Mock dexie

[raineorshine]

I was not able to successfully mock dexie in setupTests.js. I tried conditionally mocking within db.js itself, which fixes initDB, but the tests still fail. All db calls have to be ignored until this is solved.

if (process.env.NODE_ENV === 'test') {
  Dexie.dependencies.indexedDB = require('fake-indexeddb')
  Dexie.dependencies.IDBKeyRange = require('fake-indexeddb/lib/FDBKeyRange')
}

Based on dexie/Dexie.js#495 (comment)

Also tried this to no avail:

require('fake-indexeddb/auto')

[TiagoSilvaPereira]

I'm with problems too trying to mock using fake-indexeddb:

TypeError: Cannot read property 'all' of undefined
    at snapShot (/home/kingofcode/code/tools/pistache/dist/js/webpack:/node_modules/dexie/dist/dexie.es.js:1307:1)
    at Module../node_modules/dexie/dist/dexie.es.js (/home/kingofcode/code/tools/pistache/dist/js/webpack:/node_modules/dexie/dist/dexie.es.js:835:1)
    at __webpack_require__ (/home/kingofcode/code/tools/pistache/dist/js/webpack:/webpack/bootstrap:19:1)
    at Object../tests/unit/base/Seeder.js (/home/kingofcode/code/tools/pistache/dist/js/webpack:/tests/unit/base/Seeder.js:1:1)
    at __webpack_require__ (/home/kingofcode/code/tools/pistache/dist/js/webpack:/webpack/bootstrap:19:1)
    at Object../tests/unit/schema/relationships.spec.js (/home/kingofcode/code/tools/pistache/dist/js/webpack:/tests/unit/schema/relationships.spec.js:2:1)
    at __webpack_require__ (/home/kingofcode/code/tools/pistache/dist/js/webpack:/webpack/bootstrap:19:1)
    at run (/home/kingofcode/code/tools/pistache/dist/js/webpack:/node_modules/mochapack/lib/entry.js:3:1)
    at Array.forEach (<anonymous>)
    at Object../node_modules/mochapack/lib/entry.js (/home/kingofcode/code/tools/pistache/dist/js/webpack:/node_modules/mochapack/lib/entry.js:10:1)
    at __webpack_require__ (/home/kingofcode/code/tools/pistache/dist/js/webpack:/webpack/bootstrap:19:1)
    at /home/kingofcode/code/tools/pistache/dist/js/webpack:/webpack/bootstrap:83:1
    at Object.<anonymous> (/home/kingofcode/code/tools/pistache/dist/js/main.js:87:10)
    at Module._compile (internal/modules/cjs/loader.js:1158:30)
    at Object._module2.default._extensions.<computed> [as .js] (/home/kingofcode/code/tools/pistache/node_modules/mochapack/src/util/registerRequireHook.js:99:12)
    at Module.load (internal/modules/cjs/loader.js:1002:32)
    at Function.Module._load (internal/modules/cjs/loader.js:901:14)
    at Module.require (internal/modules/cjs/loader.js:1044:19)
    at require (internal/modules/cjs/helpers.js:77:18)
    at /home/kingofcode/code/tools/pistache/node_modules/mocha/lib/mocha.js:334:36
    at Array.forEach (<anonymous>)
    at Mocha.loadFiles (/home/kingofcode/code/tools/pistache/node_modules/mocha/lib/mocha.js:331:14)
    at Mocha.run (/home/kingofcode/code/tools/pistache/node_modules/mocha/lib/mocha.js:809:10)
    at cb (/home/kingofcode/code/tools/pistache/node_modules/mochapack/src/runner/TestRunner.js:96:21)
    at /home/kingofcode/code/tools/pistache/node_modules/mochapack/src/webpack/compiler/registerReadyCallback.js:12:7
    at AsyncSeriesHook.eval [as callAsync] (eval at create (/home/kingofcode/code/tools/pistache/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:43:1)
    at AsyncSeriesHook.lazyCompileHook (/home/kingofcode/code/tools/pistache/node_modules/tapable/lib/Hook.js:154:20)
    at /home/kingofcode/code/tools/pistache/node_modules/webpack/lib/Compiler.js:304:22
    at Compiler.emitRecords (/home/kingofcode/code/tools/pistache/node_modules/webpack/lib/Compiler.js:499:39)
    at /home/kingofcode/code/tools/pistache/node_modules/webpack/lib/Compiler.js:298:10
    at /home/kingofcode/code/tools/pistache/node_modules/webpack/lib/Compiler.js:485:14
    at eval (eval at create (/home/kingofcode/code/tools/pistache/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:14:1)
    at /home/kingofcode/code/tools/pistache/node_modules/copy-webpack-plugin/dist/index.js:115:7
    at AsyncSeriesHook.eval [as callAsync] (eval at create (/home/kingofcode/code/tools/pistache/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:10:1)
    at AsyncSeriesHook.lazyCompileHook (/home/kingofcode/code/tools/pistache/node_modules/tapable/lib/Hook.js:154:20)
    at /home/kingofcode/code/tools/pistache/node_modules/webpack/lib/Compiler.js:482:27
    at /home/kingofcode/code/tools/pistache/node_modules/neo-async/async.js:2818:7
    at done (/home/kingofcode/code/tools/pistache/node_modules/neo-async/async.js:3522:9)
    at AsyncSeriesHook.eval [as callAsync] (eval at create (/home/kingofcode/code/tools/pistache/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:4:1)
    at /home/kingofcode/code/tools/pistache/node_modules/webpack/lib/Compiler.js:464:33
    at MemoryFileSystem.writeFile (/home/kingofcode/code/tools/pistache/node_modules/memory-fs/lib/MemoryFileSystem.js:328:9)
    at writeOut (/home/kingofcode/code/tools/pistache/node_modules/webpack/lib/Compiler.js:462:30)
    at Immediate._onImmediate (/home/kingofcode/code/tools/pistache/node_modules/memory-fs/lib/MemoryFileSystem.js:288:4)
    at processImmediate (internal/timers.js:456:21)
    at process.topLevelDomainCallback (domain.js:137:15)

 ERROR  mochapack exited with code 1.
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! pistache@0.1.0 test:unit: `vue-cli-service test:unit`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the pistache@0.1.0 test:unit script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/kingofcode/.npm/_logs/2020-06-04T19_27_47_537Z-debug.log

[raineorshine]

@shresthabijay Could you take a stab at this? If we can mock dexie then we can expand our test coverage to include the local db.

[shresthabijay]

@shresthabijay Could you take a stab at this? If we can mock dexie then we can expand our test coverage to include the local db.

Sure!