Python nose.tools 模块，assert_not_in() 实例源码

def test_autorestore():
    ip.user_ns['foo'] = 95
    ip.magic('store foo')
    del ip.user_ns['foo']
    c = Config()
    c.StoreMagics.autorestore = False
    orig_config = ip.config
    try:
        ip.config = c
        ip.extension_manager.reload_extension('storemagic')
        nt.assert_not_in('foo', ip.user_ns)
        c.StoreMagics.autorestore = True
        ip.extension_manager.reload_extension('storemagic')
        nt.assert_equal(ip.user_ns['foo'], 95)
    finally:
        ip.config = orig_config

def test_set_matplotlib_formats():
    from matplotlib.figure import Figure
    formatters = get_ipython().display_formatter.formatters
    for formats in [
        ('png',),
        ('pdf', 'svg'),
        ('jpeg', 'retina', 'png'),
        (),
    ]:
        active_mimes = {_fmt_mime_map[fmt] for fmt in formats}
        display.set_matplotlib_formats(*formats)
        for mime, f in formatters.items():
            if mime in active_mimes:
                nt.assert_in(Figure, f)
            else:
                nt.assert_not_in(Figure, f)

def test_run_tb():
    """Test traceback offset in %run"""
    with TemporaryDirectory() as td:
        path = pjoin(td, 'foo.py')
        with open(path, 'w') as f:
            f.write('\n'.join([
                "def foo():",
                "    return bar()",
                "def bar():",
                "    raise RuntimeError('hello!')",
                "foo()",
            ]))
        with capture_output() as io:
            _ip.magic('run {}'.format(path))
        out = io.stdout
        nt.assert_not_in("execfile", out)
        nt.assert_in("RuntimeError", out)
        nt.assert_equal(out.count("---->"), 3)

def test_script_tb():
    """Test traceback offset in `ipython script.py`"""
    with TemporaryDirectory() as td:
        path = pjoin(td, 'foo.py')
        with open(path, 'w') as f:
            f.write('\n'.join([
                "def foo():",
                "    return bar()",
                "def bar():",
                "    raise RuntimeError('hello!')",
                "foo()",
            ]))
        out, err = tt.ipexec(path)
        nt.assert_not_in("execfile", out)
        nt.assert_in("RuntimeError", out)
        nt.assert_equal(out.count("---->"), 3)

def test_line_cell_magics():
    from IPython.core.magic import register_line_cell_magic

    @register_line_cell_magic
    def _bar_cellm(line, cell):
        pass

    ip = get_ipython()
    c = ip.Completer

    # The policy here is trickier, see comments in completion code.  The
    # returned values depend on whether the user passes %% or not explicitly,
    # and this will show a difference if the same name is both a line and cell
    # magic.
    s, matches = c.complete(None, '_bar_ce')
    nt.assert_in('%_bar_cellm', matches)
    nt.assert_in('%%_bar_cellm', matches)
    s, matches = c.complete(None, '%_bar_ce')
    nt.assert_in('%_bar_cellm', matches)
    nt.assert_in('%%_bar_cellm', matches)
    s, matches = c.complete(None, '%%_bar_ce')
    nt.assert_not_in('%_bar_cellm', matches)
    nt.assert_in('%%_bar_cellm', matches)

def test_magic_color():
    ip = get_ipython()
    c = ip.Completer

    s, matches = c.complete(None, 'colo')
    nt.assert_in('%colors', matches)
    s, matches = c.complete(None, 'colo')
    nt.assert_not_in('NoColor', matches)
    s, matches = c.complete(None, 'colors ')
    nt.assert_in('NoColor', matches)
    s, matches = c.complete(None, '%colors ')
    nt.assert_in('NoColor', matches)
    s, matches = c.complete(None, 'colors NoCo')
    nt.assert_list_equal(['NoColor'], matches)
    s, matches = c.complete(None, '%colors NoCo')
    nt.assert_list_equal(['NoColor'], matches)

def test_inline_twice(self):
        "Using '%matplotlib inline' twice should not reset formatters"

        ip = self.Shell()
        gui, backend = ip.enable_matplotlib('inline')
        nt.assert_equal(gui, 'inline')

        fmts =  {'png'}
        active_mimes = {_fmt_mime_map[fmt] for fmt in fmts}
        pt.select_figure_formats(ip, fmts)

        gui, backend = ip.enable_matplotlib('inline')
        nt.assert_equal(gui, 'inline')

        for mime, f in ip.display_formatter.formatters.items():
            if mime in active_mimes:
                nt.assert_in(Figure, f)
            else:
                nt.assert_not_in(Figure, f)

def test_rehashx():
    # clear up everything
    _ip.alias_manager.clear_aliases()
    del _ip.db['syscmdlist']

    _ip.magic('rehashx')
    # Practically ALL ipython development systems will have more than 10 aliases

    nt.assert_true(len(_ip.alias_manager.aliases) > 10)
    for name, cmd in _ip.alias_manager.aliases:
        # we must strip dots from alias names
        nt.assert_not_in('.', name)

    # rehashx must fill up syscmdlist
    scoms = _ip.db['syscmdlist']
    nt.assert_true(len(scoms) > 10)

def test_alias_magic():
    """Test %alias_magic."""
    ip = get_ipython()
    mm = ip.magics_manager

    # Basic operation: both cell and line magics are created, if possible.
    ip.run_line_magic('alias_magic', 'timeit_alias timeit')
    nt.assert_in('timeit_alias', mm.magics['line'])
    nt.assert_in('timeit_alias', mm.magics['cell'])

    # --cell is specified, line magic not created.
    ip.run_line_magic('alias_magic', '--cell timeit_cell_alias timeit')
    nt.assert_not_in('timeit_cell_alias', mm.magics['line'])
    nt.assert_in('timeit_cell_alias', mm.magics['cell'])

    # Test that line alias is created successfully.
    ip.run_line_magic('alias_magic', '--line env_alias env')
    nt.assert_equal(ip.run_line_magic('env', ''),
                    ip.run_line_magic('env_alias', ''))

    # Test that line alias with parameters passed in is created successfully.
    ip.run_line_magic('alias_magic', '--line history_alias history --params ' + shlex.quote('3'))
    nt.assert_in('history_alias', mm.magics['line'])

def test_lookup_by_type_string():
    f = PlainTextFormatter()
    type_str = '%s.%s' % (C.__module__, 'C')
    f.for_type(type_str, foo_printer)

    # verify insertion
    nt.assert_in(_mod_name_key(C), f.deferred_printers)
    nt.assert_not_in(C, f.type_printers)

    nt.assert_is(f.lookup_by_type(type_str), foo_printer)
    # lookup by string doesn't cause import
    nt.assert_in(_mod_name_key(C), f.deferred_printers)
    nt.assert_not_in(C, f.type_printers)

    nt.assert_is(f.lookup_by_type(C), foo_printer)
    # should move from deferred to imported dict
    nt.assert_not_in(_mod_name_key(C), f.deferred_printers)
    nt.assert_in(C, f.type_printers)

def test_ipython_start_kernel_no_userns():
    # Issue #4188 - user_ns should be passed to shell as None, not {}
    cmd = ('from IPython import start_kernel\n'
           'start_kernel()')

    with setup_kernel(cmd) as client:
        # user_module should not be an instance of DummyMod
        msg_id = client.execute("usermod = get_ipython().user_module")
        msg = client.get_shell_msg(block=True, timeout=TIMEOUT)
        content = msg['content']
        nt.assert_equal(content['status'], u'ok')
        msg_id = client.inspect('usermod')
        msg = client.get_shell_msg(block=True, timeout=TIMEOUT)
        content = msg['content']
        assert content['found']
        text = content['data']['text/plain']
        nt.assert_not_in(u'DummyMod', text)

def test_autorestore():
    ip.user_ns['foo'] = 95
    ip.magic('store foo')
    del ip.user_ns['foo']
    c = Config()
    c.StoreMagics.autorestore = False
    orig_config = ip.config
    try:
        ip.config = c
        ip.extension_manager.reload_extension('storemagic')
        nt.assert_not_in('foo', ip.user_ns)
        c.StoreMagics.autorestore = True
        ip.extension_manager.reload_extension('storemagic')
        nt.assert_equal(ip.user_ns['foo'], 95)
    finally:
        ip.config = orig_config

def test_set_matplotlib_formats():
    from matplotlib.figure import Figure
    formatters = get_ipython().display_formatter.formatters
    for formats in [
        ('png',),
        ('pdf', 'svg'),
        ('jpeg', 'retina', 'png'),
        (),
    ]:
        active_mimes = {_fmt_mime_map[fmt] for fmt in formats}
        display.set_matplotlib_formats(*formats)
        for mime, f in formatters.items():
            if mime in active_mimes:
                nt.assert_in(Figure, f)
            else:
                nt.assert_not_in(Figure, f)

def test_run_tb():
    """Test traceback offset in %run"""
    with TemporaryDirectory() as td:
        path = pjoin(td, 'foo.py')
        with open(path, 'w') as f:
            f.write('\n'.join([
                "def foo():",
                "    return bar()",
                "def bar():",
                "    raise RuntimeError('hello!')",
                "foo()",
            ]))
        with capture_output() as io:
            _ip.magic('run {}'.format(path))
        out = io.stdout
        nt.assert_not_in("execfile", out)
        nt.assert_in("RuntimeError", out)
        nt.assert_equal(out.count("---->"), 3)

def test_script_tb():
    """Test traceback offset in `ipython script.py`"""
    with TemporaryDirectory() as td:
        path = pjoin(td, 'foo.py')
        with open(path, 'w') as f:
            f.write('\n'.join([
                "def foo():",
                "    return bar()",
                "def bar():",
                "    raise RuntimeError('hello!')",
                "foo()",
            ]))
        out, err = tt.ipexec(path)
        nt.assert_not_in("execfile", out)
        nt.assert_in("RuntimeError", out)
        nt.assert_equal(out.count("---->"), 3)

def test_line_cell_magics():
    from IPython.core.magic import register_line_cell_magic

    @register_line_cell_magic
    def _bar_cellm(line, cell):
        pass

    ip = get_ipython()
    c = ip.Completer

    # The policy here is trickier, see comments in completion code.  The
    # returned values depend on whether the user passes %% or not explicitly,
    # and this will show a difference if the same name is both a line and cell
    # magic.
    s, matches = c.complete(None, '_bar_ce')
    nt.assert_in('%_bar_cellm', matches)
    nt.assert_in('%%_bar_cellm', matches)
    s, matches = c.complete(None, '%_bar_ce')
    nt.assert_in('%_bar_cellm', matches)
    nt.assert_in('%%_bar_cellm', matches)
    s, matches = c.complete(None, '%%_bar_ce')
    nt.assert_not_in('%_bar_cellm', matches)
    nt.assert_in('%%_bar_cellm', matches)

def test_inline_twice(self):
        "Using '%matplotlib inline' twice should not reset formatters"

        ip = self.Shell()
        gui, backend = ip.enable_matplotlib('inline')
        nt.assert_equal(gui, 'inline')

        fmts =  {'png'}
        active_mimes = {_fmt_mime_map[fmt] for fmt in fmts}
        pt.select_figure_formats(ip, fmts)

        gui, backend = ip.enable_matplotlib('inline')
        nt.assert_equal(gui, 'inline')

        for mime, f in ip.display_formatter.formatters.items():
            if mime in active_mimes:
                nt.assert_in(Figure, f)
            else:
                nt.assert_not_in(Figure, f)

def test_rehashx():
    # clear up everything
    _ip.alias_manager.clear_aliases()
    del _ip.db['syscmdlist']

    _ip.magic('rehashx')
    # Practically ALL ipython development systems will have more than 10 aliases

    nt.assert_true(len(_ip.alias_manager.aliases) > 10)
    for name, cmd in _ip.alias_manager.aliases:
        # we must strip dots from alias names
        nt.assert_not_in('.', name)

    # rehashx must fill up syscmdlist
    scoms = _ip.db['syscmdlist']
    nt.assert_true(len(scoms) > 10)

def test_alias_magic():
    """Test %alias_magic."""
    ip = get_ipython()
    mm = ip.magics_manager

    # Basic operation: both cell and line magics are created, if possible.
    ip.run_line_magic('alias_magic', 'timeit_alias timeit')
    nt.assert_in('timeit_alias', mm.magics['line'])
    nt.assert_in('timeit_alias', mm.magics['cell'])

    # --cell is specified, line magic not created.
    ip.run_line_magic('alias_magic', '--cell timeit_cell_alias timeit')
    nt.assert_not_in('timeit_cell_alias', mm.magics['line'])
    nt.assert_in('timeit_cell_alias', mm.magics['cell'])

    # Test that line alias is created successfully.
    ip.run_line_magic('alias_magic', '--line env_alias env')
    nt.assert_equal(ip.run_line_magic('env', ''),
                    ip.run_line_magic('env_alias', ''))

def test_lookup_by_type_string():
    f = PlainTextFormatter()
    type_str = '%s.%s' % (C.__module__, 'C')
    f.for_type(type_str, foo_printer)

    # verify insertion
    nt.assert_in(_mod_name_key(C), f.deferred_printers)
    nt.assert_not_in(C, f.type_printers)

    nt.assert_is(f.lookup_by_type(type_str), foo_printer)
    # lookup by string doesn't cause import
    nt.assert_in(_mod_name_key(C), f.deferred_printers)
    nt.assert_not_in(C, f.type_printers)

    nt.assert_is(f.lookup_by_type(C), foo_printer)
    # should move from deferred to imported dict
    nt.assert_not_in(_mod_name_key(C), f.deferred_printers)
    nt.assert_in(C, f.type_printers)

def test_autorestore():
    ip.user_ns['foo'] = 95
    ip.magic('store foo')
    del ip.user_ns['foo']
    c = Config()
    c.StoreMagics.autorestore = False
    orig_config = ip.config
    try:
        ip.config = c
        ip.extension_manager.reload_extension('storemagic')
        nt.assert_not_in('foo', ip.user_ns)
        c.StoreMagics.autorestore = True
        ip.extension_manager.reload_extension('storemagic')
        nt.assert_equal(ip.user_ns['foo'], 95)
    finally:
        ip.config = orig_config

def test_set_matplotlib_formats():
    from matplotlib.figure import Figure
    formatters = get_ipython().display_formatter.formatters
    for formats in [
        ('png',),
        ('pdf', 'svg'),
        ('jpeg', 'retina', 'png'),
        (),
    ]:
        active_mimes = {_fmt_mime_map[fmt] for fmt in formats}
        display.set_matplotlib_formats(*formats)
        for mime, f in formatters.items():
            if mime in active_mimes:
                nt.assert_in(Figure, f)
            else:
                nt.assert_not_in(Figure, f)

def test_run_tb():
    """Test traceback offset in %run"""
    with TemporaryDirectory() as td:
        path = pjoin(td, 'foo.py')
        with open(path, 'w') as f:
            f.write('\n'.join([
                "def foo():",
                "    return bar()",
                "def bar():",
                "    raise RuntimeError('hello!')",
                "foo()",
            ]))
        with capture_output() as io:
            _ip.magic('run {}'.format(path))
        out = io.stdout
        nt.assert_not_in("execfile", out)
        nt.assert_in("RuntimeError", out)
        nt.assert_equal(out.count("---->"), 3)

def test_script_tb():
    """Test traceback offset in `ipython script.py`"""
    with TemporaryDirectory() as td:
        path = pjoin(td, 'foo.py')
        with open(path, 'w') as f:
            f.write('\n'.join([
                "def foo():",
                "    return bar()",
                "def bar():",
                "    raise RuntimeError('hello!')",
                "foo()",
            ]))
        out, err = tt.ipexec(path)
        nt.assert_not_in("execfile", out)
        nt.assert_in("RuntimeError", out)
        nt.assert_equal(out.count("---->"), 3)

def test_line_cell_magics():
    from IPython.core.magic import register_line_cell_magic

    @register_line_cell_magic
    def _bar_cellm(line, cell):
        pass

    ip = get_ipython()
    c = ip.Completer

    # The policy here is trickier, see comments in completion code.  The
    # returned values depend on whether the user passes %% or not explicitly,
    # and this will show a difference if the same name is both a line and cell
    # magic.
    s, matches = c.complete(None, '_bar_ce')
    nt.assert_in('%_bar_cellm', matches)
    nt.assert_in('%%_bar_cellm', matches)
    s, matches = c.complete(None, '%_bar_ce')
    nt.assert_in('%_bar_cellm', matches)
    nt.assert_in('%%_bar_cellm', matches)
    s, matches = c.complete(None, '%%_bar_ce')
    nt.assert_not_in('%_bar_cellm', matches)
    nt.assert_in('%%_bar_cellm', matches)

def test_inline_twice(self):
        "Using '%matplotlib inline' twice should not reset formatters"

        ip = self.Shell()
        gui, backend = ip.enable_matplotlib('inline')
        nt.assert_equal(gui, 'inline')

        fmts =  {'png'}
        active_mimes = {_fmt_mime_map[fmt] for fmt in fmts}
        pt.select_figure_formats(ip, fmts)

        gui, backend = ip.enable_matplotlib('inline')
        nt.assert_equal(gui, 'inline')

        for mime, f in ip.display_formatter.formatters.items():
            if mime in active_mimes:
                nt.assert_in(Figure, f)
            else:
                nt.assert_not_in(Figure, f)

def test_alias_magic():
    """Test %alias_magic."""
    ip = get_ipython()
    mm = ip.magics_manager

    # Basic operation: both cell and line magics are created, if possible.
    ip.run_line_magic('alias_magic', 'timeit_alias timeit')
    nt.assert_in('timeit_alias', mm.magics['line'])
    nt.assert_in('timeit_alias', mm.magics['cell'])

    # --cell is specified, line magic not created.
    ip.run_line_magic('alias_magic', '--cell timeit_cell_alias timeit')
    nt.assert_not_in('timeit_cell_alias', mm.magics['line'])
    nt.assert_in('timeit_cell_alias', mm.magics['cell'])

    # Test that line alias is created successfully.
    ip.run_line_magic('alias_magic', '--line env_alias env')
    nt.assert_equal(ip.run_line_magic('env', ''),
                    ip.run_line_magic('env_alias', ''))

def test_lookup_by_type_string():
    f = PlainTextFormatter()
    type_str = '%s.%s' % (C.__module__, 'C')
    f.for_type(type_str, foo_printer)

    # verify insertion
    nt.assert_in(_mod_name_key(C), f.deferred_printers)
    nt.assert_not_in(C, f.type_printers)

    nt.assert_is(f.lookup_by_type(type_str), foo_printer)
    # lookup by string doesn't cause import
    nt.assert_in(_mod_name_key(C), f.deferred_printers)
    nt.assert_not_in(C, f.type_printers)

    nt.assert_is(f.lookup_by_type(C), foo_printer)
    # should move from deferred to imported dict
    nt.assert_not_in(_mod_name_key(C), f.deferred_printers)
    nt.assert_in(C, f.type_printers)

def test_autorestore():
    ip.user_ns['foo'] = 95
    ip.magic('store foo')
    del ip.user_ns['foo']
    c = Config()
    c.StoreMagics.autorestore = False
    orig_config = ip.config
    try:
        ip.config = c
        ip.extension_manager.reload_extension('storemagic')
        nt.assert_not_in('foo', ip.user_ns)
        c.StoreMagics.autorestore = True
        ip.extension_manager.reload_extension('storemagic')
        nt.assert_equal(ip.user_ns['foo'], 95)
    finally:
        ip.config = orig_config

def test_set_matplotlib_formats():
    from matplotlib.figure import Figure
    formatters = get_ipython().display_formatter.formatters
    for formats in [
        ('png',),
        ('pdf', 'svg'),
        ('jpeg', 'retina', 'png'),
        (),
    ]:
        active_mimes = {_fmt_mime_map[fmt] for fmt in formats}
        display.set_matplotlib_formats(*formats)
        for mime, f in formatters.items():
            if mime in active_mimes:
                nt.assert_in(Figure, f)
            else:
                nt.assert_not_in(Figure, f)

def test_run_tb():
    """Test traceback offset in %run"""
    with TemporaryDirectory() as td:
        path = pjoin(td, 'foo.py')
        with open(path, 'w') as f:
            f.write('\n'.join([
                "def foo():",
                "    return bar()",
                "def bar():",
                "    raise RuntimeError('hello!')",
                "foo()",
            ]))
        with capture_output() as io:
            _ip.magic('run {}'.format(path))
        out = io.stdout
        nt.assert_not_in("execfile", out)
        nt.assert_in("RuntimeError", out)
        nt.assert_equal(out.count("---->"), 3)

def test_script_tb():
    """Test traceback offset in `ipython script.py`"""
    with TemporaryDirectory() as td:
        path = pjoin(td, 'foo.py')
        with open(path, 'w') as f:
            f.write('\n'.join([
                "def foo():",
                "    return bar()",
                "def bar():",
                "    raise RuntimeError('hello!')",
                "foo()",
            ]))
        out, err = tt.ipexec(path)
        nt.assert_not_in("execfile", out)
        nt.assert_in("RuntimeError", out)
        nt.assert_equal(out.count("---->"), 3)

def test_line_cell_magics():
    from IPython.core.magic import register_line_cell_magic

    @register_line_cell_magic
    def _bar_cellm(line, cell):
        pass

    ip = get_ipython()
    c = ip.Completer

    # The policy here is trickier, see comments in completion code.  The
    # returned values depend on whether the user passes %% or not explicitly,
    # and this will show a difference if the same name is both a line and cell
    # magic.
    s, matches = c.complete(None, '_bar_ce')
    nt.assert_in('%_bar_cellm', matches)
    nt.assert_in('%%_bar_cellm', matches)
    s, matches = c.complete(None, '%_bar_ce')
    nt.assert_in('%_bar_cellm', matches)
    nt.assert_in('%%_bar_cellm', matches)
    s, matches = c.complete(None, '%%_bar_ce')
    nt.assert_not_in('%_bar_cellm', matches)
    nt.assert_in('%%_bar_cellm', matches)

def test_magic_color():
    ip = get_ipython()
    c = ip.Completer

    s, matches = c.complete(None, 'colo')
    nt.assert_in('%colors', matches)
    s, matches = c.complete(None, 'colo')
    nt.assert_not_in('NoColor', matches)
    s, matches = c.complete(None, '%colors')  # No trailing space
    nt.assert_not_in('NoColor', matches)
    s, matches = c.complete(None, 'colors ')
    nt.assert_in('NoColor', matches)
    s, matches = c.complete(None, '%colors ')
    nt.assert_in('NoColor', matches)
    s, matches = c.complete(None, 'colors NoCo')
    nt.assert_list_equal(['NoColor'], matches)
    s, matches = c.complete(None, '%colors NoCo')
    nt.assert_list_equal(['NoColor'], matches)

def test_inline_twice(self):
        "Using '%matplotlib inline' twice should not reset formatters"

        ip = self.Shell()
        gui, backend = ip.enable_matplotlib('inline')
        nt.assert_equal(gui, 'inline')

        fmts =  {'png'}
        active_mimes = {_fmt_mime_map[fmt] for fmt in fmts}
        pt.select_figure_formats(ip, fmts)

        gui, backend = ip.enable_matplotlib('inline')
        nt.assert_equal(gui, 'inline')

        for mime, f in ip.display_formatter.formatters.items():
            if mime in active_mimes:
                nt.assert_in(Figure, f)
            else:
                nt.assert_not_in(Figure, f)

def test_rehashx():
    # clear up everything
    _ip.alias_manager.clear_aliases()
    del _ip.db['syscmdlist']

    _ip.magic('rehashx')
    # Practically ALL ipython development systems will have more than 10 aliases

    nt.assert_true(len(_ip.alias_manager.aliases) > 10)
    for name, cmd in _ip.alias_manager.aliases:
        # we must strip dots from alias names
        nt.assert_not_in('.', name)

    # rehashx must fill up syscmdlist
    scoms = _ip.db['syscmdlist']
    nt.assert_true(len(scoms) > 10)

def test_alias_magic():
    """Test %alias_magic."""
    ip = get_ipython()
    mm = ip.magics_manager

    # Basic operation: both cell and line magics are created, if possible.
    ip.run_line_magic('alias_magic', 'timeit_alias timeit')
    nt.assert_in('timeit_alias', mm.magics['line'])
    nt.assert_in('timeit_alias', mm.magics['cell'])

    # --cell is specified, line magic not created.
    ip.run_line_magic('alias_magic', '--cell timeit_cell_alias timeit')
    nt.assert_not_in('timeit_cell_alias', mm.magics['line'])
    nt.assert_in('timeit_cell_alias', mm.magics['cell'])

    # Test that line alias is created successfully.
    ip.run_line_magic('alias_magic', '--line env_alias env')
    nt.assert_equal(ip.run_line_magic('env', ''),
                    ip.run_line_magic('env_alias', ''))

    # Test that line alias with parameters passed in is created successfully.
    ip.run_line_magic('alias_magic', '--line history_alias history --params ' + shlex.quote('3'))
    nt.assert_in('history_alias', mm.magics['line'])

def test_lookup_by_type_string():
    f = PlainTextFormatter()
    type_str = '%s.%s' % (C.__module__, 'C')
    f.for_type(type_str, foo_printer)

    # verify insertion
    nt.assert_in(_mod_name_key(C), f.deferred_printers)
    nt.assert_not_in(C, f.type_printers)

    nt.assert_is(f.lookup_by_type(type_str), foo_printer)
    # lookup by string doesn't cause import
    nt.assert_in(_mod_name_key(C), f.deferred_printers)
    nt.assert_not_in(C, f.type_printers)

    nt.assert_is(f.lookup_by_type(C), foo_printer)
    # should move from deferred to imported dict
    nt.assert_not_in(_mod_name_key(C), f.deferred_printers)
    nt.assert_in(C, f.type_printers)

def test_video_embedding():
    """use a tempfile, with dummy-data, to ensure that video embedding doesn't crash"""
    v = display.Video("http://ignored")
    assert not v.embed
    html = v._repr_html_()
    nt.assert_not_in('src="data:', html)
    nt.assert_in('src="http://ignored"', html)

    with nt.assert_raises(ValueError):
        v = display.Video(b'abc')

    with NamedFileInTemporaryDirectory('test.mp4') as f:
        f.write(b'abc')
        f.close()

        v = display.Video(f.name)
        assert not v.embed
        html = v._repr_html_()
        nt.assert_not_in('src="data:', html)

        v = display.Video(f.name, embed=True)
        html = v._repr_html_()
        nt.assert_in('src="data:video/mp4;base64,YWJj"',html)

        v = display.Video(f.name, embed=True, mimetype='video/other')
        html = v._repr_html_()
        nt.assert_in('src="data:video/other;base64,YWJj"',html)

        v = display.Video(b'abc', embed=True, mimetype='video/mp4')
        html = v._repr_html_()
        nt.assert_in('src="data:video/mp4;base64,YWJj"',html)

        v = display.Video(u'YWJj', embed=True, mimetype='video/xyz')
        html = v._repr_html_()
        nt.assert_in('src="data:video/xyz;base64,YWJj"',html)

def test_magic_config():
    ip = get_ipython()
    c = ip.Completer

    s, matches = c.complete(None, 'conf')
    nt.assert_in('%config', matches)
    s, matches = c.complete(None, 'conf')
    nt.assert_not_in('AliasManager', matches)
    s, matches = c.complete(None, 'config ')
    nt.assert_in('AliasManager', matches)
    s, matches = c.complete(None, '%config ')
    nt.assert_in('AliasManager', matches)
    s, matches = c.complete(None, 'config Ali')
    nt.assert_list_equal(['AliasManager'], matches)
    s, matches = c.complete(None, '%config Ali')
    nt.assert_list_equal(['AliasManager'], matches)
    s, matches = c.complete(None, 'config AliasManager')
    nt.assert_list_equal(['AliasManager'], matches)
    s, matches = c.complete(None, '%config AliasManager')
    nt.assert_list_equal(['AliasManager'], matches)
    s, matches = c.complete(None, 'config AliasManager.')
    nt.assert_in('AliasManager.default_aliases', matches)
    s, matches = c.complete(None, '%config AliasManager.')
    nt.assert_in('AliasManager.default_aliases', matches)
    s, matches = c.complete(None, 'config AliasManager.de')
    nt.assert_list_equal(['AliasManager.default_aliases'], matches)
    s, matches = c.complete(None, 'config AliasManager.de')
    nt.assert_list_equal(['AliasManager.default_aliases'], matches)

def test_aimport_module_completer():
    ip = get_ipython()
    _, matches = ip.complete('i', '%aimport i')
    nt.assert_in('io', matches)
    nt.assert_not_in('int', matches)

def test_nested_import_module_completer():
    ip = get_ipython()
    _, matches = ip.complete(None, 'import IPython.co', 17)
    nt.assert_in('IPython.core', matches)
    nt.assert_not_in('import IPython.core', matches)
    nt.assert_not_in('IPython.display', matches)

def test_import_module_completer():
    ip = get_ipython()
    _, matches = ip.complete('i', 'import i')
    nt.assert_in('io', matches)
    nt.assert_not_in('int', matches)

def test_from_module_completer():
    ip = get_ipython()
    _, matches = ip.complete('B', 'from io import B', 16)
    nt.assert_in('BytesIO', matches)
    nt.assert_not_in('BaseException', matches)

def test_select_figure_formats_str():
    ip = get_ipython()
    for fmt, active_mime in _fmt_mime_map.items():
        pt.select_figure_formats(ip, fmt)
        for mime, f in ip.display_formatter.formatters.items():
            if mime == active_mime:
                nt.assert_in(Figure, f)
            else:
                nt.assert_not_in(Figure, f)

def test_init_colors():
    # ensure colors are not present in signature info
    info = inspector.info(HasSignature)
    init_def = info['init_definition']
    nt.assert_not_in('[0m', init_def)

def test_unregistering(self):
        err_transformer = ErrorTransformer()
        ip.ast_transformers.append(err_transformer)

        with tt.AssertPrints("unregister", channel='stderr'):
            ip.run_cell("1 + 2")

        # This should have been removed.
        nt.assert_not_in(err_transformer, ip.ast_transformers)

def test_alias_lifecycle():
    name = 'test_alias1'
    cmd = 'echo "Hello"'
    am = _ip.alias_manager
    am.clear_aliases()
    am.define_alias(name, cmd)
    assert am.is_alias(name)
    nt.assert_equal(am.retrieve_alias(name), cmd)
    nt.assert_in((name, cmd), am.aliases)

    # Test running the alias
    orig_system = _ip.system
    result = []
    _ip.system = result.append
    try:
        _ip.run_cell('%{}'.format(name))
        result = [c.strip() for c in result]
        nt.assert_equal(result, [cmd])
    finally:
        _ip.system = orig_system

    # Test removing the alias
    am.undefine_alias(name)
    assert not am.is_alias(name)
    with nt.assert_raises(ValueError):
        am.retrieve_alias(name)
    nt.assert_not_in((name, cmd), am.aliases)

def test_for_type_string():
    f = PlainTextFormatter()

    type_str = '%s.%s' % (C.__module__, 'C')

    # initial return, None
    nt.assert_is(f.for_type(type_str, foo_printer), None)
    # no func queries
    nt.assert_is(f.for_type(type_str), foo_printer)
    nt.assert_in(_mod_name_key(C), f.deferred_printers)
    nt.assert_is(f.for_type(C), foo_printer)
    nt.assert_not_in(_mod_name_key(C), f.deferred_printers)
    nt.assert_in(C, f.type_printers)

def test_lookup_string():
    f = PlainTextFormatter()
    type_str = '%s.%s' % (C.__module__, 'C')

    f.for_type(type_str, foo_printer)
    nt.assert_is(f.lookup(C()), foo_printer)
    # should move from deferred to imported dict
    nt.assert_not_in(_mod_name_key(C), f.deferred_printers)
    nt.assert_in(C, f.type_printers)