;;; comp-tests.el --- Tests for comp.el  -*- lexical-binding:t -*-

;; Copyright (C) 2022 Free Software Foundation, Inc.

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;;; Commentary:

;;; Code:

(require 'ert)
(require 'ert-x)
(require 'comp)

(defvar comp-native-version-dir)
(defvar native-comp-eln-load-path)

(defmacro with-test-native-compile-prune-cache (&rest body)
  (declare (indent 0) (debug t))
  `(ert-with-temp-directory testdir
     (setq testdir (expand-file-name "eln-cache" testdir))
     (make-directory testdir)
     (let* ((c1 (expand-file-name "29.0.50-cur" testdir))
            (c2 (expand-file-name "29.0.50-old" testdir))
            (native-comp-eln-load-path (list testdir))
            (comp-native-version-dir "29.0.50-cur"))
       (dolist (d (list c1 c2))
         (make-directory d)
         (with-temp-file (expand-file-name "some.eln" d) (insert "foo"))
         (with-temp-file (expand-file-name "some.eln.tmp" d) (insert "foo")))
       ,@body)))

(ert-deftest test-native-compile-prune-cache ()
  (skip-unless (featurep 'native-compile))
  (with-test-native-compile-prune-cache
    (native-compile-prune-cache)
    (should (file-directory-p c1))
    (should (file-regular-p (expand-file-name "some.eln" c1)))
    (should (file-regular-p (expand-file-name "some.eln.tmp" c1)))
    (should-not (file-directory-p c2))
    (should-not (file-regular-p (expand-file-name "some.eln" c2)))
    (should-not (file-regular-p (expand-file-name "some.eln.tmp" c2)))))

(ert-deftest test-native-compile-prune-cache/delete-only-eln ()
  (skip-unless (featurep 'native-compile))
  (with-test-native-compile-prune-cache
    (with-temp-file (expand-file-name "keep1.txt" c1) (insert "foo"))
    (with-temp-file (expand-file-name "keep2.txt" c2) (insert "foo"))
    (native-compile-prune-cache)
    (should (file-regular-p (expand-file-name "keep1.txt" c1)))
    (should (file-regular-p (expand-file-name "keep2.txt" c2)))))

(ert-deftest test-native-compile-prune-cache/dont-delete-in-parent-of-cache ()
  (skip-unless (featurep 'native-compile))
  (with-test-native-compile-prune-cache
    (let ((f1 (expand-file-name "../some.eln" testdir))
          (f2 (expand-file-name "some.eln" testdir)))
      (with-temp-file f1 (insert "foo"))
      (with-temp-file f2 (insert "foo"))
      (native-compile-prune-cache)
      (should (file-regular-p f1))
      (should (file-regular-p f2)))))

;;; comp-tests.el ends here