"""
Test cases for rendering exporters
"""
from holoviews.element.comparison import ComparisonTestCase
from holoviews.plotting import Renderer


class TestRenderer(ComparisonTestCase):
    """
    Test the basic serializer and deserializer (i.e. using pickle),
    including metadata access.
    """

    def test_renderer_encode_unicode_types(self):
        mime_types = ['image/svg+xml', 'text/html', 'text/json']
        for mime in mime_types:
            info = {'mime_type': mime}
            encoded = Renderer.encode(('Testing «ταБЬℓσ»: 1<2 & 4+1>3', info))
            self.assertTrue(isinstance(encoded, bytes))