require "test_helper"
class Opengraph::MetadataTest < ActiveSupport::TestCase
test "successful fetch" do
body = <<~HTML
HTML
WebMock.stub_request(:get, "https://www.example.com/").to_return(status: 200, body: body, headers: { content_type: "text/html" })
WebMock.stub_request(:head, "https://example.com/image.png").to_return(status: 200, headers: { content_type: "image/png" })
metadata = Opengraph::Metadata.from_url("https://www.example.com")
assert metadata.valid?
assert_equal "https://example.com", metadata.url
assert_equal "Hey!", metadata.title
assert_equal "Hello", metadata.description
assert_equal "https://example.com/image.png", metadata.image
end
test "missing opengraph meta tags" do
WebMock.stub_request(:get, "https://www.example.com/").to_return(status: 200, body: "", headers: { content_type: "text/html" })
opengraph = Opengraph::Metadata.from_url("https://www.example.com")
assert_not opengraph.valid?
assert_equal [ "Title can't be blank", "Description can't be blank" ], opengraph.errors.full_messages
end
test "URL uses the provided value if the returned value is missing" do
body = <<~HTML
HTML
WebMock.stub_request(:get, "https://www.example.com/").to_return(status: 200, body: body, headers: { content_type: "text/html" })
WebMock.stub_request(:head, "https://example.com/image.png").to_return(status: 200, headers: { content_type: "image/png" })
metadata = Opengraph::Metadata.from_url("https://www.example.com")
assert metadata.valid?
assert_equal "https://www.example.com", metadata.url
end
test "URL uses the provided value if the returned value is invalid" do
body = <<~HTML
HTML
WebMock.stub_request(:get, "https://www.example.com/foo").to_return(status: 200, body: body, headers: { content_type: "text/html" })
WebMock.stub_request(:head, "https://example.com/image.png").to_return(status: 200, headers: { content_type: "image/png" })
metadata = Opengraph::Metadata.from_url("https://www.example.com/foo")
assert metadata.valid?
assert_equal "https://www.example.com/foo", metadata.url
end
test "missing response body" do
WebMock.stub_request(:get, "https://www.example.com/").to_return(status: 403, body: "", headers: { content_type: "text/html" })
assert_not Opengraph::Metadata.from_url("https://www.example.com").valid?
end
test "non html response" do
WebMock.stub_request(:get, "https://www.example.com/image").to_return(status: 200, body: "[blob]", headers: { content_type: "image/jpeg" })
assert_not Opengraph::Metadata.from_url("https://www.example.com/image").valid?
end
test "relative and invalid image URLs are ignored" do
body = <<~HTML
HTML
[ "/image.png", "foo", "https/incorrect", "~/etc/password" ].each do |invalid_image_url|
WebMock.stub_request(:get, "https://www.example.com/").to_return(status: 200, body: body % invalid_image_url, headers: { content_type: "text/html" })
opengraph = Opengraph::Metadata.from_url("https://www.example.com")
assert opengraph.valid?
assert_nil opengraph.image
end
end
test "sanitize title and description" do
body = <<~HTML
HTML
WebMock.stub_request(:get, "https://www.example.com/").to_return(status: 200, body: body, headers: { content_type: "text/html" })
WebMock.stub_request(:head, "https://example.com/image.png").to_return(status: 200, headers: { content_type: "image/png" })
metadata = Opengraph::Metadata.from_url("https://www.example.com")
assert metadata.valid?
assert_equal "Hey!alert('hi')", metadata.title
assert_equal "Helloalert('hi')", metadata.description
end
test "remove encoded tags from title and description" do
body = <<~HTML
HTML
WebMock.stub_request(:get, "https://www.example.com/").to_return(status: 200, body: body, headers: { content_type: "text/html" })
WebMock.stub_request(:head, "https://example.com/image.png").to_return(status: 200, headers: { content_type: "image/png" })
metadata = Opengraph::Metadata.from_url("https://www.example.com")
assert metadata.valid?
assert_equal "Hey!", metadata.title
assert_equal "Hello", metadata.description
end
test "does not allow SVG content type for preview image" do
body = <<~HTML
HTML
WebMock.stub_request(:get, "https://www.example.com/").to_return(status: 200, body: body, headers: { content_type: "text/html" })
WebMock.stub_request(:head, "https://example.com/image.svg").to_return(status: 200, headers: { content_type: "image/svg+xml" })
metadata = Opengraph::Metadata.from_url("https://www.example.com")
assert metadata.valid?
assert_nil metadata.image
end
end