広場投稿追加画面の刷新 (#399) (#413)

Reviewed-on: #413
Co-authored-by: miteruzo <miteruzo@naver.com>
Co-committed-by: miteruzo <miteruzo@naver.com>

backend/spec/services/post_creator_spec.rb

@@ -0,0 +1,78 @@
+require 'rails_helper'
+require 'base64'
+
+RSpec.describe PostCreator do
+  let(:actor) { create(:user, :member) }
+
+  def real_thumbnail_upload
+    gif = Base64.decode64('R0lGODdhAQABAIABAP///wAAACwAAAAAAQABAAACAkQBADs=')
+
+    Rack::Test::UploadedFile.new(
+        StringIO.new(gif),
+        'image/gif',
+        original_filename: 'thumbnail.gif')
+  end
+
+  before do
+    allow(Tag).to receive(:normalise_tags!).and_return({ tags: [], sections: {} })
+    allow(TagVersioning).to receive(:record_tag_snapshots!)
+    allow(Tag).to receive(:expand_parent_tags).and_return([])
+    allow(PostVersionRecorder).to receive(:record!)
+  end
+
+  it 'prefers thumbnail_base over an explicit upload' do
+    expect(Post).not_to receive(:resized_thumbnail_attachment)
+    allow(Post).to receive(:remote_thumbnail_attachment).and_return(
+        io: StringIO.new('remote'),
+        filename: 'resized_thumbnail.jpg',
+        content_type: 'image/jpeg')
+
+    post = described_class.new(
+        actor:,
+        attributes: {
+          title: 'title',
+          url: 'https://example.com/post',
+          thumbnail: real_thumbnail_upload,
+          thumbnail_base: 'https://example.com/thumb.jpg',
+          tags: '' }).create!
+
+    expect(post.thumbnail).to be_attached
+    expect(post.thumbnail_base).to eq('https://example.com/thumb.jpg')
+  end
+
+  it 'uses the common remote thumbnail attach path when thumbnail_base is given' do
+    expect(Post).to receive(:remote_thumbnail_attachment)
+        .with('https://example.com/thumb.jpg')
+        .and_return(
+            io: StringIO.new('thumbnail'),
+            filename: 'thumbnail.jpg',
+            content_type: 'image/jpeg')
+
+    post = described_class.new(
+        actor:,
+        attributes: {
+          title: 'title',
+          url: 'https://example.com/post',
+          thumbnail_base: 'https://example.com/thumb.jpg',
+          tags: '' }).create!
+
+    expect(post.thumbnail_base).to eq('https://example.com/thumb.jpg')
+    expect(post.thumbnail).to be_attached
+  end
+
+  it 'does not create a post when remote thumbnail fetch fails' do
+    allow(Post).to receive(:remote_thumbnail_attachment)
+        .and_raise(Post::RemoteThumbnailFetchFailed, 'サムネール画像を取得できませんでした．')
+    creator = described_class.new(
+        actor:,
+        attributes: {
+          title: 'title',
+          url: 'https://example.com/post',
+          thumbnail_base: 'https://example.com/thumb.jpg',
+          tags: '' })
+
+    post_count = Post.count
+    expect { creator.create! }.to raise_error(Post::RemoteThumbnailFetchFailed)
+    expect(Post.count).to eq(post_count)
+  end
+end