~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2005-2010 Canonical Ltd

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

"""Tests for the bzrlib ui

"""

import os

import re

import time

from bzrlib import (

    errors,

    tests,

    ui as _mod_ui,

    )

from bzrlib.symbol_versioning import (

    deprecated_in,

    )

from bzrlib.tests import test_progress

from bzrlib.ui import text as _mod_ui_text

class TestTextUIFactory(tests.TestCase):

    def test_text_factory_ascii_password(self):

        ui = tests.TestUIFactory(stdin='secret\n',

                                 stdout=tests.StringIOWrapper(),

                                 stderr=tests.StringIOWrapper())

        pb = ui.nested_progress_bar()

        try:

            self.assertEqual('secret',

                             self.apply_redirected(ui.stdin, ui.stdout,

                                                   ui.stderr,

                                                   ui.get_password))

            # ': ' is appended to prompt

            self.assertEqual(': ', ui.stderr.getvalue())

            self.assertEqual('', ui.stdout.readline())

            # stdin should be empty

            self.assertEqual('', ui.stdin.readline())

        finally:

            pb.finished()

    def test_text_factory_utf8_password(self):

        """Test an utf8 password.

        We can't predict what encoding users will have for stdin, so we force

        it to utf8 to test that we transport the password correctly.

        """

        ui = tests.TestUIFactory(stdin=u'baz\u1234'.encode('utf8'),

                                 stdout=tests.StringIOWrapper(),

                                 stderr=tests.StringIOWrapper())

        ui.stderr.encoding = ui.stdout.encoding = ui.stdin.encoding = 'utf8'

        pb = ui.nested_progress_bar()

        try:

            password = self.apply_redirected(ui.stdin, ui.stdout, ui.stderr,

                                             ui.get_password,

                                             u'Hello \u1234 %(user)s',

                                             user=u'some\u1234')

            # We use StringIO objects, we need to decode them

            self.assertEqual(u'baz\u1234', password.decode('utf8'))

            self.assertEqual(u'Hello \u1234 some\u1234: ',

                             ui.stderr.getvalue().decode('utf8'))

            # stdin and stdout should be empty

            self.assertEqual('', ui.stdin.readline())

            self.assertEqual('', ui.stdout.readline())

        finally:

            pb.finished()

    def test_progress_note(self):

        stderr = tests.StringIOWrapper()

        stdout = tests.StringIOWrapper()

        ui_factory = _mod_ui_text.TextUIFactory(stdin=tests.StringIOWrapper(''),

                                                stderr=stderr,

                                                stdout=stdout)

        pb = ui_factory.nested_progress_bar()

        try:

            result = self.applyDeprecated(deprecated_in((2, 1, 0)),

                pb.note,

                't')

            self.assertEqual(None, result)

            self.assertEqual("t\n", stdout.getvalue())

            # Since there was no update() call, there should be no clear() call

            self.failIf(re.search(r'^\r {10,}\r$',

                                  stderr.getvalue()) is not None,

                        'We cleared the stderr without anything to put there')

        finally:

            pb.finished()

    def test_progress_note_clears(self):

        stderr = test_progress._TTYStringIO()

        stdout = test_progress._TTYStringIO()

        # so that we get a TextProgressBar

        os.environ['TERM'] = 'xterm'

        ui_factory = _mod_ui_text.TextUIFactory(

            stdin=tests.StringIOWrapper(''),

            stdout=stdout, stderr=stderr)

        self.assertIsInstance(ui_factory._progress_view,

                              _mod_ui_text.TextProgressView)

        pb = ui_factory.nested_progress_bar()

        try:

            # Create a progress update that isn't throttled

            pb.update('x', 1, 1)

            result = self.applyDeprecated(deprecated_in((2, 1, 0)),

                pb.note, 't')

            self.assertEqual(None, result)

            self.assertEqual("t\n", stdout.getvalue())

            # the exact contents will depend on the terminal width and we don't

            # care about that right now - but you're probably running it on at

            # least a 10-character wide terminal :)

            self.assertContainsRe(stderr.getvalue(), r'\r {10,}\r$')

        finally:

            pb.finished()

    def test_text_ui_get_boolean(self):

        stdin = tests.StringIOWrapper("y\n" # True

                                      "n\n" # False

                                      "yes with garbage\nY\n" # True

                                      "not an answer\nno\n" # False

                                      "I'm sure!\nyes\n" # True

                                      "NO\n" # False

                                      "foo\n")

        stdout = tests.StringIOWrapper()

        stderr = tests.StringIOWrapper()

        factory = _mod_ui_text.TextUIFactory(stdin, stdout, stderr)

        self.assertEqual(True, factory.get_boolean(""))

        self.assertEqual(False, factory.get_boolean(""))

        self.assertEqual(True, factory.get_boolean(""))

        self.assertEqual(False, factory.get_boolean(""))

        self.assertEqual(True, factory.get_boolean(""))

        self.assertEqual(False, factory.get_boolean(""))

        self.assertEqual("foo\n", factory.stdin.read())

        # stdin should be empty

        self.assertEqual('', factory.stdin.readline())

    def test_text_ui_get_integer(self):

        stdin = tests.StringIOWrapper(

            "1\n"

            "  -2  \n"

            "hmmm\nwhat else ?\nCome on\nok 42\n4.24\n42\n")

        stdout = tests.StringIOWrapper()

        stderr = tests.StringIOWrapper()

        factory = _mod_ui_text.TextUIFactory(stdin, stdout, stderr)

        self.assertEqual(1, factory.get_integer(""))

        self.assertEqual(-2, factory.get_integer(""))

        self.assertEqual(42, factory.get_integer(""))

    def test_text_factory_prompt(self):

        # see <https://launchpad.net/bugs/365891>

        StringIO = tests.StringIOWrapper

        factory = _mod_ui_text.TextUIFactory(StringIO(), StringIO(), StringIO())

        factory.prompt('foo %2e')

        self.assertEqual('', factory.stdout.getvalue())

        self.assertEqual('foo %2e', factory.stderr.getvalue())

    def test_text_factory_prompts_and_clears(self):

        # a get_boolean call should clear the pb before prompting

        out = test_progress._TTYStringIO()

        os.environ['TERM'] = 'xterm'

        factory = _mod_ui_text.TextUIFactory(

            stdin=tests.StringIOWrapper("yada\ny\n"),

            stdout=out, stderr=out)

        pb = factory.nested_progress_bar()

        pb.show_bar = False

        pb.show_spinner = False

        pb.show_count = False

        pb.update("foo", 0, 1)

        self.assertEqual(True,

                         self.apply_redirected(None, factory.stdout,

                                               factory.stdout,

                                               factory.get_boolean,

                                               "what do you want"))

        output = out.getvalue()

        self.assertContainsRe(factory.stdout.getvalue(),

            "foo *\r\r  *\r*")

        self.assertContainsRe(factory.stdout.getvalue(),

            r"what do you want\? \[y/n\]: what do you want\? \[y/n\]: ")

        # stdin should have been totally consumed

        self.assertEqual('', factory.stdin.readline())

    def test_text_tick_after_update(self):

        ui_factory = _mod_ui_text.TextUIFactory(stdout=tests.StringIOWrapper(),

                                                stderr=tests.StringIOWrapper())

        pb = ui_factory.nested_progress_bar()

        try:

            pb.update('task', 0, 3)

            # Reset the clock, so that it actually tries to repaint itself

            ui_factory._progress_view._last_repaint = time.time() - 1.0

            pb.tick()

        finally:

            pb.finished()

    def test_text_ui_getusername(self):

        factory = _mod_ui_text.TextUIFactory(None, None, None)

        factory.stdin = tests.StringIOWrapper("someuser\n\n")

        factory.stdout = tests.StringIOWrapper()

        factory.stderr = tests.StringIOWrapper()

        factory.stdout.encoding = "utf8"

        # there is no output from the base factory

        self.assertEqual("someuser",

                         factory.get_username('Hello %(host)s', host='some'))

        self.assertEquals("Hello some: ", factory.stderr.getvalue())

        self.assertEquals('', factory.stdout.getvalue())

        self.assertEqual("", factory.get_username("Gebruiker"))

        # stdin should be empty

        self.assertEqual('', factory.stdin.readline())

    def test_text_ui_getusername_utf8(self):

        ui = tests.TestUIFactory(stdin=u'someuser\u1234'.encode('utf8'),

                                 stdout=tests.StringIOWrapper(),

                                 stderr=tests.StringIOWrapper())

        ui.stderr.encoding = ui.stdout.encoding = ui.stdin.encoding = "utf8"

        pb = ui.nested_progress_bar()

        try:

            # there is no output from the base factory

            username = self.apply_redirected(ui.stdin, ui.stdout, ui.stderr,

                ui.get_username, u'Hello\u1234 %(host)s', host=u'some\u1234')

            self.assertEquals(u"someuser\u1234", username.decode('utf8'))

            self.assertEquals(u"Hello\u1234 some\u1234: ",

                              ui.stderr.getvalue().decode("utf8"))

            self.assertEquals('', ui.stdout.getvalue())

        finally:

            pb.finished()

    def test_quietness(self):

        os.environ['BZR_PROGRESS_BAR'] = 'text'

        ui_factory = _mod_ui_text.TextUIFactory(None,

            test_progress._TTYStringIO(),

            test_progress._TTYStringIO())

        self.assertIsInstance(ui_factory._progress_view,

            _mod_ui_text.TextProgressView)

        ui_factory.be_quiet(True)

        self.assertIsInstance(ui_factory._progress_view,

            _mod_ui_text.NullProgressView)

class TestTextUIOutputStream(tests.TestCase):

    """Tests for output stream that synchronizes with progress bar."""

    def test_output_clears_terminal(self):

        stdout = tests.StringIOWrapper()

        stderr = tests.StringIOWrapper()

        clear_calls = []

        uif =  _mod_ui_text.TextUIFactory(None, stdout, stderr)

        uif.clear_term = lambda: clear_calls.append('clear')

        stream = _mod_ui_text.TextUIOutputStream(uif, uif.stdout)

        stream.write("Hello world!\n")

        stream.write("there's more...\n")

        stream.writelines(["1\n", "2\n", "3\n"])

        self.assertEqual(stdout.getvalue(),

            "Hello world!\n"

            "there's more...\n"

            "1\n2\n3\n")

        self.assertEqual(['clear', 'clear', 'clear'],

            clear_calls)

        stream.flush()

class UITests(tests.TestCase):

    def test_progress_construction(self):

        """TextUIFactory constructs the right progress view.

        """

        TTYStringIO = test_progress._TTYStringIO

        FileStringIO = tests.StringIOWrapper

        for (file_class, term, pb, expected_pb_class) in (

            # on an xterm, either use them or not as the user requests,

            # otherwise default on

            (TTYStringIO, 'xterm', 'none', _mod_ui_text.NullProgressView),

            (TTYStringIO, 'xterm', 'text', _mod_ui_text.TextProgressView),

            (TTYStringIO, 'xterm', None, _mod_ui_text.TextProgressView),

            # on a dumb terminal, again if there's explicit configuration do

            # it, otherwise default off

            (TTYStringIO, 'dumb', 'none', _mod_ui_text.NullProgressView),

            (TTYStringIO, 'dumb', 'text', _mod_ui_text.TextProgressView),

            (TTYStringIO, 'dumb', None, _mod_ui_text.NullProgressView),

            # on a non-tty terminal, it's null regardless of $TERM

            (FileStringIO, 'xterm', None, _mod_ui_text.NullProgressView),

            (FileStringIO, 'dumb', None, _mod_ui_text.NullProgressView),

            # however, it can still be forced on

            (FileStringIO, 'dumb', 'text', _mod_ui_text.TextProgressView),

            ):

            os.environ['TERM'] = term

            if pb is None:

                if 'BZR_PROGRESS_BAR' in os.environ:

                    del os.environ['BZR_PROGRESS_BAR']

            else:

                os.environ['BZR_PROGRESS_BAR'] = pb

            stdin = file_class('')

            stderr = file_class()

            stdout = file_class()

            uif = _mod_ui.make_ui_for_terminal(stdin, stdout, stderr)

            self.assertIsInstance(uif, _mod_ui_text.TextUIFactory,

                "TERM=%s BZR_PROGRESS_BAR=%s uif=%r" % (term, pb, uif,))

            self.assertIsInstance(uif.make_progress_view(),

                expected_pb_class,

                "TERM=%s BZR_PROGRESS_BAR=%s uif=%r" % (term, pb, uif,))

    def test_text_ui_non_terminal(self):

        """Even on non-ttys, make_ui_for_terminal gives a text ui."""

        stdin = test_progress._NonTTYStringIO('')

        stderr = test_progress._NonTTYStringIO()

        stdout = test_progress._NonTTYStringIO()

        for term_type in ['dumb', None, 'xterm']:

            if term_type is None:

                del os.environ['TERM']

            else:

                os.environ['TERM'] = term_type

            uif = _mod_ui.make_ui_for_terminal(stdin, stdout, stderr)

            self.assertIsInstance(uif, _mod_ui_text.TextUIFactory,

                'TERM=%r' % (term_type,))

class SilentUITests(tests.TestCase):

    def test_silent_factory_get_password(self):

        # A silent factory that can't do user interaction can't get a

        # password.  Possibly it should raise a more specific error but it

        # can't succeed.

        ui = _mod_ui.SilentUIFactory()

        stdout = tests.StringIOWrapper()

        self.assertRaises(

            NotImplementedError,

            self.apply_redirected,

            None, stdout, stdout, ui.get_password)

        # and it didn't write anything out either

        self.assertEqual('', stdout.getvalue())

    def test_silent_ui_getbool(self):

        factory = _mod_ui.SilentUIFactory()

        stdout = tests.StringIOWrapper()

        self.assertRaises(

            NotImplementedError,

            self.apply_redirected,

            None, stdout, stdout, factory.get_boolean, "foo")

class TestUIFactoryTests(tests.TestCase):

    def test_test_ui_factory_progress(self):

        # there's no output; we just want to make sure this doesn't crash -

        # see https://bugs.edge.launchpad.net/bzr/+bug/408201

        ui = tests.TestUIFactory()

        pb = ui.nested_progress_bar()

        pb.update('hello')

        pb.tick()

        pb.finished()

class CannedInputUIFactoryTests(tests.TestCase):

    def test_canned_input_get_input(self):

        uif = _mod_ui.CannedInputUIFactory([True, 'mbp', 'password', 42])

        self.assertEqual(True, uif.get_boolean('Extra cheese?'))

        self.assertEqual('mbp', uif.get_username('Enter your user name'))

        self.assertEqual('password',

                         uif.get_password('Password for %(host)s',

                                          host='example.com'))

        self.assertEqual(42, uif.get_integer('And all that jazz ?'))

class TestBoolFromString(tests.TestCase):

    def assertIsTrue(self, s, accepted_values=None):

        res = _mod_ui.bool_from_string(s, accepted_values=accepted_values)

        self.assertEquals(True, res)

    def assertIsFalse(self, s, accepted_values=None):

        res = _mod_ui.bool_from_string(s, accepted_values=accepted_values)

        self.assertEquals(False, res)

    def assertIsNone(self, s, accepted_values=None):

        res = _mod_ui.bool_from_string(s, accepted_values=accepted_values)

        self.assertIs(None, res)

    def test_know_valid_values(self):

        self.assertIsTrue('true')

        self.assertIsFalse('false')

        self.assertIsTrue('1')

        self.assertIsFalse('0')

        self.assertIsTrue('on')

        self.assertIsFalse('off')

        self.assertIsTrue('yes')

        self.assertIsFalse('no')

        self.assertIsTrue('y')

        self.assertIsFalse('n')

        # Also try some case variations

        self.assertIsTrue('True')

        self.assertIsFalse('False')

        self.assertIsTrue('On')

        self.assertIsFalse('Off')

        self.assertIsTrue('ON')

        self.assertIsFalse('OFF')

        self.assertIsTrue('oN')

        self.assertIsFalse('oFf')

    def test_invalid_values(self):

        self.assertIsNone(None)

        self.assertIsNone('doubt')

        self.assertIsNone('frue')

        self.assertIsNone('talse')

        self.assertIsNone('42')

    def test_provided_values(self):

        av = dict(y=True, n=False, yes=True, no=False)

        self.assertIsTrue('y', av)

        self.assertIsTrue('Y', av)

        self.assertIsTrue('Yes', av)

        self.assertIsFalse('n', av)

        self.assertIsFalse('N', av)

        self.assertIsFalse('No', av)

        self.assertIsNone('1', av)

        self.assertIsNone('0', av)

        self.assertIsNone('on', av)

        self.assertIsNone('off', av)