diff --git a/tests/shapesimilarity/__init__.py b/tests/shapesimilarity/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/shapesimilarity/test_shape_similarity.py b/tests/shapesimilarity/test_shape_similarity.py
new file mode 100644
index 0000000..35f7463
--- /dev/null
+++ b/tests/shapesimilarity/test_shape_similarity.py
@@ -0,0 +1,18 @@
+from shapesimilarity import shape_similarity
+import unittest
+
+class TestShapeSimilarity(unittest.TestCase):
+  def test_returns_close_to_1_if_curves_have_similar_shapes(self):
+    curve1 = [[0, 0], [2, 4], [18, -3]]
+    curve2 = [[0.3, -0.2], [2.2, 4.5], [16, -4]]
+    self.assertEqual(shape_similarity(curve1, curve2), 0.9127)
+
+  def test_returns_low_numbers_for_curves_with_dissimilar_shapes(self):
+    curve1 = [[0, 0], [2, 4], [4, 0], [0, 0]]
+    curve2 = [[0, 0], [2, 2], [2, 2], [1, 1]]
+    self.assertEqual(shape_similarity(curve1, curve2), 0.4792)
+
+  def test_should_be_really_close_to_0_for_very_dissimilar_shapes(self):
+    curve1 = [[0, 0], [0.1, 0.1], [0.1, 0.1], [1, 1]]
+    curve2 = [[7, 7], [4, 4], [4, 4], [5, 5]]
+    self.assertEqual(shape_similarity(curve1, curve2), 0)
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