From f1aa5a26a29bc5a6544285e86cbd767ef9793f4b Mon Sep 17 00:00:00 2001
From: Lukas Prediger <lukas.prediger@rwth-aachen.de>
Date: Wed, 30 May 2018 11:50:59 +0200
Subject: [PATCH] test_plot_empty_pulse now employs non-interactive/displayless
 matplotlib backend to avoid failing on Travis CI.

---
 tests/pulses/plotting_tests.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tests/pulses/plotting_tests.py b/tests/pulses/plotting_tests.py
index a07c6b30d..e338add01 100644
--- a/tests/pulses/plotting_tests.py
+++ b/tests/pulses/plotting_tests.py
@@ -228,6 +228,9 @@ def integrated_test_with_sequencer_and_pulse_templates(self) -> None:
         self.assertEqual(expected_voltages, voltages)
 
     def test_plot_empty_pulse(self) -> None:
+        import matplotlib
+        matplotlib.use('svg') # use non-interactive backend so that test does not fail on travis
+
         pt = DummyPulseTemplate()
         with warnings.catch_warnings(record=True) as w:
             plot(pt, dict(), show=False)