Jamey Greenwood
2b5b749a69
- Add Optimizer module with lossless WebP conversion - Generate responsive variants at [400, 800, 1200] widths - Only create sizes <= source dimensions (no upscaling) - Support AVIF, WebP, and JPEG output formats - Add disk cache at priv/static/image_cache/ - Add comprehensive test suite (12 tests) - Add image fixtures helper for testing Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
122 lines
3.7 KiB
Elixir
122 lines
3.7 KiB
Elixir
defmodule SimpleshopTheme.Images.OptimizerTest do
|
|
use SimpleshopTheme.DataCase, async: false
|
|
|
|
alias SimpleshopTheme.Images.Optimizer
|
|
import SimpleshopTheme.ImageFixtures
|
|
|
|
setup do
|
|
cleanup_cache()
|
|
on_exit(&cleanup_cache/0)
|
|
:ok
|
|
end
|
|
|
|
describe "applicable_widths/1" do
|
|
test "returns all widths for large source" do
|
|
assert [400, 800, 1200] = Optimizer.applicable_widths(1500)
|
|
end
|
|
|
|
test "excludes widths larger than source" do
|
|
assert [400, 800] = Optimizer.applicable_widths(900)
|
|
assert [400] = Optimizer.applicable_widths(500)
|
|
end
|
|
|
|
test "returns source width when smaller than minimum" do
|
|
assert [300] = Optimizer.applicable_widths(300)
|
|
assert [50] = Optimizer.applicable_widths(50)
|
|
end
|
|
end
|
|
|
|
describe "to_lossless_webp/1" do
|
|
test "converts image and returns dimensions" do
|
|
{:ok, webp, width, height} = Optimizer.to_lossless_webp(sample_jpeg())
|
|
|
|
assert is_binary(webp)
|
|
assert width == 1200
|
|
assert height == 800
|
|
# WebP magic bytes: RIFF....WEBP
|
|
assert <<"RIFF", _size::binary-size(4), "WEBP", _::binary>> = webp
|
|
end
|
|
|
|
test "returns error for invalid data" do
|
|
assert {:error, _} = Optimizer.to_lossless_webp("not an image")
|
|
end
|
|
end
|
|
|
|
describe "process_for_image/1" do
|
|
test "generates all variants for 1200px image" do
|
|
image = image_fixture(%{source_width: 1200, source_height: 800})
|
|
|
|
assert {:ok, [400, 800, 1200]} = Optimizer.process_for_image(image.id)
|
|
|
|
for w <- [400, 800, 1200], fmt <- [:avif, :webp, :jpg] do
|
|
assert File.exists?(cache_path(image.id, w, fmt)),
|
|
"Missing #{w}.#{fmt}"
|
|
end
|
|
|
|
assert File.exists?(cache_path(image.id, "thumb", :jpg))
|
|
end
|
|
|
|
test "generates only applicable widths for smaller image" do
|
|
# Create fixture with smaller source width
|
|
{:ok, webp, _w, _h} = Optimizer.to_lossless_webp(sample_jpeg())
|
|
|
|
image =
|
|
%SimpleshopTheme.Media.Image{}
|
|
|> SimpleshopTheme.Media.Image.changeset(%{
|
|
image_type: "product",
|
|
filename: "small.jpg",
|
|
content_type: "image/webp",
|
|
file_size: byte_size(webp),
|
|
data: webp,
|
|
source_width: 600,
|
|
source_height: 400,
|
|
variants_status: "pending",
|
|
is_svg: false
|
|
})
|
|
|> Repo.insert!()
|
|
|
|
assert {:ok, [400]} = Optimizer.process_for_image(image.id)
|
|
|
|
assert File.exists?(cache_path(image.id, 400, :avif))
|
|
refute File.exists?(cache_path(image.id, 800, :avif))
|
|
end
|
|
|
|
test "skips SVG images" do
|
|
image = svg_fixture()
|
|
assert {:ok, :svg_skipped} = Optimizer.process_for_image(image.id)
|
|
end
|
|
|
|
test "returns error for missing image" do
|
|
assert {:error, :not_found} = Optimizer.process_for_image(Ecto.UUID.generate())
|
|
end
|
|
|
|
test "is idempotent - skips existing files" do
|
|
image = image_fixture(%{source_width: 1200, source_height: 800})
|
|
{:ok, _} = Optimizer.process_for_image(image.id)
|
|
|
|
path = cache_path(image.id, 400, :avif)
|
|
{:ok, %{mtime: mtime1}} = File.stat(path)
|
|
|
|
Process.sleep(1100)
|
|
{:ok, _} = Optimizer.process_for_image(image.id)
|
|
|
|
{:ok, %{mtime: mtime2}} = File.stat(path)
|
|
assert mtime1 == mtime2, "File was regenerated"
|
|
end
|
|
end
|
|
|
|
describe "disk_variants_exist?/2" do
|
|
test "returns true when all variants exist" do
|
|
image = image_fixture(%{source_width: 1200, source_height: 800})
|
|
{:ok, _} = Optimizer.process_for_image(image.id)
|
|
|
|
assert Optimizer.disk_variants_exist?(image.id, 1200)
|
|
end
|
|
|
|
test "returns false when variants missing" do
|
|
image = image_fixture(%{source_width: 1200, source_height: 800})
|
|
refute Optimizer.disk_variants_exist?(image.id, 1200)
|
|
end
|
|
end
|
|
end
|