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nixos/tests/guix/scripts/add-existing-files-to-store.scm

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+;; A simple script that adds each file given from the command-line into the
+;; store and checks them if it's the same.
+(use-modules (guix)
+             (srfi srfi-1)
+             (ice-9 ftw)
+             (rnrs io ports))
+
+;; This is based from tests/derivations.scm from Guix source code.
+(define* (directory-contents dir #:optional (slurp get-bytevector-all))
+         "Return an alist representing the contents of DIR"
+         (define prefix-len (string-length dir))
+         (sort (file-system-fold (const #t)
+                                 (lambda (path stat result)
+                                   (alist-cons (string-drop path prefix-len)
+                                               (call-with-input-file path slurp)
+                                               result))
+                                 (lambda (path stat result) result)
+                                 (lambda (path stat result) result)
+                                 (lambda (path stat result) result)
+                                 (lambda (path stat errno result) result)
+                                 '()
+                                 dir)
+               (lambda (e1 e2)
+                 (string<? (car e1) (car e2)))))
+
+(define* (check-if-same store drv path)
+         "Check if the given path and its store item are the same"
+         (let* ((filetype (stat:type (stat drv))))
+           (case filetype
+             ((regular)
+              (and (valid-path? store drv)
+                   (equal? (call-with-input-file path get-bytevector-all)
+                           (call-with-input-file drv get-bytevector-all))))
+             ((directory)
+              (and (valid-path? store drv)
+                   (equal? (directory-contents path)
+                           (directory-contents drv))))
+             (else #f))))
+
+(define* (add-and-check-item-to-store store path)
+         "Add PATH to STORE and check if the contents are the same"
+         (let* ((store-item (add-to-store store
+                                          (basename path)
+                                          #t "sha256" path))
+                (is-same (check-if-same store store-item path)))
+           (if (not is-same)
+             (exit 1))))
+
+(with-store store
+            (map (lambda (path)
+                   (add-and-check-item-to-store store (readlink* path)))
+                 (cdr (command-line))))

nixos/tests/guix/scripts/create-file-to-store.scm

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+;; A script that creates a store item with the given text and prints the
+;; resulting store item path.
+(use-modules (guix))
+
+(with-store store
+            (display (add-text-to-store store "guix-basic-test-text"
+                                        (string-join
+                                          (cdr (command-line))))))