tests: make tests with temporary environment setting portable With "dash" (as "/bin/sh" on Debian GNU/Linux), command execution in "ENV=val foo bar" style doesn't work as expect in test script files, if "foo" is user-defined function: it works fine, if "foo" is existing commands like "hg". 09049042ab99 introduced tests for HGPLAIN and HGPLAINEXCEPT into test-revset.t, and all of them are in such style. This patch doesn't: - add explicit unsetting for HGPLAIN and HGPLAINEXCEPT they are already introduced by 09049042ab99 - write assignment and exporting in one line "ENV=val; export ENV" for two or more environment variables in one line causes failure of test-check-code-hg.t: it is recognized as "don't export and assign at once" unfortunately.

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import unittest, sys, os

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def main(modulename):

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    '''run the tests found in module, printing nothing when all tests pass'''

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    module = sys.modules[modulename]

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    suite = unittest.defaultTestLoader.loadTestsFromModule(module)

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    results = unittest.TestResult()

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    suite.run(results)

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    if results.errors or results.failures:

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        for tc, exc in results.errors:

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            print 'ERROR:', tc

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            print

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            sys.stdout.write(exc)

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        for tc, exc in results.failures:

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            print 'FAIL:', tc

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            print

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            sys.stdout.write(exc)

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        sys.exit(1)

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if os.environ.get('SILENT_BE_NOISY'):

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    main = unittest.main