require 'rails_helper'
RSpec.describe PostMetadataFetcher do
Response = Struct.new(:body)
def fetch_with_published_time(value, url: 'https://example.com/video')
html = <<~HTML
HTML
uri = URI.parse(url)
allow(Preview::UrlSafety).to receive(:validate).with(url).and_return([uri, ['8.8.8.8']])
allow(Preview::HttpFetcher).to receive(:fetch).and_return(Response.new(html))
allow(Preview::HtmlMetadataExtractor).to receive(:extract)
.and_return(title: 'title', image_url: nil)
described_class.fetch(url)
end
it 'builds ranges explicitly for year, month, and day precision' do
year = fetch_with_published_time('2024')
month = fetch_with_published_time('2024-02')
day = fetch_with_published_time('2024-02-03')
expect(year).to include(
original_created_from: Time.zone.local(2024, 1, 1).iso8601,
original_created_before: Time.zone.local(2025, 1, 1).iso8601
)
expect(month).to include(
original_created_from: Time.zone.local(2024, 2, 1).iso8601,
original_created_before: Time.zone.local(2024, 3, 1).iso8601
)
expect(day).to include(
original_created_from: Time.zone.local(2024, 2, 3).iso8601,
original_created_before: Time.zone.local(2024, 2, 4).iso8601
)
end
it 'rounds second and fractional-second timestamps down to one-minute ranges' do
result = fetch_with_published_time('2024-02-03T12:34:56.123+02:30')
expect(Time.iso8601(result.fetch(:original_created_from)))
.to eq(Time.iso8601('2024-02-03T12:34:00+02:30'))
expect(
Time.iso8601(result.fetch(:original_created_before)) -
Time.iso8601(result.fetch(:original_created_from))
).to eq(60)
expect(result.fetch(:original_created_from)).not_to include('.')
end
it 'treats hour-precision timestamps as one-hour ranges with and without offsets' do
offset_result = fetch_with_published_time('2024-02-03T12+02:30')
local_result = fetch_with_published_time('2024-02-03T12')
expect(Time.iso8601(offset_result.fetch(:original_created_from)))
.to eq(Time.iso8601('2024-02-03T12:00:00+02:30'))
expect(
Time.iso8601(offset_result.fetch(:original_created_before)) -
Time.iso8601(offset_result.fetch(:original_created_from))
).to eq(3600)
expect(local_result.fetch(:original_created_from)).to eq('2024-02-03T12:00:00Z')
expect(local_result.fetch(:original_created_before)).to eq('2024-02-03T13:00:00Z')
end
it 'adds platform tags for known video URLs' do
result = fetch_with_published_time('2024', url: 'https://youtu.be/abc123')
expect(result.fetch(:tags)).to eq('動画 YouTube')
end
it 'returns nil dates for an invalid timestamp' do
result = fetch_with_published_time('not-a-time')
expect(result.fetch(:original_created_from)).to be_nil
expect(result.fetch(:original_created_before)).to be_nil
end
it 'returns nil dates for an invalid timestamp second value' do
result = fetch_with_published_time('2024-02-03T12:34:99Z')
expect(result.fetch(:original_created_from)).to be_nil
expect(result.fetch(:original_created_before)).to be_nil
end
it 'returns nil dates for invalid calendar dates and invalid hour values' do
invalid_day = fetch_with_published_time('2024-02-31T12:00Z')
invalid_leap = fetch_with_published_time('2023-02-29T12:00Z')
invalid_hour = fetch_with_published_time('2024-02-29T24:00Z')
[invalid_day, invalid_leap, invalid_hour].each do |result|
expect(result.fetch(:original_created_from)).to be_nil
expect(result.fetch(:original_created_before)).to be_nil
end
end
it 'accepts a valid leap-day timestamp at minute precision' do
result = fetch_with_published_time('2024-02-29T12:34Z')
expect(result.fetch(:original_created_from)).to eq('2024-02-29T12:34:00Z')
expect(result.fetch(:original_created_before)).to eq('2024-02-29T12:35:00Z')
end
it 'serialises metadata duration as the same seconds string contract used by forms' do
html = <<~HTML
HTML
uri = URI.parse('https://example.com/video')
allow(Preview::UrlSafety).to receive(:validate)
.with('https://example.com/video')
.and_return([uri, ['8.8.8.8']])
allow(Preview::HttpFetcher).to receive(:fetch).and_return(Response.new(html))
allow(Preview::HtmlMetadataExtractor).to receive(:extract)
.and_return(title: 'title', image_url: nil)
result = described_class.fetch('https://example.com/video')
expect(result.fetch(:duration)).to eq('2.5')
end
end