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import os
import pytest
import pygraphviz as pgv
from pygraphviz.scraper import _get_sg_image_scraper
def test_scraper(tmpdir):
pytest.importorskip("sphinx_gallery")
scraper = _get_sg_image_scraper()
### Source
src_dir = str(tmpdir)
src_file = os.path.join(src_dir, "simple.py") # no need for this to exist
# Create source PNG
A = pgv.AGraph()
A.add_edge(1, 2)
A.layout()
A.draw(os.path.join(src_dir, "simple.png"))
### Target
out_dir = os.path.join(src_dir, "build", "html")
os.makedirs(out_dir)
out_file = os.path.join(out_dir, "simple.png")
# Target should **not** exist
assert not os.path.isfile(out_file)
# Copy source PNG to target location
block = None
block_vars = {
"image_path_iterator": (img for img in [out_file]),
"src_file": src_file,
}
gallery_conf = {"src_dir": src_dir, "builder_name": "html"}
scraper(block, block_vars, gallery_conf)
# Target should exist
assert os.path.isfile(out_file)
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