import sys

from . import version_skip

@version_skip

def test_dependencies_not_imported():

# Check that creating a figure without using numpy and pandas does not result in

# the import of numpy and pandas, even if they are installed.

assert "plotly" not in sys.modules

assert "numpy" not in sys.modules

assert "pandas" not in sys.modules

import plotly.graph_objects as go

fig = go.Figure().add_scatter(x=[0], y=[1])

fig.to_json()

assert "plotly" in sys.modules

assert "numpy" not in sys.modules

assert "pandas" not in sys.modules

# check that numpy is installed

import numpy as np

fig = go.Figure().add_scatter(x=np.array([0]), y=np.array([1]))

fig.to_json()

assert "numpy" in sys.modules

assert "pandas" not in sys.modules

# check that pandas is installed

import pandas as pd

fig = go.Figure().add_scatter(x=pd.Series([0]), y=pd.Series([1]))

fig.to_json()

assert "pandas" in sys.modules