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| | ;;; tree-sitter-tests.el --- tests for src/tree-sitter.c -*- lexical-binding: t; -*-
;; Copyright (C) 2021 Free Software Foundation, Inc.
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Code:
(require 'ert)
(require 'tree-sitter-json)
(require 'tree-sitter)
(ert-deftest tree-sitter-basic-parsing ()
"Test basic parsing routines."
(with-temp-buffer
(let ((parser (tree-sitter-create-parser
(current-buffer) (tree-sitter-json))))
(should
(eq parser (car tree-sitter-parser-list)))
(should
(equal (tree-sitter-node-string
(tree-sitter-parser-root-node parser))
"(ERROR)"))
(insert "[1,2,3]")
(should
(equal (tree-sitter-node-string
(tree-sitter-parser-root-node parser))
"(document (array (number) (number) (number)))"))
(goto-char (point-min))
(forward-char 3)
(insert "{\"name\": \"Bob\"},")
(should
(equal
(tree-sitter-node-string
(tree-sitter-parser-root-node parser))
"(document (array (number) (object (pair key: (string (string_content)) value: (string (string_content)))) (number) (number)))")))))
(ert-deftest tree-sitter-node-api ()
"Tests for node API."
(with-temp-buffer
(let (parser root-node doc-node object-node pair-node)
(progn
(insert "[1,2,{\"name\": \"Bob\"},3]")
(setq parser (tree-sitter-create-parser
(current-buffer) (tree-sitter-json)))
(setq root-node (tree-sitter-parser-root-node
parser)))
;; `tree-sitter-node-type'.
(should (eq 'document (tree-sitter-node-type root-node)))
;; `tree-sitter-node-check'.
(should (eq t (tree-sitter-node-check root-node 'named)))
(should (eq nil (tree-sitter-node-check root-node 'missing)))
(should (eq nil (tree-sitter-node-check root-node 'extra)))
(should (eq nil (tree-sitter-node-check root-node 'has-error)))
;; `tree-sitter-node-child'.
(setq doc-node (tree-sitter-node-child root-node 0))
(should (eq 'array (tree-sitter-node-type doc-node)))
(should (equal (tree-sitter-node-string doc-node)
"(array (number) (number) (object (pair key: (string (string_content)) value: (string (string_content)))) (number))"))
;; `tree-sitter-node-child-count'.
(should (eql 9 (tree-sitter-node-child-count doc-node)))
(should (eql 4 (tree-sitter-node-child-count doc-node t)))
;; `tree-sitter-node-field-name-for-child'.
(setq object-node (tree-sitter-node-child doc-node 2 t))
(setq pair-node (tree-sitter-node-child object-node 0 t))
(should (eq 'object (tree-sitter-node-type object-node)))
(should (eq 'pair (tree-sitter-node-type pair-node)))
(should (equal "key"
(tree-sitter-node-field-name-for-child
pair-node 0)))
;; `tree-sitter-node-child-by-field-name'.
(should (equal "(string (string_content))"
(tree-sitter-node-string
(tree-sitter-node-child-by-field-name
pair-node "key"))))
;; `tree-sitter-node-next-sibling'.
(should (equal "(number)"
(tree-sitter-node-string
(tree-sitter-node-next-sibling object-node t))))
(should (equal "(\",\")"
(tree-sitter-node-string
(tree-sitter-node-next-sibling object-node))))
;; `tree-sitter-node-prev-sibling'.
(should (equal "(number)"
(tree-sitter-node-string
(tree-sitter-node-prev-sibling object-node t))))
(should (equal "(\",\")"
(tree-sitter-node-string
(tree-sitter-node-prev-sibling object-node))))
;; `tree-sitter-node-first-child-for-byte'.
(should (equal "(number)"
(tree-sitter-node-string
(tree-sitter-node-first-child-for-byte
doc-node 3 t))))
(should (equal "(\",\")"
(tree-sitter-node-string
(tree-sitter-node-first-child-for-byte
doc-node 3))))
;; `tree-sitter-node-descendant-for-byte-range'.
(should (equal "(\"{\")"
(tree-sitter-node-string
(tree-sitter-node-descendant-for-byte-range
root-node 6 7))))
(should (equal "(object (pair key: (string (string_content)) value: (string (string_content))))"
(tree-sitter-node-string
(tree-sitter-node-descendant-for-byte-range
root-node 6 7 t)))))))
(ert-deftest tree-sitter-query-api ()
"Tests for query API."
(with-temp-buffer
(let (parser root-node pattern doc-node object-node pair-node)
(progn
(insert "[1,2,{\"name\": \"Bob\"},3]")
(setq parser (tree-sitter-create-parser
(current-buffer) (tree-sitter-json)))
(setq root-node (tree-sitter-parser-root-node
parser))
(setq pattern "(string) @string
(pair key: (_) @keyword)
(number) @number"))
(should
(equal
'((number . "1") (number . "2")
(keyword . "\"name\"")
(string . "\"name\"")
(string . "\"Bob\"")
(number . "3"))
(mapcar (lambda (entry)
(cons (car entry)
(tree-sitter-node-content
(cdr entry))))
(tree-sitter-query-capture root-node pattern)))))))
(ert-deftest tree-sitter-narrow ()
"Tests if narrowing works."
(with-temp-buffer
(let (parser root-node pattern doc-node object-node pair-node)
(progn
(insert "xxx[1,{\"name\": \"Bob\"},2,3]xxx")
(narrow-to-region (+ (point-min) 3) (- (point-max) 3))
(setq parser (tree-sitter-create-parser
(current-buffer) (tree-sitter-json)))
(setq root-node (tree-sitter-parser-root-node
parser)))
;; This test is from the basic test.
(should
(equal
(tree-sitter-node-string
(tree-sitter-parser-root-node parser))
"(document (array (number) (object (pair key: (string (string_content)) value: (string (string_content)))) (number) (number)))"))
(widen)
(goto-char (point-min))
(insert "ooo")
(should (equal "oooxxx[1,{\"name\": \"Bob\"},2,3]xxx"
(buffer-string)))
(delete-region 10 26)
(should (equal "oooxxx[1,2,3]xxx"
(buffer-string)))
(narrow-to-region (+ (point-min) 6) (- (point-max) 3))
;; This test is also from the basic test.
(should
(equal (tree-sitter-node-string
(tree-sitter-parser-root-node parser))
"(document (array (number) (number) (number)))"))
(widen)
(goto-char (point-max))
(insert "[1,2]")
(should (equal "oooxxx[1,2,3]xxx[1,2]"
(buffer-string)))
(narrow-to-region (- (point-max) 5) (point-max))
(should
(equal (tree-sitter-node-string
(tree-sitter-parser-root-node parser))
"(document (array (number) (number)))"))
(widen)
(goto-char (point-min))
(insert "[1]")
(should (equal "[1]oooxxx[1,2,3]xxx[1,2]"
(buffer-string)))
(narrow-to-region (point-min) (+ (point-min) 3))
(should
(equal (tree-sitter-node-string
(tree-sitter-parser-root-node parser))
"(document (array (number)))")))))
(provide 'tree-sitter-tests)
;;; tree-sitter-tests.el ends here
|