#509: tests
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function f() {
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var arr = [];
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var iters = 1500;
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for (var i = 0; i < iters; i++) {
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arr.push(i);
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if (i % 2 === 0)
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assertEq(arr.shift(), i / 2);
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}
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assertEq(arr.length, iters / 2);
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for (var i = iters / 2; i < iters; i++)
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assertEq(arr.shift(), i);
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assertEq(arr.length, 0);
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}
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f();
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// Always use the per-element barrier.
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gczeal(12);
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function f() {
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var arr = [];
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for (var i = 0; i < 1000; i++)
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arr.push(i);
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gc(); // Ensure arr is tenured.
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// Now store a nursery object somewhere in the array, shift elements,
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// trigger a GC, and check the post barrier kept the object alive.
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for (var i = 0; i < 20; i++)
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arr.shift();
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for (var i = 0; i < 40; i++)
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arr[900] = {x: i};
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for (var i = 0; i < 10; i++)
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arr.shift();
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gc();
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assertEq(arr[890].x, 39);
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}
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f();
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// Always use the per-element barrier.
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gczeal(12);
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function f() {
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var arr = [];
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for (var i = 0; i < 1000; i++)
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arr.push(i);
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gc(); // Ensure arr is tenured.
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for (var i = 0; i < 10; i++)
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arr.shift();
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// Add a nursery object, shift all elements, and trigger a GC to ensure
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// the post barrier doesn't misbehave.
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for (var j = 0; j < 40; j++)
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arr[500] = {x: j};
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while (arr.length > 0)
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arr.shift();
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gc();
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return arr;
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}
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f();
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function f() {
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var arr = [];
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for (var i = 0; i < 2; i++) {
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for (var j = 0; j < 90000; j++)
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arr.push(j);
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for (var j = 0; j < 90000; j++)
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assertEq(arr.shift(), j);
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assertEq(arr.length, 0);
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}
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}
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f();
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function testFreeze() {
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var arr = [];
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for (var i = 0; i < 20; i++)
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arr.push(i);
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for (var i = 0; i < 10; i++)
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arr.shift();
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Object.freeze(arr);
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assertEq(arr.length, 10);
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arr[0] = -1;
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assertEq(arr[0], 10);
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}
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testFreeze();
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testFreeze();
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function testCopyOnWrite() {
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var arr = [1, 2, 3, 4, 5, 6, 7, 8, 9];
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for (var i = 0; i < 5; i++)
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assertEq(arr.shift(), i + 1);
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assertEq(arr.toString(), "6,7,8,9");
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}
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testCopyOnWrite();
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testCopyOnWrite();
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function testNonWritableLength() {
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var arr = [];
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for (var i = 0; i < 20; i++)
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arr.push(i);
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Object.defineProperty(arr, "length", {writable: false, value: arr.length});
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var ex;
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try {
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arr.shift();
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} catch(e) {
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ex = e;
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}
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assertEq(ex instanceof TypeError, true);
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assertEq(arr.length, 20);
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}
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testNonWritableLength();
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testNonWritableLength();
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// Test incremental GC slices and shifted elements.
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function f() {
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var arr = [];
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for (var i = 0; i < 1000; i++)
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arr.push({x: i});
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var arr2 = [];
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for (var i = 0; i < 1000; i++) {
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gcslice(900);
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var o = arr.shift();
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assertEq(o.x, i);
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arr2.push(o);
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}
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gc();
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for (var i = 0; i < 1000; i++)
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assertEq(arr2[i].x, i);
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}
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f();
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/*
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* Any copyright is dedicated to the Public Domain.
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* http://creativecommons.org/licenses/publicdomain/
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*/
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// `this` must be object coercable.
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for (let badThis of [null, undefined]) {
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assertThrowsInstanceOf(() => {
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String.prototype.padStart.call(badThis, 42, "oups");
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}, TypeError);
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assertThrowsInstanceOf(() => {
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String.prototype.padEnd.call(badThis, 42, "oups");
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}, TypeError);
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}
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let proxy = new Proxy({}, {
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get(t, name) {
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if (name === Symbol.toPrimitive || name === "toString") return;
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if (name === "valueOf") return () => 42;
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throw "This should not be reachable";
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}
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});
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assertEq("42bloop", String.prototype.padEnd.call(proxy, 7, "bloopie"));
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// maxLength must convert to an integer
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assertEq("lame", "lame".padStart(0, "foo"));
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assertEq("lame", "lame".padStart(0.1119, "foo"));
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assertEq("lame", "lame".padStart(-0, "foo"));
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assertEq("lame", "lame".padStart(NaN, "foo"));
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assertEq("lame", "lame".padStart(-1, "foo"));
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assertEq("lame", "lame".padStart({toString: () => 0}, "foo"));
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assertEq("lame", "lame".padEnd(0, "foo"));
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assertEq("lame", "lame".padEnd(0.1119, "foo"));
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assertEq("lame", "lame".padEnd(-0, "foo"));
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assertEq("lame", "lame".padEnd(NaN, "foo"));
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assertEq("lame", "lame".padEnd(-1, "foo"));
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assertEq("lame", "lame".padEnd({toString: () => 0}, "foo"));
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assertThrowsInstanceOf(() => {
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"lame".padStart(Symbol("9900"), 0);
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}, TypeError);
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assertThrowsInstanceOf(() => {
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"lame".padEnd(Symbol("9900"), 0);
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}, TypeError);
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// The fill argument must be string coercable.
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assertEq("nulln.", ".".padStart(6, null));
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assertEq(".nulln", ".".padEnd(6, null));
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assertEq("[obje.", ".".padStart(6, {}));
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assertEq(".[obje", ".".padEnd(6, {}));
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assertEq("1,2,3.", ".".padStart(6, [1, 2, 3]));
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assertEq(".1,2,3", ".".padEnd(6, [1, 2, 3]));
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assertEq("aaaaa.", ".".padStart(6, {toString: () => "a"}));
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assertEq(".aaaaa", ".".padEnd(6, {toString: () => "a"}));
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// undefined is converted to " "
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assertEq(" .", ".".padStart(6, undefined));
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assertEq(". ", ".".padEnd(6, undefined));
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assertEq(" .", ".".padStart(6));
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assertEq(". ", ".".padEnd(6));
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// The empty string has no effect
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assertEq("Tilda", "Tilda".padStart(100000, ""));
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assertEq("Tilda", "Tilda".padEnd(100000, ""));
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assertEq("Tilda", "Tilda".padStart(100000, {toString: () => ""}));
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assertEq("Tilda", "Tilda".padEnd(100000, {toString: () => ""}));
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// Test repetition against a bruteforce implementation
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let filler = "space";
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let truncatedFiller = "";
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for (let i = 0; i < 2500; i++) {
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truncatedFiller += filler[i % filler.length];
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assertEq(truncatedFiller + "goto", "goto".padStart(5 + i, filler));
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assertEq("goto" + truncatedFiller, "goto".padEnd(5 + i, filler));
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}
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// [Argument] Length
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assertEq(1, String.prototype.padStart.length)
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assertEq(1, String.prototype.padEnd.length)
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if (typeof reportCompare === "function")
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reportCompare(true, true);
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