-(require 'ert)\r
-(require 'ert-x)\r
-(require 'js2-mode)\r
-\r
-(defmacro js2-deftest (name buffer-contents &rest body)\r
- `(ert-deftest ,(intern (format "js2-%s" name)) ()\r
- (with-temp-buffer\r
- (save-excursion\r
- (insert ,buffer-contents))\r
- (unwind-protect\r
- (progn\r
- ,@body)\r
- (fundamental-mode)))))\r
-\r
-(put 'js2-deftest 'lisp-indent-function 'defun)\r
-\r
-(defun js2-test-string-to-ast (s)\r
- (ert-with-test-buffer (:name 'origin)\r
- (insert s)\r
- (js2-mode)\r
- (should (null js2-mode-buffer-dirty-p))\r
- js2-mode-ast))\r
-\r
-(defun* js2-test-parse-string (code-string &key syntax-error errors-count\r
- reference)\r
- (let ((ast (js2-test-string-to-ast code-string)))\r
- (if syntax-error\r
- (let ((errors (js2-ast-root-errors ast)))\r
- (should (= (or errors-count 1) (length errors)))\r
- (destructuring-bind (_ pos len) (first errors)\r
- (should (string= syntax-error (substring code-string\r
- (1- pos) (+ pos len -1))))))\r
- (should (= 0 (length (js2-ast-root-errors ast))))\r
- (ert-with-test-buffer (:name 'copy)\r
- (js2-print-tree ast)\r
- (skip-chars-backward " \t\n")\r
- (should (string= (or reference code-string)\r
- (buffer-substring-no-properties\r
- (point-min) (point))))))))\r
-\r
-(defmacro* js2-deftest-parse (name code-string &key bind syntax-error errors-count\r
- reference)\r
- "Parse CODE-STRING. If SYNTAX-ERROR is nil, print syntax tree\r
-with `js2-print-tree' and assert the result to be equal to\r
-REFERENCE, if present, or the original string. If SYNTAX-ERROR\r
-is passed, expect syntax error highlighting substring equal to\r
-SYNTAX-ERROR value. BIND defines bindings to apply them around\r
-the test."\r
- `(ert-deftest ,(intern (format "js2-%s" name)) ()\r
- (let ,(append bind '((js2-basic-offset 2)))\r
- (js2-test-parse-string ,code-string\r
- :syntax-error ,syntax-error\r
- :errors-count ,errors-count\r
- :reference ,reference))))\r
-\r
-(put 'js2-deftest-parse 'lisp-indent-function 'defun)\r
-\r
-;;; Basics\r
-\r
-(js2-deftest-parse variable-assignment\r
- "a = 1;")\r
-\r
-(js2-deftest-parse empty-object-literal\r
- "b = {};")\r
-\r
-(js2-deftest-parse empty-array-literal\r
- "c = [];")\r
-\r
-(js2-deftest-parse comma-after-regexp\r
- "d = /eee/, 42;")\r
-\r
-(js2-deftest-parse return-statement\r
- "function foo() {\n return 2;\n}")\r
-\r
-(js2-deftest-parse function-statement\r
- "function foo() {\n}")\r
-\r
-(js2-deftest-parse function-expression-statements-are-verboten\r
- "function() {}" :syntax-error "function")\r
-\r
-(js2-deftest-parse member-expr-as-function-name\r
- "function a.b.c[2](x, y) {\n}"\r
- :bind ((js2-allow-member-expr-as-function-name t)))\r
-\r
-(js2-deftest-parse named-function-expression\r
- "a = function b() {};")\r
-\r
-;;; Callers of `js2-valid-prop-name-token'.\r
-\r
-(js2-deftest-parse parse-property-access-when-not-keyword\r
- "A.foo = 3;")\r
-\r
-(js2-deftest-parse parse-property-access-when-keyword\r
- "A.in = 3;"\r
- :bind ((js2-allow-keywords-as-property-names t)))\r
-\r
-(js2-deftest-parse parse-property-access-when-keyword-no-xml\r
- "A.in = 3;"\r
- :bind ((js2-allow-keywords-as-property-names t)\r
- (js2-compiler-xml-available nil)))\r
-\r
-(js2-deftest-parse parse-object-literal-when-not-keyword\r
- "a = {b: 1};")\r
-\r
-(js2-deftest-parse parse-object-literal-when-keyword\r
- "a = {in: 1};"\r
- :bind ((js2-allow-keywords-as-property-names t)))\r
-\r
-;;; 'of' contextual keyword.\r
-\r
-(js2-deftest-parse parse-array-comp-loop-with-of\r
- "[a for (a of [])];")\r
-\r
-(js2-deftest-parse parse-for-of\r
- "for (var a of []) {\n}")\r
-\r
-(js2-deftest-parse of-can-be-var-name\r
- "var of = 3;")\r
-\r
-(js2-deftest-parse of-can-be-function-name\r
- "function of() {\n}")\r
-\r
-;;; Destructuring binding.\r
-\r
-(js2-deftest-parse destruct-in-declaration\r
- "var {a, b} = {a: 1, b: 2};")\r
-\r
-(js2-deftest-parse destruct-in-arguments\r
- "function f({a: aa, b: bb}) {\n}")\r
-\r
-(js2-deftest-parse destruct-in-array-comp-loop\r
- "[a + b for ([a, b] in [[0, 1], [1, 2]])];")\r
-\r
-(js2-deftest-parse destruct-in-catch-clause\r
- "try {\n} catch ({a, b}) {\n a + b;\n}")\r
-\r
-;;; Function parameters.\r
-\r
-(js2-deftest-parse function-with-default-parameters\r
- "function foo(a = 1, b = a + 1) {\n}")\r
-\r
-(js2-deftest-parse function-with-no-default-after-default\r
- "function foo(a = 1, b) {\n}"\r
- :syntax-error "b")\r
-\r
-(js2-deftest-parse function-with-destruct-after-default\r
- "function foo(a = 1, {b, c}) {\n}"\r
- :syntax-error "{")\r
-\r
-(js2-deftest-parse function-with-rest-parameter\r
- "function foo(a, b, ...rest) {\n}")\r
-\r
-(js2-deftest-parse function-with-param-after-rest-parameter\r
- "function foo(a, ...b, rest) {\n}"\r
- :syntax-error "rest")\r
-\r
-(js2-deftest-parse function-with-destruct-after-rest-parameter\r
- "function foo(a, ...b, {}) {\n}"\r
- :syntax-error "{}")\r
-\r
-(js2-deftest-parse function-with-rest-after-default-parameter\r
- "function foo(a = 1, ...rest) {\n}")\r
-\r
-;;; Arrow functions.\r
-\r
-(js2-deftest-parse arrow-function-with-empty-args-and-no-curlies\r
- "() => false;" :reference "() => {false};")\r
-\r
-(js2-deftest-parse arrow-function-with-args-and-curlies\r
- "(a, b = 1, ...c) => { c;\n};")\r
-\r
-(js2-deftest-parse parenless-arrow-function-prohibits-rest\r
- "...b => {b + 1;};" :syntax-error "b" :errors-count 2)\r
-\r
-(js2-deftest-parse parenless-arrow-function-prohibits-destructuring\r
- "[a, b] => {a + b;};" :syntax-error "]" :errors-count 5)\r
-\r
-;;; Automatic semicolon insertion.\r
-\r
-(js2-deftest-parse no-auto-semi-insertion-after-if\r
- "if (true) {\n}")\r
-\r
-(js2-deftest-parse auto-semi-insertion-after-function\r
- "a = function() {}" :reference "a = function() {};")\r
-\r
-(js2-deftest-parse auto-semi-one-variable-per-line\r
- "x\ny" :reference "x;\ny;")\r
-\r
-;;; Labels\r
-\r
-(js2-deftest-parse labeled-stmt-node\r
- "foo:\nbar:\n x = y + 1;")\r
-\r
-(js2-deftest no-label-node-inside-expr "x = y:"\r
- (let (js2-parse-interruptable-p)\r
- (js2-mode))\r
- (let ((assignment (js2-expr-stmt-node-expr (car (js2-scope-kids js2-mode-ast)))))\r
- (should (js2-name-node-p (js2-assign-node-right assignment)))))\r
-\r
-;;; Tokenizer\r
-\r
-(js2-deftest get-token "(1+1)"\r
- (js2-init-scanner)\r
- (should (eq js2-LP (js2-next-token)))\r
- (should (eq js2-NUMBER (js2-next-token)))\r
- (should (eq js2-ADD (js2-next-token)))\r
- (should (eq js2-NUMBER (js2-next-token)))\r
- (should (eq js2-RP (js2-next-token))))\r
-\r
-(js2-deftest unget-token "()"\r
- (js2-init-scanner)\r
- (should (eq js2-LP (js2-next-token)))\r
- (js2-unget-token)\r
- (should (eq js2-LP (js2-next-token)))\r
- (should (eq js2-RP (js2-next-token))))\r
-\r
-(js2-deftest get-token-or-eol "x\n++;"\r
- (js2-init-scanner)\r
- (should (eq js2-NAME (js2-next-token)))\r
- (should (eq js2-EOL (js2-peek-token-or-eol)))\r
- (should (eq js2-INC (js2-next-token)))\r
- (should (eq js2-SEMI (js2-peek-token-or-eol))))\r
-\r
-(js2-deftest unget-token-over-eol-and-comment "x\n//abc\ny"\r
- (js2-init-scanner)\r
- (should (eq js2-NAME (js2-next-token)))\r
- (should (eq js2-NAME (js2-next-token)))\r
- (should (equal "y" (js2-current-token-string)))\r
- (js2-unget-token)\r
- (should (eq js2-NAME (js2-current-token-type)))\r
- (should (equal "x" (js2-current-token-string))))\r
-\r
-(js2-deftest ts-seek "(1+2)"\r
- (js2-init-scanner)\r
- (should (eq js2-LP (js2-next-token)))\r
- (should (eq js2-NUMBER (js2-next-token)))\r
- (js2-unget-token)\r
- (let ((state (make-js2-ts-state)))\r
- (should (eq js2-NUMBER (js2-next-token)))\r
- (should (eq js2-ADD (js2-next-token)))\r
- (js2-ts-seek state)\r
- (should (eq 1 js2-ti-lookahead))\r
- (should (eq js2-NUMBER (js2-next-token)))\r
- (should (eq 1 (js2-token-number\r
- (js2-current-token))))))\r
+;;; tests/parser.el --- Some tests for js2-mode.
+
+;; Copyright (C) 2009, 2011-2016 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 <http://www.gnu.org/licenses/>.
+
+;;; Code:
+
+(require 'ert)
+(require 'ert-x)
+(require 'js2-mode)
+(require 'cl-lib)
+
+(defmacro js2-deftest (name buffer-contents &rest body)
+ (declare (indent defun))
+ `(ert-deftest ,(intern (format "js2-%s" name)) ()
+ (with-temp-buffer
+ (save-excursion
+ (insert ,buffer-contents))
+ (unwind-protect
+ (progn
+ ,@body)
+ (fundamental-mode)))))
+
+(defun js2-mode--and-parse ()
+ (js2-mode)
+ (js2-reparse))
+
+(defun js2-test-string-to-ast (s)
+ (insert s)
+ (js2-mode--and-parse)
+ (should (null js2-mode-buffer-dirty-p))
+ js2-mode-ast)
+
+(cl-defun js2-test-parse-string (code-string &key syntax-error errors-count
+ reference warnings-count)
+ (ert-with-test-buffer (:name 'origin)
+ (let ((ast (js2-test-string-to-ast code-string)))
+ (if syntax-error
+ (let ((errors (js2-ast-root-errors ast)))
+ (should (= (or errors-count 1) (length errors)))
+ (cl-destructuring-bind (_ pos len) (car (last errors))
+ (should (string= syntax-error (substring code-string
+ (1- pos) (+ pos len -1))))))
+ (should (= 0 (length (js2-ast-root-errors ast))))
+ (ert-with-test-buffer (:name 'copy)
+ (js2-print-tree ast)
+ (skip-chars-backward " \t\n")
+ (should (string= (or reference code-string)
+ (buffer-substring-no-properties
+ (point-min) (point)))))
+ (when warnings-count
+ (should (= warnings-count
+ (length (js2-ast-root-warnings ast)))))))))
+
+(cl-defmacro js2-deftest-parse (name code-string &key bind syntax-error errors-count
+ reference warnings-count)
+ "Parse CODE-STRING. If SYNTAX-ERROR is nil, print syntax tree
+with `js2-print-tree' and assert the result to be equal to
+REFERENCE, if present, or the original string. If SYNTAX-ERROR
+is passed, expect syntax error highlighting substring equal to
+SYNTAX-ERROR value. BIND defines bindings to apply them around
+the test."
+ (declare (indent defun))
+ `(ert-deftest ,(intern (format "js2-%s" name)) ()
+ (let ,(append bind '((js2-basic-offset 2)))
+ (js2-test-parse-string ,code-string
+ :syntax-error ,syntax-error
+ :errors-count ,errors-count
+ :warnings-count ,warnings-count
+ :reference ,reference))))
+
+;;; Basics
+
+(js2-deftest-parse variable-assignment
+ "a = 1;")
+
+(js2-deftest-parse empty-object-literal
+ "b = {};")
+
+(js2-deftest-parse empty-array-literal
+ "c = [];")
+
+(js2-deftest-parse array-with-missing-elements
+ "var a = [1, 2, ,];")
+
+(js2-deftest-parse comma-after-regexp
+ "d = /eee/, 42;")
+
+(js2-deftest-parse return-statement
+ "function foo() {\n return 2;\n}")
+
+(js2-deftest-parse function-statement
+ "function foo() {\n}")
+
+(js2-deftest-parse function-statement-inside-block
+ "if (true) {\n function foo() {\n }\n}")
+
+(js2-deftest-parse function-expression-statements-are-verboten
+ "function() {}" :syntax-error "(")
+
+(js2-deftest-parse member-expr-as-function-name
+ "function a.b.c[2](x, y) {\n}"
+ :bind ((js2-allow-member-expr-as-function-name t)))
+
+(js2-deftest-parse named-function-expression
+ "a = function b() {};")
+
+(js2-deftest-parse parenthesized-expression
+ "(1 + 2);")
+
+(js2-deftest-parse for-with-in-operator-in-parens
+ "for (var y = (0 in []) in {}) {\n}")
+
+(js2-deftest-parse for-with-in-operator-in-cond
+ "for (var y = 1 ? 0 in [] : false in {}) {\n}")
+
+(js2-deftest-parse let-expression
+ "(let (x = 42) x);")
+
+(js2-deftest-parse let-expression-statement
+ "let (x = 42) x;")
+
+(js2-deftest-parse void
+ "void 0;")
+
+;;; Callers of `js2-valid-prop-name-token'
+
+(js2-deftest-parse parse-property-access-when-not-keyword
+ "A.foo = 3;")
+
+(js2-deftest-parse parse-property-access-when-keyword
+ "A.in = 3;"
+ :bind ((js2-allow-keywords-as-property-names t)))
+
+(js2-deftest-parse parse-property-access-when-keyword-no-xml
+ "A.in = 3;"
+ :bind ((js2-allow-keywords-as-property-names t)
+ (js2-compiler-xml-available nil)))
+
+(js2-deftest-parse parse-object-literal-when-not-keyword
+ "a = {b: 1};")
+
+(js2-deftest-parse parse-object-literal-when-keyword
+ "a = {in: 1};"
+ :bind ((js2-allow-keywords-as-property-names t)))
+
+;;; 'of' contextual keyword
+
+(js2-deftest-parse parse-legacy-array-comp-loop-with-of
+ "[a for (a of [])];")
+
+(js2-deftest-parse parse-array-comp-loop
+ "[for (a of []) a];")
+
+(js2-deftest-parse parse-for-of
+ "for (var a of []) {\n}")
+
+(js2-deftest-parse of-can-be-name
+ "void of;")
+
+(js2-deftest-parse of-can-be-object-name
+ "of.z;")
+
+(js2-deftest-parse of-can-be-var-name
+ "var of = 3;")
+
+(js2-deftest-parse of-can-be-function-name
+ "function of() {\n}")
+
+;;; Destructuring binding
+
+(js2-deftest-parse destruct-in-declaration
+ "var {a, b} = {a: 1, b: 2};"
+ :warnings-count 0)
+
+(js2-deftest-parse destruct-in-arguments
+ "function f({a: aa, b: bb}) {\n}"
+ :warnings-count 0)
+
+(js2-deftest-parse destruct-in-array-comp-loop
+ "[a + b for ([a, b] in [[0, 1], [1, 2]])];")
+
+(js2-deftest-parse destruct-in-catch-clause
+ "try {\n} catch ({a, b}) {\n a + b;\n}"
+ :warnings-count 0)
+
+(js2-deftest-parse destruct-with-initializer-in-object
+ "var {a, b = 2, c} = {};\nb;"
+ :warnings-count 0)
+
+(js2-deftest-parse destruct-with-initializer-in-array
+ "var [a, b = 2, c] = [];\nb;"
+ :warnings-count 0)
+
+(js2-deftest-parse destruct-non-name-target-is-error
+ "var {1=1} = {};" :syntax-error "1" :errors-count 1)
+
+(js2-deftest-parse destruct-with-initializer-in-function-params
+ "function f({a, b = 1, c}, [d, e = 1, f]) {\n}")
+
+(js2-deftest-parse destruct-with-default-in-function-params
+ "function f({x = 1, y = 2} = {}, [x, y] = [1, 2]) {\n}")
+
+(js2-deftest-parse destruct-name-conflict-is-error-in-object
+ "\"use strict\";\nvar {a=1,a=2} = {};" :syntax-error "a" :errors-count 1)
+
+(js2-deftest destruct-name-conflict-is-warning-in-array "\"use strict\";\nvar [a=1,a=2] = [];"
+ (js2-mode--and-parse)
+ (should (equal '("msg.var.redecl" "a")
+ (caar js2-parsed-warnings))))
+
+(js2-deftest initializer-outside-destruct-is-error "({a=1});"
+ (js2-mode--and-parse)
+ (should (equal "msg.init.no.destruct"
+ (car (caar js2-parsed-errors)))))
+
+;;; Object literals
+
+(js2-deftest-parse object-literal-shorthand
+ "var x = {a: 1, b, c: 1, d};")
+
+(js2-deftest-parse object-literal-shorthard-with-number
+ "var a = {1};" :syntax-error "}" :errors-count 2)
+
+(js2-deftest-parse object-literal-method
+ "var x = {f(y) { return y;\n}};")
+
+(js2-deftest object-literal-method-own-name-in-scope "({f(){f();}});"
+ (js2-mode--and-parse)
+ (should (equal '("msg.undeclared.variable" "f")
+ (caar js2-parsed-warnings))))
+
+(js2-deftest-parse object-literal-getter-method
+ "var x = {get f() { return 42;\n}};")
+
+(js2-deftest-parse object-literal-setter-method
+ "var x = {set f(y) { x = y;\n}};")
+
+(js2-deftest-parse object-literal-computed-keys
+ "var x = {[Symbol.iterator]: function() {}};")
+
+(js2-deftest-parse object-literal-computed-function-keys
+ "var x = {[foo + bar](y) { return y;\n}};")
+
+(js2-deftest-parse object-literal-computed-getter-key
+ "var x = {get [foo + bar]() { return 42;\n}};")
+
+(js2-deftest-parse object-literal-generator
+ "var x = {*foo() { yield* 42;\n}};")
+
+(js2-deftest-parse object-literal-computed-generator-key
+ "var x = {*[foo + bar]() { yield 42;\n}};")
+
+;;; Function definition
+
+(js2-deftest function-redeclaring-var "var gen = 3; function gen() {};"
+ (js2-mode--and-parse)
+ (should (= (length (js2-ast-root-warnings js2-mode-ast)) 1)))
+
+(js2-deftest function-expression-var-same-name "var gen = function gen() {};"
+ (js2-mode--and-parse)
+ (should (null (js2-ast-root-warnings js2-mode-ast))))
+
+;;; Function parameters
+
+(js2-deftest-parse function-with-default-parameters
+ "function foo(a = 1, b = a + 1) {\n}")
+
+(js2-deftest-parse function-with-no-default-after-default
+ "function foo(a = 1, b) {\n}")
+
+(js2-deftest-parse function-with-destruct-after-default
+ "function foo(a = 1, {b, c}) {\n}")
+
+(js2-deftest-parse function-with-rest-parameter
+ "function foo(a, b, ...rest) {\n}")
+
+(js2-deftest-parse function-with-param-after-rest-parameter
+ "function foo(a, ...b, rest) {\n}"
+ :syntax-error "rest")
+
+(js2-deftest-parse function-with-destruct-after-rest-parameter
+ "function foo(a, ...b, {}) {\n}"
+ :syntax-error "{}")
+
+(js2-deftest-parse function-with-rest-after-default-parameter
+ "function foo(a = 1, ...rest) {\n}")
+
+;;; Strict mode errors
+
+(js2-deftest-parse function-bad-strict-parameters
+ "'use strict';\nfunction foo(eval, {arguments}, bar) {\n}"
+ :syntax-error "eval" :errors-count 2)
+
+(js2-deftest-parse function-retroactive-bad-strict-parameters
+ "function foo(arguments) {'use strict';}"
+ :syntax-error "arguments" :errors-count 1)
+
+(js2-deftest-parse function-duplicate-strict-parameters
+ "'use strict';\nfunction foo(a, a) {\n}"
+ :syntax-error "a" :errors-count 1)
+
+(js2-deftest-parse function-bad-strict-function-name
+ "'use strict';\nfunction eval() {\n}"
+ :syntax-error "eval" :errors-count 1)
+
+(js2-deftest-parse function-bad-retroactive-strict-function-name
+ "function arguments() {'use strict';}"
+ :syntax-error "arguments" :errors-count 1)
+
+(js2-deftest-parse function-bad-strict-catch-name
+ "'use strict';\ntry {} catch (eval) {}"
+ :syntax-error "eval" :errors-count 1)
+
+(js2-deftest-parse function-bad-strict-variable-name
+ "'use strict';\nvar eval = 'kekeke';"
+ :syntax-error "eval" :errors-count 1)
+
+(js2-deftest-parse function-bad-strict-assignment
+ "'use strict';\narguments = 'fufufu';"
+ :syntax-error "arguments" :errors-count 1)
+
+(js2-deftest-parse function-property-strict-assignment
+ "'use strict';\narguments.okay = 'alright';")
+
+(js2-deftest-parse function-strict-with
+ "'use strict';\nwith ({}) {}"
+ :syntax-error "with" :errors-count 1)
+
+(js2-deftest-parse function-strict-octal
+ "'use strict';\nvar number = 0644;"
+ :syntax-error "0644" :errors-count 1)
+
+(js2-deftest-parse function-strict-octal-allow-0o
+ "'use strict';\n0o644;" :reference "'use strict';\n420;")
+
+(js2-deftest-parse function-strict-duplicate-keys
+ "'use strict';\nvar object = {a: 1, a: 2, 'a': 3, ['a']: 4, 1: 5, '1': 6, [1 + 1]: 7};"
+ :syntax-error "a" :errors-count 4) ; "a" has 3 dupes, "1" has 1 dupe.
+
+(js2-deftest-parse function-strict-duplicate-getter
+ "'use strict';\nvar a = {get x() {}, get x() {}};"
+ :syntax-error "x" :errors-count 1)
+
+(js2-deftest-parse function-strict-duplicate-setter
+ "'use strict';\nvar a = {set x() {}, set x() {}};"
+ :syntax-error "x" :errors-count 1)
+
+;;; Lack of errors in strict mode
+
+(js2-deftest-parse function-strict-const-scope
+ "'use strict';\nconst a;\nif (1) {\n const a;\n}")
+
+(js2-deftest-parse function-strict-no-getter-setter-duplicate
+ "'use strict';\nvar a = {get x() {}, set x() {}};")
+
+;;; Spread operator
+
+(js2-deftest-parse spread-in-array-literal
+ "[1, ...[2, 3], 4, ...[5, 6]];")
+
+(js2-deftest-parse spread-in-function-call
+ "f(3, ...[t(2), t(3)], 42, ...[t(4)]);")
+
+(js2-deftest-parse rest-in-array-destructure
+ "let [x, y, z, ...w] = [1, ...a, ...b, c];")
+
+(js2-deftest-parse comma-after-rest-in-array
+ "let [...x,] = [1, 2, 3];"
+ :syntax-error "," :errors-count 1)
+
+(js2-deftest-parse elem-after-rest-in-array
+ "let [...x, y] = [1, 2, 3];"
+ :syntax-error "," :errors-count 2)
+
+(js2-deftest-parse array-destructure-expr-default
+ "let [[x] = [3]] = y;")
+
+(js2-deftest-parse spread-in-object-literal
+ "f({x, y, ...z});")
+
+(js2-deftest-parse rest-in-object-literal
+ "const {x, y, ...z} = f();")
+
+;;; Arrow functions
+
+(js2-deftest-parse arrow-function-with-empty-args-and-no-curlies
+ "() => false;" :reference "() => {false};")
+
+(js2-deftest-parse arrow-function-with-args-and-curlies
+ "(a, b = 1, ...c) => { c;\n};")
+
+(js2-deftest-parse arrow-function-with-destructuring
+ "([{a}, b]) => { a + b;\n};")
+
+(js2-deftest-parse parenless-arrow-function-prohibits-rest
+ "...b => {b + 1;};" :syntax-error "=>")
+
+(js2-deftest-parse parenless-arrow-function-prohibits-destructuring
+ "[a, b] => {a + b;};" :syntax-error "]" :errors-count 4)
+
+(js2-deftest-parse arrow-function-recovers-from-error
+ "[(,foo) => 1];" :syntax-error "," :errors-count 6)
+
+;;; Automatic semicolon insertion
+
+(js2-deftest-parse no-auto-semi-insertion-after-if
+ "if (true) {\n}")
+
+(js2-deftest-parse auto-semi-insertion-after-function
+ "a = function() {}" :reference "a = function() {};")
+
+(js2-deftest-parse auto-semi-one-variable-per-line
+ "x\ny" :reference "x;\ny;")
+
+;;; Labels
+
+(js2-deftest-parse labeled-stmt-node
+ "foo:\nbar:\nx = y + 1;")
+
+(js2-deftest no-label-node-inside-expr "x = y:"
+ (let (js2-parse-interruptable-p)
+ (js2-mode--and-parse))
+ (let ((assignment (js2-expr-stmt-node-expr (car (js2-scope-kids js2-mode-ast)))))
+ (should (js2-name-node-p (js2-assign-node-right assignment)))))
+
+(js2-deftest-parse label-and-loops "for (; ; ) {
+ loop:
+ for (; ; ) {
+ continue loop;
+ }
+}")
+
+;;; Generators
+
+(js2-deftest-parse legacy-generator "function foo() {\n yield 1;\n}")
+
+(js2-deftest-parse legacy-generator-cannot-return
+ "function foo() {\n yield 1;\n return 2;\n}" :syntax-error "return 2")
+
+(js2-deftest-parse harmony-generator "function* bar() {\n yield 2;\n return 3;\n}")
+
+(js2-deftest-parse harmony-generator-yield-star "(function*(a) { yield* a;\n});")
+
+;;; Comprehensions
+
+(js2-deftest-parse parse-legacy-array-comp-loop-with-filter
+ "[a for (a in b) if (a == 2)];")
+
+(js2-deftest-parse parse-array-comp-loop-with-filters
+ "[for (a in b) if (a == 2) if (b != 10) a];")
+
+(js2-deftest-parse parse-generator-comp-loop-with-filters
+ "(for (x of y) if (x != 4) x);")
+
+(js2-deftest-parse parse-array-comp-with-yield-is-ok
+ "(function() { return [for (x of []) yield x];\n});")
+
+(js2-deftest-parse parse-generator-comp-with-yield-is-not-ok
+ "(function() { return (for (x of []) yield x);\n});"
+ :syntax-error "yield")
+
+(js2-deftest-parse parse-generator-comp-with-yield-inside-function-is-ok
+ "(for (x of []) function*() { yield x;\n});")
+
+;;; Async
+
+(js2-deftest-parse async-function-statement
+ "async function foo() {\n}")
+
+(js2-deftest-parse async-function-statement-inside-block
+ "if (true) {\n async function foo() {\n }\n}")
+
+(js2-deftest-parse async-function-expression-statements-are-verboten
+ "async function() {}" :syntax-error "(")
+
+(js2-deftest-parse async-named-function-expression
+ "a = async function b() {};")
+
+(js2-deftest-parse async-arrow-function-expression
+ "a = async (b) => { b;\n};")
+
+(js2-deftest-parse async-method-in-object-literal
+ "({async f() {}});")
+
+(js2-deftest-parse async-method-in-class-body
+ "class C {\n async foo() {}\n}")
+
+(js2-deftest-parse static-async-method-in-class-body
+ "class C {\n static async foo() {}\n}")
+
+(js2-deftest-parse async-method-allow-await
+ "({async f() { await x;\n}});")
+
+;;; Await
+
+(js2-deftest-parse await-is-ok "async function foo() {\n await bar();\n}")
+
+(js2-deftest-parse await-inside-assignment-is-ok
+ "async function foo() {\n var result = await bar();\n}")
+
+(js2-deftest-parse await-inside-array-is-ok
+ "async function foo() {\n var results = [await bar(), await baz()];\n}")
+
+(js2-deftest-parse await-inside-non-async-function-is-not-ok
+ "function foo() {\n await bar();\n}"
+ :syntax-error "await")
+
+(js2-deftest-parse await-inside-non-async-arrow-function-is-not-ok
+ "a = () => { await bar();\n}"
+ :syntax-error "await")
+
+;;; 'async' and 'await' are contextual keywords
+
+(js2-deftest-parse async-can-be-name
+ "void async;")
+
+(js2-deftest-parse async-can-be-object-name
+ "async.z;")
+
+(js2-deftest-parse async-can-be-var-name
+ "var async = 3;")
+
+(js2-deftest-parse async-can-be-function-name
+ "function async() {\n}")
+
+(js2-deftest-parse await-can-be-name
+ "void await;")
+
+(js2-deftest-parse await-can-be-object-name
+ "await.z;")
+
+(js2-deftest-parse await-can-be-var-name
+ "var await = 3;")
+
+(js2-deftest-parse await-can-be-function-name
+ "function await() {\n}")
+
+;;; Numbers
+
+(js2-deftest-parse decimal-starting-with-zero "081;" :reference "81;")
+
+(js2-deftest-parse huge-hex "0x0123456789abcdefABCDEF;" :reference "-1;")
+
+(js2-deftest-parse octal-without-o "071;" :reference "57;")
+
+(js2-deftest-parse hex-number-okay "0x123;" :reference "291;")
+
+(js2-deftest-parse hex-number-broken "0xz23;"
+ :syntax-error "0xz" :errors-count 2)
+
+(js2-deftest-parse binary-number-okay "0b101;" :reference "5;")
+
+(js2-deftest-parse binary-number-broken "0b210;"
+ :syntax-error "0b2" :errors-count 2)
+
+(js2-deftest-parse octal-number-okay "0o765;" :reference "501;")
+
+(js2-deftest-parse octal-number-broken "0o812;"
+ :syntax-error "0o8" :errors-count 2)
+
+;;; Modules
+
+(js2-deftest parse-export-bindings "{one, two as dos}"
+ (js2-init-scanner)
+ (should (js2-match-token js2-LC))
+ (let ((imports (js2-parse-export-bindings)))
+ (should (not (equal nil imports)))
+ (should (= 2 (length imports)))
+ (let ((first (nth 0 imports))
+ (second (nth 1 imports)))
+ (should (equal "one" (js2-name-node-name (js2-export-binding-node-extern-name first))))
+ (should (equal "two" (js2-name-node-name (js2-export-binding-node-extern-name second))))
+ (let ((first-name (js2-export-binding-node-local-name first))
+ (second-name (js2-export-binding-node-local-name second)))
+ (should (equal first (js2-node-parent first-name)))
+ (should (equal 3 (js2-node-len first-name)))
+ (should (equal "one" (js2-name-node-name first-name)))
+ (should (equal second (js2-node-parent second-name)))
+ (should (equal 3 (js2-node-len second-name)))
+ (should (equal "dos" (js2-name-node-name second-name)))))))
+
+(js2-deftest parse-export-binding-as-default "one as default"
+ (js2-init-scanner)
+ (let ((binding (js2-maybe-parse-export-binding)))
+ (should binding)
+ (should (js2-export-binding-node-p binding))
+ (let ((name (js2-export-binding-node-local-name binding)))
+ (should name)
+ (should (equal "default" (js2-name-node-name name))))))
+
+(js2-deftest parse-namepsace-import "* as lib;"
+ (js2-init-scanner)
+ (should (js2-match-token js2-MUL))
+ (let ((namespace-import (js2-parse-namespace-import)))
+ (should (not (equal nil namespace-import)))
+ (should (js2-namespace-import-node-p namespace-import))
+ (should (= 1 (js2-node-pos namespace-import)))
+ (should (equal 8 (js2-node-len namespace-import)))
+ (let ((name-node (js2-namespace-import-node-name namespace-import)))
+ (should (equal "lib" (js2-name-node-name name-node)))
+ (should (= 5 (js2-node-pos name-node))))))
+
+(js2-deftest parse-from-clause "from 'foo/bar';"
+ (js2-init-scanner)
+ (let ((from (js2-parse-from-clause)))
+ (should (not (equal nil from)))
+ (should (= 1 (js2-node-pos from)))
+ (should (= 14 (js2-node-len from)))
+ (should (equal "foo/bar" (js2-from-clause-node-module-id from)))))
+
+(js2-deftest parse-import-module-id-only "import 'src/lib'"
+ (js2-init-scanner)
+ (should (js2-match-token js2-IMPORT))
+ (let ((import (js2-parse-import)))
+ (should (not (equal nil import)))
+ (should (= 1 (js2-node-pos import)))
+ (should (= 16 (js2-node-len import)))
+ (should (equal nil (js2-import-node-import import)))
+ (should (equal nil (js2-import-node-from import)))))
+
+(js2-deftest parse-imported-default-binding "import theDefault from 'src/lib'"
+ (js2-push-scope (make-js2-scope :pos 0))
+ (js2-init-scanner)
+ (should (js2-match-token js2-IMPORT))
+ (let ((import-node (js2-parse-import)))
+ (should (not (equal nil import-node)))
+ (should (equal "src/lib" (js2-import-node-module-id import-node)))
+ (let ((import (js2-import-node-import import-node)))
+ (should (not (equal nil import)))
+ (should (equal nil (js2-import-clause-node-namespace-import import)))
+ (should (equal nil (js2-import-clause-node-named-imports import)))
+ (let ((default (js2-import-clause-node-default-binding import)))
+ (should (not (equal nil default)))
+ (should (js2-export-binding-node-p default))
+ (should (equal "theDefault" (js2-name-node-name (js2-export-binding-node-extern-name default)))))))
+ (should (js2-scope-get-symbol js2-current-scope "theDefault")))
+
+(js2-deftest parse-import-namespace-binding "import * as lib from 'src/lib'"
+ (js2-push-scope (make-js2-scope :pos 0))
+ (js2-init-scanner)
+ (should (js2-match-token js2-IMPORT))
+ (let ((import-node (js2-parse-import)))
+ (should (not (equal nil import-node)))
+ (should (equal "src/lib" (js2-import-node-module-id import-node)))
+ (let ((import (js2-import-node-import import-node)))
+ (should (not (equal nil import)))
+ (should (equal nil (js2-import-clause-node-default-binding import)))
+ (should (equal nil (js2-import-clause-node-named-imports import)))
+ (let ((ns-import (js2-import-clause-node-namespace-import import)))
+ (should (not (equal nil ns-import)))
+ (should (js2-namespace-import-node-p ns-import))
+ (should (equal "lib" (js2-name-node-name (js2-namespace-import-node-name ns-import)))))))
+ (should (js2-scope-get-symbol js2-current-scope "lib")))
+
+(js2-deftest parse-import-named-imports "import {foo as bar, baz} from 'src/lib'"
+ (js2-push-scope (make-js2-scope :pos 0))
+ (js2-init-scanner)
+ (should (js2-match-token js2-IMPORT))
+ (let ((import-node (js2-parse-import)))
+ (should (not (equal nil import-node)))
+ (should (equal "src/lib" (js2-import-node-module-id import-node)))
+ (let ((import (js2-import-node-import import-node)))
+ (should (not (equal nil import)))
+ (should (equal nil (js2-import-clause-node-default-binding import)))
+ (should (equal nil (js2-import-clause-node-namespace-import import)))
+ (let ((named-imports (js2-import-clause-node-named-imports import)))
+ (should (not (equal nil named-imports)))
+ (should (listp named-imports))
+ (should (= 2 (length named-imports)))
+ (let ((first (nth 0 named-imports))
+ (second (nth 1 named-imports)))
+ (should (equal "bar" (js2-name-node-name (js2-export-binding-node-local-name first))))
+ (should (equal "baz" (js2-name-node-name (js2-export-binding-node-local-name second))))))))
+ (should (js2-scope-get-symbol js2-current-scope "bar"))
+ (should (js2-scope-get-symbol js2-current-scope "baz")))
+
+(js2-deftest parse-import-default-and-namespace "import stuff, * as lib from 'src/lib'"
+ (js2-push-scope (make-js2-scope :pos 0))
+ (js2-init-scanner)
+ (should (js2-match-token js2-IMPORT))
+ (let ((import-node (js2-parse-import)))
+ (should (not (equal nil import-node)))
+ (should (equal "src/lib" (js2-import-node-module-id import-node)))
+ (let ((import (js2-import-node-import import-node)))
+ (should (not (equal nil import)))
+ (should (equal nil (js2-import-clause-node-named-imports import)))
+ (let ((default (js2-import-clause-node-default-binding import))
+ (ns-import (js2-import-clause-node-namespace-import import)))
+ (should (not (equal nil default)))
+ (should (equal "stuff" (js2-name-node-name (js2-export-binding-node-local-name default))))
+ (should (not (equal nil ns-import)))
+ (should (js2-namespace-import-node-p ns-import))
+ (should (equal "lib" (js2-name-node-name (js2-namespace-import-node-name ns-import)))))))
+ (should (js2-scope-get-symbol js2-current-scope "stuff"))
+ (should (js2-scope-get-symbol js2-current-scope "lib")))
+
+(js2-deftest parse-import-default-and-named-imports
+ "import robert as bob, {cookies, pi as PIE} from 'src/lib'"
+ (js2-push-scope (make-js2-scope :pos 0))
+ (js2-init-scanner)
+ (should (js2-match-token js2-IMPORT))
+ (let ((import-node (js2-parse-import)))
+ (should (not (equal nil import-node)))
+ (should (equal "src/lib" (js2-import-node-module-id import-node)))
+ (let ((import (js2-import-node-import import-node)))
+ (should (not (equal nil import)))
+ (should (not (equal nil (js2-import-clause-node-named-imports import))))
+ (let ((default (js2-import-clause-node-default-binding import))
+ (named-imports (js2-import-clause-node-named-imports import)))
+ (should (not (equal nil default)))
+ (should (equal "bob" (js2-name-node-name (js2-export-binding-node-local-name default))))
+ (should (not (equal nil named-imports)))
+ (should (= 2 (length named-imports))))))
+ (should (js2-scope-get-symbol js2-current-scope "bob"))
+ (should (js2-scope-get-symbol js2-current-scope "cookies"))
+ (should (js2-scope-get-symbol js2-current-scope "PIE")))
+
+(js2-deftest parse-this-module-in-from-clause "import {url} from this module;"
+ (js2-push-scope (make-js2-scope :pos 0))
+ (js2-init-scanner)
+ (should (js2-match-token js2-IMPORT))
+ (let ((import-node (js2-parse-import)))
+ (should import-node)
+ (let ((from-clause (js2-import-node-from import-node)))
+ (should from-clause)
+ (should (equal "this" (js2-from-clause-node-module-id from-clause)))
+ (should (js2-from-clause-node-metadata-p from-clause)))))
+
+(js2-deftest-parse import-only-for-side-effects "import 'src/lib';")
+(js2-deftest-parse import-default-only "import theDefault from 'src/lib';")
+(js2-deftest-parse import-named-only "import {one, two} from 'src/lib';")
+(js2-deftest-parse import-default-and-named "import theDefault, {one, two} from 'src/lib';")
+(js2-deftest-parse import-renaming-default "import * as lib from 'src/mylib';")
+(js2-deftest-parse import-renaming-named "import {one as uno, two as dos} from 'src/lib';")
+(js2-deftest-parse import-default-and-namespace "import robert as bob, * as lib from 'src/lib';")
+(js2-deftest-parse import-from-this-module "import {url} from this module;")
+
+;; Module Exports
+
+(js2-deftest export-rexport "export * from 'other/lib'"
+ (js2-init-scanner)
+ (should (js2-match-token js2-EXPORT))
+ (let ((export-node (js2-parse-export)))
+ (should export-node)
+ (should (js2-export-node-from-clause export-node))))
+
+(js2-deftest export-export-named-list "export {foo, bar as bang};"
+ (js2-init-scanner)
+ (should (js2-match-token js2-EXPORT))
+ (let ((export-node (js2-parse-export)))
+ (should export-node)
+ (let ((exports (js2-export-node-exports-list export-node)))
+ (should exports)
+ (should (= 2 (length exports))))))
+
+(js2-deftest re-export-named-list "export {foo, bar as bang} from 'other/lib'"
+ (js2-init-scanner)
+ (should (js2-match-token js2-EXPORT))
+ (let ((export-node (js2-parse-export)))
+ (should export-node)
+ (should (js2-export-node-from-clause export-node))
+ (let ((exports (js2-export-node-exports-list export-node)))
+ (should exports)
+ (should (= 2 (length exports))))))
+
+(js2-deftest export-variable-statement "export var foo = 'bar', baz = 'bang';"
+ (js2-init-scanner)
+ (js2-push-scope (make-js2-scope :pos 0))
+ (should (js2-match-token js2-EXPORT))
+ (let ((export-node (js2-parse-export)))
+ (should export-node)
+ (should (js2-export-node-declaration export-node))))
+
+(js2-deftest export-const-declaration "export const PI = Math.PI;"
+ (js2-init-scanner)
+ (js2-push-scope (make-js2-scope :pos 0))
+ (should (js2-match-token js2-EXPORT))
+ (let ((export-node (js2-parse-export)))
+ (should export-node)
+ (should (js2-export-node-declaration export-node))))
+
+(js2-deftest export-let-declaration "export let foo = [1];"
+ (js2-init-scanner)
+ (js2-push-scope (make-js2-scope :pos 0))
+ (should (js2-match-token js2-EXPORT))
+ (let ((export-node (js2-parse-export)))
+ (should export-node)
+ (should (js2-var-decl-node-p (js2-export-node-declaration export-node)))))
+
+(js2-deftest export-class-declaration "export class Foo {}"
+ (js2-init-scanner)
+ (js2-push-scope (make-js2-scope :pos 0))
+ (should (js2-match-token js2-EXPORT))
+ (let ((export-node (js2-parse-export)))
+ (should export-node)
+ (should (js2-class-node-p (js2-export-node-declaration export-node)))))
+
+(js2-deftest export-function-declaration "export default function doStuff() {}"
+ (js2-init-scanner)
+ (js2-push-scope (make-js2-scope :pos 0))
+ (should (js2-match-token js2-EXPORT))
+ (let ((export-node (js2-parse-export)))
+ (should export-node)
+ (should (js2-export-node-default export-node))))
+
+(js2-deftest export-generator-declaration "export default function* one() {}"
+ (js2-init-scanner)
+ (js2-push-scope (make-js2-scope :pos 0))
+ (should (js2-match-token js2-EXPORT))
+ (let ((export-node (js2-parse-export)))
+ (should export-node)
+ (should (js2-export-node-default export-node))))
+
+(js2-deftest export-assignment-expression "export default a = b;"
+ (js2-init-scanner)
+ (js2-push-scope (make-js2-scope :pos 0))
+ (should (js2-match-token js2-EXPORT))
+ (let ((export-node (js2-parse-export)))
+ (should export-node)
+ (should (js2-export-node-default export-node))))
+
+(js2-deftest export-function-no-semicolon "export default function foo() {}"
+ (js2-mode--and-parse)
+ (should (equal nil js2-parsed-warnings)))
+(js2-deftest export-default-function-no-semicolon "export function foo() {}"
+ (js2-mode--and-parse)
+ (should (equal nil js2-parsed-warnings)))
+(js2-deftest export-anything-else-does-require-a-semicolon "export var obj = {}"
+ (js2-mode--and-parse)
+ (should (not (equal nil js2-parsed-warnings))))
+
+(js2-deftest export-default-async-function-no-semicolon "export default async function foo() {}"
+ (js2-mode--and-parse)
+ (should (equal nil js2-parsed-warnings)))
+(js2-deftest export-async-function-no-semicolon "export async function foo() {}"
+ (js2-mode--and-parse)
+ (should (equal nil js2-parsed-warnings)))
+
+(js2-deftest-parse parse-export-rexport "export * from 'other/lib';")
+(js2-deftest-parse parse-export-export-named-list "export {foo, bar as bang};")
+(js2-deftest-parse parse-re-export-named-list "export {foo, bar as bang} from 'other/lib';")
+(js2-deftest-parse parse-export-const-declaration "export const PI = Math.PI;")
+(js2-deftest-parse parse-export-let-declaration "export let foo = [1];")
+(js2-deftest-parse parse-export-function-declaration "export default function doStuff() {\n}")
+(js2-deftest-parse parse-export-generator-declaration "export default function* one() {\n}")
+(js2-deftest-parse parse-export-assignment-expression "export default a = b;")
+
+(js2-deftest-parse parse-export-function-declaration-no-semi
+ "export function f() {\n}")
+
+(js2-deftest-parse parse-export-class-declaration-no-semi
+ "export class C {\n}")
+
+(js2-deftest-parse parse-export-async-function-allow-await
+ "export async function f() {\n await f();\n}")
+
+(js2-deftest-parse parse-export-default-async-function-allow-await
+ "export default async function f() {\n await f();\n}")
+
+;;; Strings
+
+(js2-deftest-parse string-literal
+ "var x = 'y';")
+
+(js2-deftest-parse object-get-string-literal
+ "var x = {y: 5};\nvar z = x[\"y\"];")
+
+(js2-deftest-parse template-no-substritutions
+ "var x = `abc
+ def`, y = `\\u0000`;")
+
+(js2-deftest-parse template-with-substitutions
+ "var y = `${a + b} ${d + e + f}`;")
+
+(js2-deftest-parse tagged-template
+ "foo.args`${++x, \"o\"}k`;")
+
+;;; Classes
+
+(js2-deftest-parse parse-harmony-class-statement
+ "class Foo {\n get bar() { return 42;\n}\n set bar(x) { y = x;\n}\n}")
+
+(js2-deftest-parse parse-harmony-class-statement-without-name-is-not-ok
+ "class {\n get bar() { return 42;\n}\n}"
+ :syntax-error "{")
+
+(js2-deftest-parse parse-harmony-class-expression
+ "var Foo1 = class Foo {\n bar() { return 42;\n}\n};")
+
+(js2-deftest-parse parse-harmony-anonymous-class-expression
+ "var Foo = class {\n set bar(x) { bar = x;\n}\n};")
+
+(js2-deftest-parse parse-harmony-class-with-extends
+ "class Foo extends Bar {\n}")
+
+(js2-deftest-parse parse-harmony-anonymous-class-with-extends
+ "foo.Foo = class extends Bar {\n set bar(x) { bar = x;\n}\n};")
+
+(js2-deftest-parse parse-harmony-class-with-complex-extends
+ "class Foo extends foo[BAR][2].Baz {\n}")
+
+(js2-deftest-parse parse-harmony-class-missing-extended-class-is-not-ok
+ "class Foo extends {\n}"
+ :syntax-error "extends")
+
+(js2-deftest-parse parse-harmony-class-static-method
+ "class Foo extends Bar {\n static bar() { return 42;\n}\n}")
+
+(js2-deftest-parse parse-unterminated-class-is-not-okay
+ "class Foo {\n get bar() { return 42;\n}"
+ :syntax-error "}")
+
+(js2-deftest-parse parse-super-keyword
+ "class Foo {\n constructor() { super(42);\n}\n foo() { super.foo();\n}\n}")
+
+(js2-deftest-parse parse-class-keywordlike-method
+ "class C {\n delete() {}\n if() {}\n}")
+
+(js2-deftest-parse parse-harmony-class-allow-semicolon-element
+ "class Foo {;}" :reference "class Foo {\n}")
+
+;;; Scopes
+
+(js2-deftest ast-symbol-table-includes-fn-node "function foo() {}"
+ (js2-mode--and-parse)
+ (let ((entry (js2-scope-get-symbol js2-mode-ast 'foo)))
+ (should (= (js2-symbol-decl-type entry) js2-FUNCTION))
+ (should (equal (js2-symbol-name entry) "foo"))
+ (should (js2-function-node-p (js2-symbol-ast-node entry)))))
+
+(js2-deftest fn-symbol-table-includes-nested-fn "function foo() {
+ function bar() {}
+ var x;
+}"
+ (js2-mode--and-parse)
+ (let* ((scope (js2-node-at-point (point-min)))
+ (fn-entry (js2-scope-get-symbol scope 'bar))
+ (var-entry (js2-scope-get-symbol scope 'x)))
+ (should (string= (js2-name-node-name (js2-function-node-name scope)) "foo"))
+ (should (= (js2-symbol-decl-type fn-entry) js2-FUNCTION))
+ (should (js2-function-node-p (js2-symbol-ast-node fn-entry)))
+ (should (= (js2-symbol-decl-type var-entry) js2-VAR))
+ (should (js2-name-node-p (js2-symbol-ast-node var-entry)))))
+
+(defun js2-test-scope-of-nth-variable-satisifies-predicate (variable nth predicate)
+ (goto-char (point-min))
+ (dotimes (n (1+ nth)) (search-forward variable))
+ (forward-char -1)
+ (let ((scope (js2-node-get-enclosing-scope (js2-node-at-point))))
+ (should (funcall predicate (js2-get-defining-scope scope variable)))))
+
+(js2-deftest for-node-is-declaration-scope "for (let i = 0; i; ++i) {};"
+ (js2-mode--and-parse)
+ (js2-test-scope-of-nth-variable-satisifies-predicate "i" 0 #'js2-for-node-p))
+
+(js2-deftest const-scope-inside-script "{ const a; } a;"
+ (js2-mode--and-parse)
+ (js2-test-scope-of-nth-variable-satisifies-predicate "a" 0 #'js2-block-node-p)
+ (js2-test-scope-of-nth-variable-satisifies-predicate "a" 1 #'null))
+
+(js2-deftest const-scope-inside-function "function f() { { const a; } a; }"
+ (js2-mode--and-parse)
+ (js2-test-scope-of-nth-variable-satisifies-predicate "a" 0 #'js2-block-node-p)
+ (js2-test-scope-of-nth-variable-satisifies-predicate "a" 1 #'null))
+
+(js2-deftest array-comp-is-result-scope "[x * 2 for (x in y)];"
+ (js2-mode--and-parse)
+ (js2-test-scope-of-nth-variable-satisifies-predicate "x" 0 #'js2-comp-loop-node-p))
+
+(js2-deftest array-comp-has-parent-scope
+ "var a,b=[for (i of [[1,2]]) for (j of i) j * a];"
+ (js2-mode--and-parse)
+ (search-forward "for")
+ (forward-char -3)
+ (let ((node (js2-node-at-point)))
+ (should (js2-scope-parent-scope node))
+ (should (js2-get-defining-scope node "j"))))
+
+;;; Tokenizer
+
+(js2-deftest get-token "(1+1)"
+ (js2-init-scanner)
+ (should (eq js2-LP (js2-next-token)))
+ (should (eq js2-NUMBER (js2-next-token)))
+ (should (eq js2-ADD (js2-next-token)))
+ (should (eq js2-NUMBER (js2-next-token)))
+ (should (eq js2-RP (js2-next-token))))
+
+(js2-deftest unget-token "()"
+ (js2-init-scanner)
+ (should (eq js2-LP (js2-next-token)))
+ (js2-unget-token)
+ (should (eq js2-LP (js2-next-token)))
+ (should (eq js2-RP (js2-next-token))))
+
+(js2-deftest get-token-or-eol "x\n++;"
+ (js2-init-scanner)
+ (should (eq js2-NAME (js2-next-token)))
+ (should (eq js2-EOL (js2-peek-token-or-eol)))
+ (should (eq js2-INC (js2-next-token)))
+ (should (eq js2-SEMI (js2-peek-token-or-eol))))
+
+(js2-deftest unget-token-over-eol-and-comment "x\n//abc\ny"
+ (js2-init-scanner)
+ (should (eq js2-NAME (js2-next-token)))
+ (should (eq js2-NAME (js2-next-token)))
+ (should (equal "y" (js2-current-token-string)))
+ (js2-unget-token)
+ (should (eq js2-NAME (js2-current-token-type)))
+ (should (equal "x" (js2-current-token-string))))
+
+(js2-deftest ts-seek "(1+2)"
+ (js2-init-scanner)
+ (should (eq js2-LP (js2-next-token)))
+ (should (eq js2-NUMBER (js2-next-token)))
+ (js2-unget-token)
+ (let ((state (make-js2-ts-state)))
+ (should (eq js2-NUMBER (js2-next-token)))
+ (should (eq js2-ADD (js2-next-token)))
+ (js2-ts-seek state)
+ (should (eq 1 js2-ti-lookahead))
+ (should (eq js2-NUMBER (js2-next-token)))
+ (should (eq 1 (js2-token-number
+ (js2-current-token))))))
+
+(js2-deftest get-token-template-literal "`abc ${i} z ${j} def`"
+ (js2-init-scanner)
+ (should (eq js2-TEMPLATE_HEAD (js2-next-token)))
+ (should (equal "abc " (js2-current-token-string)))
+ (should (eq js2-NAME (js2-next-token)))
+ (should (eq js2-RC (js2-next-token)))
+ (should (eq js2-TEMPLATE_HEAD (js2-next-token 'TEMPLATE_TAIL)))
+ (should (equal " z " (js2-current-token-string)))
+ (should (eq js2-NAME (js2-next-token)))
+ (should (eq js2-RC (js2-next-token)))
+ (should (eq js2-NO_SUBS_TEMPLATE (js2-next-token 'TEMPLATE_TAIL)))
+ (should (equal " def" (js2-current-token-string))))
+
+;;; Error handling
+
+(js2-deftest for-node-with-error-len "for "
+ (js2-mode--and-parse)
+ (let ((node (js2-node-at-point (point-min))))
+ (should (= (js2-node-len (js2-node-parent node)) 4))))
+
+(js2-deftest function-without-parens-error "function b {}"
+ ;; Should finish the parse.
+ (js2-mode--and-parse))
+
+;;; Comments
+
+(js2-deftest comment-node-length "//"
+ (js2-mode--and-parse)
+ (let ((node (js2-node-at-point (point-min))))
+ (should (= (js2-node-len node) 2))))
+
+(js2-deftest comment-node-length-newline "//\n"
+ (js2-mode--and-parse)
+ (let ((node (js2-node-at-point (point-min))))
+ (should (= (js2-node-len node) 3))))
+
+;;; Variables classification
+
+(defun js2--variables-summary (vars)
+ (let (r)
+ (setq vars (let (aslist)
+ (maphash (lambda (k v) (push (cons k v) aslist)) vars)
+ aslist))
+ (dolist (v (sort vars (lambda (a b) (< (js2-node-abs-pos (js2-symbol-ast-node (car a)))
+ (js2-node-abs-pos (js2-symbol-ast-node (car b)))))))
+ (let* ((symbol (car v))
+ (inition (cadr v))
+ (uses (cddr v))
+ (symn (js2-symbol-ast-node symbol))
+ (namen (js2--get-name-node symn)))
+ (push (format "%s@%s:%s"
+ (js2-symbol-name symbol)
+ (js2-node-abs-pos namen)
+ (if (eq inition ?P)
+ "P"
+ (if uses
+ (if inition "I" "N")
+ "U"))) r)
+ (dolist (u (sort (cddr v) (lambda (a b) (< (js2-node-abs-pos a)
+ (js2-node-abs-pos b)))))
+ (push (js2-node-abs-pos u) r))))
+ (reverse r)))
+
+(defmacro js2-deftest-classify-variables (name buffer-contents summary)
+ (declare (indent defun))
+ `(ert-deftest ,(intern (format "js2-classify-variables-%s" name)) ()
+ (with-temp-buffer
+ (save-excursion
+ (insert ,buffer-contents))
+ (unwind-protect
+ (progn
+ (js2-mode--and-parse)
+ (should (equal ,summary (js2--variables-summary
+ (js2--classify-variables)))))
+ (fundamental-mode)))))
+
+(js2-deftest-classify-variables incomplete-var-statement
+ "var"
+ '())
+
+(js2-deftest-classify-variables unused-variable
+ "function foo () { var x; return 42; }"
+ '("foo@10:U" "x@23:U"))
+
+(js2-deftest-classify-variables unused-variable-declared-twice
+ "function foo (a) { var x; function bar () { var x; x=42; }; return a;}"
+ '("foo@10:U" "a@15:P" 68 "x@24:U" "bar@36:U" "x@49:U"))
+
+(js2-deftest-classify-variables assigned-variable
+ "function foo () { var x; x=42; return x; }"
+ '("foo@10:U" "x@23:I" 39))
+
+(js2-deftest-classify-variables assignment-in-nested-function
+ "function foo () { var x; function bar () { x=42; }; }"
+ '("foo@10:U" "x@23:U" "bar@35:U"))
+
+(js2-deftest-classify-variables unused-nested-function
+ "function foo() { var i, j=1; function bar() { var x, y=42, z=i; return y; } return i; }"
+ '("foo@10:U" "i@22:N" 62 84 "j@25:U" "bar@39:U" "x@51:U" "y@54:I" 72 "z@60:U"))
+
+(js2-deftest-classify-variables prop-get-initialized
+ "function foo () { var x, y={}; y.a=x; }"
+ '("foo@10:U" "x@23:N" 36 "y@26:I" 32))
+
+(js2-deftest-classify-variables prop-get-uninitialized
+ "function foo () { var x; if(x.foo) alert('boom'); }"
+ '("foo@10:U" "x@23:N" 29))
+
+(js2-deftest-classify-variables prop-get-function-assignment
+ "(function(w) { w.f = function() { var a=42, m; return a; }; })(window);"
+ '("w@11:P" 11 16 "a@39:I" 55 "m@45:U"))
+
+(js2-deftest-classify-variables let-declaration
+ "function foo () { let x,y=1; return x; }"
+ '("foo@10:U" "x@23:N" 37 "y@25:U"))
+
+(js2-deftest-classify-variables external-function-call
+ "function foo (m) { console.log(m, arguments); }"
+ '("foo@10:U" "m@15:P" 32))
+
+(js2-deftest-classify-variables global-function-call
+ "function bar () { return 42; } function foo (a) { return bar(); }"
+ '("bar@10:I" 58 "foo@41:U" "a@46:P"))
+
+(js2-deftest-classify-variables let-declaration-for-scope
+ "function foo () { for(let x=1,y; x<y; y++) {} }"
+ '("foo@10:U" "x@27:I" 34 "y@31:N" 36 39))
+
+(js2-deftest-classify-variables arguments-implicit-var
+ "function foo () { var p; for(p in arguments) { return p; } }"
+ '("foo@10:U" "p@23:I" 55))
+
+(js2-deftest-classify-variables catch-error-variable
+ "function foo () { try { throw 'Foo'; } catch (e) { console.log(e); }"
+ '("foo@10:U" "e@47:I" 64))
+
+(js2-deftest-classify-variables prop-get-assignment
+ "function foo () { var x={y:{z:{}}}; x.y.z=42; }"
+ '("foo@10:U" "x@23:I" 37))
+
+(js2-deftest-classify-variables unused-function-argument
+ "function foo (a) { return 42; }"
+ '("foo@10:U" "a@15:P"))
+
+(js2-deftest-classify-variables used-function-argument
+ "function foo (a) { a=42; return a; }"
+ '("foo@10:U" "a@15:P" 33))
+
+(js2-deftest-classify-variables prop-get
+ "function foo (a) { a=navigator.x||navigator.y; return a; }"
+ '("foo@10:U" "a@15:P" 55))
+
+(js2-deftest-classify-variables for-in-loop
+ "function foo () { var d={}; for(var k in d) {var v=d[k]; } }"
+ '("foo@10:U" "d@23:I" 42 52 "k@37:I" 54 "v@50:U"))
+
+(js2-deftest-classify-variables array-comprehension-legacy
+ "function foo() { var j,a=[for (i of [1,2,3]) i*j]; }"
+ '("foo@10:U" "j@22:N" 48 "a@24:U" "i@32:I" 46))
+
+(js2-deftest-classify-variables array-comprehension
+ "function foo() { var j,a=[[i,j] for (i of [1,2,3])]; }"
+ '("foo@10:U" "j@22:N" 30 "a@24:U" "i@38:I" 28))
+
+(js2-deftest-classify-variables return-named-function
+ "function foo() { var a=42; return function bar() { return a; } }"
+ '("foo@10:U" "a@22:I" 59 "bar@44:I" 44))
+
+(js2-deftest-classify-variables named-wrapper-function
+ "function foo() { var a; (function bar() { a=42; })(); return a; }"
+ '("foo@10:U" "a@22:I" 62 "bar@35:I" 35))