Show relevant parts of the object/array for t.true/t.false assertion output #1205

@vadimdemedes thanks for pointing it out. I actually faced this thing last night and was thinking to open an issue.

My suggestion in #1204 is to show the type of arr but nothing else.

Guys, do you have any update regarding this request?

I'm facing the same issue. If I use t.is(resetBehaviour.calledOnce, false); it outputs this:

51:     wrapper.unmount();
   52:     t.is(resetBehaviour.calledOnce, false);
   53: });

  Difference:

  - true
  + false

  Test.is (src/common/components/App/App.test.js:52:7)
  processEmit [as emit] (node_modules/nyc/node_modules/signal-exit/index.js:155:32)
  processEmit [as emit] (node_modules/nyc/node_modules/signal-exit/index.js:155:32)

But if i use t.false(resetBehaviour.calledOnce) it returns this huge output:

51:     wrapper.unmount();
   52:     t.false(resetBehaviour.calledOnce);
   53: });

  Value is not `false`:

  true

  resetBehaviour.calledOnce
  => true

  resetBehaviour
  => Function proxy {
    args: [
      [],
    ],
    callCount: 1,
    callIds: [
      4,
    ],
    called: true,
    calledOnce: true,
    calledThrice: false,
    calledTwice: false,
    displayName: 'spy',
    errorsWithCallStack: [
      Error {
        message: '',
      },
    ],
    exceptions: [
      undefined,
    ],
    firstCall: {
      args: [],
      callId: 4,
      callback: undefined,
      errorWithCallStack: Error {
        message: '',
      },
      exception: undefined,
      lastArg: undefined,
      proxy: [Circular],
      returnValue: undefined,
      thisValue: {
        resetBehaviour: [Circular],
      },
    },
    id: 'spy#3',
    instantiateFake: Function create {},
    isSinonProxy: true,
    lastCall: {
      args: [],
      callId: 4,
      callback: undefined,
      errorWithCallStack: Error {
        message: '',
      },
      exception: undefined,
      lastArg: undefined,
      proxy: [Circular],
      returnValue: undefined,
      thisValue: {
        resetBehaviour: [Circular],
      },
    },
    notCalled: false,
    returnValues: [
      undefined,
    ],
    secondCall: null,
    thirdCall: null,
    thisValues: [
      {
        resetBehaviour: [Circular],
      },
    ],
    toString: Function toString {},
  }

  Test.t [as fn] (src/common/components/App/App.test.js:52:5)
  processEmit [as emit] (node_modules/nyc/node_modules/signal-exit/index.js:155:32)
  processEmit [as emit] (node_modules/nyc/node_modules/signal-exit/index.js:155:32)

I'm using sinon spies and the log output is completely uselesss in this case.

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FWIW, AVA no longer prints output like this, though it's supported through @ava/babel. I'm going to close this issue since I don't think we'll make any progress on this one way or the other.