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;;; test-wttrin-fetch-raw-string.el --- Tests for wttrin-fetch-raw-string -*- lexical-binding: t; -*-
;; Copyright (C) 2025-2026 Craig Jennings
;;; Commentary:
;; Unit tests for wttrin-fetch-raw-string function.
;; Tests the public API for fetching weather data by location query.
;;; Code:
(require 'ert)
(require 'wttrin)
(require 'testutil-wttrin)
;;; Setup and Teardown
(defun test-wttrin-fetch-raw-string-setup ()
"Setup for fetch-raw-string tests."
(testutil-wttrin-setup))
(defun test-wttrin-fetch-raw-string-teardown ()
"Teardown for fetch-raw-string tests."
(testutil-wttrin-teardown))
;;; Normal Cases
(ert-deftest test-wttrin-fetch-raw-string-normal-builds-correct-url ()
"The fetch should use a properly constructed wttr.in URL for the query."
(test-wttrin-fetch-raw-string-setup)
(unwind-protect
(let ((fetched-url nil))
(cl-letf (((symbol-function 'wttrin--fetch-url)
(lambda (url _callback) (setq fetched-url url))))
(wttrin-fetch-raw-string "Paris" #'ignore)
;; URL should contain wttr.in and the encoded location
(should (string-match-p "wttr\\.in" fetched-url))
(should (string-match-p "Paris" fetched-url))))
(test-wttrin-fetch-raw-string-teardown)))
(ert-deftest test-wttrin-fetch-raw-string-normal-passes-callback-through ()
"The user's callback should receive the fetched data."
(test-wttrin-fetch-raw-string-setup)
(unwind-protect
(let ((received-data nil))
(cl-letf (((symbol-function 'wttrin--fetch-url)
(lambda (_url callback)
(funcall callback "weather response"))))
(wttrin-fetch-raw-string "Paris"
(lambda (data &optional _error-msg) (setq received-data data)))
(should (equal received-data "weather response"))))
(test-wttrin-fetch-raw-string-teardown)))
;;; Error Cases
(ert-deftest test-wttrin-fetch-raw-string-error-nil-query-signals-error ()
"Passing nil as query should signal an error (invalid URL construction)."
(test-wttrin-fetch-raw-string-setup)
(unwind-protect
(should-error (wttrin-fetch-raw-string nil #'ignore)
:type 'error)
(test-wttrin-fetch-raw-string-teardown)))
(provide 'test-wttrin-fetch-raw-string)
;;; test-wttrin-fetch-raw-string.el ends here
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