You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
66 lines
2.7 KiB
66 lines
2.7 KiB
"""Test display of images
|
|
|
|
The effect of shape metadata is validated, using Image(retina=True)
|
|
"""
|
|
|
|
from .utils import wait_for_tag
|
|
|
|
|
|
# 2x2 black square in b64 jpeg and png
|
|
b64_image_data = {
|
|
"image/png" : b'iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAIAAAD91JpzAAAAC0lEQVR4nGNgQAYAAA4AAamRc7EA\\nAAAASUVORK5CYII',
|
|
"image/jpeg" : b'/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAgGBgcGBQgHBwcJCQgKDBQNDAsLDBkSEw8UHRofHh0a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\noAoo2Qoo'
|
|
}
|
|
|
|
|
|
def imports(notebook):
|
|
commands = [
|
|
'import base64',
|
|
'from IPython.display import display, Image',
|
|
]
|
|
notebook.edit_cell(index=0, content="\n".join(commands))
|
|
notebook.execute_cell(0)
|
|
|
|
|
|
def validate_img(notebook, cell_index, image_fmt, retina):
|
|
"""Validate that image renders as expected."""
|
|
|
|
b64data = b64_image_data[image_fmt]
|
|
commands = [
|
|
'b64data = %s' % b64data,
|
|
'data = base64.decodebytes(b64data)',
|
|
'display(Image(data, retina=%s))' % retina
|
|
]
|
|
notebook.append("\n".join(commands))
|
|
notebook.execute_cell(cell_index)
|
|
|
|
# Find the image element that was just displayed
|
|
wait_for_tag(notebook.cells[cell_index], "img", single=True)
|
|
img_element = notebook.cells[cell_index].find_element_by_tag_name("img")
|
|
|
|
src = img_element.get_attribute("src")
|
|
prefix = src.split(',')[0]
|
|
expected_prefix = "data:%s;base64" % image_fmt
|
|
assert prefix == expected_prefix
|
|
|
|
expected_size = 1 if retina else 2
|
|
assert img_element.size["width"] == expected_size
|
|
assert img_element.size["height"] == expected_size
|
|
assert img_element.get_attribute("width") == str(expected_size)
|
|
assert img_element.get_attribute("height") == str(expected_size)
|
|
|
|
|
|
def test_display_image(notebook):
|
|
imports(notebook)
|
|
# PNG, non-retina
|
|
validate_img(notebook, 1, "image/png", False)
|
|
|
|
# PNG, retina display
|
|
validate_img(notebook, 2, "image/png", True)
|
|
|
|
# JPEG, non-retina
|
|
validate_img(notebook, 3, "image/jpeg", False)
|
|
|
|
# JPEG, retina display
|
|
validate_img(notebook, 4, "image/jpeg", True)
|