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2022-10-20 20:29:11 +08:00
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test_suite/unit_tests/Input/test_hidinput.cxx Normal file
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// Written by James Turner, started 2017.
//
// Copyright (C) 2017 James Turner
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#include "config.h"
#include "test_hidinput.hxx"
#include "test_suite/FGTestApi/testGlobals.hxx"
#include <simgear/misc/test_macros.hxx>
#include <Input/FGHIDEventInput.hxx>
void HIDInputTests::testValueExtract()
{
uint8_t testDataFromSpec[4] = {0, 0xf4, 0x1 | (0x7 << 2), 0x03};
CPPUNIT_ASSERT(extractBits(testDataFromSpec, 4, 8, 10) == 500);
CPPUNIT_ASSERT(extractBits(testDataFromSpec, 4, 18, 10) == 199);
uint8_t testData2[4] = {0x01 << 6 | 0x0f,
0x17 | (1 << 6),
0x3 | (0x11 << 2),
0x3d | (1 << 6) };
CPPUNIT_ASSERT(extractBits(testData2, 4, 0, 6) == 15);
CPPUNIT_ASSERT(extractBits(testData2, 4, 6, 12) == 3421);
CPPUNIT_ASSERT(extractBits(testData2, 4, 18, 12) == 3921);
CPPUNIT_ASSERT(extractBits(testData2, 4, 30, 1) == 1);
CPPUNIT_ASSERT(extractBits(testData2, 4, 31, 1) == 0);
}
// void writeBits(uint8_t* bytes, size_t bitOffset, size_t bitSize, int value)
void HIDInputTests::testValueInsert()
{
uint8_t buf[8];
memset(buf, 0, 8);
int a = 3421;
int b = 3921;
writeBits(buf, 6, 12, a);
writeBits(buf, 18, 12, b);
CPPUNIT_ASSERT(buf[0] == 0x40);
CPPUNIT_ASSERT(buf[1] == 0x57);
CPPUNIT_ASSERT(buf[2] == (0x03 | 0x44));
CPPUNIT_ASSERT(buf[3] == 0x3d);
}
void HIDInputTests::testSignExtension()
{
CPPUNIT_ASSERT(signExtend(0x80, 8) == -128);
CPPUNIT_ASSERT(signExtend(0xff, 8) == -1);
CPPUNIT_ASSERT(signExtend(0x7f, 8) == 127);
CPPUNIT_ASSERT(signExtend(0x831, 12) == -1999);
CPPUNIT_ASSERT(signExtend(0x7dd, 12) == 2013);
}