python: Add script to reproduce the bug fixed in PR #30.

Author: knarfS

smuscript/test_pr30.py

@@ -0,0 +1,52 @@
+# This file is part of the SmuView project.
+#
+# Copyright (C) 2021 Frank Stettner <frank-stettner@gmx.net>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+#
+# Test script to reproduce the bug fixed in PR #30
+#
+
+import smuview
+import time
+
+# Add user device and 2 channels.
+user_device = Session.add_user_device()
+ch1 = user_device.add_user_channel("CH1", "")
+ch2 = user_device.add_user_channel("CH2", "")
+
+start_ts = time.time()
+
+# Push initial sample data.
+ch1.push_sample(1, start_ts+1, smuview.Quantity.Voltage, set(), smuview.Unit.Volt, 4, 2)
+ch1.push_sample(2, start_ts+3, smuview.Quantity.Voltage, set(), smuview.Unit.Volt, 4, 2)
+ch1.push_sample(3, start_ts+5, smuview.Quantity.Voltage, set(), smuview.Unit.Volt, 4, 2)
+ch1.push_sample(4, start_ts+7, smuview.Quantity.Voltage, set(), smuview.Unit.Volt, 4, 2)
+ch2.push_sample(10, start_ts+8, smuview.Quantity.Voltage, set(), smuview.Unit.Volt, 4, 2)
+
+# Add a xy-plot to get AnalogTimeSignal::combine_signals() called and force the error.
+# Without the fix from PR #30 SmuView will get stuck in an infinite loop!
+tab = UiProxy.add_device_tab(user_device)
+plot = UiProxy.add_xy_plot_view(tab, smuview.DockArea.TopDockArea)
+curve = UiProxy.add_curve_to_xy_plot_view(tab, plot, ch1.actual_signal(), ch2.actual_signal())
+
+# Push more data.
+ch1.push_sample(5, start_ts+9, smuview.Quantity.Voltage, set(), smuview.Unit.Volt, 4, 2)
+ch2.push_sample(9, start_ts+10, smuview.Quantity.Voltage, set(), smuview.Unit.Volt, 4, 2)