162 lines
		
	
	
		
			4.7 KiB
		
	
	
	
		
			Ruby
		
	
	
	
			
		
		
	
	
			162 lines
		
	
	
		
			4.7 KiB
		
	
	
	
		
			Ruby
		
	
	
	
# frozen_string_literal: true
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require 'rails_helper'
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RSpec.describe LinkDetailsExtractor do
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  subject { described_class.new(original_url, html, html_charset) }
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  let(:original_url) { '' }
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  let(:html) { '' }
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  let(:html_charset) { nil }
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  describe '#canonical_url' do
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    let(:original_url) { 'https://foo.com/article?bar=baz123' }
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    context 'when canonical URL points to another host' do
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      let(:html) { '<!doctype html><link rel="canonical" href="https://bar.com/different-article" />' }
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      it 'ignores the canonical URLs' do
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        expect(subject.canonical_url).to eq original_url
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      end
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    end
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    context 'when canonical URL points to the same host' do
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      let(:html) { '<!doctype html><link rel="canonical" href="https://foo.com/article" />' }
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      it 'ignores the canonical URLs' do
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        expect(subject.canonical_url).to eq 'https://foo.com/article'
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      end
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    end
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    context 'when canonical URL is set to "null"' do
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      let(:html) { '<!doctype html><link rel="canonical" href="null" />' }
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      it 'ignores the canonical URLs' do
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        expect(subject.canonical_url).to eq original_url
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      end
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    end
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  end
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  context 'when structured data is present' do
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    let(:original_url) { 'https://example.com/page.html' }
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    context 'and is wrapped in CDATA tags' do
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      let(:html) { <<~HTML }
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        <!doctype html>
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        <html>
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        <head>
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          <script type="application/ld+json">
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          //<![CDATA[
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          {"@context":"http://schema.org","@type":"NewsArticle","mainEntityOfPage":"https://example.com/page.html","headline":"Foo","datePublished":"2022-01-31T19:53:00+00:00","url":"https://example.com/page.html","description":"Bar","author":{"@type":"Person","name":"Hoge"},"publisher":{"@type":"Organization","name":"Baz"}}
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          //]]>
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          </script>
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        </head>
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        </html>
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      HTML
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      describe '#title' do
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        it 'returns the title from structured data' do
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          expect(subject.title).to eq 'Foo'
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        end
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      end
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      describe '#description' do
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        it 'returns the description from structured data' do
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          expect(subject.description).to eq 'Bar'
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        end
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      end
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      describe '#provider_name' do
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        it 'returns the provider name from structured data' do
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          expect(subject.provider_name).to eq 'Baz'
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        end
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      end
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      describe '#author_name' do
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        it 'returns the author name from structured data' do
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          expect(subject.author_name).to eq 'Hoge'
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        end
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      end
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    end
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    context 'but the first tag is invalid JSON' do
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      let(:html) { <<~HTML }
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        <!doctype html>
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        <html>
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        <body>
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          <script type="application/ld+json">
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            {
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              "@context":"https://schema.org",
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              "@type":"ItemList",
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              "url":"https://example.com/page.html",
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              "name":"Foo",
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              "description":"Bar"
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            },
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            {
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              "@context": "https://schema.org",
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              "@type": "BreadcrumbList",
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              "itemListElement":[
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                {
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                  "@type":"ListItem",
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                  "position":1,
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                  "item":{
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                    "@id":"https://www.example.com",
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                    "name":"Baz"
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                  }
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                }
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              ]
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            }
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          </script>
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          <script type="application/ld+json">
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            {
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              "@context":"https://schema.org",
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              "@type":"NewsArticle",
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              "mainEntityOfPage": {
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                "@type":"WebPage",
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                "@id": "http://example.com/page.html"
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              },
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              "headline": "Foo",
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              "description": "Bar",
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              "datePublished": "2022-01-31T19:46:00+00:00",
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              "author": {
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                "@type": "Organization",
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                "name": "Hoge"
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              },
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              "publisher": {
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                "@type": "NewsMediaOrganization",
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                "name":"Baz",
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                "url":"https://example.com/"
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              }
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            }
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          </script>
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        </body>
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        </html>
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      HTML
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      describe '#title' do
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        it 'returns the title from structured data' do
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          expect(subject.title).to eq 'Foo'
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        end
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      end
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      describe '#description' do
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        it 'returns the description from structured data' do
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          expect(subject.description).to eq 'Bar'
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        end
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      end
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      describe '#provider_name' do
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        it 'returns the provider name from structured data' do
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          expect(subject.provider_name).to eq 'Baz'
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        end
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      end
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      describe '#author_name' do
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        it 'returns the author name from structured data' do
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          expect(subject.author_name).to eq 'Hoge'
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        end
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      end
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    end
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  end
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end
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