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;;; test-wttrin-additional-url-params.el --- Tests for wttrin-additional-url-params -*- lexical-binding: t; -*-
;; Copyright (C) 2024 Craig Jennings
;;; Commentary:
;; Unit tests for wttrin-additional-url-params function.
;; Tests URL parameter generation based on unit system configuration.
;;; Code:
(require 'ert)
(require 'wttrin)
;;; Normal Cases
(ert-deftest test-wttrin-additional-url-params-normal-metric-system ()
"Test URL params with metric unit system."
(let ((wttrin-unit-system "m"))
(should (string= "?m" (wttrin-additional-url-params)))))
(ert-deftest test-wttrin-additional-url-params-normal-uscs-system ()
"Test URL params with USCS (imperial) unit system."
(let ((wttrin-unit-system "u"))
(should (string= "?u" (wttrin-additional-url-params)))))
(ert-deftest test-wttrin-additional-url-params-normal-wind-speed-meters ()
"Test URL params with wind speed in m/s."
(let ((wttrin-unit-system "M"))
(should (string= "?M" (wttrin-additional-url-params)))))
;;; Boundary Cases
(ert-deftest test-wttrin-additional-url-params-boundary-nil-returns-question-mark ()
"Test URL params when unit system is nil (default/location-based)."
(let ((wttrin-unit-system nil))
(should (string= "?" (wttrin-additional-url-params)))))
(ert-deftest test-wttrin-additional-url-params-boundary-empty-string ()
"Test URL params with empty string unit system."
(let ((wttrin-unit-system ""))
(should (string= "?" (wttrin-additional-url-params)))))
;;; Error Cases
(ert-deftest test-wttrin-additional-url-params-error-unbound-variable ()
"Test behavior when wttrin-unit-system is unbound (should use default nil)."
;; This test verifies the defcustom default value
(let ((wttrin-unit-system nil)) ; Simulate default value
(should (string= "?" (wttrin-additional-url-params)))))
(provide 'test-wttrin-additional-url-params)
;;; test-wttrin-additional-url-params.el ends here
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