From 9b205b5a27b7775ef990e329749c241a1b598a24 Mon Sep 17 00:00:00 2001
From: Joseph Weston <joseph.weston08@gmail.com>
Date: Mon, 20 Nov 2017 12:47:08 +0100
Subject: [PATCH] add test that defines failure modes of HoppingKinds
---
kwant/tests/test_builder.py | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/kwant/tests/test_builder.py b/kwant/tests/test_builder.py
index bc61f971..84d2e671 100644
--- a/kwant/tests/test_builder.py
+++ b/kwant/tests/test_builder.py
@@ -1021,6 +1021,21 @@ def test_HoppingKind():
assert len({hk: 0, hk2:1, hk3: 2}) == 2
+def test_invalid_HoppingKind():
+ g = kwant.lattice.general(ta.identity(3))
+ h = kwant.lattice.general(np.identity(3)[:-1]) # 2D lattice in 3D
+
+ delta = (1, 0, 0)
+
+ # families have incompatible tags
+ with raises(ValueError):
+ builder.HoppingKind(delta, g, h)
+
+ # delta is incompatible with tags
+ with raises(ValueError):
+ builder.HoppingKind(delta, h)
+
+
def test_ModesLead_and_SelfEnergyLead():
lat = builder.SimpleSiteFamily()
hoppings = [builder.HoppingKind((1, 0), lat),
--
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