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import binascii
from glob import glob
from pathlib import Path
import pytest
import fpdf
from test.conftest import assert_pdf_equal, ensure_rss_memory_below, time_execution
HERE = Path(__file__).resolve().parent
def test_load_text_file():
file = HERE / "__init__.py"
contents = '"""This package contains image tests"""\n'
bc = contents.encode()
resource = fpdf.image_parsing.load_image(str(file)).getvalue()
# loaded a text file in binary mode, may contain DOS style line endings.
resource = resource.replace(b"\r\n", b"\n")
assert bytes(resource) == bc
def test_load_base64_data(tmp_path):
pdf = fpdf.FPDF()
pdf.add_page()
pdf.image(
"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQBAMAAADt3eJSAAAAMFBMVEU0OkArMjhobHEoPUPFEBIuO0L+AAC2FBZ2JyuNICOfGx7xAwT"
"jCAlCNTvVDA1aLzQ3COjMAAAAVUlEQVQI12NgwAaCDSA0888GCItjn0szWGBJTVoGSCjWs8TleQCQYV95evdxkFT8Kpe0PLDi5WfKd4LUsN5zS1sKFolt8bwAZrCa"
"GqNYJAgFDEpQAAAzmxafI4vZWwAAAABJRU5ErkJggg=="
)
assert_pdf_equal(pdf, HERE / "load_base64_data.pdf", tmp_path)
def test_load_invalid_base64_data():
pdf = fpdf.FPDF()
pdf.add_page()
with pytest.raises(binascii.Error):
pdf.image("data:image/png;base64,GARBAGE")
# ensure memory usage does not get too high - this value depends on Python version:
@ensure_rss_memory_below(mib=6)
def test_share_images_cache(tmp_path):
image_cache = None
def build_pdf_with_big_images():
nonlocal image_cache
pdf = fpdf.FPDF()
if image_cache is None:
image_cache = pdf.image_cache
else:
pdf.image_cache = image_cache
pdf.add_page()
for img_path in glob(f"{HERE}/png_images/*.png"):
pdf.image(img_path, h=pdf.eph)
with (tmp_path / "out.pdf").open("wb") as pdf_file:
pdf.output(pdf_file)
# Reset the "usages" count:
image_cache.reset_usages()
with time_execution() as duration:
build_pdf_with_big_images()
first_time_duration = duration.seconds
with time_execution() as duration:
build_pdf_with_big_images()
assert duration.seconds < first_time_duration / 2
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