pytest: run unit tests from all python files

run_tests.sh

@@ -8,7 +8,7 @@ set -e
 
 if [ "$(which pytest)" ]; then
   echo run unit tests...
-  pytest src/*
+  pytest $(find src/ -name *.py)
 else
   echo "pytest not found, skipping unit tests"
 fi

src/lctime/liberty/visualize.py

@@ -114,7 +114,7 @@ def plot_timing_ndlm(library: Group, table: Group):
     plot3d(x_axis, y_axis, z_data, x_label=x_label, y_label=y_label, z_label=z_label)
 
 
-def test_plot_nldm():
+def _test_plot_nldm():
     import os.path
     lib_file = os.path.join(os.path.dirname(__file__), '../../test_data/freepdk45/gscl45nm.lib')
 

src/lctime/logic/cmos_sim.py

@@ -11,7 +11,7 @@ from enum import Enum
 import sympy
 from sympy.logic import SOPform
 
-from lccommon.data_types import ChannelType
+from ..lccommon.data_types import ChannelType
 
 
 class Signal(Enum):