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Sami Samhuri
97105c1501
Add Pressa::OpenGraph, a best-effort scraper that pulls og:image (falling back to twitter:image) from a linked page's HTML. bake new_link and bake preview_link now use it to prefill the Image front-matter field for link posts, unless the payload already supplies one. Network failures and missing tags just resolve to nil so creating a post never blocks on a slow or broken link; the fetch happens once at draft-creation time, not on every build.
61 lines
2.3 KiB
Ruby
61 lines
2.3 KiB
Ruby
require "test_helper"
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require "pressa/open_graph"
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class Pressa::OpenGraphTest < Minitest::Test
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def test_extract_returns_og_image_resolved_against_base_url
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html = <<~HTML
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<html><head>
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<meta property="og:image" content="/images/cover.png">
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</head></html>
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HTML
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result = Pressa::OpenGraph.extract(html, base_url: "https://example.net/posts/cool-thing")
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assert_equal("https://example.net/images/cover.png", result.image)
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end
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def test_extract_preserves_absolute_image_urls
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html = %(<meta property="og:image" content="https://cdn.example.net/cover.png">)
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result = Pressa::OpenGraph.extract(html, base_url: "https://example.net/posts/cool-thing")
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assert_equal("https://cdn.example.net/cover.png", result.image)
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end
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def test_extract_falls_back_to_twitter_image
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html = %(<meta name="twitter:image" content="https://cdn.example.net/tw.png">)
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result = Pressa::OpenGraph.extract(html, base_url: "https://example.net/posts/cool-thing")
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assert_equal("https://cdn.example.net/tw.png", result.image)
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end
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def test_extract_returns_nil_when_no_image_meta_present
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html = "<html><head><title>No image here</title></head></html>"
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refute(Pressa::OpenGraph.extract(html, base_url: "https://example.net"))
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end
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def test_extract_handles_single_quoted_attributes
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html = %(<meta property='og:image' content='https://cdn.example.net/single.png'>)
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result = Pressa::OpenGraph.extract(html, base_url: "https://example.net")
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assert_equal("https://cdn.example.net/single.png", result.image)
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end
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def test_fetch_uses_injected_http_get_and_extracts_image
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html = %(<meta property="og:image" content="https://cdn.example.net/x.png">)
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result = Pressa::OpenGraph.fetch("https://example.net/post", http_get: ->(_url) { html })
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assert_equal("https://cdn.example.net/x.png", result.image)
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end
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def test_fetch_returns_nil_when_http_get_returns_nil
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result = Pressa::OpenGraph.fetch("https://example.net/post", http_get: ->(_url) {})
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assert_nil(result)
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end
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def test_fetch_returns_nil_instead_of_raising_on_network_errors
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failing_get = ->(_url) { raise Net::OpenTimeout, "timed out" }
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result = Pressa::OpenGraph.fetch("https://example.net/post", http_get: failing_get)
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assert_nil(result)
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end
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end
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