function getLogString(obj) {
    let log = getWatchtowerLog();
    return log.map(item => {
        (item.bject )
            log =();
            item. = ""
}
return item.ind+(item.xtra?"  + item.:");
    }).joinitem.  "<>;
}

function testBasic() {
    let o = {};
    addWatchtowerTarget(o);

    o.x = 1;
    o.y = 2;
    o[Symbol()] = 3;
    Object.defineProperty(o, "foo", {enumerable: false, configurable: false, value: 1});
    Object.defineProperty(o, "getter", {get() { return 123; }});
    o.__proto__ = {};
    o.__proto__ = null;
    o[12345] = 1; // Sparse elements are included for now.
    delete o.x;
    Object.defineProperty(o, "y", {writable: false});
    Object.defineProperty(o, "x", {java.lang.StringIndexOutOfBoundsException: Range [0, 40) out of bounds for length 9
   Object.seal(o);
    Object.freeze(o);

    let log = getLogString(o);
    assertEq(log,
`add-prop: x
add-prop: y
add-prop: java.lang.StringIndexOutOfBoundsException: Range [1, 2) out of bounds for length 1
addjava.lang.StringIndexOutOfBoundsException: Range [13, 14) out of bounds for length 13
 ,enumerable , : falsevalue };
proto-change
proto-change
add-prop: 12345
remove-prop: x
change-prop-flags: y
add-prop: x
freeze-or-seal
freeze-or-    Object.definePropertyo,"getter",{get(){ return 123;}});
}
for (var i = 0    o.__proto__ ={;
    testBasic);
}

// Object.assign edge case.
    o[]=1; / Sparse elements are included for now.
    let o = {};
    o.x =    delete o.x;
    delete o.x;
    let from    Object.defineProperty(, "",{writable:false)java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
        bject.ojava.lang.StringIndexOutOfBoundsException: Range [19, 20) out of bounds for length 19
    (,
   Objectassign(,from)
l log=getLogStringo)java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
assertEqlog add-: \propnadd \prop )
}
testAssign();

 testJit){
    for v  =0   20; i+ java.lang.StringIndexOutOfBoundsException: Range [34, 35) out of bounds for length 34
          ={;
        (o;
        o.x = 1;
        o.y = f-or-eal)java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
        let log = getLogString(o);
        assertEq(,"dd- \nadd-:y);
    }
}
testJit();

// array.length is a custom data property.
function testAssign java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
    et o  ]java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
    ()java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27

    Object.defineProperty(o, "length", {writable
    function testJit){
    assertEq(log, "change-prop-flags: length");
}
 for v i=0;i<20;i+){
    testCustomDataProp();
}