Add fuzzer discovered tests for polygonToCells

Author: isaacbrodsky

CHANGELOG.md

@@ -16,6 +16,7 @@ The public API of this library consists of the functions declared in file
 ### Changed
 - `assert` on defensive code blocks that are not already covered. (#720)
 - `clang-format` upgraded to version 11. (#734)
+- Increased test coverage using fuzzer-discovered cases. (#742)
 
 ## [4.0.1] - 2022-09-15
 ### Fixed

CMakeLists.txt

@@ -189,6 +189,7 @@ set(OTHER_SOURCE_FILES
     src/apps/testapps/testVertexGraph.c
     src/apps/testapps/testCompactCells.c
     src/apps/testapps/testPolygonToCells.c
+    src/apps/testapps/testPolygonToCellsErrors.c
     src/apps/testapps/testPolygonToCellsReported.c
     src/apps/testapps/testPentagonIndexes.c
     src/apps/testapps/testGridDisk.c

CMakeTests.cmake

@@ -184,6 +184,7 @@ add_h3_test(testCellsToLinkedMultiPolygon src/apps/testapps/testCellsToLinkedMul
 add_h3_test(testH3SetToVertexGraph src/apps/testapps/testH3SetToVertexGraph.c)
 add_h3_test(testLinkedGeo src/apps/testapps/testLinkedGeo.c)
 add_h3_test(testPolygonToCells src/apps/testapps/testPolygonToCells.c)
+add_h3_test(testPolygonToCellsErrors src/apps/testapps/testPolygonToCellsErrors.c)
 add_h3_test(testPolygonToCellsReported src/apps/testapps/testPolygonToCellsReported.c)
 add_h3_test(testVertexGraph src/apps/testapps/testVertexGraph.c)
 add_h3_test(testDirectedEdge src/apps/testapps/testDirectedEdge.c)