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;;; mastodon-client-test.el --- Tests for mastodon-client.el  -*- lexical-binding: nil -*-

(require 'el-mock)

(ert-deftest mastodon-client--register ()
  "Should POST to /apps."
  (with-mock
    (mock (mastodon-http--api "apps") => "https://instance.url/api/v1/apps")
    (mock (mastodon-http--post "https://instance.url/api/v1/apps"
                               '(("client_name" . "mastodon.el")
                                 ("redirect_uris" . "urn:ietf:wg:oauth:2.0:oob")
                                 ("scopes" . "read write follow")
                                 ("website" . "https://codeberg.org/martianh/mastodon.el"))
                               nil
                               :unauthenticated))
    (mastodon-client--register)))

(ert-deftest mastodon-client--fetch ()
  "Should return client registration JSON."
  (with-temp-buffer
    (with-mock
      (mock (mastodon-client--register) => (progn
                                             (insert "\n\n{\"foo\":\"bar\"}")
                                             (current-buffer)))
      (should (equal (mastodon-client--fetch) '(:foo "bar"))))))

(ert-deftest mastodon-client--store ()
  "Test the value `mastodon-client--store' returns/stores."
  (let ((mastodon-instance-url "http://mastodon.example")
        (plist '(:client_id "id" :client_secret "secret")))
    (with-mock
      (mock (mastodon-client--token-file) => "stubfile.plstore")
      (mock (mastodon-client--fetch) => plist)
      (should (equal (mastodon-client--store) plist)))
    (let* ((plstore (plstore-open "stubfile.plstore"))
           (client (mastodon-client--remove-key-from-plstore
                    (plstore-get plstore "mastodon-http://mastodon.example"))))
      (plstore-close plstore)
      (should (equal client plist))
      ;; clean up - delete the stubfile
      (delete-file "stubfile.plstore"))))


(ert-deftest mastodon-client--read-finds-match ()
  "Should return mastodon client from `mastodon-token-file' if it exists."
  (let ((mastodon-instance-url "http://mastodon.example"))
    (with-mock
      (mock (mastodon-client--token-file) => "fixture/client.plstore")
      (should (equal (mastodon-client--read)
                     '(:client_id "id2" :client_secret "secret2"))))))

(ert-deftest mastodon-client--general-read-finds-match ()
  (with-mock
    (mock (mastodon-client--token-file) => "fixture/client.plstore")
    (should (equal (mastodon-client--general-read "user-test8000@mastodon.example")
                   '(:username "test8000@mastodon.example"
                               :instance "http://mastodon.example"
                               :client_id "id2" :client_secret "secret2"
                               :access_token "token2")))))

(ert-deftest mastodon-client--general-read-finds-no-match ()
  (with-mock
    (mock (mastodon-client--token-file) => "fixture/client.plstore")
    (should (equal (mastodon-client--general-read "nonexistant-key")
                   nil))))

(ert-deftest mastodon-client--general-read-empty-store ()
  (with-mock
    (mock (mastodon-client--token-file) => "fixture/empty.plstore")
    (should (equal (mastodon-client--general-read "something")
                   nil))))

(ert-deftest mastodon-client--read-finds-no-match ()
  "Should return mastodon client from `mastodon-token-file' if it exists."
  (let ((mastodon-instance-url "http://mastodon.social"))
    (with-mock
      (mock (mastodon-client--token-file) => "fixture/client.plstore")
      (should (equal (mastodon-client--read) nil)))))

(ert-deftest mastodon-client--read-empty-store ()
  "Should return nil if mastodon client is not present in the plstore."
  (with-mock
    (mock (mastodon-client--token-file) => "fixture/empty.plstore")
    (should (equal (mastodon-client--read) nil))))

(ert-deftest mastodon-client--client-set-and-matching ()
  "Should return `mastondon-client' if `mastodon-client--client-details-alist' is non-nil and instance url is included."
  (let ((mastodon-instance-url "http://mastodon.example")
        (mastodon-client--client-details-alist '(("https://other.example" . :no-match)
                                                 ("http://mastodon.example" . :matches))))
    (should (eq (mastodon-client) :matches))))

(ert-deftest mastodon-client--client-set-but-not-matching ()
  "Should read from `mastodon-token-file' if wrong data is cached."
  (let ((mastodon-instance-url "http://mastodon.example")
        (mastodon-client--client-details-alist '(("http://other.example" :wrong))))
    (with-mock
      (mock (mastodon-client--read) => '(:client_id "foo" :client_secret "bar"))
      (should (equal (mastodon-client) '(:client_id "foo" :client_secret "bar")))
      (should (equal mastodon-client--client-details-alist
                     '(("http://mastodon.example" :client_id "foo" :client_secret "bar")
                       ("http://other.example" :wrong)))))))

(ert-deftest mastodon-client--client-unset ()
  "Should read from `mastodon-token-file' if available."
  (let ((mastodon-instance-url "http://mastodon.example")
        (mastodon-client--client-details-alist nil))
    (with-mock
      (mock (mastodon-client--read) => '(:client_id "foo" :client_secret "bar"))
      (should (equal (mastodon-client) '(:client_id "foo" :client_secret "bar")))
      (should (equal mastodon-client--client-details-alist
                     '(("http://mastodon.example" :client_id "foo" :client_secret "bar")))))))

(ert-deftest mastodon-client--client-unset-and-not-in-storage ()
  "Should store client data in plstore if it can't be read."
  (let ((mastodon-instance-url "http://mastodon.example")
        (mastodon-client--client-details-alist nil))
    (with-mock
      (mock (mastodon-client--read))
      (mock (mastodon-client--store) => '(:client_id "foo" :client_secret "baz"))
      (should (equal (mastodon-client) '(:client_id "foo" :client_secret "baz")))
      (should (equal mastodon-client--client-details-alist
                     '(("http://mastodon.example" :client_id "foo" :client_secret "baz")))))))