src/test/unit/olc_unittest.cc

   1 #include <string>
   2
   3 extern "C" {
   4 #include "common/olc.h"
   5 #include "common/utils.h"
   6 }
   7
   8 #include "gtest/gtest.h"
   9
  10 using std::string;
  11
  12 struct EncodeCase {
  13     string result;
  14     double lat;
  15     double lon;
  16
  17     int length();
  18 };
  19
  20 int EncodeCase::length()
  21 {
  22     int n = 0;
  23     for (size_t ii = 0; ii < this->result.length(); ii++) {
  24         if (result[ii] == '0') {
  25             break;
  26         }
  27         if (result[ii] != '+') {
  28             n++;
  29         }
  30     }
  31     return n;
  32 }
  33
  34 // Tests cases from https://github.com/google/open-location-code/blob/master/test_data/encodingTests.csv
  35 struct EncodeCase encodeCases[] = {
  36     {"7FG49Q00+",       20.375, 2.775},
  37     {"7FG49QCJ+2V",     20.3700625, 2.7821875},
  38     {"7FG49QCJ+2VX",    20.3701125, 2.782234375},
  39     {"7FG49QCJ+2VXGJ",  20.3701135, 2.78223535156},
  40     {"8FVC2222+22",     47.0000625, 8.0000625},
  41     {"4VCPPQGP+Q9",     -41.2730625, 174.7859375},
  42     {"62G20000+",       0.5, -179.5},
  43     {"22220000+",       -89.5, -179.5},
  44     {"7FG40000+",       20.5, 2.5},
  45     {"22222222+22",     -89.9999375, -179.9999375},
  46     {"6VGX0000+",       0.5, 179.5},
  47     {"6FH32222+222",    1, 1},
  48     // Special cases over 90 latitude and 180 longitude
  49     {"CFX30000+",       90, 1},
  50     {"CFX30000+",       92, 1},
  51     {"62H20000+",       1, 180},
  52     {"62H30000+",       1, 181},
  53     {"CFX3X2X2+X2",     90, 1},
  54     // Test non-precise latitude/longitude value
  55     {"6FH56C22+22",     1.2, 3.4},
  56 };
  57
  58 TEST(OLCTest, TestEncode)
  59 {
  60     char buf[20];
  61
  62     for (unsigned ii = 0; ii < ARRAYLEN(encodeCases); ii++) {
  63         struct EncodeCase c = encodeCases[ii];
  64         int32_t lat = c.lat * OLC_DEG_MULTIPLIER;
  65         int32_t lon = c.lon * OLC_DEG_MULTIPLIER;
  66         EXPECT_GT(olc_encode(lat, lon, c.length(), buf, sizeof(buf)), 0);
  67         EXPECT_EQ(c.result, (string)buf);
  68     }
  69 }