code.delx.au - gnu-emacs-elpa/blob - tests/parser.el

   1 ;;; tests/parser.el --- Some tests for js2-mode.
   2
   3 ;; Copyright (C) 2009, 2011-2013  Free Software Foundation, Inc.
   4
   5 ;; This file is part of GNU Emacs.
   6
   7 ;; GNU Emacs is free software: you can redistribute it and/or modify
   8 ;; it under the terms of the GNU General Public License as published by
   9 ;; the Free Software Foundation, either version 3 of the License, or
  10 ;; (at your option) any later version.
  11
  12 ;; GNU Emacs is distributed in the hope that it will be useful,
  13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 ;; GNU General Public License for more details.
  16
  17 ;; You should have received a copy of the GNU General Public License
  18 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  19
  20 ;;; Code:
  21
  22 (require 'ert)
  23 (require 'ert-x)
  24 (require 'js2-mode)
  25 (require 'cl-lib)
  26
  27 (defmacro js2-deftest (name buffer-contents &rest body)
  28   (declare (indent defun))
  29   `(ert-deftest ,(intern (format "js2-%s" name)) ()
  30      (with-temp-buffer
  31        (save-excursion
  32          (insert ,buffer-contents))
  33        (unwind-protect
  34            (progn
  35              ,@body)
  36          (fundamental-mode)))))
  37
  38 (defun js2-test-string-to-ast (s)
  39   (insert s)
  40   (js2-mode)
  41   (should (null js2-mode-buffer-dirty-p))
  42   js2-mode-ast)
  43
  44 (cl-defun js2-test-parse-string (code-string &key syntax-error errors-count
  45                                              reference)
  46   (ert-with-test-buffer (:name 'origin)
  47     (let ((ast (js2-test-string-to-ast code-string)))
  48       (if syntax-error
  49           (let ((errors (js2-ast-root-errors ast)))
  50             (should (= (or errors-count 1) (length errors)))
  51             (cl-destructuring-bind (_ pos len) (car (last errors))
  52               (should (string= syntax-error (substring code-string
  53                                                        (1- pos) (+ pos len -1))))))
  54         (should (= 0 (length (js2-ast-root-errors ast))))
  55         (ert-with-test-buffer (:name 'copy)
  56           (js2-print-tree ast)
  57           (skip-chars-backward " \t\n")
  58           (should (string= (or reference code-string)
  59                            (buffer-substring-no-properties
  60                             (point-min) (point)))))))))
  61
  62 (cl-defmacro js2-deftest-parse (name code-string &key bind syntax-error errors-count
  63                                      reference)
  64   "Parse CODE-STRING.  If SYNTAX-ERROR is nil, print syntax tree
  65 with `js2-print-tree' and assert the result to be equal to
  66 REFERENCE, if present, or the original string.  If SYNTAX-ERROR
  67 is passed, expect syntax error highlighting substring equal to
  68 SYNTAX-ERROR value.  BIND defines bindings to apply them around
  69 the test."
  70   (declare (indent defun))
  71   `(ert-deftest ,(intern (format "js2-%s" name)) ()
  72      (let ,(append bind '((js2-basic-offset 2)))
  73        (js2-test-parse-string ,code-string
  74                               :syntax-error ,syntax-error
  75                               :errors-count ,errors-count
  76                               :reference ,reference))))
  77
  78 ;;; Basics
  79
  80 (js2-deftest-parse variable-assignment
  81   "a = 1;")
  82
  83 (js2-deftest-parse empty-object-literal
  84   "b = {};")
  85
  86 (js2-deftest-parse empty-array-literal
  87   "c = [];")
  88
  89 (js2-deftest-parse array-with-missing-elements
  90   "var a = [1, 2, ,];")
  91
  92 (js2-deftest-parse comma-after-regexp
  93   "d = /eee/, 42;")
  94
  95 (js2-deftest-parse return-statement
  96   "function foo() {\n  return 2;\n}")
  97
  98 (js2-deftest-parse function-statement
  99   "function foo() {\n}")
 100
 101 (js2-deftest-parse function-statement-inside-block
 102   "if (true) {\n  function foo() {\n  }\n}")
 103
 104 (js2-deftest-parse function-expression-statements-are-verboten
 105   "function() {}" :syntax-error "(")
 106
 107 (js2-deftest-parse member-expr-as-function-name
 108   "function a.b.c[2](x, y) {\n}"
 109   :bind ((js2-allow-member-expr-as-function-name t)))
 110
 111 (js2-deftest-parse named-function-expression
 112   "a = function b() {};")
 113
 114 (js2-deftest-parse parenthesized-expression
 115   "(1 + 2);")
 116
 117 (js2-deftest-parse for-with-in-operator-in-parens
 118   "for (var y = (0 in []) in {}) {\n}")
 119
 120 (js2-deftest-parse for-with-in-operator-in-cond
 121   "for (var y = 1 ? 0 in [] : false in {}) {\n}")
 122
 123 (js2-deftest-parse let-expression
 124   "(let (x = 42) x);")
 125
 126 (js2-deftest-parse let-expression-statement
 127   "let (x = 42) x;")
 128
 129 ;;; Callers of `js2-valid-prop-name-token'
 130
 131 (js2-deftest-parse parse-property-access-when-not-keyword
 132   "A.foo = 3;")
 133
 134 (js2-deftest-parse parse-property-access-when-keyword
 135   "A.in = 3;"
 136   :bind ((js2-allow-keywords-as-property-names t)))
 137
 138 (js2-deftest-parse parse-property-access-when-keyword-no-xml
 139   "A.in = 3;"
 140   :bind ((js2-allow-keywords-as-property-names t)
 141          (js2-compiler-xml-available nil)))
 142
 143 (js2-deftest-parse parse-object-literal-when-not-keyword
 144   "a = {b: 1};")
 145
 146 (js2-deftest-parse parse-object-literal-when-keyword
 147   "a = {in: 1};"
 148   :bind ((js2-allow-keywords-as-property-names t)))
 149
 150 ;;; 'of' contextual keyword
 151
 152 (js2-deftest-parse parse-legacy-array-comp-loop-with-of
 153   "[a for (a of [])];")
 154
 155 (js2-deftest-parse parse-array-comp-loop
 156   "[for (a of []) a];")
 157
 158 (js2-deftest-parse parse-for-of
 159   "for (var a of []) {\n}")
 160
 161 (js2-deftest-parse of-can-be-var-name
 162   "var of = 3;")
 163
 164 (js2-deftest-parse of-can-be-function-name
 165   "function of() {\n}")
 166
 167 ;;; Destructuring binding
 168
 169 (js2-deftest-parse destruct-in-declaration
 170   "var {a, b} = {a: 1, b: 2};")
 171
 172 (js2-deftest-parse destruct-in-arguments
 173   "function f({a: aa, b: bb}) {\n}")
 174
 175 (js2-deftest-parse destruct-in-array-comp-loop
 176   "[a + b for ([a, b] in [[0, 1], [1, 2]])];")
 177
 178 (js2-deftest-parse destruct-in-catch-clause
 179   "try {\n} catch ({a, b}) {\n  a + b;\n}")
 180
 181 ;;; Object literals
 182
 183 (js2-deftest-parse object-literal-shorthand
 184   "var x = {a: 1, b, c: 1, d};")
 185
 186 (js2-deftest-parse object-literal-shorthard-with-number
 187   "var a = {1};" :syntax-error "}" :errors-count 2)
 188
 189 (js2-deftest-parse object-literal-method
 190   "var x = {f(y) {  return y;\n}};")
 191
 192 (js2-deftest object-literal-method-own-name-in-scope "({f(){f();}});"
 193   (js2-mode)
 194   (should (equal '("msg.undeclared.variable" "f")
 195                  (caar js2-parsed-warnings))))
 196
 197 (js2-deftest-parse object-literal-getter-method
 198   "var x = {get f() {  return 42;\n}};")
 199
 200 (js2-deftest-parse object-literal-setter-method
 201   "var x = {set f(y) {  x = y;\n}};")
 202
 203 (js2-deftest-parse object-literal-computed-keys
 204   "var x = {[Symbol.iterator]: function() {}};")
 205
 206 (js2-deftest-parse object-literal-computed-function-keys
 207   "var x = {[foo + bar](y) {  return y;\n}};")
 208
 209 (js2-deftest-parse object-literal-computed-getter-key
 210   "var x = {get [foo + bar]() {  return 42;\n}};")
 211
 212 (js2-deftest-parse object-literal-generator
 213   "var x = {*foo() {  yield 42;\n}};")
 214
 215 (js2-deftest-parse object-literal-computed-generator-key
 216   "var x = {*[foo + bar]() {  yield 42;\n}};")
 217
 218 ;;; Function definition
 219
 220 (js2-deftest function-redeclaring-var "var gen = 3; function gen() {};"
 221   (js2-mode)
 222   (should (= (length (js2-ast-root-warnings js2-mode-ast)) 1)))
 223
 224 (js2-deftest function-expression-var-same-name "var gen = function gen() {};"
 225   (js2-mode)
 226   (should (null (js2-ast-root-warnings js2-mode-ast))))
 227
 228 ;;; Function parameters
 229
 230 (js2-deftest-parse function-with-default-parameters
 231   "function foo(a = 1, b = a + 1) {\n}")
 232
 233 (js2-deftest-parse function-with-no-default-after-default
 234   "function foo(a = 1, b) {\n}")
 235
 236 (js2-deftest-parse function-with-destruct-after-default
 237   "function foo(a = 1, {b, c}) {\n}")
 238
 239 (js2-deftest-parse function-with-rest-parameter
 240   "function foo(a, b, ...rest) {\n}")
 241
 242 (js2-deftest-parse function-with-param-after-rest-parameter
 243   "function foo(a, ...b, rest) {\n}"
 244   :syntax-error "rest")
 245
 246 (js2-deftest-parse function-with-destruct-after-rest-parameter
 247   "function foo(a, ...b, {}) {\n}"
 248   :syntax-error "{}")
 249
 250 (js2-deftest-parse function-with-rest-after-default-parameter
 251   "function foo(a = 1, ...rest) {\n}")
 252
 253 ;;; Strict mode errors
 254
 255 (js2-deftest-parse function-bad-strict-parameters
 256   "'use strict';\nfunction foo(eval, {arguments}, bar) {\n}"
 257   :syntax-error "eval" :errors-count 2)
 258
 259 (js2-deftest-parse function-retroactive-bad-strict-parameters
 260   "function foo(arguments) {'use strict';}"
 261   :syntax-error "arguments" :errors-count 1)
 262
 263 (js2-deftest-parse function-duplicate-strict-parameters
 264   "'use strict';\nfunction foo(a, a) {\n}"
 265   :syntax-error "a" :errors-count 1)
 266
 267 (js2-deftest-parse function-bad-strict-function-name
 268   "'use strict';\nfunction eval() {\n}"
 269   :syntax-error "eval" :errors-count 1)
 270
 271 (js2-deftest-parse function-bad-retroactive-strict-function-name
 272   "function arguments() {'use strict';}"
 273   :syntax-error "arguments" :errors-count 1)
 274
 275 (js2-deftest-parse function-bad-strict-catch-name
 276   "'use strict';\ntry {} catch (eval) {}"
 277   :syntax-error "eval" :errors-count 1)
 278
 279 (js2-deftest-parse function-bad-strict-variable-name
 280   "'use strict';\nvar eval = 'kekeke';"
 281   :syntax-error "eval" :errors-count 1)
 282
 283 (js2-deftest-parse function-bad-strict-assignment
 284   "'use strict';\narguments = 'fufufu';"
 285   :syntax-error "arguments" :errors-count 1)
 286
 287 (js2-deftest-parse function-property-strict-assignment
 288   "'use strict';\narguments.okay = 'alright';")
 289
 290 (js2-deftest-parse function-strict-with
 291   "'use strict';\nwith ({}) {}"
 292   :syntax-error "with" :errors-count 1)
 293
 294 (js2-deftest-parse function-strict-octal
 295   "'use strict';\nvar number = 0644;"
 296   :syntax-error "0644" :errors-count 1)
 297
 298 (js2-deftest-parse function-strict-duplicate-keys
 299   "'use strict';\nvar object = {a: 1, a: 2, 'a': 3, ['a']: 4, 1: 5, '1': 6, [1 + 1]: 7};"
 300   :syntax-error "a" :errors-count 4) ; "a" has 3 dupes, "1" has 1 dupe.
 301
 302 (js2-deftest-parse function-strict-duplicate-getter
 303   "'use strict';\nvar a = {get x() {}, get x() {}};"
 304   :syntax-error "x" :errors-count 1)
 305
 306 (js2-deftest-parse function-strict-duplicate-setter
 307   "'use strict';\nvar a = {set x() {}, set x() {}};"
 308   :syntax-error "x" :errors-count 1)
 309
 310 ;;; Lack of errors in strict mode
 311
 312 (js2-deftest-parse function-strict-const-scope
 313   "'use strict';\nconst a;\nif (1) {\n  const a;\n}")
 314
 315 (js2-deftest-parse function-strict-no-getter-setter-duplicate
 316   "'use strict';\nvar a = {get x() {}, set x() {}};")
 317
 318 ;;; Spread operator
 319
 320 (js2-deftest-parse spread-in-array-literal
 321   "[1, ...[2, 3], 4, ...[5, 6]];")
 322
 323 (js2-deftest-parse spread-in-function-call
 324   "f(3, ...[t(2), t(3)], 42, ...[t(4)]);")
 325
 326 ;;; Arrow functions
 327
 328 (js2-deftest-parse arrow-function-with-empty-args-and-no-curlies
 329   "() => false;" :reference "() => {false};")
 330
 331 (js2-deftest-parse arrow-function-with-args-and-curlies
 332   "(a, b = 1, ...c) => {  c;\n};")
 333
 334 (js2-deftest-parse arrow-function-with-destructuring
 335   "([{a}, b]) => {  a + b;\n};")
 336
 337 (js2-deftest-parse parenless-arrow-function-prohibits-rest
 338   "...b => {b + 1;};" :syntax-error "=>")
 339
 340 (js2-deftest-parse parenless-arrow-function-prohibits-destructuring
 341   "[a, b] => {a + b;};" :syntax-error "]" :errors-count 4)
 342
 343 (js2-deftest-parse arrow-function-recovers-from-error
 344   "[(,foo) => 1];" :syntax-error "," :errors-count 6)
 345
 346 ;;; Automatic semicolon insertion
 347
 348 (js2-deftest-parse no-auto-semi-insertion-after-if
 349   "if (true) {\n}")
 350
 351 (js2-deftest-parse auto-semi-insertion-after-function
 352   "a = function() {}" :reference "a = function() {};")
 353
 354 (js2-deftest-parse auto-semi-one-variable-per-line
 355   "x\ny" :reference "x;\ny;")
 356
 357 ;;; Labels
 358
 359 (js2-deftest-parse labeled-stmt-node
 360   "foo:\nbar:\nx = y + 1;")
 361
 362 (js2-deftest no-label-node-inside-expr "x = y:"
 363   (let (js2-parse-interruptable-p)
 364     (js2-mode))
 365   (let ((assignment (js2-expr-stmt-node-expr (car (js2-scope-kids js2-mode-ast)))))
 366     (should (js2-name-node-p (js2-assign-node-right assignment)))))
 367
 368 (js2-deftest-parse label-and-loops "for (; ; ) {
 369   loop:
 370   for (; ; ) {
 371     continue loop;
 372   }
 373 }")
 374
 375 ;;; Generators
 376
 377 (js2-deftest-parse legacy-generator "function foo() {\n  yield 1;\n}")
 378
 379 (js2-deftest-parse legacy-generator-cannot-return
 380   "function foo() {\n  yield 1;\n return 2;\n}" :syntax-error "return 2")
 381
 382 (js2-deftest-parse harmony-generator "function* bar() {\n  yield 2;\n  return 3;\n}")
 383
 384 (js2-deftest-parse harmony-generator-yield-star "(function*(a) {  yield* a;\n});")
 385
 386 ;;; Comprehensions
 387
 388 (js2-deftest-parse parse-legacy-array-comp-loop-with-filter
 389   "[a for (a in b) if (a == 2)];")
 390
 391 (js2-deftest-parse parse-array-comp-loop-with-filters
 392   "[for (a in b) if (a == 2) if (b != 10) a];")
 393
 394 (js2-deftest-parse parse-generator-comp-loop-with-filters
 395   "(for (x of y) if (x != 4) x);")
 396
 397 (js2-deftest-parse parse-array-comp-with-yield-is-ok
 398   "(function() {  return [for (x of []) yield x];\n});")
 399
 400 (js2-deftest-parse parse-generator-comp-with-yield-is-not-ok
 401   "(function() {  return (for (x of []) yield x);\n});"
 402   :syntax-error "yield")
 403
 404 (js2-deftest-parse parse-generator-comp-with-yield-inside-function-is-ok
 405   "(for (x of []) function*() {  yield x;\n});")
 406
 407 ;;; Numbers
 408
 409 (js2-deftest-parse decimal-starting-with-zero "081;" :reference "81;")
 410
 411 (js2-deftest-parse huge-hex "0x0123456789abcdefABCDEF;" :reference "-1;")
 412
 413 (js2-deftest-parse octal-without-o "071;" :reference "57;")
 414
 415 (js2-deftest-parse hex-number-okay "0x123;" :reference "291;")
 416
 417 (js2-deftest-parse hex-number-broken "0xz23;"
 418   :syntax-error "0xz" :errors-count 2)
 419
 420 (js2-deftest-parse binary-number-okay "0b101;" :reference "5;")
 421
 422 (js2-deftest-parse binary-number-broken "0b210;"
 423   :syntax-error "0b2" :errors-count 2)
 424
 425 (js2-deftest-parse octal-number-okay "0o765;" :reference "501;")
 426
 427 (js2-deftest-parse octal-number-broken "0o812;"
 428   :syntax-error "0o8" :errors-count 2)
 429
 430 ;;; Modules
 431
 432 (js2-deftest parse-export-bindings "{one, two as dos}"
 433   (js2-init-scanner)
 434   (should (js2-match-token js2-LC))
 435   (let ((imports (js2-parse-export-bindings)))
 436     (should (not (equal nil imports)))
 437     (should (= 2 (length imports)))
 438     (let ((first (nth 0 imports))
 439           (second (nth 1 imports)))
 440       (should (equal "one" (js2-name-node-name (js2-export-binding-node-extern-name first))))
 441       (should (equal "two" (js2-name-node-name (js2-export-binding-node-extern-name second))))
 442       (let ((first-name (js2-export-binding-node-local-name first))
 443             (second-name (js2-export-binding-node-local-name second)))
 444         (should (equal first (js2-node-parent first-name)))
 445         (should (equal 3 (js2-node-len first-name)))
 446         (should (equal "one" (js2-name-node-name first-name)))
 447         (should (equal second (js2-node-parent second-name)))
 448         (should (equal 3 (js2-node-len second-name)))
 449         (should (equal "dos" (js2-name-node-name second-name)))))))
 450
 451 (js2-deftest parse-export-binding-as-default "one as default"
 452   (js2-init-scanner)
 453   (let ((binding (js2-maybe-parse-export-binding)))
 454     (should binding)
 455     (should (js2-export-binding-node-p binding))
 456     (let ((name (js2-export-binding-node-local-name binding)))
 457       (should name)
 458       (should (equal "default" (js2-name-node-name name))))))
 459
 460 (js2-deftest parse-namepsace-import "* as lib;"
 461   (js2-init-scanner)
 462   (should (js2-match-token js2-MUL))
 463   (let ((namespace-import (js2-parse-namespace-import)))
 464     (should (not (equal nil namespace-import)))
 465     (should (js2-namespace-import-node-p namespace-import))
 466     (should (= 1 (js2-node-pos namespace-import)))
 467     (should (equal 8 (js2-node-len namespace-import)))
 468     (let ((name-node (js2-namespace-import-node-name namespace-import)))
 469       (should (equal "lib" (js2-name-node-name name-node)))
 470       (should (= 5 (js2-node-pos name-node))))))
 471
 472 (js2-deftest parse-from-clause "from 'foo/bar';"
 473   (js2-init-scanner)
 474   (let ((from (js2-parse-from-clause)))
 475     (should (not (equal nil from)))
 476     (should (= 1 (js2-node-pos from)))
 477     (should (= 14 (js2-node-len from)))
 478     (should (equal "foo/bar" (js2-from-clause-node-module-id from)))))
 479
 480 (js2-deftest parse-import-module-id-only "import 'src/lib'"
 481   (js2-init-scanner)
 482   (should (js2-match-token js2-IMPORT))
 483   (let ((import (js2-parse-import)))
 484     (should (not (equal nil import)))
 485     (should (= 1 (js2-node-pos import)))
 486     (should (= 16 (js2-node-len import)))
 487     (should (equal nil (js2-import-node-import import)))
 488     (should (equal nil (js2-import-node-from import)))))
 489
 490 (js2-deftest parse-imported-default-binding "import theDefault from 'src/lib'"
 491   (js2-push-scope (make-js2-scope :pos 0))
 492   (js2-init-scanner)
 493   (should (js2-match-token js2-IMPORT))
 494   (let ((import-node (js2-parse-import)))
 495     (should (not (equal nil import-node)))
 496     (should (equal "src/lib" (js2-import-node-module-id import-node)))
 497     (let ((import (js2-import-node-import import-node)))
 498       (should (not (equal nil import)))
 499       (should (equal nil (js2-import-clause-node-namespace-import import)))
 500       (should (equal nil (js2-import-clause-node-named-imports import)))
 501       (let ((default (js2-import-clause-node-default-binding import)))
 502         (should (not (equal nil default)))
 503         (should (js2-export-binding-node-p default))
 504         (should (equal "theDefault" (js2-name-node-name (js2-export-binding-node-extern-name default)))))))
 505   (should (js2-scope-get-symbol js2-current-scope "theDefault")))
 506
 507 (js2-deftest parse-import-namespace-binding "import * as lib from 'src/lib'"
 508   (js2-push-scope (make-js2-scope :pos 0))
 509   (js2-init-scanner)
 510   (should (js2-match-token js2-IMPORT))
 511   (let ((import-node (js2-parse-import)))
 512     (should (not (equal nil import-node)))
 513     (should (equal "src/lib" (js2-import-node-module-id import-node)))
 514     (let ((import (js2-import-node-import import-node)))
 515       (should (not (equal nil import)))
 516       (should (equal nil (js2-import-clause-node-default-binding import)))
 517       (should (equal nil (js2-import-clause-node-named-imports import)))
 518       (let ((ns-import (js2-import-clause-node-namespace-import import)))
 519         (should (not (equal nil ns-import)))
 520         (should (js2-namespace-import-node-p ns-import))
 521         (should (equal "lib" (js2-name-node-name (js2-namespace-import-node-name ns-import)))))))
 522   (should (js2-scope-get-symbol js2-current-scope "lib")))
 523
 524 (js2-deftest parse-import-named-imports "import {foo as bar, baz} from 'src/lib'"
 525   (js2-push-scope (make-js2-scope :pos 0))
 526   (js2-init-scanner)
 527   (should (js2-match-token js2-IMPORT))
 528   (let ((import-node (js2-parse-import)))
 529     (should (not (equal nil import-node)))
 530     (should (equal "src/lib" (js2-import-node-module-id import-node)))
 531     (let ((import (js2-import-node-import import-node)))
 532       (should (not (equal nil import)))
 533       (should (equal nil (js2-import-clause-node-default-binding import)))
 534       (should (equal nil (js2-import-clause-node-namespace-import import)))
 535       (let ((named-imports (js2-import-clause-node-named-imports import)))
 536         (should (not (equal nil named-imports)))
 537         (should (listp named-imports))
 538         (should (= 2 (length named-imports)))
 539         (let ((first (nth 0 named-imports))
 540               (second (nth 1 named-imports)))
 541           (should (equal "bar" (js2-name-node-name (js2-export-binding-node-local-name first))))
 542           (should (equal "baz" (js2-name-node-name (js2-export-binding-node-local-name second))))))))
 543   (should (js2-scope-get-symbol js2-current-scope "bar"))
 544   (should (js2-scope-get-symbol js2-current-scope "baz")))
 545
 546 (js2-deftest parse-import-default-and-namespace "import stuff, * as lib from 'src/lib'"
 547   (js2-push-scope (make-js2-scope :pos 0))
 548   (js2-init-scanner)
 549   (should (js2-match-token js2-IMPORT))
 550   (let ((import-node (js2-parse-import)))
 551     (should (not (equal nil import-node)))
 552     (should (equal "src/lib" (js2-import-node-module-id import-node)))
 553     (let ((import (js2-import-node-import import-node)))
 554       (should (not (equal nil import)))
 555       (should (equal nil (js2-import-clause-node-named-imports import)))
 556       (let ((default (js2-import-clause-node-default-binding import))
 557             (ns-import (js2-import-clause-node-namespace-import import)))
 558         (should (not (equal nil default)))
 559         (should (equal "stuff" (js2-name-node-name (js2-export-binding-node-local-name default))))
 560         (should (not (equal nil ns-import)))
 561         (should (js2-namespace-import-node-p ns-import))
 562         (should (equal "lib" (js2-name-node-name (js2-namespace-import-node-name ns-import)))))))
 563   (should (js2-scope-get-symbol js2-current-scope "stuff"))
 564   (should (js2-scope-get-symbol js2-current-scope "lib")))
 565
 566 (js2-deftest parse-import-default-and-named-imports
 567   "import robert as bob, {cookies, pi as PIE} from 'src/lib'"
 568   (js2-push-scope (make-js2-scope :pos 0))
 569   (js2-init-scanner)
 570   (should (js2-match-token js2-IMPORT))
 571   (let ((import-node (js2-parse-import)))
 572     (should (not (equal nil import-node)))
 573     (should (equal "src/lib" (js2-import-node-module-id import-node)))
 574     (let ((import (js2-import-node-import import-node)))
 575       (should (not (equal nil import)))
 576       (should (not (equal nil (js2-import-clause-node-named-imports import))))
 577       (let ((default (js2-import-clause-node-default-binding import))
 578             (named-imports (js2-import-clause-node-named-imports import)))
 579         (should (not (equal nil default)))
 580         (should (equal "bob" (js2-name-node-name (js2-export-binding-node-local-name default))))
 581         (should (not (equal nil named-imports)))
 582         (should (= 2 (length named-imports))))))
 583   (should (js2-scope-get-symbol js2-current-scope "bob"))
 584   (should (js2-scope-get-symbol js2-current-scope "cookies"))
 585   (should (js2-scope-get-symbol js2-current-scope "PIE")))
 586
 587 (js2-deftest parse-this-module-in-from-clause "import {url} from this module;"
 588   (js2-push-scope (make-js2-scope :pos 0))
 589   (js2-init-scanner)
 590   (should (js2-match-token js2-IMPORT))
 591   (let ((import-node (js2-parse-import)))
 592     (should import-node)
 593     (let ((from-clause (js2-import-node-from import-node)))
 594       (should from-clause)
 595       (should (equal "this" (js2-from-clause-node-module-id from-clause)))
 596       (should (js2-from-clause-node-metadata-p from-clause)))))
 597
 598 (js2-deftest-parse import-only-for-side-effects "import 'src/lib';")
 599 (js2-deftest-parse import-default-only "import theDefault from 'src/lib';")
 600 (js2-deftest-parse import-named-only "import {one, two} from 'src/lib';")
 601 (js2-deftest-parse import-default-and-named "import theDefault, {one, two} from 'src/lib';")
 602 (js2-deftest-parse import-renaming-default "import * as lib from 'src/mylib';")
 603 (js2-deftest-parse import-renaming-named "import {one as uno, two as dos} from 'src/lib';")
 604 (js2-deftest-parse import-default-and-namespace "import robert as bob, * as lib from 'src/lib';")
 605 (js2-deftest-parse import-from-this-module "import {url} from this module;")
 606
 607 ;; Module Exports
 608
 609 (js2-deftest export-rexport "export * from 'other/lib'"
 610   (js2-init-scanner)
 611   (should (js2-match-token js2-EXPORT))
 612   (let ((export-node (js2-parse-export)))
 613     (should export-node)
 614     (should (js2-export-node-from-clause export-node))))
 615
 616 (js2-deftest export-export-named-list "export {foo, bar as bang};"
 617   (js2-init-scanner)
 618   (should (js2-match-token js2-EXPORT))
 619   (let ((export-node (js2-parse-export)))
 620     (should export-node)
 621     (let ((exports (js2-export-node-exports-list export-node)))
 622       (should exports)
 623       (should (= 2 (length exports))))))
 624
 625 (js2-deftest re-export-named-list "export {foo, bar as bang} from 'other/lib'"
 626   (js2-init-scanner)
 627   (should (js2-match-token js2-EXPORT))
 628   (let ((export-node (js2-parse-export)))
 629     (should export-node)
 630     (should (js2-export-node-from-clause export-node))
 631     (let ((exports (js2-export-node-exports-list export-node)))
 632       (should exports)
 633       (should (= 2 (length exports))))))
 634
 635 (js2-deftest export-variable-statement "export var foo = 'bar', baz = 'bang';"
 636   (js2-init-scanner)
 637   (js2-push-scope (make-js2-scope :pos 0))
 638   (should (js2-match-token js2-EXPORT))
 639   (let ((export-node (js2-parse-export)))
 640     (should export-node)
 641     (should (js2-export-node-declaration export-node))))
 642
 643 (js2-deftest export-const-declaration "export const PI = Math.PI;"
 644   (js2-init-scanner)
 645   (js2-push-scope (make-js2-scope :pos 0))
 646   (should (js2-match-token js2-EXPORT))
 647   (let ((export-node (js2-parse-export)))
 648     (should export-node)
 649     (should (js2-export-node-declaration export-node))))
 650
 651 (js2-deftest export-let-declaration "export let foo = [1];"
 652   (js2-init-scanner)
 653   (js2-push-scope (make-js2-scope :pos 0))
 654   (should (js2-match-token js2-EXPORT))
 655   (let ((export-node (js2-parse-export)))
 656     (should export-node)
 657     (should (js2-var-decl-node-p (js2-export-node-declaration export-node)))))
 658
 659 (js2-deftest export-class-declaration "export class Foo {};"
 660   (js2-init-scanner)
 661   (js2-push-scope (make-js2-scope :pos 0))
 662   (should (js2-match-token js2-EXPORT))
 663   (let ((export-node (js2-parse-export)))
 664     (should export-node)
 665     (should (js2-class-node-p (js2-export-node-declaration export-node)))))
 666
 667 (js2-deftest export-function-declaration "export default function doStuff() {};"
 668   (js2-init-scanner)
 669   (js2-push-scope (make-js2-scope :pos 0))
 670   (should (js2-match-token js2-EXPORT))
 671   (let ((export-node (js2-parse-export)))
 672     (should export-node)
 673     (should (js2-export-node-default export-node))))
 674
 675 (js2-deftest export-generator-declaration "export default function* one() {};"
 676   (js2-init-scanner)
 677   (js2-push-scope (make-js2-scope :pos 0))
 678   (should (js2-match-token js2-EXPORT))
 679   (let ((export-node (js2-parse-export)))
 680     (should export-node)
 681     (should (js2-export-node-default export-node))))
 682
 683 (js2-deftest export-assignment-expression "export default a = b;"
 684   (js2-init-scanner)
 685   (js2-push-scope (make-js2-scope :pos 0))
 686   (should (js2-match-token js2-EXPORT))
 687   (let ((export-node (js2-parse-export)))
 688     (should export-node)
 689     (should (js2-export-node-default export-node))))
 690
 691 (js2-deftest export-function-no-semicolon "export default function foo() {}"
 692   (js2-mode)
 693   (should (equal nil js2-parsed-warnings)))
 694 (js2-deftest export-default-function-no-semicolon "export function foo() {}"
 695   (js2-mode)
 696   (should (equal nil js2-parsed-warnings)))
 697 (js2-deftest export-anything-else-does-require-a-semicolon "export var obj = {}"
 698   (js2-mode)
 699   (should (not (equal nil js2-parsed-warnings))))
 700
 701 (js2-deftest-parse parse-export-rexport "export * from 'other/lib';")
 702 (js2-deftest-parse parse-export-export-named-list "export {foo, bar as bang};")
 703 (js2-deftest-parse parse-re-export-named-list "export {foo, bar as bang} from 'other/lib';")
 704 (js2-deftest-parse parse-export-const-declaration "export const PI = Math.PI;")
 705 (js2-deftest-parse parse-export-let-declaration "export let foo = [1];")
 706 (js2-deftest-parse parse-export-function-declaration "export default function doStuff() {};")
 707 (js2-deftest-parse parse-export-generator-declaration "export default function* one() {};")
 708 (js2-deftest-parse parse-export-assignment-expression "export default a = b;")
 709
 710 ;;; Strings
 711
 712 (js2-deftest-parse string-literal
 713   "var x = 'y';")
 714
 715 (js2-deftest-parse object-get-string-literal
 716   "var x = {y: 5};\nvar z = x[\"y\"];")
 717
 718 (js2-deftest-parse template-no-substritutions
 719   "var x = `abc
 720             def`, y = `\\u0000`;")
 721
 722 (js2-deftest-parse template-with-substitutions
 723   "var y = `${a + b} ${d + e + f}`;")
 724
 725 (js2-deftest-parse tagged-template
 726   "foo.args`${++x, \"o\"}k`;")
 727
 728 ;;; Classes
 729
 730 (js2-deftest-parse parse-harmony-class-statement
 731   "class Foo {\n  get bar() {  return 42;\n}\n  set bar(x) {  y = x;\n}\n}")
 732
 733 (js2-deftest-parse parse-harmony-class-statement-without-name-is-not-ok
 734   "class {\n  get bar() {  return 42;\n}\n}"
 735   :syntax-error "{")
 736
 737 (js2-deftest-parse parse-harmony-class-expression
 738   "var Foo1 = class Foo {\n  bar() {  return 42;\n}\n};")
 739
 740 (js2-deftest-parse parse-harmony-anonymous-class-expression
 741   "var Foo = class {\n  set bar(x) {  bar = x;\n}\n};")
 742
 743 (js2-deftest-parse parse-harmony-class-with-extends
 744   "class Foo extends Bar {\n}")
 745
 746 (js2-deftest-parse parse-harmony-anonymous-class-with-extends
 747   "foo.Foo = class extends Bar {\n  set bar(x) {  bar = x;\n}\n};")
 748
 749 (js2-deftest-parse parse-harmony-class-with-complex-extends
 750   "class Foo extends foo[BAR][2].Baz {\n}")
 751
 752 (js2-deftest-parse parse-harmony-class-missing-extended-class-is-not-ok
 753   "class Foo extends {\n}"
 754   :syntax-error "extends")
 755
 756 (js2-deftest-parse parse-harmony-class-static-method
 757   "class Foo extends Bar {\n  static bar() {  return 42;\n}\n}")
 758
 759 (js2-deftest-parse parse-unterminated-class-is-not-okay
 760   "class Foo {\n  get bar() {  return 42;\n}"
 761   :syntax-error "}")
 762
 763 (js2-deftest-parse parse-super-keyword
 764   "class Foo {\n  constructor() {  super(42);\n}\n  foo() {  super.foo();\n}\n}")
 765
 766 (js2-deftest-parse parse-class-keywordlike-method
 767   "class C {\n  delete() {}\n  if() {}\n}")
 768
 769 (js2-deftest-parse parse-harmony-class-allow-semicolon-element
 770   "class Foo {;}" :reference "class Foo {\n}")
 771
 772 ;;; Scopes
 773
 774 (js2-deftest ast-symbol-table-includes-fn-node "function foo() {}"
 775   (js2-mode)
 776   (let ((entry (js2-scope-get-symbol js2-mode-ast 'foo)))
 777     (should (= (js2-symbol-decl-type entry) js2-FUNCTION))
 778     (should (equal (js2-symbol-name entry) "foo"))
 779     (should (js2-function-node-p (js2-symbol-ast-node entry)))))
 780
 781 (js2-deftest fn-symbol-table-includes-nested-fn "function foo() {
 782   function bar() {}
 783   var x;
 784 }"
 785   (js2-mode)
 786   (let* ((scope (js2-node-at-point (point-min)))
 787          (fn-entry (js2-scope-get-symbol scope 'bar))
 788          (var-entry (js2-scope-get-symbol scope 'x)))
 789     (should (string= (js2-name-node-name (js2-function-node-name scope)) "foo"))
 790     (should (= (js2-symbol-decl-type fn-entry) js2-FUNCTION))
 791     (should (js2-function-node-p (js2-symbol-ast-node fn-entry)))
 792     (should (= (js2-symbol-decl-type var-entry) js2-VAR))
 793     (should (js2-name-node-p (js2-symbol-ast-node var-entry)))))
 794
 795 (defun js2-test-scope-of-nth-variable-satisifies-predicate (variable nth predicate)
 796   (goto-char (point-min))
 797   (dotimes (n (1+ nth)) (search-forward variable))
 798   (forward-char -1)
 799   (let ((scope (js2-node-get-enclosing-scope (js2-node-at-point))))
 800     (should (funcall predicate (js2-get-defining-scope scope variable)))))
 801
 802 (js2-deftest for-node-is-declaration-scope "for (let i = 0; i; ++i) {};"
 803   (js2-mode)
 804   (js2-test-scope-of-nth-variable-satisifies-predicate "i" 0 #'js2-for-node-p))
 805
 806 (js2-deftest const-scope-sloppy-script "{const a;} a;"
 807   (js2-mode)
 808   (js2-test-scope-of-nth-variable-satisifies-predicate "a" 0 #'js2-script-node-p)
 809   (js2-test-scope-of-nth-variable-satisifies-predicate "a" 1 #'js2-script-node-p))
 810
 811 (js2-deftest const-scope-strict-script "'use strict'; { const a; } a;"
 812   (js2-mode)
 813   (js2-test-scope-of-nth-variable-satisifies-predicate "a" 0 #'js2-block-node-p)
 814   (js2-test-scope-of-nth-variable-satisifies-predicate "a" 1 #'null))
 815
 816 (js2-deftest const-scope-sloppy-function "function f() { { const a; } a; }"
 817   (js2-mode)
 818   (js2-test-scope-of-nth-variable-satisifies-predicate "a" 0 #'js2-function-node-p)
 819   (js2-test-scope-of-nth-variable-satisifies-predicate "a" 1 #'js2-function-node-p))
 820
 821 (js2-deftest const-scope-strict-function "function f() { 'use strict'; { const a; } a; }"
 822   (js2-mode)
 823   (js2-test-scope-of-nth-variable-satisifies-predicate "a" 0 #'js2-block-node-p)
 824   (js2-test-scope-of-nth-variable-satisifies-predicate "a" 1 #'null))
 825
 826 (js2-deftest array-comp-is-result-scope "[x * 2 for (x in y)];"
 827   (js2-mode)
 828   (js2-test-scope-of-nth-variable-satisifies-predicate "x" 0 #'js2-comp-loop-node-p))
 829
 830 (js2-deftest array-comp-has-parent-scope
 831              "var a,b=[for (i of [[1,2]]) for (j of i) j * a];"
 832   (js2-mode)
 833   (search-forward "for")
 834   (forward-char -3)
 835   (let ((node (js2-node-at-point)))
 836     (should (js2-scope-parent-scope node))
 837     (should (js2-get-defining-scope node "j"))))
 838
 839 ;;; Tokenizer
 840
 841 (js2-deftest get-token "(1+1)"
 842   (js2-init-scanner)
 843   (should (eq js2-LP (js2-next-token)))
 844   (should (eq js2-NUMBER (js2-next-token)))
 845   (should (eq js2-ADD (js2-next-token)))
 846   (should (eq js2-NUMBER (js2-next-token)))
 847   (should (eq js2-RP (js2-next-token))))
 848
 849 (js2-deftest unget-token "()"
 850   (js2-init-scanner)
 851   (should (eq js2-LP (js2-next-token)))
 852   (js2-unget-token)
 853   (should (eq js2-LP (js2-next-token)))
 854   (should (eq js2-RP (js2-next-token))))
 855
 856 (js2-deftest get-token-or-eol "x\n++;"
 857   (js2-init-scanner)
 858   (should (eq js2-NAME (js2-next-token)))
 859   (should (eq js2-EOL (js2-peek-token-or-eol)))
 860   (should (eq js2-INC (js2-next-token)))
 861   (should (eq js2-SEMI (js2-peek-token-or-eol))))
 862
 863 (js2-deftest unget-token-over-eol-and-comment "x\n//abc\ny"
 864   (js2-init-scanner)
 865   (should (eq js2-NAME (js2-next-token)))
 866   (should (eq js2-NAME (js2-next-token)))
 867   (should (equal "y" (js2-current-token-string)))
 868   (js2-unget-token)
 869   (should (eq js2-NAME (js2-current-token-type)))
 870   (should (equal "x" (js2-current-token-string))))
 871
 872 (js2-deftest ts-seek "(1+2)"
 873   (js2-init-scanner)
 874   (should (eq js2-LP (js2-next-token)))
 875   (should (eq js2-NUMBER (js2-next-token)))
 876   (js2-unget-token)
 877   (let ((state (make-js2-ts-state)))
 878     (should (eq js2-NUMBER (js2-next-token)))
 879     (should (eq js2-ADD (js2-next-token)))
 880     (js2-ts-seek state)
 881     (should (eq 1 js2-ti-lookahead))
 882     (should (eq js2-NUMBER (js2-next-token)))
 883     (should (eq 1 (js2-token-number
 884                    (js2-current-token))))))
 885
 886 (js2-deftest get-token-template-literal "`abc ${i} z ${j} def`"
 887   (js2-init-scanner)
 888   (should (eq js2-TEMPLATE_HEAD (js2-next-token)))
 889   (should (equal "abc " (js2-current-token-string)))
 890   (should (eq js2-NAME (js2-next-token)))
 891   (should (eq js2-RC (js2-next-token)))
 892   (should (eq js2-TEMPLATE_HEAD (js2-next-token 'TEMPLATE_TAIL)))
 893   (should (equal " z " (js2-current-token-string)))
 894   (should (eq js2-NAME (js2-next-token)))
 895   (should (eq js2-RC (js2-next-token)))
 896   (should (eq js2-NO_SUBS_TEMPLATE (js2-next-token 'TEMPLATE_TAIL)))
 897   (should (equal " def" (js2-current-token-string))))
 898
 899 ;;; Error handling
 900
 901 (js2-deftest for-node-with-error-len "for "
 902   (js2-mode)
 903   (let ((node (js2-node-at-point (point-min))))
 904     (should (= (js2-node-len (js2-node-parent node)) 4))))
 905
 906 (js2-deftest function-without-parens-error "function b {}"
 907   ;; Should finish the parse.
 908   (js2-mode))
 909
 910 ;;; Comments
 911
 912 (js2-deftest comment-node-length "//"
 913   (js2-mode)
 914   (let ((node (js2-node-at-point (point-min))))
 915     (should (= (js2-node-len node) 2))))
 916
 917 (js2-deftest comment-node-length-newline "//\n"
 918   (js2-mode)
 919   (let ((node (js2-node-at-point (point-min))))
 920     (should (= (js2-node-len node) 3))))
 921
 922 ;;; Variables classification
 923
 924 (defun js2--variables-summary (vars)
 925   (let (r)
 926     (setq vars (let (aslist)
 927                  (maphash (lambda (k v) (push (cons k v) aslist)) vars)
 928                  aslist))
 929     (dolist (v (sort vars (lambda (a b) (< (js2-node-abs-pos (js2-symbol-ast-node (car a)))
 930                                       (js2-node-abs-pos (js2-symbol-ast-node (car b)))))))
 931       (let* ((symbol (car v))
 932              (inition (cadr v))
 933              (uses (cddr v))
 934              (symn (js2-symbol-ast-node symbol))
 935              (namen (js2--get-name-node symn)))
 936         (push (format "%s@%s:%s"
 937                       (js2-symbol-name symbol)
 938                       (js2-node-abs-pos namen)
 939                       (if (eq inition ?P)
 940                           "P"
 941                         (if uses
 942                             (if inition "I" "N")
 943                           "U"))) r)
 944         (dolist (u (sort (cddr v) (lambda (a b) (< (js2-node-abs-pos a)
 945                                               (js2-node-abs-pos b)))))
 946           (push (js2-node-abs-pos u) r))))
 947     (reverse r)))
 948
 949 (defmacro js2-deftest-classify-variables (name buffer-contents summary)
 950  (declare (indent defun))
 951   `(ert-deftest ,(intern (format "js2-classify-variables-%s" name)) ()
 952      (with-temp-buffer
 953        (save-excursion
 954          (insert ,buffer-contents))
 955        (unwind-protect
 956            (progn
 957              (js2-mode)
 958              (should (equal ,summary (js2--variables-summary
 959                                       (js2--classify-variables)))))
 960          (fundamental-mode)))))
 961
 962 (js2-deftest-classify-variables incomplete-var-statement
 963   "var"
 964   '())
 965
 966 (js2-deftest-classify-variables unused-variable
 967   "function foo () { var x; return 42; }"
 968   '("foo@10:U" "x@23:U"))
 969
 970 (js2-deftest-classify-variables unused-variable-declared-twice
 971   "function foo (a) { var x; function bar () { var x; x=42; }; return a;}"
 972   '("foo@10:U" "a@15:P" 68 "x@24:U" "bar@36:U" "x@49:U"))
 973
 974 (js2-deftest-classify-variables assigned-variable
 975   "function foo () { var x; x=42; return x; }"
 976   '("foo@10:U" "x@23:I" 39))
 977
 978 (js2-deftest-classify-variables assignment-in-nested-function
 979   "function foo () { var x; function bar () { x=42; }; }"
 980   '("foo@10:U" "x@23:U" "bar@35:U"))
 981
 982 (js2-deftest-classify-variables unused-nested-function
 983   "function foo() { var i, j=1; function bar() { var x, y=42, z=i; return y; } return i; }"
 984   '("foo@10:U" "i@22:N" 62 84 "j@25:U" "bar@39:U" "x@51:U" "y@54:I" 72 "z@60:U"))
 985
 986 (js2-deftest-classify-variables prop-get-initialized
 987   "function foo () { var x, y={}; y.a=x; }"
 988   '("foo@10:U" "x@23:N" 36 "y@26:I" 32))
 989
 990 (js2-deftest-classify-variables prop-get-uninitialized
 991   "function foo () { var x; if(x.foo) alert('boom'); }"
 992   '("foo@10:U" "x@23:N" 29))
 993
 994 (js2-deftest-classify-variables prop-get-function-assignment
 995   "(function(w) { w.f = function() { var a=42, m; return a; }; })(window);"
 996   '("w@11:P" 11 16 "a@39:I" 55 "m@45:U"))
 997
 998 (js2-deftest-classify-variables let-declaration
 999   "function foo () { let x,y=1; return x; }"
1000   '("foo@10:U" "x@23:N" 37 "y@25:U"))
1001
1002 (js2-deftest-classify-variables external-function-call
1003   "function foo (m) { console.log(m, arguments); }"
1004   '("foo@10:U" "m@15:P" 32))
1005
1006 (js2-deftest-classify-variables global-function-call
1007   "function bar () { return 42; } function foo (a) { return bar(); }"
1008   '("bar@10:I" 58 "foo@41:U" "a@46:P"))
1009
1010 (js2-deftest-classify-variables let-declaration-for-scope
1011   "function foo () { for(let x=1,y; x<y; y++) {} }"
1012   '("foo@10:U" "x@27:I" 34 "y@31:N" 36 39))
1013
1014 (js2-deftest-classify-variables arguments-implicit-var
1015   "function foo () { var p; for(p in arguments) { return p; } }"
1016   '("foo@10:U" "p@23:I" 55))
1017
1018 (js2-deftest-classify-variables catch-error-variable
1019   "function foo () { try { throw 'Foo'; } catch (e) { console.log(e); }"
1020   '("foo@10:U" "e@47:I" 64))
1021
1022 (js2-deftest-classify-variables prop-get-assignment
1023   "function foo () { var x={y:{z:{}}}; x.y.z=42; }"
1024   '("foo@10:U" "x@23:I" 37))
1025
1026 (js2-deftest-classify-variables unused-function-argument
1027   "function foo (a) { return 42; }"
1028   '("foo@10:U" "a@15:P"))
1029
1030 (js2-deftest-classify-variables used-function-argument
1031   "function foo (a) { a=42; return a; }"
1032   '("foo@10:U" "a@15:P" 33))
1033
1034 (js2-deftest-classify-variables prop-get
1035   "function foo (a) { a=navigator.x||navigator.y; return a; }"
1036   '("foo@10:U" "a@15:P" 55))
1037
1038 (js2-deftest-classify-variables for-in-loop
1039   "function foo () { var d={}; for(var k in d) {var v=d[k]; } }"
1040   '("foo@10:U" "d@23:I" 42 52 "k@37:I" 54 "v@50:U"))
1041
1042 (js2-deftest-classify-variables array-comprehension-legacy
1043   "function foo() { var j,a=[for (i of [1,2,3]) i*j]; }"
1044   '("foo@10:U" "j@22:N" 48 "a@24:U" "i@32:I" 46))
1045
1046 (js2-deftest-classify-variables array-comprehension
1047   "function foo() { var j,a=[[i,j] for (i of [1,2,3])]; }"
1048   '("foo@10:U" "j@22:N" 30 "a@24:U" "i@38:I" 28))
1049
1050 (js2-deftest-classify-variables return-named-function
1051   "function foo() { var a=42; return function bar() { return a; } }"
1052   '("foo@10:U" "a@22:I" 59 "bar@44:I" 44))
1053
1054 (js2-deftest-classify-variables named-wrapper-function
1055   "function foo() { var a; (function bar() { a=42; })(); return a; }"
1056   '("foo@10:U" "a@22:I" 62 "bar@35:I" 35))