Tests that console logging dumps proper messages.

console-dir.js:14 Array(2)
    0: "test1"
    1: "test2"
    length: 2
    [[Prototype]]: Array(0)
console-dir.js:15 NodeList(1)
    0: html
    length: 1
    [[Prototype]]: NodeList
console-dir.js:16 XPathResult
    booleanValue: (...)
    invalidIteratorState: false
    numberValue: (...)
    resultType: 4
    singleNodeValue: (...)
    snapshotLength: (...)
    stringValue: (...)
    [[Prototype]]: XPathResult
console-dir.js:26 Object
    "": ""
    "  ": "  "
    " a b ": " a b "
    $foo5_: 0
    "a↵↵b↵c": "a\n\nb\nc"
    c d: "c d"
    negZero: -0
    [[Prototype]]: Object
console-dir.js:29 ƒ anonymous()
    length: 0
    name: ""
    prototype: {}
    arguments: null
    caller: null
    [[FunctionLocation]]: console-dir.js:29
    [[Prototype]]: ƒ ()
    [[Scopes]]: Scopes[1]
console-dir.js:33 inner
    [[Prototype]]: Object
console-dir.js:36 Object
    No properties
console-dir.js:37 Object
    foo: 
        No properties
    [[Prototype]]: Object
console-dir.js:39 ƒ __proto__()
    length: 0
    name: "get __proto__"
    arguments: (...)
    caller: (...)
    [[Prototype]]: ƒ ()
    [[Scopes]]: Scopes[0]
console-dir.js:44 Uint8Array(400000000)
    [0 … 99999999]
    [100000000 … 199999999]
    [200000000 … 299999999]
    [300000000 … 399999999]
    PASS: "Non-element properties should be displayed."
    buffer: ArrayBuffer(400000000)
    byteLength: 400000000
    byteOffset: 0
    length: 400000000
    Symbol(Symbol.toStringTag): "Uint8Array"
    [[Prototype]]: TypedArray
console-dir.js:49 Event
    isTrusted: false
    timeStamp: 0
    bubbles: false
    cancelBubble: false
    cancelable: false
    composed: false
    currentTarget: null
    defaultPrevented: false
    eventPhase: 0
    returnValue: true
    srcElement: null
    target: null
    type: ""
    [[Prototype]]: Event