWN_FOX" });
cases.push_back({ flatbuffers::Case::kAllUpper, "SINGLE",
flatbuffers::Case::kSnake, "SINGLE" });
cases.push_back({ flatbuffers::Case::kAllLower, "single",
flatbuffers::Case::kSnake, "single" });
cases.push_back({ flatbuffers::Case::kUpperCamel, "ABCtest",
flatbuffers::Case::kSnake, "abctest" });
cases.push_back({ flatbuffers::Case::kUpperCamel, "tHe_qUiCk_BrOwN_fOx",
flatbuffers::Case::kKeep, "tHe_qUiCk_BrOwN_fOx" });
cases.push_back({ flatbuffers::Case::kLowerCamel, "theQuick12345Fox",
flatbuffers::Case::kSnake, "the_quick_12345fox" });
cases.push_back({ flatbuffers::Case::kLowerCamel, "a12b34c45",
flatbuffers::Case::kSnake, "a_12b_34c_45" });
cases.push_back({ flatbuffers::Case::kLowerCamel, "a12b34c45",
flatbuffers::Case::kSnake2, "a12_b34_c45" });
for (auto &test_case : cases) {
TEST_EQ(test_case.expected_output,
flatbuffers::ConvertCase(test_case.input, test_case.output_case,
test_case.input_case));
}
}
}
} // namespace tests
} // namespace flatbuffers