Cannot run tests: Unhandled exception while running the tests: [TypeError: v.ctor.substring is not a function]

[FRosner]

Problem

I tried to execute the unit tests but it fails.

How to Reproduce

elm-lang/ $ git clone https://github.com/elm-lang/core.git

Cloning into 'core'...
remote: Counting objects: 6313, done.
remote: Compressing objects: 100% (31/31), done.
remote: Total 6313 (delta 5), reused 0 (delta 0), pack-reused 6281
Receiving objects: 100% (6313/6313), 1.33 MiB | 1.08 MiB/s, done.
Resolving deltas: 100% (4427/4427), done.
Checking connectivity... done.

elm-lang/ $ cd core/tests

tests/ $ npm install -g elm-test

/usr/local/bin/elm-test -> /usr/local/lib/node_modules/elm-test/bin/elm-test

> fsevents@1.0.15 install /usr/local/lib/node_modules/elm-test/node_modules/fsevents
> node-pre-gyp install --fallback-to-build

[fsevents] Success: "/usr/local/lib/node_modules/elm-test/node_modules/fsevents/lib/binding/Release/node-v47-darwin-x64/fse.node" already installed
Pass --update-binary to reinstall or --build-from-source to recompile
/usr/local/lib
└─┬ elm-test@0.18.2
  ├─┬ chalk@1.1.3
  │ ├── ansi-styles@2.2.1
  │ ├── escape-string-regexp@1.0.5
  │ ├─┬ has-ansi@2.0.0
  │ │ └── ansi-regex@2.0.0
  │ ├── strip-ansi@3.0.1
  │ └── supports-color@2.0.0
  ├─┬ chokidar@1.6.0
  │ ├─┬ anymatch@1.3.0
  │ │ ├── arrify@1.0.1
  │ │ └─┬ micromatch@2.3.11
  │ │   ├─┬ arr-diff@2.0.0
  │ │   │ └── arr-flatten@1.0.1
  │ │   ├── array-unique@0.2.1
  │ │   ├─┬ braces@1.8.5
  │ │   │ ├─┬ expand-range@1.8.2
  │ │   │ │ └─┬ fill-range@2.2.3
  │ │   │ │   ├── is-number@2.1.0
  │ │   │ │   ├── isobject@2.1.0
  │ │   │ │   ├── randomatic@1.1.6
  │ │   │ │   └── repeat-string@1.6.1
  │ │   │ ├── preserve@0.2.0
  │ │   │ └── repeat-element@1.1.2
  │ │   ├─┬ expand-brackets@0.1.5
  │ │   │ └── is-posix-bracket@0.1.1
  │ │   ├── extglob@0.3.2
  │ │   ├── filename-regex@2.0.0
  │ │   ├─┬ kind-of@3.1.0
  │ │   │ └── is-buffer@1.1.4
  │ │   ├── normalize-path@2.0.1
  │ │   ├─┬ object.omit@2.0.1
  │ │   │ ├─┬ for-own@0.1.4
  │ │   │ │ └── for-in@0.1.6
  │ │   │ └── is-extendable@0.1.1
  │ │   ├─┬ parse-glob@3.0.4
  │ │   │ ├── glob-base@0.3.0
  │ │   │ └── is-dotfile@1.0.2
  │ │   └─┬ regex-cache@0.4.3
  │ │     ├── is-equal-shallow@0.1.3
  │ │     └── is-primitive@2.0.0
  │ ├── async-each@1.0.1
  │ ├─┬ fsevents@1.0.15
  │ │ ├── nan@2.4.0
  │ │ └─┬ node-pre-gyp@0.6.29
  │ │   ├─┬ npmlog@3.1.2
  │ │   │ └─┬ gauge@2.6.0
  │ │   │   └─┬ strip-ansi@3.0.1
  │ │   │     └── ansi-regex@2.0.0
  │ │   ├─┬ rc@1.1.6
  │ │   │ └── minimist@1.2.0
  │ │   ├─┬ request@2.73.0
  │ │   │ └─┬ har-validator@2.0.6
  │ │   │   ├─┬ chalk@1.1.3
  │ │   │   │ ├── ansi-styles@2.2.1
  │ │   │   │ ├── escape-string-regexp@1.0.5
  │ │   │   │ ├── has-ansi@2.0.0
  │ │   │   │ └── supports-color@2.0.0
  │ │   │   └─┬ pinkie-promise@2.0.1
  │ │   │     └── pinkie@2.0.4
  │ │   ├─┬ rimraf@2.5.3
  │ │   │ └─┬ glob@7.0.5
  │ │   │   ├── fs.realpath@1.0.0
  │ │   │   └─┬ minimatch@3.0.2
  │ │   │     └─┬ brace-expansion@1.1.5
  │ │   │       ├── balanced-match@0.4.2
  │ │   │       └── concat-map@0.0.1
  │ │   └─┬ tar-pack@3.1.4
  │ │     ├─┬ once@1.3.3
  │ │     │ └── wrappy@1.0.2
  │ │     └─┬ readable-stream@2.1.4
  │ │       ├── buffer-shims@1.0.0
  │ │       ├── core-util-is@1.0.2
  │ │       ├── isarray@1.0.0
  │ │       ├── process-nextick-args@1.0.7
  │ │       ├── string_decoder@0.10.31
  │ │       └── util-deprecate@1.0.2
  │ ├── glob-parent@2.0.0
  │ ├── inherits@2.0.3
  │ ├─┬ is-binary-path@1.0.1
  │ │ └── binary-extensions@1.8.0
  │ ├─┬ is-glob@2.0.1
  │ │ └── is-extglob@1.0.0
  │ ├── path-is-absolute@1.0.1
  │ └─┬ readdirp@2.1.0
  │   ├─┬ minimatch@3.0.3
  │   │ └─┬ brace-expansion@1.1.6
  │   │   ├── balanced-match@0.4.2
  │   │   └── concat-map@0.0.1
  │   ├─┬ readable-stream@2.2.2
  │   │ ├── buffer-shims@1.0.0
  │   │ ├── core-util-is@1.0.2
  │   │ ├── isarray@1.0.0
  │   │ ├── process-nextick-args@1.0.7
  │   │ ├── string_decoder@0.10.31
  │   │ └── util-deprecate@1.0.2
  │   └── set-immediate-shim@1.0.1
  ├─┬ cross-spawn@4.0.0
  │ ├─┬ lru-cache@4.0.2
  │ │ ├── pseudomap@1.0.2
  │ │ └── yallist@2.0.0
  │ └─┬ which@1.2.12
  │   └── isexe@1.1.2
  ├─┬ find-up@1.1.2
  │ ├── path-exists@2.1.0
  │ └─┬ pinkie-promise@2.0.1
  │   └── pinkie@2.0.4
  ├── firstline@1.2.1
  ├─┬ fs-extra@0.30.0
  │ ├── graceful-fs@4.1.11
  │ ├── jsonfile@2.4.0
  │ ├── klaw@1.3.1
  │ └─┬ rimraf@2.5.4
  │   └─┬ glob@7.1.1
  │     ├── fs.realpath@1.0.0
  │     ├─┬ inflight@1.0.6
  │     │ └── wrappy@1.0.2
  │     └── once@1.4.0
  ├── lodash@4.13.1
  ├── minimist@1.2.0
  ├─┬ node-elm-compiler@4.1.0
  │ └── lodash@4.14.2
  └─┬ temp@0.8.3
    ├── os-tmpdir@1.0.2
    └── rimraf@2.2.8

tests/ $ ./run-tests.sh

Starting downloads...

  ● elm-community/json-extra 2.1.0
  ● elm-community/lazy-list 1.0.0
  ● elm-community/shrink 2.0.0
  ● elm-community/elm-test 3.1.0
  ● elm-lang/lazy 2.0.0
  ● elm-lang/core 5.0.0
  ● mgold/elm-random-pcg 4.0.2
  ● rtfeldman/node-test-runner 3.0.0

Packages configured successfully!
Linking elm-stuff/packages/elm-lang/core/5.0.0 to /Users/frosner/Documents/projects/elm-lang/core
Success! Compiled 1 module.
Successfully generated test.js
Success! Compiled 1 module.
Successfully generated /var/folders/60/swj3j8ns367dzgl7qx5_h1140000gn/T/elm_test_1161115-26852-alkz6g.js

elm-test
--------

Running 546 tests. To reproduce these results, run: elm-test --seed 260814822

Unhandled exception while running the tests: [TypeError: v.ctor.substring is not a function]

Environment

npm --version
3.3.12

elm --version
0.18.0

git rev-parse HEAD
d302d20addd83580277cb265434521fa735854ec

[process-bot]

Thanks for the issue! Make sure it satisfies this checklist. My human colleagues will appreciate it!

Here is what to expect next, and if anyone wants to comment, keep these things in mind.

[process-bot]

Thanks for the issue! Make sure it satisfies this checklist. My human colleagues will appreciate it!

Here is what to expect next, and if anyone wants to comment, keep these things in mind.