src/test/unit/gps_conversion_unittest.cc

   1 /*
   2  * This file is part of Cleanflight.
   3  *
   4  * Cleanflight is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * Cleanflight is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with Cleanflight.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include <stdint.h>
  19
  20 #include <limits.h>
  21
  22 //#ifdef DEBUG_GPS_CONVERSION
  23
  24 extern "C" {
  25     #include "common/gps_conversion.h"
  26 }
  27
  28 #include "unittest_macros.h"
  29 #include "gtest/gtest.h"
  30
  31 // See http://en.wikipedia.org/wiki/Geographic_coordinate_conversion
  32
  33 TEST(GpsConversionTest, GPSCoordToDegrees_BadString)
  34 {
  35     // expect
  36     uint32_t result = GPS_coord_to_degrees("diediedie");
  37     EXPECT_EQ(result, 0);
  38 }
  39
  40 typedef struct gpsConversionExpectation_s {
  41     const char *coord;
  42     uint32_t degrees;
  43 } gpsConversionExpectation_t;
  44
  45 TEST(GpsConversionTest, GPSCoordToDegrees_NMEA_Values)
  46 {
  47     const gpsConversionExpectation_t gpsConversionExpectations[] = {
  48         {"0.0", 0},
  49         {"000.0", 0},
  50         {"00000.0000", 0},
  51         {"0.0001", 16}, // smallest value
  52         {"25599.9999", 2566666650UL}, // largest value
  53         {"25599.99999", 2566666650UL}, // too many fractional digits
  54         {"25699.9999", 16666650UL}, // overflowed without detection
  55         {"5128.3727", 514728783UL},
  56         {"5321.6802", 533613366UL},
  57         {"00630.3372", 65056200UL},
  58     };
  59
  60     // expect
  61
  62     uint8_t testIterationCount = sizeof(gpsConversionExpectations) / sizeof(gpsConversionExpectation_t);
  63
  64     // expect
  65
  66     for (uint8_t index = 0; index < testIterationCount; index ++) {
  67         const gpsConversionExpectation_t *expectation = &gpsConversionExpectations[index];
  68 #ifdef DEBUG_GPS_CONVERSION
  69         printf("iteration: %d\n", index);
  70 #endif
  71         uint32_t result = GPS_coord_to_degrees(expectation->coord);
  72         EXPECT_EQ(result, expectation->degrees);
  73     }
  74 }