AssertionError: undefined deepEqual 1 when porting functions/datastore to local setup

[kaspermarstal]

I am prototyping a backend based on the GoogleCloudPlatform/nodejs-docs-samples/functions/datastore but run to problems porting the code to a local setup. A naive approach consisting of

1. Copy functions/datastore to a new directory
2. Add let sinon = require('sinon') and let assert = require('power-assert') to test/index.test.js (these were previously defined in the global scope by test/setup.js
3. Change package.json test command to mocha test/index.test.js

yields errors like this:

  1) functions:datastore set: Handles save error:
     AssertionError: undefined deepEqual 1

Do you have any suggestions as to why I see this error? And what needs to be changed/added to my own setup? A minimum working example that reproduces the error can be found at kaspermarstal/nodejs-docs-samples-functions-datastore.

The full error report:

$ npm test

> [email protected] test /Users/kasper/Development/datastore
> mocha test/*.test.js



  functions:datastore
    ✓ set: Set fails without a value
    ✓ set: Set fails without a key
    ✓ set: Set fails without a kind
Error: error
    at Context.it (/Users/kasper/Development/datastore/test/index.test.js:102:19)
    at callFn (/Users/kasper/Development/datastore/node_modules/mocha/lib/runnable.js:345:21)
    at Test.Runnable.run (/Users/kasper/Development/datastore/node_modules/mocha/lib/runnable.js:337:7)
    at Runner.runTest (/Users/kasper/Development/datastore/node_modules/mocha/lib/runner.js:444:10)
    at /Users/kasper/Development/datastore/node_modules/mocha/lib/runner.js:550:12
    at next (/Users/kasper/Development/datastore/node_modules/mocha/lib/runner.js:361:14)
    at /Users/kasper/Development/datastore/node_modules/mocha/lib/runner.js:371:7
    at next (/Users/kasper/Development/datastore/node_modules/mocha/lib/runner.js:295:14)
    at Immediate.<anonymous> (/Users/kasper/Development/datastore/node_modules/mocha/lib/runner.js:339:5)
    at runCallback (timers.js:637:20)
    at tryOnImmediate (timers.js:610:5)
    at processImmediate [as _immediateCallback] (timers.js:582:5)
    1) set: Handles save error
    ✓ set: Set saves an entity
    ✓ get: Get fails without a key
    ✓ get: Get fails without a kind
Error: error
    at Context.it (/Users/kasper/Development/datastore/test/index.test.js:158:19)
    at callFn (/Users/kasper/Development/datastore/node_modules/mocha/lib/runnable.js:345:21)
    at Test.Runnable.run (/Users/kasper/Development/datastore/node_modules/mocha/lib/runnable.js:337:7)
    at Runner.runTest (/Users/kasper/Development/datastore/node_modules/mocha/lib/runner.js:444:10)
    at /Users/kasper/Development/datastore/node_modules/mocha/lib/runner.js:550:12
    at next (/Users/kasper/Development/datastore/node_modules/mocha/lib/runner.js:361:14)
    at /Users/kasper/Development/datastore/node_modules/mocha/lib/runner.js:371:7
    at next (/Users/kasper/Development/datastore/node_modules/mocha/lib/runner.js:295:14)
    at Immediate.<anonymous> (/Users/kasper/Development/datastore/node_modules/mocha/lib/runner.js:339:5)
    at runCallback (timers.js:637:20)
    at tryOnImmediate (timers.js:610:5)
    at processImmediate [as _immediateCallback] (timers.js:582:5)
    2) get: Handles get error
Error: No entity found for key Task/sampletask1.
    at datastore.get.then (/Users/kasper/Development/datastore/index.js:96:15)
    3) get: Fails when entity does not exist
    ✓ get: Finds an entity
    ✓ del: Delete fails without a key
    ✓ del: Delete fails without a kind
Error: error
    at Context.it (/Users/kasper/Development/datastore/test/index.test.js:234:19)
    at callFn (/Users/kasper/Development/datastore/node_modules/mocha/lib/runnable.js:345:21)
    at Test.Runnable.run (/Users/kasper/Development/datastore/node_modules/mocha/lib/runnable.js:337:7)
    at Runner.runTest (/Users/kasper/Development/datastore/node_modules/mocha/lib/runner.js:444:10)
    at /Users/kasper/Development/datastore/node_modules/mocha/lib/runner.js:550:12
    at next (/Users/kasper/Development/datastore/node_modules/mocha/lib/runner.js:361:14)
    at /Users/kasper/Development/datastore/node_modules/mocha/lib/runner.js:371:7
    at next (/Users/kasper/Development/datastore/node_modules/mocha/lib/runner.js:295:14)
    at Immediate.<anonymous> (/Users/kasper/Development/datastore/node_modules/mocha/lib/runner.js:339:5)
    at runCallback (timers.js:637:20)
    at tryOnImmediate (timers.js:610:5)
    at processImmediate [as _immediateCallback] (timers.js:582:5)
    4) del: Handles delete error
    ✓ del: Deletes an entity


  10 passing (49ms)
  4 failing

  1) functions:datastore set: Handles save error:
     AssertionError: undefined deepEqual 1
      at Decorator._callFunc (node_modules/empower-core/lib/decorator.js:110:20)
      at Decorator.concreteAssert (node_modules/empower-core/lib/decorator.js:103:17)
      at Function.decoratedAssert [as deepEqual] (node_modules/empower-core/lib/decorate.js:51:30)
      at sample.program.set.then.catch (test/index.test.js:113:16)
      at runMicrotasksCallback (internal/process/next_tick.js:58:5)
      at _combinedTickCallback (internal/process/next_tick.js:67:7)
      at process._tickCallback (internal/process/next_tick.js:98:9)

  2) functions:datastore get: Handles get error:
     AssertionError: undefined deepEqual 1
      at Decorator._callFunc (node_modules/empower-core/lib/decorator.js:110:20)
      at Decorator.concreteAssert (node_modules/empower-core/lib/decorator.js:103:17)
      at Function.decoratedAssert [as deepEqual] (node_modules/empower-core/lib/decorate.js:51:30)
      at sample.program.get.then.catch (test/index.test.js:169:16)
      at runMicrotasksCallback (internal/process/next_tick.js:58:5)
      at _combinedTickCallback (internal/process/next_tick.js:67:7)
      at process._tickCallback (internal/process/next_tick.js:98:9)

  3) functions:datastore get: Fails when entity does not exist:
     AssertionError: undefined deepEqual 1
      at Decorator._callFunc (node_modules/empower-core/lib/decorator.js:110:20)
      at Decorator.concreteAssert (node_modules/empower-core/lib/decorator.js:103:17)
      at Function.decoratedAssert [as deepEqual] (node_modules/empower-core/lib/decorate.js:51:30)
      at sample.program.get.then.catch (test/index.test.js:190:16)

  4) functions:datastore del: Handles delete error:
     AssertionError: undefined deepEqual 1
      at Decorator._callFunc (node_modules/empower-core/lib/decorator.js:110:20)
      at Decorator.concreteAssert (node_modules/empower-core/lib/decorator.js:103:17)
      at Function.decoratedAssert [as deepEqual] (node_modules/empower-core/lib/decorate.js:51:30)
      at sample.program.del.then.catch (test/index.test.js:245:16)
      at runMicrotasksCallback (internal/process/next_tick.js:58:5)
      at _combinedTickCallback (internal/process/next_tick.js:67:7)
      at process._tickCallback (internal/process/next_tick.js:98:9)



npm ERR! Test failed.  See above for more details.

[jmdobry]

The error you're seeing is happening because test/setup.js doesn't just load sinon and power-assert, it also spies on console.log and console.error so that the tests can make assertions about what's been logged by the samples.

[kaspermarstal]

Thank you very much it is up and running now!