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10279c0178
The existing implementation that was ported over was trying to work with different values. By writing a unit test for the code that stores values in GPS_coord it was possible to have known values which could then also be used to write a unit test for the HoTT telemetry which finally enabled production code to be written. Hopefully it will work, unable to test further since my GPS unit is playing up.
52 lines
1.4 KiB
C++
52 lines
1.4 KiB
C++
#include <stdint.h>
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#include <limits.h>
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#include "gps_conversion.h"
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#include "unittest_macros.h"
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#include "gtest/gtest.h"
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// See http://en.wikipedia.org/wiki/Geographic_coordinate_conversion
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TEST(GpsConversionTest, GPSCoordToDegrees_BadString)
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{
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// expect
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uint32_t result = GPS_coord_to_degrees("diediedie");
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EXPECT_EQ(result, 0);
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}
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typedef struct gpsConversionExpectation_s {
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char *coord;
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uint32_t degrees;
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} gpsConversionExpectation_t;
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TEST(GpsConversionTest, GPSCoordToDegrees_NMEA_Values)
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{
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gpsConversionExpectation_t gpsConversionExpectations[] = {
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{"0.0", 0},
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{"000.0", 0},
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{"00000.0000", 0},
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{"0.0001", 16}, // smallest value
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{"25599.9999", 2566666650UL}, // largest value
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{"25599.99999", 2566666650UL}, // too many fractional digits
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{"25699.9999", 16666650UL}, // overflowed without detection
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{"5128.3727", 514728783UL},
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{"5321.6802", 533613366UL},
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{"00630.3372", 65056200UL},
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};
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// expect
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uint8_t testIterationCount = sizeof(gpsConversionExpectations) / sizeof(gpsConversionExpectation_t);
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// expect
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for (uint8_t index = 0; index < testIterationCount; index ++) {
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gpsConversionExpectation_t *expectation = &gpsConversionExpectations[index];
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printf("iteration: %d\n", index);
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uint32_t result = GPS_coord_to_degrees(expectation->coord);
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EXPECT_EQ(result, expectation->degrees);
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}
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}
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