2020-08-08 07:16:06 +05:30
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# frozen_string_literal: true
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require "livecheck/strategy"
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2024-02-18 15:11:11 -08:00
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RSpec.describe Homebrew::Livecheck::Strategy do
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2020-08-08 07:16:06 +05:30
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subject(:strategy) { described_class }
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2025-02-04 10:30:16 -05:00
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let(:url) { "https://brew.sh/" }
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let(:redirection_url) { "https://brew.sh/redirection" }
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let(:post_hash) do
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{
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"empty" => "",
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"boolean" => "true",
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"number" => "1",
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"string" => "a + b = c",
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}
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end
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let(:post_hash_symbol_keys) do
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{
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empty: "",
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boolean: "true",
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number: "1",
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string: "a + b = c",
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}
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end
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let(:form_string) { "empty=&boolean=true&number=1&string=a+%2B+b+%3D+c" }
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let(:json_string) { '{"empty":"","boolean":"true","number":"1","string":"a + b = c"}' }
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let(:response_hash) do
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response_hash = {}
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response_hash[:ok] = {
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status_code: "200",
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status_text: "OK",
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headers: {
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"cache-control" => "max-age=604800",
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"content-type" => "text/html; charset=UTF-8",
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"date" => "Wed, 1 Jan 2020 01:23:45 GMT",
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"expires" => "Wed, 31 Jan 2020 01:23:45 GMT",
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"last-modified" => "Thu, 1 Jan 2019 01:23:45 GMT",
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"content-length" => "123",
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},
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}
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response_hash[:redirection] = {
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status_code: "301",
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status_text: "Moved Permanently",
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headers: {
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"cache-control" => "max-age=604800",
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"content-type" => "text/html; charset=UTF-8",
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"date" => "Wed, 1 Jan 2020 01:23:45 GMT",
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"expires" => "Wed, 31 Jan 2020 01:23:45 GMT",
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"last-modified" => "Thu, 1 Jan 2019 01:23:45 GMT",
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"content-length" => "123",
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"location" => redirection_url,
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},
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}
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response_hash
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end
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let(:body) do
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<<~HTML
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Thank you!</title>
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</head>
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<body>
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<h1>Download</h1>
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<p>This download link could have been made publicly available in a reasonable fashion but we appreciate that you jumped through the hoops that we carefully set up!: <a href="https://brew.sh/example-1.2.3.tar.gz">Example v1.2.3</a></p>
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<p>The current legacy version is: <a href="https://brew.sh/example-0.1.2.tar.gz">Example v0.1.2</a></p>
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</body>
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</html>
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HTML
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end
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let(:response_text) do
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response_text = {}
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response_text[:ok] = <<~EOS
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HTTP/1.1 #{response_hash[:ok][:status_code]} #{response_hash[:ok][:status_text]}\r
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Cache-Control: #{response_hash[:ok][:headers]["cache-control"]}\r
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Content-Type: #{response_hash[:ok][:headers]["content-type"]}\r
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Date: #{response_hash[:ok][:headers]["date"]}\r
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Expires: #{response_hash[:ok][:headers]["expires"]}\r
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Last-Modified: #{response_hash[:ok][:headers]["last-modified"]}\r
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Content-Length: #{response_hash[:ok][:headers]["content-length"]}\r
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\r
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#{body.rstrip}
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EOS
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response_text[:redirection_to_ok] = response_text[:ok].sub(
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"HTTP/1.1 #{response_hash[:ok][:status_code]} #{response_hash[:ok][:status_text]}\r",
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"HTTP/1.1 #{response_hash[:redirection][:status_code]} #{response_hash[:redirection][:status_text]}\r\n" \
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"Location: #{response_hash[:redirection][:headers]["location"]}\r",
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)
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response_text
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end
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2020-08-08 07:16:06 +05:30
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describe "::from_symbol" do
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it "returns the Strategy module represented by the Symbol argument" do
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expect(strategy.from_symbol(:page_match)).to eq(Homebrew::Livecheck::Strategy::PageMatch)
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end
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2025-02-04 15:48:59 -05:00
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it "returns `nil` if the argument is `nil`" do
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expect(strategy.from_symbol(nil)).to be_nil
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end
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2020-08-08 07:16:06 +05:30
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end
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describe "::from_url" do
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2025-02-04 15:48:59 -05:00
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let(:sourceforge_url) { "https://sourceforge.net/projects/test" }
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2020-08-08 07:16:06 +05:30
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2025-02-04 15:48:59 -05:00
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context "when a regex or `strategy` block is not provided" do
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2020-08-08 07:16:06 +05:30
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it "returns an array of usable strategies which doesn't include PageMatch" do
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2025-02-04 15:48:59 -05:00
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expect(strategy.from_url(sourceforge_url)).to eq([Homebrew::Livecheck::Strategy::Sourceforge])
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2020-08-08 07:16:06 +05:30
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end
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end
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2025-02-04 15:48:59 -05:00
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context "when a regex or `strategy` block is provided" do
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2020-08-08 07:16:06 +05:30
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it "returns an array of usable strategies including PageMatch, sorted in descending order by priority" do
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2025-02-04 15:48:59 -05:00
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expect(strategy.from_url(sourceforge_url, regex_provided: true))
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2020-08-08 07:16:06 +05:30
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.to eq(
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[Homebrew::Livecheck::Strategy::Sourceforge, Homebrew::Livecheck::Strategy::PageMatch],
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)
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end
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end
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2025-02-04 15:48:59 -05:00
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context "when a `strategy` block is required and one is provided" do
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it "returns an array of usable strategies including the specified strategy" do
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# The strategies array is naturally in alphabetic order when all
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# applicable strategies have the same priority
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expect(strategy.from_url(url, livecheck_strategy: :json, block_provided: true))
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.to eq([Homebrew::Livecheck::Strategy::Json, Homebrew::Livecheck::Strategy::PageMatch])
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expect(strategy.from_url(url, livecheck_strategy: :xml, block_provided: true))
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.to eq([Homebrew::Livecheck::Strategy::PageMatch, Homebrew::Livecheck::Strategy::Xml])
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expect(strategy.from_url(url, livecheck_strategy: :yaml, block_provided: true))
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.to eq([Homebrew::Livecheck::Strategy::PageMatch, Homebrew::Livecheck::Strategy::Yaml])
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end
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end
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context "when a `strategy` block is required and one is not provided" do
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it "returns an array of usable strategies not including the specified strategy" do
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expect(strategy.from_url(url, livecheck_strategy: :json, block_provided: false)).to eq([])
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expect(strategy.from_url(url, livecheck_strategy: :xml, block_provided: false)).to eq([])
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expect(strategy.from_url(url, livecheck_strategy: :yaml, block_provided: false)).to eq([])
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end
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end
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2020-08-08 07:16:06 +05:30
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end
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2021-08-10 11:09:55 -04:00
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2025-02-04 10:30:16 -05:00
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describe "::post_args" do
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it "returns an array including `--data` and an encoded form data string" do
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expect(strategy.post_args(post_form: post_hash)).to eq(["--data", form_string])
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expect(strategy.post_args(post_form: post_hash_symbol_keys)).to eq(["--data", form_string])
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# If both `post_form` and `post_json` are present, only `post_form` will
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# be used.
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expect(strategy.post_args(post_form: post_hash, post_json: post_hash)).to eq(["--data", form_string])
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end
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it "returns an array including `--json` and a JSON string" do
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expect(strategy.post_args(post_json: post_hash)).to eq(["--json", json_string])
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expect(strategy.post_args(post_json: post_hash_symbol_keys)).to eq(["--json", json_string])
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end
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it "returns an empty array if `post_form` value is blank" do
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expect(strategy.post_args(post_form: {})).to eq([])
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end
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it "returns an empty array if `post_json` value is blank" do
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expect(strategy.post_args(post_json: {})).to eq([])
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end
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it "returns an empty array if hash argument doesn't have a `post_form` or `post_json` value" do
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expect(strategy.post_args).to eq([])
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end
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end
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describe "::page_headers" do
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let(:responses) { [response_hash[:ok]] }
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it "returns headers from fetched content" do
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allow(strategy).to receive(:curl_headers).and_return({ responses:, body: })
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expect(strategy.page_headers(url)).to eq([responses.first[:headers]])
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end
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it "handles `post_form` `url` options" do
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allow(strategy).to receive(:curl_headers).and_return({ responses:, body: })
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expect(strategy.page_headers(url, url_options: { post_form: post_hash }))
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.to eq([responses.first[:headers]])
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end
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it "returns an empty array if `curl_headers` only raises an `ErrorDuringExecution` error" do
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allow(strategy).to receive(:curl_headers).and_raise(ErrorDuringExecution.new([], status: 1))
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expect(strategy.page_headers(url)).to eq([])
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end
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end
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describe "::page_content" do
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let(:curl_version) { Version.new("8.7.1") }
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let(:success_status) { instance_double(Process::Status, success?: true, exitstatus: 0) }
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it "returns hash including fetched content" do
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allow_any_instance_of(Utils::Curl).to receive(:curl_version).and_return(curl_version)
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allow(strategy).to receive(:curl_output).and_return([response_text[:ok], nil, success_status])
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expect(strategy.page_content(url)).to eq({ content: body })
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end
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it "handles `post_form` `url` option" do
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allow_any_instance_of(Utils::Curl).to receive(:curl_version).and_return(curl_version)
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allow(strategy).to receive(:curl_output).and_return([response_text[:ok], nil, success_status])
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expect(strategy.page_content(url, url_options: { post_form: post_hash })).to eq({ content: body })
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end
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it "handles `post_json` `url` option" do
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allow_any_instance_of(Utils::Curl).to receive(:curl_version).and_return(curl_version)
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allow(strategy).to receive(:curl_output).and_return([response_text[:ok], nil, success_status])
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expect(strategy.page_content(url, url_options: { post_json: post_hash })).to eq({ content: body })
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end
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it "returns error `messages` from `stderr` in the return hash on failure when `stderr` is not `nil`" do
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error_message = "curl: (6) Could not resolve host: brew.sh"
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allow_any_instance_of(Utils::Curl).to receive(:curl_version).and_return(curl_version)
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allow(strategy).to receive(:curl_output).and_return([
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nil,
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error_message,
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instance_double(Process::Status, success?: false, exitstatus: 6),
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])
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expect(strategy.page_content(url)).to eq({ messages: [error_message] })
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end
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it "returns default error `messages` in the return hash on failure when `stderr` is `nil`" do
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allow_any_instance_of(Utils::Curl).to receive(:curl_version).and_return(curl_version)
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allow(strategy).to receive(:curl_output).and_return([
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nil,
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nil,
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instance_double(Process::Status, success?: false, exitstatus: 1),
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])
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expect(strategy.page_content(url)).to eq({ messages: ["cURL failed without a detectable error"] })
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end
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it "returns hash including `final_url` if it differs from initial `url`" do
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allow_any_instance_of(Utils::Curl).to receive(:curl_version).and_return(curl_version)
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allow(strategy).to receive(:curl_output).and_return([response_text[:redirection_to_ok], nil, success_status])
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expect(strategy.page_content(url)).to eq({ content: body, final_url: redirection_url })
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end
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end
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2021-08-10 11:09:55 -04:00
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describe "::handle_block_return" do
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it "returns an array of version strings when given a valid value" do
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expect(strategy.handle_block_return("1.2.3")).to eq(["1.2.3"])
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expect(strategy.handle_block_return(["1.2.3", "1.2.4"])).to eq(["1.2.3", "1.2.4"])
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end
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it "returns an empty array when given a nil value" do
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expect(strategy.handle_block_return(nil)).to eq([])
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end
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it "errors when given an invalid value" do
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expect { strategy.handle_block_return(123) }
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.to raise_error(TypeError, strategy::INVALID_BLOCK_RETURN_VALUE_MSG)
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end
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end
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2020-08-08 07:16:06 +05:30
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end
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