diff --git a/tests.py b/tests.py
new file mode 100644
index 0000000..a17d124
--- /dev/null
+++ b/tests.py
@@ -0,0 +1,14 @@
+from merge import interpolate
+
+if __name__ == '__main__':
+    assert (
+            interpolate(8.483327468402893, 1.0986714742080539, 6.62638e+23, 0.9134265730409874)
+            ==
+            (0.9062304332086728, 1.0022162946282032)
+    )
+    print(interpolate(10, 2, 5.8666e+23, 1.0))
+    assert (
+            interpolate(1.5159765323825003, 1, 5.8666e+23, 1.0)
+            ==
+            (0.5355362926702285, 0.7751899699855702)
+    )