import name     # The module we want to test
import testcase # Includes the tests

# First test case
result = name.last_name_first('Katherine Johnson')
testcase.assert_equals('Johnson, Katherine', result)

# Second test case
result = name.last_name_first('Katherine      Johnson')
testcase.assert_equals('Johnson, Katherine', result)

print('All tests of the function last_name_first passed')