otto/array_test.go

package otto

import (
	. "./terst"
	"testing"
	Time "time"
)

func TestArray(t *testing.T) {
	Terst(t)

	test := runTest()

	test(`
        var abc = [ undefined, "Nothing happens." ];
        abc.length;
    `, "2")

	test(`
		abc = ""+[0, 1, 2, 3];
		def = [].toString();
		ghi = [null, 4, "null"].toString();
	`)
	test("abc", "0,1,2,3")
	test("def", "")
	test("ghi", ",4,null")
	test(`new Array(0).length`, "0")
	test(`new Array(11).length`, "11")
	test(`new Array(11, 1).length`, "2")

	test(`
        abc = [0, 1, 2, 3];
        abc.xyzzy = "Nothing happens.";
        delete abc[1];
        var xyzzy = delete abc.xyzzy;
        [ abc, xyzzy, abc.xyzzy ];
    `, "0,,2,3,true,")

	test(`
        var abc = [0, 1, 2, 3, 4];
        abc.length = 2;
        abc;
    `, "0,1")

	test(`raise:
        [].length = 3.14159;
    `, "RangeError")

	test(`raise:
        new Array(3.14159);
    `, "RangeError")

	test(`
        Object.defineProperty(Array.prototype, "0", {
            value: 100,
            writable: false,
            configurable: true
        });
        abc = [101];
        abc.hasOwnProperty("0") && abc[0] === 101;
    `, "true")

	test(`
        abc = [,,undefined];
        [ abc.hasOwnProperty(0), abc.hasOwnProperty(1), abc.hasOwnProperty(2) ];
    `, "false,false,true")

	test(`
        abc = Object.getOwnPropertyDescriptor(Array, "prototype");
        [   [ typeof Array.prototype ],
            [ abc.writable, abc.enumerable, abc.configurable ] ];
    `, "object,false,false,false")

}

func TestArray_toString(t *testing.T) {
	Terst(t)

	{
		test := runTest()

		test(`
			Array.prototype.toString = function() {
				return "Nothing happens."
			}
			abc = Array.prototype.toString()
			def = [].toString()
			ghi = [null, 4, "null"].toString()
		`)
		test("abc", "Nothing happens.")
		test("def", "Nothing happens.")
		test("ghi", "Nothing happens.")

	}

	{
		test := runTest()

		test(`
			Array.prototype.join = undefined
			abc = Array.prototype.toString()
			def = [].toString()
			ghi = [null, 4, "null"].toString()
		`)
		test("abc", "[object Array]")
		test("def", "[object Array]")
		test("ghi", "[object Array]")
	}
}

func TestArray_toLocaleString(t *testing.T) {
	Terst(t)

	defer mockTimeLocal(Time.UTC)()

	test := runTest()

	test(`
        [ 3.14159, "abc", undefined, new Date(0) ].toLocaleString();
    `, "3.14159,abc,,1970-01-01 00:00:00")

	test(`raise:
        [ { toLocaleString: undefined } ].toLocaleString();
    `, "TypeError")
}

func TestArray_concat(t *testing.T) {
	Terst(t)

	test := runTest()

	test(`
		abc = [0, 1, 2]
		def = [-1, -2, -3]
		ghi = abc.concat(def)
		jkl = abc.concat(def, 3, 4, 5)
		mno = def.concat(-4, -5, abc)
	`)
	test("ghi", "0,1,2,-1,-2,-3")
	test("jkl", "0,1,2,-1,-2,-3,3,4,5")
	test("mno", "-1,-2,-3,-4,-5,0,1,2")
}

func TestArray_splice(t *testing.T) {
	Terst(t)

	test := runTest()

	test(`
		abc = [0, 1, 2]
		def = abc.splice(1, 2, 3, 4, 5)
        ghi = [].concat(abc)
        jkl = ghi.splice(17, 21, 7, 8, 9)
	`)
	test("abc", "0,3,4,5")
	test("def", "1,2")
	test("ghi", "0,3,4,5,7,8,9")
	test("jkl", "")
}

func TestArray_shift(t *testing.T) {
	Terst(t)

	test := runTest()

	test(`
		abc = [0, 1, 2]
		def = abc.shift()
		ghi = [].concat(abc)
		jkl = abc.shift()
		mno = [].concat(abc)
		pqr = abc.shift()
		stu = [].concat(abc)
		vwx = abc.shift()
	`)
	test("abc", "")
	test("def", "0")
	test("ghi", "1,2")
	test("jkl", "1")
	test("mno", "2")
	test("pqr", "2")
	test("stu", "")
	test("vwx", "undefined")
}

func TestArray_push(t *testing.T) {
	Terst(t)

	test := runTest()

	test(`
		abc = [0]
		def = abc.push(1)
		ghi = [].concat(abc)
		jkl = abc.push(2,3,4)
	`)
	test("abc", "0,1,2,3,4")
	test("def", "2")
	test("ghi", "0,1")
	test("jkl", "5")
}

func TestArray_pop(t *testing.T) {
	Terst(t)

	test := runTest()

	test(`
		abc = [0,1]
		def = abc.pop()
		ghi = [].concat(abc)
		jkl = abc.pop()
		mno = [].concat(abc)
		pqr = abc.pop()
	`)
	test("abc", "")
	test("def", "1")
	test("ghi", "0")
	test("jkl", "0")
	test("mno", "")
	test("pqr", "undefined")
}

func TestArray_slice(t *testing.T) {
	Terst(t)

	test := runTest()

	test(`
		abc = [0,1,2,3]
		def = abc.slice()
		ghi = abc.slice(1)
		jkl = abc.slice(3,-1)
		mno = abc.slice(2,-1)
		pqr = abc.slice(-1, -10)
	`)
	test("def", "0,1,2,3")
	test("ghi", "1,2,3")
	test("jkl", "")
	test("mno", "2")
	test("pqr", "")
	test(`abc.slice(2, 2)`, "")
	test(`abc.slice(2, 3)`, "2")

	test(`
		abc = { 0: 0, 1: 1, 2: 2, 3: 3 }
		abc.length = 4
		def = Array.prototype.slice.call(abc)
		ghi = Array.prototype.slice.call(abc,1)
		jkl = Array.prototype.slice.call(abc,3,-1)
		mno = Array.prototype.slice.call(abc,2,-1)
		pqr = Array.prototype.slice.call(abc,-1,-10)
	`)
	// Array.protoype.slice is generic
	test("def", "0,1,2,3")
	test("ghi", "1,2,3")
	test("jkl", "")
	test("mno", "2")
	test("pqr", "")
}

func TestArray_sliceArguments(t *testing.T) {
	Terst(t)

	test := runTest()

	test(`
		(function(){
			return Array.prototype.slice.call(arguments, 1)
		})({}, 1, 2, 3)
	`, "1,2,3")
}

func TestArray_unshift(t *testing.T) {
	Terst(t)

	test := runTest()

	test(`
		abc = []
		def = abc.unshift(0)
		ghi = [].concat(abc)
		jkl = abc.unshift(1,2,3,4)
	`)
	test("abc", "1,2,3,4,0")
	test("def", "1")
	test("ghi", "0")
	test("jkl", "5")
}

func TestArray_reverse(t *testing.T) {
	Terst(t)

	test := runTest()

	test(`
		abc = [0,1,2,3].reverse()
		def = [0,1,2].reverse()
	`)
	test("abc", "3,2,1,0")
	test("def", "2,1,0")
}

func TestArray_sort(t *testing.T) {
	Terst(t)

	test := runTest()

	test(`
		abc = [0,1,2,3].sort()
		def = [3,2,1,0].sort()
		ghi = [].sort()
		jkl = [0].sort()
		mno = [1,0].sort()
		pqr = [1,5,-10, 100, 8, 72, 401, 0.05].sort()
		stu = [1,5,-10, 100, 8, 72, 401, 0.05].sort(function(x, y){
			return x == y ? 0 : x < y ? -1 : 1
		})
	`)
	test("abc", "0,1,2,3")
	test("def", "0,1,2,3")
	test("ghi", "")
	test("jkl", "0")
	test("mno", "0,1")
	test("pqr", "-10,0.05,1,100,401,5,72,8")
	test("stu", "-10,0.05,1,5,8,72,100,401")
	test(`
        [ Array.prototype.sort.length ];
    `, "1")
}

func TestArray_isArray(t *testing.T) {
	Terst(t)

	test := runTest()
	test(`
       [ Array.isArray.length, Array.isArray(), Array.isArray([]), Array.isArray({}) ];
    `, "1,false,true,false")

	test(`
        [ Array.isArray(Math) ];
    `, "false")

}

func TestArray_indexOf(t *testing.T) {
	Terst(t)

	test := runTest()
	test(`['a', 'b', 'c', 'b'].indexOf('b')`, "1")
	test(`['a', 'b', 'c', 'b'].indexOf('b', 2)`, "3")
	test(`['a', 'b', 'c', 'b'].indexOf('b', -2)`, "3")
	test(`
		Object.prototype.indexOf = Array.prototype.indexOf;
		var abc = {0: 'a', 1: 'b', 2: 'c', length: 3};
		abc.indexOf('c');
	`, "2")
	test(`[true].indexOf(true, "-Infinity")`, "0")

	test(`
        var target = {};
        Math[3] = target;
        Math.length = 5;
        [ Array.prototype.indexOf.call(Math, target) === 3 ];
    `, "true")

	test(`
        var _NaN = NaN;
        var abc = new Array("NaN", undefined, 0, false, null, {toString:function(){return NaN}}, "false", _NaN, NaN);
        [ abc.indexOf(NaN) ];
    `, "-1")

	test(`
        var abc = {toString:function (){return 0}};
        var def = 1;
        var ghi = -(4/3);
        var jkl = new Array(false, undefined, null, "0", abc, -1.3333333333333, "string", -0, true, +0, def, 1, 0, false, ghi, -(4/3));
        [ jkl.indexOf(-(4/3)), jkl.indexOf(0), jkl.indexOf(-0), jkl.indexOf(1) ];
    `, "14,7,7,10")
}

func TestArray_lastIndexOf(t *testing.T) {
	Terst(t)

	test := runTest()
	test(`['a', 'b', 'c', 'b'].lastIndexOf('b')`, "3")
	test(`['a', 'b', 'c', 'b'].lastIndexOf('b', 2)`, "1")
	test(`['a', 'b', 'c', 'b'].lastIndexOf('b', -2)`, "1")
	test(`
		Object.prototype.lastIndexOf = Array.prototype.lastIndexOf;
        var abc = {0: 'a', 1: 'b', 2: 'c', 3: 'b', length: 4};
		abc.lastIndexOf('b');
	`, "3")

	test(`
        var target = {};
        Math[3] = target;
        Math.length = 5;
        [ Array.prototype.lastIndexOf.call(Math, target) === 3 ];
    `, "true")

	test(`
        var _NaN = NaN;
        var abc = new Array("NaN", undefined, 0, false, null, {toString:function(){return NaN}}, "false", _NaN, NaN);
        [ abc.lastIndexOf(NaN) ];
    `, "-1")

	test(`
        var abc = {toString:function (){return 0}};
        var def = 1;
        var ghi = -(4/3);
        var jkl = new Array(false, undefined, null, "0", abc, -1.3333333333333, "string", -0, true, +0, def, 1, 0, false, ghi, -(4/3));
        [ jkl.lastIndexOf(-(4/3)), jkl.indexOf(0), jkl.indexOf(-0), jkl.indexOf(1) ];
    `, "15,7,7,10")
}

func TestArray_every(t *testing.T) {
	Terst(t)

	test := runTest()
	test(`raise: [].every()`, "TypeError")
	test(`raise: [].every("abc")`, "TypeError")
	test(`[].every(function() { return false })`, "true")
	test(`[1,2,3].every(function() { return false })`, "false")
	test(`[1,2,3].every(function() { return true })`, "true")
	test(`[1,2,3].every(function(_, index) { if (index === 1) return true })`, "false")

	test(`
        var abc = function(value, index, object) {
            return ('[object Math]' !== Object.prototype.toString.call(object));
        };

        Math.length = 1;
        Math[0] = 1;
        [ !Array.prototype.every.call(Math, abc) ];
    `, "true")

	test(`
        var def = false;

        var abc = function(value, index, object) {
            def = true;
            return this === Math;
        };

        [ [11].every(abc, Math) && def ];
    `, "true")

	test(`
        var def = false;

        var abc = function(value, index, object) {
            def = true;
            return Math;
        };

        [ [11].every(abc) && def ];
    `, "true")
}

func TestArray_some(t *testing.T) {
	Terst(t)

	test := runTest()
	test(`raise: [].some("abc")`, "TypeError")
	test(`[].some(function() { return true })`, "false")
	test(`[1,2,3].some(function() { return false })`, "false")
	test(`[1,2,3].some(function() { return true })`, "true")
	test(`[1,2,3].some(function(_, index) { if (index === 1) return true })`, "true")
}

func TestArray_forEach(t *testing.T) {
	Terst(t)

	test := runTest()
	test(`raise: [].forEach("abc")`, "TypeError")
	test(`
        var abc = 0;
        [].forEach(function(value) {
            abc += value;
        });
        abc;
    `, "0")
	test(`
        abc = 0;
        var def = [];
        [1,2,3].forEach(function(value, index) {
            abc += value;
            def.push(index);
        });
        [ abc, def ];
    `, "6,0,1,2")
}

func TestArray_indexing(t *testing.T) {
	Terst(t)

	test := runTest()

	test(`
        var abc = new Array(0, 1);
        var def = abc.length;
        abc[4294967296] = 10; // 2^32 => 0
        abc[4294967297] = 11; // 2^32+1 => 1
        [ def, abc.length, abc[0], abc[1], abc[4294967296] ];
    `, "2,2,0,1,10")

	test(`
        abc = new Array(0, 1);
        def = abc.length;
        abc[4294967295] = 10;
        var ghi = abc.length;
        abc[4294967299] = 12;
        var jkl = abc.length;
        abc[4294967294] = 11;
        [ def, ghi, jkl, abc.length, abc[4294967295], abc[4294967299] ];
    `, "2,2,2,4294967295,10,12")
}

func TestArray_map(t *testing.T) {
	Terst(t)

	test := runTest()
	test(`raise: [].map("abc")`, "TypeError")
	test(`[].map(function() { return 1 }).length`, "0")
	test(`[1,2,3].map(function(value) { return value * value })`, "1,4,9")
	test(`[1,2,3].map(function(value) { return 1 })`, "1,1,1")
}

func TestArray_filter(t *testing.T) {
	Terst(t)

	test := runTest()
	test(`raise: [].filter("abc")`, "TypeError")
	test(`[].filter(function() { return 1 }).length`, "0")
	test(`[1,2,3].filter(function() { return false }).length`, "0")
	test(`[1,2,3].filter(function() { return true })`, "1,2,3")
}

func TestArray_reduce(t *testing.T) {
	Terst(t)

	test := runTest()
	test(`raise: [].reduce("abc")`, "TypeError")
	test(`raise: [].reduce(function() {})`, "TypeError")
	test(`[].reduce(function() {}, 0)`, "0")
	test(`['a','b','c'].reduce(function(result, value) { return result+', '+value })`, "a, b, c")
	test(`[1,2,3].reduce(function(result, value) { return result + value }, 4)`, "10")
	test(`[1,2,3].reduce(function(result, value) { return result + value })`, "6")
}

func TestArray_reduceRight(t *testing.T) {
	Terst(t)

	test := runTest()
	test(`raise: [].reduceRight("abc")`, "TypeError")
	test(`raise: [].reduceRight(function() {})`, "TypeError")
	test(`[].reduceRight(function() {}, 0)`, "0")
	test(`['a','b','c'].reduceRight(function(result, value) { return result+', '+value })`, "c, b, a")
	test(`[1,2,3].reduceRight(function(result, value) { return result + value }, 4)`, "10")
	test(`[1,2,3].reduceRight(function(result, value) { return result + value })`, "6")
}

func TestArray_defineOwnProperty(t *testing.T) {
	Terst(t)

	test := runTest()
	test(`
        var abc = [];
        Object.defineProperty(abc, "length", {
            writable: false
        });
        abc.length;
    `, "0")

	test(`raise:
        var abc = [];
        var exception;
        Object.defineProperty(abc, "length", {
            writable: false
        });
        Object.defineProperty(abc, "length", {
            writable: true
        });
    `, "TypeError")
}

func TestArray_new(t *testing.T) {
	Terst(t)

	test := runTest()
	test(`
        var abc = new Array(null);
        var def = new Array(undefined);
        [ abc.length, abc[0] === null, def.length, def[0] === undefined ]
    `, "1,true,1,true")

	test(`
        var abc = new Array(new Number(0));
        var def = new Array(new Number(4294967295));
        [ abc.length, typeof abc[0], abc[0] == 0, def.length, typeof def[0], def[0] == 4294967295 ]
    `, "1,object,true,1,object,true")
}