[Python编程(第4版)].(Programming.Python.4th.Edition).Mark.Lutz.文字版

8 tests were run, 4 tests failed.

C:\...\PP4E\System\Tester> type Outputs\test-basic-stdout.out.bad

begin

Spam!

Spam!Spam!

Spam!Spam!Spam!

Spam!Spam!Spam!Spam!

end

One last usage note: if you change the trace variable in this script to be verbose, you’ll
get much more output designed to help you trace the programs operation (but probably
too much for real testing runs):

C:\...\PP4E\System\Tester> tester.py

Start tester: Mon Feb 22 22:34:51 2010

in C:\Users\mark\Stuff\Books\4E\PP4E\dev\Examples\PP4E\System\Tester

--------------------------------------------------------------------------------

C:\Users\mark\Stuff\Books\4E\PP4E\dev\Examples\PP4E\System\Tester

.\Scripts\test-basic-args.py

.\Scripts\test-basic-stdout.py

.\Scripts\test-basic-streams.py

.\Scripts\test-basic-this.py

.\Scripts\test-errors-runtime.py

.\Scripts\test-errors-syntax.py

.\Scripts\test-status-bad.py

.\Scripts\test-status-good.py

--------------------------------------------------------------------------------

C:\Python31\python.exe .\Scripts\test-basic-args.py -command -line --stuff

b'Eggs\r\n10\r\n'

--------------------------------------------------------------------------------

b'C:\\Users\\mark\\Stuff\\Books\\4E\\PP4E\\dev\\Examples\\PP4E\\System\\Tester\r

\nC:\\Users\\mark\\Stuff\\Books\\4E\\PP4E\\dev\\Examples\\PP4E\\System\\Tester\\

Scripts\r\n[argv]\r\n.\\Scripts\\test-basic-args.py\r\n-command\r\n-line\r\n--st

uff\r\n[interaction]\r\nEnter text:EggsEggsEggsEggsEggsEggsEggsEggsEggsEggs'

b''

0

passed: test-basic-args.py

...more lines deleted...

Study the test driver’s code for more details. Naturally, there is much more to the
general testing story than we have space for here. For example, in-process tests don’t
need to spawn programs and can generally make do with importing modules and testing
them in try exception handler statements. There is also ample room for expansion and
customization in our testing script (see its docstring for starters). Moreover, Python
comes with two testing frameworks, doctest and unittest (a.k.a. PyUnit), which pro-
vide techniques and structures for coding regression and unit tests:

unittest
An object-oriented framework that specifies test cases, expected results, and test
suites. Subclasses provide test methods and use inherited assertion calls to specify
expected results.

A Regression Test Script | 303