4 tests seem to be failing

[firefly2442]

Tested on Linux.

Run npm t:

Cursor
Without sorting
1) "before each" hook

Database
Insert
2) "before each" hook

Modifying documents
3) Throw an error if a modifier is used with a non-object argument
$set modifier

Schema
Indexing
4) "before each" hook

129 passing (138ms)
4 failing

1. Cursor
   "before each" hook:
   Uncaught InitializationError: Must provide db
   at new LevelUP (node_modules/levelup/lib/levelup.js:49:13)
   at LevelUP (node_modules/levelup/lib/levelup.js:33:12)
   at Function.Model.initStore (lib/model.js:79:100)
   at new Model (lib/model.js:52:35)
   at test/cursor.test.js:27:13
   at nextTask (node_modules/async/dist/async.js:5310:14)
   at next (node_modules/async/dist/async.js:5317:9)
   at node_modules/async/dist/async.js:958:16
   at next (node_modules/rimraf/rimraf.js:75:7)
   at CB (node_modules/rimraf/rimraf.js:111:9)
   at node_modules/rimraf/rimraf.js:137:14
   at FSReqWrap.oncomplete (fs.js:82:15)

2. Database
   "before each" hook:
   Uncaught InitializationError: Must provide db
   at new LevelUP (node_modules/levelup/lib/levelup.js:49:13)
   at LevelUP (node_modules/levelup/lib/levelup.js:33:12)
   at Function.Model.initStore (lib/model.js:79:100)
   at new Model (lib/model.js:52:35)
   at test/db.test.js:34:13
   at nextTask (node_modules/async/dist/async.js:5310:14)
   at next (node_modules/async/dist/async.js:5317:9)
   at node_modules/async/dist/async.js:958:16
   at next (node_modules/rimraf/rimraf.js:75:7)
   at CB (node_modules/rimraf/rimraf.js:111:9)
   at node_modules/rimraf/rimraf.js:137:14
   at FSReqWrap.oncomplete (fs.js:82:15)

3. Document
   Modifying documents
   Throw an error if a modifier is used with a non-object argument:
   AssertionError: expected [Function] to throw an error
   at Context. (test/document.test.js:352:22)

4. Schema
   "before each" hook:
   Uncaught InitializationError: Must provide db
   at new LevelUP (node_modules/levelup/lib/levelup.js:49:13)
   at LevelUP (node_modules/levelup/lib/levelup.js:33:12)
   at Function.Model.initStore (lib/model.js:79:100)
   at new Model (lib/model.js:52:35)
   at test/schema.test.js:29:13
   at nextTask (node_modules/async/dist/async.js:5310:14)
   at next (node_modules/async/dist/async.js:5317:9)
   at node_modules/async/dist/async.js:958:16
   at next (node_modules/rimraf/rimraf.js:75:7)
   at CB (node_modules/rimraf/rimraf.js:111:9)
   at node_modules/rimraf/rimraf.js:137:14
   at FSReqWrap.oncomplete (fs.js:82:15)