triangle triangle adjacency unit test

include/igl/triangle_triangle_adjacency.cpp

@@ -0,0 +1,44 @@
+
+#include <test_common.h>
+#include <igl/triangle_triangle_adjacency.h>
+#include <Eigen/Geometry>
+
+class triangle_triangle_adjacency : public ::testing::TestWithParam<std::string> {};
+
+TEST_P(triangle_triangle_adjacency, dot)
+{
+  Eigen::MatrixXd V;
+  Eigen::MatrixXi F,TT,TTi;
+  // Load example mesh: GetParam() will be name of mesh file
+  test_common::load_mesh(GetParam(), V, F);
+  igl::triangle_triangle_adjacency(F,TT,TTi);
+  ASSERT_EQ(F.rows(),TT.rows());
+  ASSERT_EQ(F.rows(),TTi.rows());
+  ASSERT_EQ(F.cols(),TT.cols());
+  ASSERT_EQ(F.cols(),TTi.cols());
+  for(int f = 0;f<F.rows();f++)
+  {
+    for(int c = 0;c<3;c++)
+    {
+      if(TT(f,c) >= 0)
+      {
+        ASSERT_LT(TT(f,c) , F.rows());
+        ASSERT_GE(TTi(f,c) , 0);
+        ASSERT_LT(TTi(f,c) , 3);
+        ASSERT_EQ( TT(TT(f,c),TTi(f,c)) , f);
+      }
+    }
+  }
+  // ASSERT_EQ(a,b);
+  // ASSERT_TRUE(a==b);
+  // ASSERT_NEAR(a,b,1e-15)
+  // ASSERT_LT(a,1e-12);
+}
+
+INSTANTIATE_TEST_CASE_P
+(
+  manifold_meshes,
+  triangle_triangle_adjacency,
+  ::testing::ValuesIn(test_common::manifold_meshes()),
+  test_common::string_test_name
+);