add assert for emd dimension mismatch

1 files changed, 16 insertions, 0 deletions

diff --git a/test/test_ot.py b/test/test_ot.py
index dacae0a..1343604 100644
--- a/test/test_ot.py
+++ b/test/test_ot.py
@@ -14,6 +14,22 @@ from ot.datasets import make_1D_gauss as gauss
 import pytest
 
 
+def test_emd_dimension_mismatch():
+    # test emd and emd2 for simple identity
+    n_samples = 100
+    n_features = 2
+    rng = np.random.RandomState(0)
+
+    x = rng.randn(n_samples, n_features)
+    a = ot.utils.unif(n_samples + 1)
+
+    M = ot.dist(x, x)
+
+    np.testing.assert_raises(AssertionError, emd, a, a, M)
+
+    np.testing.assert_raises(AssertionError, emd2, a, a, M)
+
+
 def test_emd_emd2():
     # test emd and emd2 for simple identity
     n = 100