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SGBucket unit-testing

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- test polar wrapping near the 180-meridian
- test corner points for polar tiles
- expand test-macro helpers slightly
This commit is contained in:
James Turner 2014-02-12 16:21:16 +00:00
parent 9a09a6a447
commit 748b13850a
2 changed files with 83 additions and 27 deletions
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87
simgear/bucket/test_bucket.cxx
View File

@ -43,6 +43,32 @@ void testBucketSpans()
COMPARE(sg_bucket_span(-89.9), 12.0);
}
void testBasic()
{
SGBucket b1(5.1, 55.05);
COMPARE(b1.get_chunk_lon(), 5);
COMPARE(b1.get_chunk_lat(), 55);
COMPARE(b1.get_x(), 0);
COMPARE(b1.get_y(), 0);
COMPARE(b1.gen_index(), 3040320);
COMPARE(b1.gen_base_path(), "e000n50/e005n55");
SGBucket b2(-10.1, -43.8);
COMPARE(b2.get_chunk_lon(), -11);
COMPARE(b2.get_chunk_lat(), -44);
COMPARE(b2.get_x(), 3);
COMPARE(b2.get_y(), 1); // latitude chunks numbered bottom to top, it seems
COMPARE(b2.gen_base_path(), "w020s50/w011s44");
SGBucket b3(123.48, 9.01);
COMPARE(b3.get_chunk_lon(), 123);
COMPARE(b3.get_chunk_lat(), 9);
COMPARE(b3.get_x(), 3);
COMPARE(b3.get_y(), 0);
COMPARE(b3.gen_base_path(), "e120n00/e123n09");
}
void testPolar()
{
SGBucket b1(0.0, 89.92);
@ -54,6 +80,13 @@ void testPolar()
COMPARE(b1.gen_index(), b2.gen_index());
SGGeod actualNorthPole1 = b1.get_corner(2);
SGGeod actualNorthPole2 = b1.get_corner(3);
COMPARE_EP(actualNorthPole1.getLatitudeDeg(), 90.0);
COMPARE_EP(actualNorthPole1.getLongitudeDeg(), 12.0);
COMPARE_EP(actualNorthPole2.getLatitudeDeg(), 90.0);
COMPARE_EP(actualNorthPole2.getLongitudeDeg(), 0.0);
SGBucket b3(-2, 89.88);
SGBucket b4(-7, 89.88);
COMPARE(b3.gen_index(), b4.gen_index());
@ -68,6 +101,13 @@ void testPolar()
COMPARE(b5.get_y(), 0);
COMPARE(b5.gen_index(), b6.gen_index());
SGGeod actualSouthPole1 = b5.get_corner(0);
SGGeod actualSouthPole2 = b5.get_corner(1);
COMPARE_EP(actualSouthPole1.getLatitudeDeg(), -90.0);
COMPARE_EP(actualSouthPole1.getLongitudeDeg(), -180);
COMPARE_EP(actualSouthPole2.getLatitudeDeg(), -90.0);
COMPARE_EP(actualSouthPole2.getLongitudeDeg(), -168);
// no automatic wrapping of these values occurs
SGBucket b7(200, 89.88);
COMPARE(b7.get_chunk_lon(), 192);
@ -82,13 +122,11 @@ void testNearPolar()
COMPARE(b1.get_chunk_lon(), 0);
COMPARE(b1.get_chunk_lat(), 88);
VERIFY(b1.gen_index() != b2.gen_index());
SGBucket b3(176.1, 88.5);
COMPARE(b3.get_chunk_lon(), 176);
SGBucket b4(-178, 88.5);
// the fix for the polar cap issue, causes this to report -180,
// not -184
COMPARE(b4.get_chunk_lon(), -180);
}
@ -140,6 +178,26 @@ void testPolarOffset()
COMPARE(b2.gen_index(), sgBucketOffset(-11.7, -89.6, -2, 0));
// offset and wrap
SGBucket b3(-170, 89.1);
SGBucket b4(b3.sibling(-1, 0));
COMPARE(b4.get_chunk_lat(), 89);
COMPARE(b4.get_chunk_lon(), 168);
COMPARE(b4.get_x(), 0);
COMPARE(b4.get_y(), 0);
COMPARE(b4.gen_index(), sgBucketOffset(-170, 89.1, -1, 0));
SGBucket b5(177, 87.3);
SGBucket b6(b5.sibling(1, 1));
COMPARE(b6.get_chunk_lat(), 87);
COMPARE(b6.get_chunk_lon(), -180);
COMPARE(b6.get_x(), 0);
COMPARE(b6.get_y(), 3);
COMPARE(b6.gen_index(), sgBucketOffset(177, 87.3, 1, 1));
#if 0
// offset vertically towards the pole
SGBucket b3(b1.sibling(0, -5));
@ -176,28 +234,7 @@ int main(int argc, char* argv[])
{
testBucketSpans();
SGBucket b1(5.1, 55.05);
COMPARE(b1.get_chunk_lon(), 5);
COMPARE(b1.get_chunk_lat(), 55);
COMPARE(b1.get_x(), 0);
COMPARE(b1.get_y(), 0);
COMPARE(b1.gen_index(), 3040320);
COMPARE(b1.gen_base_path(), "e000n50/e005n55");
SGBucket b2(-10.1, -43.8);
COMPARE(b2.get_chunk_lon(), -11);
COMPARE(b2.get_chunk_lat(), -44);
COMPARE(b2.get_x(), 3);
COMPARE(b2.get_y(), 1); // latitude chunks numbered bottom to top, it seems
COMPARE(b2.gen_base_path(), "w020s50/w011s44");
SGBucket b3(123.48, 9.01);
COMPARE(b3.get_chunk_lon(), 123);
COMPARE(b3.get_chunk_lat(), 9);
COMPARE(b3.get_x(), 3);
COMPARE(b3.get_y(), 0);
COMPARE(b3.gen_base_path(), "e120n00/e123n09");
testBasic();
testPolar();
testNearPolar();
testOffset();

23
simgear/misc/test_macros.hxx
View File

@ -2,18 +2,37 @@
#ifndef SG_MISC_TEST_MACROS_HXX
#define SG_MISC_TEST_MACROS_HXX
#include <cmath> // for fabs()
#define COMPARE(a, b) \
if ((a) != (b)) { \
std::cerr << "failed:" << #a << " != " << #b << std::endl; \
std::cerr << "\tgot:'" << a << "'" << std::endl; \
std::cerr << "\tat:" << __FILE__ << ":" << __LINE__ << std::endl; \
exit(1); \
}
#define VERIFY(a) \
if (!(a)) { \
std::cerr << "failed:" << #a << std::endl; \
std::cerr << "\tat:" << __FILE__ << ":" << __LINE__ << std::endl; \
exit(1); \
}
#define COMPARE_EP(a, b) \
if (fabs(a - b) > SG_EPSILON) { \
std::cerr << "failed with epsilon:" << #a << " != " << #b << std::endl; \
std::cerr << "\tgot:'" << a << "'" << std::endl; \
std::cerr << "\tat:" << __FILE__ << ":" << __LINE__ << std::endl; \
exit(1); \
}
#define COMPARE_EP2(a, b, ep) \
if (fabs(a - b) > ep) { \
std::cerr << "failed with epsilon:" << #a << " != " << #b << std::endl; \
std::cerr << "\tgot:'" << a << "'" << std::endl; \
std::cerr << "\tat:" << __FILE__ << ":" << __LINE__ << std::endl; \
exit(1); \
}
#endif // of SG_MISC_TEST_MACROS_HXX