#399

backend/spec/models/post_spec.rb

@@ -244,6 +244,44 @@ RSpec.describe Post, type: :model do
   end
 
   describe 'original created datetime validation' do
+    it 'allows unrelated updates on persisted posts with second-bearing datetimes' do
+      post = described_class.create!(title: 'title', url: 'https://example.com/post')
+      post.update_columns(
+        original_created_from: Time.zone.parse('2024-01-01T12:34:30Z'),
+        original_created_before: Time.zone.parse('2024-01-01T12:35:30Z')
+      )
+
+      post.title = 'updated title'
+
+      expect(post).to be_valid
+      expect { post.save! }.not_to raise_error
+    end
+
+    it 'rejects second-bearing updates when the datetime field changes' do
+      post = described_class.create!(title: 'title', url: 'https://example.com/post')
+
+      post.original_created_from = '2024-01-01T12:34:30Z'
+
+      expect(post).to be_invalid
+      expect(post.errors[:original_created_from]).to eq(
+        [described_class::ORIGINAL_CREATED_MINUTE_PRECISION_MESSAGE]
+      )
+    end
+
+    it 'accepts fixing persisted datetimes to minute precision' do
+      post = described_class.create!(title: 'title', url: 'https://example.com/post')
+      post.update_columns(
+        original_created_from: Time.zone.parse('2024-01-01T12:34:30Z'),
+        original_created_before: Time.zone.parse('2024-01-01T12:35:30Z')
+      )
+
+      post.original_created_from = '2024-01-01T12:34Z'
+      post.original_created_before = '2024-01-01T12:35Z'
+
+      expect(post).to be_valid
+      expect { post.save! }.not_to raise_error
+    end
+
     it 'adds only the minute-precision error for second precision values' do
       post = described_class.new(
         title: 'title',

backend/spec/requests/post_imports_spec.rb

@@ -109,6 +109,8 @@ RSpec.describe 'Post imports API', type: :request do
       expect(json.fetch('rows').first.fetch('validation_errors')).to include(
         'original_created_from' => ['オリジナルの作成日時は分単位で入力してください．']
       )
+      expect(json.fetch('rows').first.fetch('validation_errors'))
+          .not_to have_key('original_created_at')
     end
   end
 

backend/spec/requests/posts_spec.rb

@@ -2221,6 +2221,7 @@ RSpec.describe 'Posts API', type: :request do
       expect(json.fetch('errors')).to include(
         'original_created_from' => ['オリジナルの作成日時は分単位で入力してください．']
       )
+      expect(json.fetch('errors')).not_to have_key('original_created_at')
     end
 
     it 'rejects fractional-second original created timestamps on POST /posts' do
@@ -2237,22 +2238,23 @@ RSpec.describe 'Posts API', type: :request do
       expect(json.fetch('errors')).to include(
         'original_created_before' => ['オリジナルの作成日時は分単位で入力してください．']
       )
+      expect(json.fetch('errors')).not_to have_key('original_created_at')
     end
 
-    it 'rejects original created ranges shorter than one minute on POST /posts' do
+    it 'rejects non-increasing original created ranges on POST /posts' do
       sign_in_as(member)
 
       post '/posts', params: post_write_params(
-          title: 'too short original created range',
-          url: 'https://example.com/too-short-original-created-range',
+          title: 'non-increasing original created range',
+          url: 'https://example.com/non-increasing-original-created-range',
           tags: 'spec_tag',
           thumbnail: dummy_upload,
           original_created_from: '2020-01-01T00:00Z',
-          original_created_before: '2020-01-01T00:00:30Z')
+          original_created_before: '2020-01-01T00:00Z')
 
       expect(response).to have_http_status(:unprocessable_entity)
       expect(json.fetch('errors')).to include(
-        'original_created_at' => ['オリジナルの作成日時の範囲は1分以上必要です．']
+        'original_created_at' => ['オリジナルの作成日時の順番がをかしぃです．']
       )
     end