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Current File : //usr/lib/python3/dist-packages/nose2/tests/functional/test_prettyassert.py

from nose2.tests._common import FunctionalTestCase


class TestPrettyAsserts(FunctionalTestCase):
    def assertProcOutputPattern(self, proc, expected, assert_exit_status=1):
        """
        - proc: a popen proc to check output on
        - expected: expected output pattern
        """
        stdout, stderr = proc.communicate()

        if assert_exit_status is not None:
            self.assertEqual(assert_exit_status, proc.poll())

        self.assertTestRunOutputMatches(
            proc, stderr=expected)

        return stderr

    def test_simple_global(self):
        proc = self.runIn(
            'scenario/pretty_asserts/simple_global',
            '-v', '--pretty-assert',
        )
        expected = "\n".join([
            ">>> assert myglob == 2",
            "",
            "values:",
            "    myglob = 1",
            ""
        ])
        self.assertProcOutputPattern(proc, expected)

    def test_conf_on(self):
        proc = self.runIn(
            'scenario/pretty_asserts/conf_on',
            '-v',
        )
        expected = "\n".join([
            ">>> assert myglob == 2",
            "",
            "values:",
            "    myglob = 1",
            ""
        ])
        self.assertProcOutputPattern(proc, expected)

    def test_conf_on_suppresses_clihelp(self):
        proc = self.runIn(
            'scenario/pretty_asserts/conf_on',
            '--help',
        )
        stdout, stderr = proc.communicate()
        exit_status = proc.poll()
        assert '--pretty-assert' not in stdout
        assert '--pretty-assert' not in stderr
        assert exit_status == 0

    def test_conf_on_plus_arg(self):
        """ensures that #432 stays fixed"""
        proc = self.runIn(
            'scenario/pretty_asserts/conf_on',
            '-v',
            '--pretty-assert',
        )
        expected = "\n".join([
            ">>> assert myglob == 2",
            "",
            "values:",
            "    myglob = 1",
            ""
        ])
        self.assertProcOutputPattern(proc, expected)

    def test_assign_after_assert(self):
        proc = self.runIn(
            'scenario/pretty_asserts/assign_after_assert',
            '-v', '--pretty-assert',
        )
        expected = "\n".join([
            ">>> assert x == 2",
            "",
            "values:",
            "    x = 1",
            ""
        ])
        self.assertProcOutputPattern(proc, expected)

    def test_multiline_assert_statement(self):
        proc = self.runIn(
            'scenario/pretty_asserts/multiline_statement',
            '-v', '--pretty-assert',
        )
        expected = "\n".join([
            '>>> assert \\(x',
            '>>>         >',
            '>>>         y\\), \\"oh noez, x <= y\\"',
            '',
            'message:',
            '    oh noez, x <= y',
            '',
            'values:',
            '    x = 1',
            '    y = 2',
            ''
        ])
        self.assertProcOutputPattern(proc, expected)

    def test_multiline_funcdef(self):
        proc = self.runIn(
            'scenario/pretty_asserts/multiline_funcdef',
            '--pretty-assert',
        )
        expected1 = "\n".join([
            '>>> assert x > y, \\"oh noez, x <= y\\"',
            '',
            'message:',
            '    oh noez, x <= y',
            '',
            'values:',
            '    x = 1',
            '    y = 2',
            ''
        ])
        expected2 = "\n".join([
            '>>> assert not value',
            '',
            'values:',
            "    value = 'foo'",
            ''
        ])
        expected3 = "\n".join([
            '>>> assert not value',
            '',
            'values:',
            "    value = 'bar'",
            ''
        ])
        self.assertProcOutputPattern(proc, expected1)
        self.assertProcOutputPattern(proc, expected2)
        self.assertProcOutputPattern(proc, expected3)

    def test_assert_attribute_resolution(self):
        proc = self.runIn(
            'scenario/pretty_asserts/attribute_resolution',
            '-v', '--pretty-assert',
        )
        expected = "\n".join([
            ">>> assert x.x \\!= \\(self",
            ">>>                \\).x",
            "",
            "values:",
            ("    x = <test_prettyassert_attribute_resolution.TestFoo"
             " testMethod=test_ohnoez>"),
            "    x.x = 1",
            ("    self = <test_prettyassert_attribute_resolution.TestFoo"
             " testMethod=test_ohnoez>"),
            "",
        ])
        self.assertProcOutputPattern(proc, expected)

    def test_assert_attribute_resolution2(self):
        proc = self.runIn(
            'scenario/pretty_asserts/attribute_resolution2',
            '-v', '--pretty-assert',
        )
        expected = "\n".join([
            ">>> assert foo\\(\\).x \\!= self.x",
            "",
            "values:",
            ("    foo = <function (TestFoo.test_ohnoez.<locals>.|)foo at "
             "0x[a-z0-9]+>"),
            ("    self = <test_prettyassert_attribute_resolution2.TestFoo"
             " testMethod=test_ohnoez>"),
            "    self.x = 1",
            "",
        ])
        self.assertProcOutputPattern(proc, expected)

    def test_assert_ignore_passing(self):
        proc = self.runIn(
            'scenario/pretty_asserts/ignore_passing',
            '-v', '--pretty-assert',
        )
        expected1 = "\n".join([
            ">>> assert x; assert y",
            "",
            "values:",
            "    y = False",
            "",
        ])
        expected2 = "\n".join([
            ">>> assert q",
            "",
            "values:",
            "    q = 0",
            "",
        ])
        self.assertProcOutputPattern(proc, expected1)
        self.assertProcOutputPattern(proc, expected2)

    def test_unittest_assertion(self):
        proc = self.runIn(
            'scenario/pretty_asserts/unittest_assertion',
            '-v', '--pretty-assert',
        )
        # look for typical unittest output
        expected = "self.assertTrue\\(x\\)\nAssertionError: False is not true"
        stderr = self.assertProcOutputPattern(proc, expected)
        # the assertion line wasn't reprinted by prettyassert
        self.assertNotIn('>>> self.assertTrue', stderr)
        # the assertion values weren't printed by prettyassert
        self.assertNotIn('values:', stderr)

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