src/third_party/mozjs-45/js/src/tests/ecma_6/TypedArray/indexOf-and-lastIndexOf.js

const constructors = [
    Int8Array,
    Uint8Array,
    Uint8ClampedArray,
    Int16Array,
    Uint16Array,
    Int32Array,
    Uint32Array,
    Float32Array,
    Float64Array ];

if (typeof SharedArrayBuffer != "undefined")
    constructors.push(sharedConstructor(Int8Array),
		      sharedConstructor(Uint8Array),
		      sharedConstructor(Int16Array),
		      sharedConstructor(Uint16Array),
		      sharedConstructor(Int32Array),
		      sharedConstructor(Uint32Array),
		      sharedConstructor(Float32Array),
		      sharedConstructor(Float64Array));

// Tests for TypedArray#indexOf.
for (var constructor of constructors) {
    assertEq(constructor.prototype.indexOf.length, 1);

    // Works with one argument.
    assertEq(new constructor([1, 2, 3, 4, 5]).indexOf(0), -1);
    assertEq(new constructor([1, 2, 3, 4, 5]).indexOf(1), 0);
    assertEq(new constructor([1, 2, 3, 4, 5]).indexOf(5), 4);
    assertEq(new constructor([1, 2, 3, 4, 5]).indexOf(6), -1);
    assertEq(new constructor([1, 2, 1, 2, 1]).indexOf(1), 0);

    if (isFloatingConstructor(constructor)) {
        assertEq(new constructor([NaN, 0, -0]).indexOf(NaN), -1);
        assertEq(new constructor([NaN, 0, -0]).indexOf(0), 1);
        assertEq(new constructor([NaN, 0, -0]).indexOf(-0), 1);
    } else {
        // [NaN, 0, -0] will be coerced to [0, 0, 0]
        assertEq(new constructor([NaN, 0, -0]).indexOf(NaN), -1);
        assertEq(new constructor([NaN, 0, -0]).indexOf(0), 0);
        assertEq(new constructor([NaN, 0, -0]).indexOf(-0), 0);
    }

    // Works with two arguments.
    assertEq(new constructor([1, 2, 3, 4, 5]).indexOf(1, 1), -1);
    assertEq(new constructor([1, 2, 3, 4, 5]).indexOf(1, -100), 0);
    assertEq(new constructor([1, 2, 3, 4, 5]).indexOf(3, 100), -1);
    assertEq(new constructor([1, 2, 3, 4, 5]).indexOf(5, -1), 4);
    assertEq(new constructor([1, 2, 1, 2, 1]).indexOf(1, 2), 2);
    assertEq(new constructor([1, 2, 1, 2, 1]).indexOf(1, -2), 4);

    // Throws if `this` isn't a TypedArray.
    var invalidReceivers = [undefined, null, 1, false, "", Symbol(), [], {}, /./,
                            new Proxy(new constructor(), {})];
    invalidReceivers.forEach(invalidReceiver => {
        assertThrowsInstanceOf(() => {
            constructor.prototype.indexOf.call(invalidReceiver);
        }, TypeError, "Assert that indexOf fails if this value is not a TypedArray");
    });

    // test that this.length is never called
    assertEq(Object.defineProperty(new constructor([0, 1, 2, 3, 5]), "length", {
        get() {
            throw new Error("length accessor called");
        }
    }).indexOf(1), 1);
}

assertEq(new Float32Array([.1, .2, .3]).indexOf(.2), -1);
assertEq(new Float32Array([.1, .2, .3]).indexOf(Math.fround(.2)), 1);
assertEq(new Float64Array([.1, .2, .3]).indexOf(.2), 1);

// Tests for TypedArray#lastIndexOf.
for (var constructor of constructors) {

    assertEq(constructor.prototype.lastIndexOf.length, 1);

    // Works with one arguments.
    assertEq(new constructor([1, 2, 3, 4, 5]).lastIndexOf(0), -1);
    assertEq(new constructor([1, 2, 3, 4, 5]).lastIndexOf(1), 0);
    assertEq(new constructor([1, 2, 3, 4, 5]).lastIndexOf(5), 4);
    assertEq(new constructor([1, 2, 3, 4, 5]).lastIndexOf(6), -1);
    assertEq(new constructor([1, 2, 1, 2, 1]).lastIndexOf(1), 4);

    if (isFloatingConstructor(constructor)) {
        assertEq(new constructor([NaN, 0, -0]).lastIndexOf(NaN), -1);
        assertEq(new constructor([NaN, 0, -0]).lastIndexOf(0), 2);
        assertEq(new constructor([NaN, 0, -0]).lastIndexOf(-0), 2);
    } else {
        // [NaN, 0, -0] will be coerced to [0, 0, 0].
        assertEq(new constructor([NaN, 0, -0]).lastIndexOf(NaN), -1);
        assertEq(new constructor([NaN, 0, -0]).lastIndexOf(0), 2);
        assertEq(new constructor([NaN, 0, -0]).lastIndexOf(-0), 2);
    }

    // Works with two arguments.
    assertEq(new constructor([1, 2, 3, 4, 5]).lastIndexOf(1, 1), 0);
    assertEq(new constructor([1, 2, 3, 4, 5]).lastIndexOf(1, -100), -1);
    assertEq(new constructor([1, 2, 3, 4, 5]).lastIndexOf(3, 100), 2);
    assertEq(new constructor([1, 2, 3, 4, 5]).lastIndexOf(5, -1), 4);
    assertEq(new constructor([1, 2, 1, 2, 1]).lastIndexOf(1, 2), 2);
    assertEq(new constructor([1, 2, 1, 2, 1]).lastIndexOf(1, -2), 2);

    // Throws if `this` isn't a TypedArray.
    var invalidReceivers = [undefined, null, 1, false, "", Symbol(), [], {}, /./,
                            new Proxy(new constructor(), {})];
    invalidReceivers.forEach(invalidReceiver => {
        assertThrowsInstanceOf(() => {
            constructor.prototype.lastIndexOf.call(invalidReceiver);
        }, TypeError, "Assert that lastIndexOf fails if this value is not a TypedArray");
    });

    // Test that the length getter is never called.
    assertEq(Object.defineProperty(new constructor([0, 1, 2, 3, 5]), "length", {
        get() {
            throw new Error("length accessor called");
        }
    }).lastIndexOf(1), 1);
}

assertEq(new Float32Array([.1, .2, .3]).lastIndexOf(.2), -1);
assertEq(new Float32Array([.1, .2, .3]).lastIndexOf(Math.fround(.2)), 1);
assertEq(new Float64Array([.1, .2, .3]).lastIndexOf(.2), 1);

if (typeof reportCompare === "function")
    reportCompare(true, true);