def test_st_image_PIL_array(self):
"""Test st.image with a PIL array."""
imgs = [
Image.new("RGB", (64, 64), color="red"),
Image.new("RGB", (64, 64), color="blue"),
Image.new("RGB", (64, 64), color="green"),
]
st.image(
imgs,
caption=["some caption"] * 3,
width=200,
use_column_width=True,
clamp=True,
output_format="PNG",
)
el = self.get_delta_from_queue().new_element
self.assertEqual(el.imgs.width, -2)
# locate resultant file in the file manager and check its metadata.
from streamlit.elements.image import _PIL_to_bytes
for idx in range(len(imgs)):
file_id = _calculate_file_id(
_PIL_to_bytes(imgs[idx], format="PNG"), "image/png"
)
self.assertEqual(el.imgs.imgs[idx].caption, "some caption")
self.assertTrue(file_id in media_file_manager)
afile = media_file_manager.get(file_id)
self.assertEqual(afile.mimetype, "image/png")
self.assertEqual(afile.url, el.imgs.imgs[idx].url)
def test_st_image_PIL_image(self):
"""Test st.image with PIL image."""
img = Image.new("RGB", (64, 64), color="red")
st.image(img, caption="some caption", width=100, output_format="PNG")
el = self.get_delta_from_queue().new_element
self.assertEqual(el.imgs.width, 100)
self.assertEqual(el.imgs.imgs[0].caption, "some caption")
# locate resultant file in the file manager and check its metadata.
from streamlit.elements.image import _PIL_to_bytes
file_id = _calculate_file_id(_PIL_to_bytes(img, format="PNG"), "image/png")
self.assertTrue(file_id in media_file_manager)
afile = media_file_manager.get(file_id)
self.assertEqual(afile.mimetype, "image/png")
self.assertEqual(afile.url, el.imgs.imgs[0].url)