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pvData/testApp/misc/testTypeCast.cpp
Michael Davidsaver f1553cc90e Move NOMINMAX to configure/CONFIG_SITE 
The macro must be defined before MS system headers are
included.

This rev. remove #define NOMINMAX from public headers,
but no public headers use min()/max() and this was
never the correct way to use this macro as by convention
library headers are included after system headers,
which is too late to have an effect.
2018-05-28 11:24:49 -07:00

447 lines
13 KiB
C++
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/*
* Copyright information and license terms for this software can be
* found in the file LICENSE that is included with the distribution
*/
/* Author: Michael Davidsaver */
#include <fstream>
#include <iostream>
#include <algorithm>
#include <limits>
#include <typeinfo>
#include <stddef.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <stdio.h>
#include <float.h>
#include <epicsMath.h>
#include <epicsUnitTest.h>
#include <testMain.h>
#include "pv/typeCast.h"
using std::string;
namespace {
// Mangle value to be printable as per print_convolute<>
template<typename T>
inline
typename epics::pvData::detail::print_convolute<T>::return_t
print(T v) {
return epics::pvData::detail::print_convolute<T>::op(v);
}
template<typename T>
struct testequal {
static bool op(T A, T B) {return A==B; }
};
template<>
struct testequal<double> {
static bool op(double A, double B) {return fabs(A-B)<1e-15; }
};
template<>
struct testequal<float> {
static bool op(float A, float B) {return fabs(A-B)<1e-7; }
};
template<typename TO, typename FROM>
struct testcase {
static void op(TO expect, FROM inp)
{
std::ostringstream msg;
TO actual;
try {
actual = ::epics::pvData::castUnsafe<TO,FROM>(inp);
//actual = ::epics::pvData::detail::cast_helper<TO,FROM>::op(inp);
} catch(std::runtime_error& e) {
msg<<"Failed to cast "
<<print(inp)<<" ("<<typeid(FROM).name()<<") -> "
<<print(expect)<<" ("<<typeid(TO).name()<<")\n Error: "
<<typeid(e).name()<<"("<<e.what()<<")";
testFail("%s", msg.str().c_str());
return;
}
if(!testequal<TO>::op(actual, expect)) {
msg<<"Failed cast gives unexpected value "
<<print(inp)<<" ("<<typeid(FROM).name()<<") -> "
<<print(expect)<<" ("<<typeid(TO).name()<<") yields: "
<<print(actual);
testFail("%s", msg.str().c_str());
return;
}
msg<<"cast "
<<print(inp)<<" ("<<typeid(FROM).name()<<") -> "
<<print(expect)<<" ("<<typeid(TO).name()<<") yields: "
<<print(actual);
testPass("%s", msg.str().c_str());
return;
}
};
template<typename TO, typename FROM>
struct testfail {
static void op(FROM inp)
{
std::ostringstream msg;
TO actual;
try {
actual = ::epics::pvData::castUnsafe<TO,FROM>(inp);
msg<<"Failed to generate expected error "
<<print(inp)<<" ("<<typeid(FROM).name()<<") -> ("
<<typeid(TO).name()<<") yields: "
<<actual;
testFail("%s", msg.str().c_str());
return;
} catch(std::runtime_error& e) {
msg<<"Got expected error "
<<print(inp)<<" ("<<typeid(FROM).name()<<") -> ("
<<typeid(TO).name()<<") fails with: "
<<e.what();
testPass("%s", msg.str().c_str());
return;
}
}
};
// Test cast
#define TEST(TTO, VTO, TFRO, VFRO) testcase<TTO, TFRO>::op(VTO, VFRO)
// Test cast and reverse
#define TEST2(TTO, VTO, TFRO, VFRO) TEST(TTO, VTO, TFRO, VFRO); TEST(TFRO, VFRO, TTO, VTO)
#define FAIL(TTO, TFRO, VFRO) testfail<TTO,TFRO>::op(VFRO)
} // end namespace
MAIN(testTypeCast)
{
testPlan(124);
try {
int8_t xint8=0;
uint8_t xuint8=0;
int16_t xint16=0;
uint16_t xuint16=0;
int32_t xint32=0;
uint32_t xuint32=0;
int64_t xint64=0;
uint64_t xuint64=0;
float xfloat=0.0;
double xdouble=0.0;
string xstring("0");
const char* xcstring = "0";
typedef float float_t;
typedef double double_t;
typedef string string_t;
typedef const char* cstring_t;
// force all possibilities to be compiled
#define CHECK(M, N) x## M = ::epics::pvData::castUnsafe<M ##_t>(x## N); \
std::transform(&x ## N, &x ## N+1, &x ## M, ::epics::pvData::castUnsafe<M ##_t,N ##_t>)
//#define CHECK(M, N) x## M = ::epics::pvData::detail::cast_helper<M ##_t,N ##_t>::op(x## N)
CHECK(int8, int8);
CHECK(int8, uint8);
CHECK(int8, int16);
CHECK(int8, uint16);
CHECK(int8, int32);
CHECK(int8, uint32);
CHECK(int8, int64);
CHECK(int8, uint64);
CHECK(int8, float);
CHECK(int8, double);
CHECK(int8, string);
CHECK(int8, cstring);
CHECK(uint8, int8);
CHECK(uint8, uint8);
CHECK(uint8, int16);
CHECK(uint8, uint16);
CHECK(uint8, int32);
CHECK(uint8, uint32);
CHECK(uint8, int64);
CHECK(uint8, uint64);
CHECK(uint8, float);
CHECK(uint8, double);
CHECK(uint8, string);
CHECK(uint8, cstring);
CHECK(int16, int8);
CHECK(int16, uint8);
CHECK(int16, int16);
CHECK(int16, uint16);
CHECK(int16, int32);
CHECK(int16, uint32);
CHECK(int16, int64);
CHECK(int16, uint64);
CHECK(int16, float);
CHECK(int16, double);
CHECK(int16, string);
CHECK(int16, cstring);
CHECK(uint16, int8);
CHECK(uint16, uint8);
CHECK(uint16, int16);
CHECK(uint16, uint16);
CHECK(uint16, int32);
CHECK(uint16, uint32);
CHECK(uint16, int64);
CHECK(uint16, uint64);
CHECK(uint16, float);
CHECK(uint16, double);
CHECK(uint16, string);
CHECK(uint16, cstring);
CHECK(int32, int8);
CHECK(int32, uint8);
CHECK(int32, int16);
CHECK(int32, uint16);
CHECK(int32, int32);
CHECK(int32, uint32);
CHECK(int32, int64);
CHECK(int32, uint64);
CHECK(int32, float);
CHECK(int32, double);
CHECK(int32, string);
CHECK(int32, cstring);
CHECK(uint32, int8);
CHECK(uint32, uint8);
CHECK(uint32, int16);
CHECK(uint32, uint16);
CHECK(uint32, int32);
CHECK(uint32, uint32);
CHECK(uint32, int64);
CHECK(uint32, uint64);
CHECK(uint32, float);
CHECK(uint32, double);
CHECK(uint32, string);
CHECK(uint32, cstring);
CHECK(int64, int8);
CHECK(int64, uint8);
CHECK(int64, int16);
CHECK(int64, uint16);
CHECK(int64, int32);
CHECK(int64, uint32);
CHECK(int64, int64);
CHECK(int64, uint64);
CHECK(int64, float);
CHECK(int64, double);
CHECK(int64, string);
CHECK(int64, cstring);
CHECK(uint64, int8);
CHECK(uint64, uint8);
CHECK(uint64, int16);
CHECK(uint64, uint16);
CHECK(uint64, int32);
CHECK(uint64, uint32);
CHECK(uint64, int64);
CHECK(uint64, uint64);
CHECK(uint64, float);
CHECK(uint64, double);
CHECK(uint64, string);
CHECK(uint64, cstring);
CHECK(float, int8);
CHECK(float, uint8);
CHECK(float, int16);
CHECK(float, uint16);
CHECK(float, int32);
CHECK(float, uint32);
CHECK(float, int64);
CHECK(float, uint64);
CHECK(float, float);
CHECK(float, double);
CHECK(float, string);
CHECK(float, cstring);
CHECK(double, int8);
CHECK(double, uint8);
CHECK(double, int16);
CHECK(double, uint16);
CHECK(double, int32);
CHECK(double, uint32);
CHECK(double, int64);
CHECK(double, uint64);
CHECK(double, float);
CHECK(double, double);
CHECK(double, string);
CHECK(double, cstring);
CHECK(string, int8);
CHECK(string, uint8);
CHECK(string, int16);
CHECK(string, uint16);
CHECK(string, int32);
CHECK(string, uint32);
CHECK(string, int64);
CHECK(string, uint64);
CHECK(string, float);
CHECK(string, double);
CHECK(string, string);
CHECK(string, cstring);
// cast to const char* not supported
#undef CHECK
testDiag("Integer signed <=> unsigned");
TEST2(uint8_t, std::numeric_limits<uint8_t>::max(), int8_t, -1);
TEST2(uint16_t, std::numeric_limits<uint16_t>::max(), int8_t, -1);
TEST2(uint32_t, std::numeric_limits<uint32_t>::max(), int8_t, -1);
TEST2(uint64_t, std::numeric_limits<uint64_t>::max(), int8_t, -1);
testDiag("Integer unsigned promote (and demote when in range)");
TEST2(uint16_t, 0xff, uint8_t, 0xff);
TEST2(uint32_t, 0xffff, uint16_t, 0xffff);
TEST2(uint64_t, 0xffffffffu, uint32_t, 0xffffffffu);
TEST2(int16_t, 0x7f, int8_t, 0x7f);
TEST2(int32_t, 0x7fff, int16_t, 0x7fff);
TEST2(int64_t, 0x7fffffff, int32_t, 0x7fffffff);
testDiag("Double to int w/ round towards zero (aka truncation)");
TEST(int32_t, 2, double, 2.1);
TEST(int32_t, 2, double, 2.5);
TEST(int32_t, 2, double, 2.7);
TEST(int32_t, -2, double, -2.1);
TEST(int32_t, -2, double, -2.5);
TEST(int32_t, -2, double, -2.7);
testDiag("Float to int w/ round towards zero (aka truncation)");
TEST(int32_t, 2, float, 2.1f);
TEST(int32_t, 2, float, 2.5f);
TEST(int32_t, 2, float, 2.7f);
TEST(int32_t, -2, float, -2.1f);
TEST(int32_t, -2, float, -2.5f);
TEST(int32_t, -2, float, -2.7f);
testDiag("string Printing/parsing");
TEST2(string, "1", int32_t, 1);
TEST2(string, "-1", int32_t, -1);
TEST2(string, "1", int8_t, 1);
TEST2(string, "-1", int8_t, -1);
TEST2(string, "1", uint8_t, 1);
TEST2(string, "127", int32_t, std::numeric_limits<int8_t>::max());
TEST2(string, "-128", int32_t, std::numeric_limits<int8_t>::min());
TEST2(string, "255", int32_t, std::numeric_limits<uint8_t>::max());
TEST2(string, "32767", int32_t, std::numeric_limits<int16_t>::max());
TEST2(string, "-32768", int32_t, std::numeric_limits<int16_t>::min());
TEST2(string, "65535", int32_t, std::numeric_limits<uint16_t>::max());
TEST2(string, "2147483647", int32_t, std::numeric_limits<int32_t>::max());
TEST2(string, "-2147483648", int32_t, std::numeric_limits<int32_t>::min());
TEST2(string, "4294967295", uint32_t, std::numeric_limits<uint32_t>::max());
TEST2(string, "9223372036854775807", int64_t, std::numeric_limits<int64_t>::max());
TEST2(string, "-9223372036854775808", int64_t, std::numeric_limits<int64_t>::min());
TEST2(string, "18446744073709551615", uint64_t, std::numeric_limits<uint64_t>::max());
TEST2(string, "1.1", double, 1.1);
TEST2(string, "1.1e+100", double, 1.1e100);
TEST2(string, "1.1e-100", double, 1.1e-100);
TEST(double, 1.1e100, string, "1.1E+100");
TEST(double, 1.1e100, const char*, "1.1E+100");
// any non-zero value is true
TEST(string, "true", epics::pvData::boolean, 100);
TEST2(string, "true", epics::pvData::boolean, 1);
TEST2(string, "false", epics::pvData::boolean, 0);
// Case insensitive
TEST(epics::pvData::boolean, 1, string, "True");
TEST(epics::pvData::boolean, 0, string, "False");
TEST(epics::pvData::boolean, 1, string, "TRUE");
TEST(epics::pvData::boolean, 0, string, "FALSE");
testDiag("string Parsing");
TEST(int32_t, 15, string, "0xf");
TEST(int32_t, 15, string, "0xF");
TEST(int32_t, -15, string, "-0xF");
TEST(int32_t, 16, string, "0x10");
TEST(int32_t, -16, string, "-0x10");
TEST(int32_t, 7, string, "07");
TEST(int32_t, 8, string, "010");
TEST(int32_t, -7, string, "-07");
TEST(int32_t, -8, string, "-010");
TEST(int64_t, 15, string, "0xf");
TEST(int64_t, 15, string, "0xF");
TEST(int64_t, -15, string, "-0xF");
TEST(int64_t, 16, string, "0x10");
TEST(int64_t, -16, string, "-0x10");
TEST(int64_t, 7, string, "07");
TEST(int64_t, 8, string, "010");
TEST(int64_t, -7, string, "-07");
TEST(int64_t, -8, string, "-010");
testDiag("string parsing errors");
FAIL(int32_t, string, "hello!");
FAIL(int32_t, string, "42 is the answer");
FAIL(int64_t, string, "hello!");
FAIL(int64_t, string, "42 is the answer");
FAIL(double, string, "hello!");
FAIL(double, string, "42 is the answer");
FAIL(int8_t, string, "1000");
FAIL(int8_t, string, "-1000");
FAIL(double, string, "1e+1000");
FAIL(double, string, "-1e+1000");
FAIL(epics::pvData::boolean, string, "hello");
FAIL(epics::pvData::boolean, string, "1");
FAIL(epics::pvData::boolean, string, "0");
FAIL(epics::pvData::boolean, string, "T");
FAIL(epics::pvData::boolean, string, "F");
testDiag("Floating point overflows");
TEST(float, FLT_MAX, double, 1e300);
TEST(float, -FLT_MAX, double, -1e300);
TEST(float, FLT_MIN, double, 1e-300);
TEST(float, -FLT_MIN, double, -1e-300);
xfloat = ::epics::pvData::castUnsafe<float,double>(epicsNAN);
testOk(isnan( xfloat ), "Test cast double NAN to float NAN yields: %f", xfloat);
{
string result[3];
const int32_t in[3] = { 1234, 506001, 42424242 };
testDiag("Test vcast int32 -> string");
epics::pvData::castUnsafeV(3, epics::pvData::pvString, (void*)result,
epics::pvData::pvInt, (void*)in);
testDiag("Yields %s %s %s", result[0].c_str(), result[1].c_str(), result[2].c_str());
testOk1(result[0]=="1234");
testOk1(result[1]=="506001");
testOk1(result[2]=="42424242");
}
} catch(std::exception& e) {
testAbort("Uncaught exception: %s", e.what());
}
return testDone();
}
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