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;; Dependencies
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(require 'ert)
(require 'list)

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;; Tests
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(setq xs '(1 2 3 4 5))

(ert-deftest list-length ()
  (should (= 0 (list-length '())))
  (should (= 5 (list-length xs))))

(ert-deftest list-reduce ()
  (should (= 16 (list-reduce 1 (lambda (x acc) (+ x acc)) xs))))

(ert-deftest list-map ()
  (should
   (equal '(2 4 6 8 10)
          (list-map (lambda (x) (* x 2)) xs))))

(ert-deftest list-xs-distinct-by? ()
  (should
   (equal t (list-xs-distinct-by?
             (lambda (x) (plist-get x :kbd))
             '((:kbd "C-a" :name "foo")
               (:kbd "C-b" :name "foo"))))))

(ert-deftest list-dedupe-adjacent ()
  (should (equal '(1 2 3 4 3 5)
                 (list-dedupe-adjacent '(1 1 1 2 2 3 4 4 3 5 5)))))

(ert-deftest list-contains? ()
  ;; Assert returns t or nil
  (should (equal t (list-contains? 1 xs)))
  (should (equal nil (list-contains? 100 xs))))

(ert-deftest list-join ()
  (should (equal "foo-bar-baz"
                 (list-join "-" '("foo" "bar" "baz")))))

(ert-deftest list-chunk ()
  (should (equal '((1 2 3 4 5 6))
                 (list-chunk 7 '(1 2 3 4 5 6))))
  (should (equal '((1) (2) (3) (4) (5) (6))
                 (list-chunk 1 '(1 2 3 4 5 6))))
  (should (equal '((1 2 3) (4 5 6))
                 (list-chunk 3 '(1 2 3 4 5 6))))
  (should (equal '((1 2) (3 4) (5 6))
                 (list-chunk 2 '(1 2 3 4 5 6)))))

(ert-deftest list-find ()
  (should (equal 2 (list-find (lambda (x) (= 2 x)) '(1 2 3 4)))))

(ert-deftest list-all? ()
  (should (equal t (list-all? (lambda (x) (= 2 x)) nil)))
  (should (null (list-all? (lambda (x) (= 2 x)) '(1 2 3))))
  (should (equal t (list-all? (lambda (x) (= 2 x)) '(2 2 2 2)))))

(ert-deftest list-any? ()
  (should (null (list-any? (lambda (x) (= 2 x)) nil)))
  (should (equal t (list-any? (lambda (x) (= 2 x)) '(1 2 3))))
  (should (null (list-any? (lambda (x) (= 4 x)) '(1 2 3)))))