def run_test():
"""
Test class Barcharts: Basic bar chart, Grouped bar chart, Stacked bar chart.
:return: No return.
"""
# Basic bar chart
# a = BarChart([3, 5, 9, 2, 6, 15], ['python', 'js', 'java', 'C', 'C++', 'Css'], 'Programming language usage', 'vertical')
# a.basic_bar_chart('Usage')
# plt.show()
# Grouped bar chart
list_x = [[23, 5, 13, 4, 20, 40], [3, 5, 9, 2, 6, 15],
[20, 19, 35, 27, 16, 15]]
c = BarChart(list_x, ['a', 'b', 'c', 'd', 'e', 'f'], 'test', 'vertical')
c.multi_bar(['var1', 'var2', 'var3'], 'objects_test')
plt.show()
