# coding: utf-8
"""Tests for IPython.core.application"""

import os
import tempfile

import nose.tools as nt

from traitlets import Unicode

from IPython.core.application import BaseIPythonApplication
from IPython.testing import decorators as dec
from IPython.utils import py3compat
from IPython.utils.tempdir import TemporaryDirectory


@dec.onlyif_unicode_paths
def test_unicode_cwd():
    """Check that IPython starts with non-ascii characters in the path."""
    wd = tempfile.mkdtemp(suffix=u"€")
    
    old_wd = py3compat.getcwd()
    os.chdir(wd)
    #raise Exception(repr(py3compat.getcwd()))
    try:
        app = BaseIPythonApplication()
        # The lines below are copied from Application.initialize()
        app.init_profile_dir()
        app.init_config_files()
        app.load_config_file(suppress_errors=False)
    finally:
        os.chdir(old_wd)

@dec.onlyif_unicode_paths
def test_unicode_ipdir():
    """Check that IPython starts with non-ascii characters in the IP dir."""
    ipdir = tempfile.mkdtemp(suffix=u"€")
    
    # Create the config file, so it tries to load it.
    with open(os.path.join(ipdir, 'ipython_config.py'), "w") as f:
        pass
    
    old_ipdir1 = os.environ.pop("IPYTHONDIR", None)
    old_ipdir2 = os.environ.pop("IPYTHON_DIR", None)
    os.environ["IPYTHONDIR"] = py3compat.unicode_to_str(ipdir, "utf-8")
    try:
        app = BaseIPythonApplication()
        # The lines below are copied from Application.initialize()
        app.init_profile_dir()
        app.init_config_files()
        app.load_config_file(suppress_errors=False)
    finally:
        if old_ipdir1:
            os.environ["IPYTHONDIR"] = old_ipdir1
        if old_ipdir2:
            os.environ["IPYTHONDIR"] = old_ipdir2

def test_cli_priority():
    with TemporaryDirectory() as td:

        class TestApp(BaseIPythonApplication):
            test = Unicode().tag(config=True)

        # Create the config file, so it tries to load it.
        with open(os.path.join(td, 'ipython_config.py'), "w") as f:
            f.write("c.TestApp.test = 'config file'")

        app = TestApp()
        app.initialize(['--profile-dir', td])
        nt.assert_equal(app.test, 'config file')
        app = TestApp()
        app.initialize(['--profile-dir', td, '--TestApp.test=cli'])
        nt.assert_equal(app.test, 'cli')

