1 files changed, 53 insertions, 0 deletions
diff --git a/geometry/geometry_tests/diamond_box_tests.cpp b/geometry/geometry_tests/diamond_box_tests.cpp
new file mode 100644
index 0000000000..a3ed68f0e4
--- /dev/null
+++ b/geometry/geometry_tests/diamond_box_tests.cpp
@@ -0,0 +1,53 @@
+#include "testing/testing.hpp"
+
+#include "geometry/diamond_box.hpp"
+#include "geometry/point2d.hpp"
+
+using namespace m2;
+
+namespace
+{
+UNIT_TEST(DiamondBox_Smoke)
+{
+  {
+    DiamondBox dbox;
+    TEST(!dbox.HasPoint(0, 0), ());
+  }
+
+  {
+    DiamondBox dbox;
+    dbox.Add(0, 0);
+    TEST(dbox.HasPoint(0, 0), ());
+    TEST(!dbox.HasPoint(0, 1), ());
+    TEST(!dbox.HasPoint(1, 0), ());
+    TEST(!dbox.HasPoint(1, 1), ());
+    TEST(!dbox.HasPoint(0.5, 0.5), ());
+
+    dbox.Add(1, 1);
+    TEST(dbox.HasPoint(0, 0), ());
+    TEST(dbox.HasPoint(1, 1), ());
+    TEST(dbox.HasPoint(0.5, 0.5), ());
+    TEST(!dbox.HasPoint(1, 0), ());
+    TEST(!dbox.HasPoint(0, 1), ());
+  }
+
+  {
+    DiamondBox dbox;
+
+    dbox.Add(0, 1);
+    dbox.Add(0, -1);
+    dbox.Add(-1, 0);
+    dbox.Add(1, 0);
+    TEST(dbox.HasPoint(0, 0), ());
+    TEST(dbox.HasPoint(0.5, 0.5), ());
+    TEST(dbox.HasPoint(0.5, -0.5), ());
+    TEST(dbox.HasPoint(-0.5, 0.5), ());
+    TEST(dbox.HasPoint(-0.5, -0.5), ());
+
+    TEST(!dbox.HasPoint(0.51, 0.51), ());
+    TEST(!dbox.HasPoint(0.51, -0.51), ());
+    TEST(!dbox.HasPoint(-0.51, 0.51), ());
+    TEST(!dbox.HasPoint(-0.51, -0.51), ());
+  }
+}
+}  // namespace