import pytest

from scrapy.utils.console import get_shell_embed_func

try:
    import bpython

    bpy = True
    del bpython
except ImportError:
    bpy = False
try:
    import IPython

    ipy = True
    del IPython
except ImportError:
    ipy = False


def test_get_shell_embed_func():
    shell = get_shell_embed_func(["invalid"])
    assert shell is None

    shell = get_shell_embed_func(["invalid", "python"])
    assert callable(shell)
    assert shell.__name__ == "_embed_standard_shell"


@pytest.mark.skipif(not bpy, reason="bpython not available in testenv")
def test_get_shell_embed_func_bpython():
    shell = get_shell_embed_func(["bpython"])
    assert callable(shell)
    assert shell.__name__ == "_embed_bpython_shell"


@pytest.mark.skipif(not ipy, reason="IPython not available in testenv")
def test_get_shell_embed_func_ipython():
    # default shell should be 'ipython'
    shell = get_shell_embed_func()
    assert shell.__name__ == "_embed_ipython_shell"