1 files changed, 21 insertions, 0 deletions

diff --git a/test/common/geom.c b/test/common/geom.c
new file mode 100644
index 0000000..f05e0a1
--- /dev/null
+++ b/test/common/geom.c
@@ -0,0 +1,21 @@
+#include "common/geom.h"
+#include <assert.h>
+
+static void test_square_area() {
+  assert(square_area(v(0, 0), v(10, 0), v(10, 10)) == 100);
+  assert(square_area(v(0, 0), v(0, 10), v(10, 10)) == -100);
+}
+
+static void test_cartesian_barycentric_vectors() {
+  Triangle t = {{v(0, 0), v(10, 0), v(10, 10)}};
+  CartesianVector c = v(3, 2);
+  BarycentricVector bv = cartesian_to_barycentric(t, c);
+  assert(barycentric_vector_equals(bv, b(0.7, 0.1)));
+  assert(vector_equals(barycentric_to_cartesian(t, bv), c));
+}
+
+int main(int argc, char **argv) {
+  test_square_area();
+  test_cartesian_barycentric_vectors();
+  return 0;
+}