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quickjs/tests/test_builtin.js  view on Meta::CPAN

    a[1] = 10;
    a[4] = 3;
    assert(a.length, 5);

    a = [1,2];
    a.length = 5;
    a[4] = 1;
    a.length = 4;
    assert(a[4] !== 1, true, "array5");

    a = [1,2];
    a.push(3,4);
    assert(a.join(), "1,2,3,4", "join");

    a = [1,2,3,4,5];
    Object.defineProperty(a, "3", { configurable: false });
    err = false;
    try {
        a.length = 2;
    } catch(e) {
        err = true;
    }
    assert(err && a.toString() === "1,2,3,4");
}

function test_string()
{
    var a;
    a = String("abc");
    assert(a.length, 3, "string");
    assert(a[1], "b", "string");
    assert(a.charCodeAt(1), 0x62, "string");
    assert(String.fromCharCode(65), "A", "string");
    assert(String.fromCharCode.apply(null, [65, 66, 67]), "ABC", "string");
    assert(a.charAt(1), "b");
    assert(a.charAt(-1), "");
    assert(a.charAt(3), "");
    
    a = "abcd";
    assert(a.substring(1, 3), "bc", "substring");
    a = String.fromCharCode(0x20ac);
    assert(a.charCodeAt(0), 0x20ac, "unicode");
    assert(a, "€", "unicode");
    assert(a, "\u20ac", "unicode");
    assert(a, "\u{20ac}", "unicode");
    assert("a", "\x61", "unicode");
        
    a = "\u{10ffff}";
    assert(a.length, 2, "unicode");
    assert(a, "\u{dbff}\u{dfff}", "unicode");
    assert(a.codePointAt(0), 0x10ffff);
    assert(String.fromCodePoint(0x10ffff), a);

    assert("a".concat("b", "c"), "abc");

    assert("abcabc".indexOf("cab"), 2);
    assert("abcabc".indexOf("cab2"), -1);
    assert("abc".indexOf("c"), 2);

    assert("aaa".indexOf("a"), 0);
    assert("aaa".indexOf("a", NaN), 0);
    assert("aaa".indexOf("a", -Infinity), 0);
    assert("aaa".indexOf("a", -1), 0);
    assert("aaa".indexOf("a", -0), 0);
    assert("aaa".indexOf("a", 0), 0);
    assert("aaa".indexOf("a", 1), 1);
    assert("aaa".indexOf("a", 2), 2);
    assert("aaa".indexOf("a", 3), -1);
    assert("aaa".indexOf("a", 4), -1);
    assert("aaa".indexOf("a", Infinity), -1);

    assert("aaa".indexOf(""), 0);
    assert("aaa".indexOf("", NaN), 0);
    assert("aaa".indexOf("", -Infinity), 0);
    assert("aaa".indexOf("", -1), 0);
    assert("aaa".indexOf("", -0), 0);
    assert("aaa".indexOf("", 0), 0);
    assert("aaa".indexOf("", 1), 1);
    assert("aaa".indexOf("", 2), 2);
    assert("aaa".indexOf("", 3), 3);
    assert("aaa".indexOf("", 4), 3);
    assert("aaa".indexOf("", Infinity), 3);

    assert("aaa".lastIndexOf("a"), 2);
    assert("aaa".lastIndexOf("a", NaN), 2);
    assert("aaa".lastIndexOf("a", -Infinity), 0);
    assert("aaa".lastIndexOf("a", -1), 0);
    assert("aaa".lastIndexOf("a", -0), 0);
    assert("aaa".lastIndexOf("a", 0), 0);
    assert("aaa".lastIndexOf("a", 1), 1);
    assert("aaa".lastIndexOf("a", 2), 2);
    assert("aaa".lastIndexOf("a", 3), 2);
    assert("aaa".lastIndexOf("a", 4), 2);
    assert("aaa".lastIndexOf("a", Infinity), 2);

    assert("aaa".lastIndexOf(""), 3);
    assert("aaa".lastIndexOf("", NaN), 3);
    assert("aaa".lastIndexOf("", -Infinity), 0);
    assert("aaa".lastIndexOf("", -1), 0);
    assert("aaa".lastIndexOf("", -0), 0);
    assert("aaa".lastIndexOf("", 0), 0);
    assert("aaa".lastIndexOf("", 1), 1);
    assert("aaa".lastIndexOf("", 2), 2);
    assert("aaa".lastIndexOf("", 3), 3);
    assert("aaa".lastIndexOf("", 4), 3);
    assert("aaa".lastIndexOf("", Infinity), 3);

    assert("a,b,c".split(","), ["a","b","c"]);
    assert(",b,c".split(","), ["","b","c"]);
    assert("a,b,".split(","), ["a","b",""]);

    assert("aaaa".split(), [ "aaaa" ]);
    assert("aaaa".split(undefined, 0), [ ]);
    assert("aaaa".split(""), [ "a", "a", "a", "a" ]);
    assert("aaaa".split("", 0), [ ]);
    assert("aaaa".split("", 1), [ "a" ]);
    assert("aaaa".split("", 2), [ "a", "a" ]);
    assert("aaaa".split("a"), [ "", "", "", "", "" ]);
    assert("aaaa".split("a", 2), [ "", "" ]);
    assert("aaaa".split("aa"), [ "", "", "" ]);
    assert("aaaa".split("aa", 0), [ ]);
    assert("aaaa".split("aa", 1), [ "" ]);
    assert("aaaa".split("aa", 2), [ "", "" ]);
    assert("aaaa".split("aaa"), [ "", "a" ]);
    assert("aaaa".split("aaaa"), [ "", "" ]);
    assert("aaaa".split("aaaaa"), [ "aaaa" ]);
    assert("aaaa".split("aaaaa", 0), [  ]);
    assert("aaaa".split("aaaaa", 1), [ "aaaa" ]);

    assert(eval('"\0"'), "\0");

    assert("abc".padStart(Infinity, ""), "abc");
}

function test_math()
{
    var a;
    a = 1.4;
    assert(Math.floor(a), 1);
    assert(Math.ceil(a), 2);
    assert(Math.imul(0x12345678, 123), -1088058456);
    assert(Math.fround(0.1), 0.10000000149011612);
    assert(Math.hypot() == 0);
    assert(Math.hypot(-2) == 2);
    assert(Math.hypot(3, 4) == 5);
    assert(Math.abs(Math.hypot(3, 4, 5) - 7.0710678118654755) <= 1e-15);
}

function test_number()
{
    assert(parseInt("123"), 123);
    assert(parseInt("  123r"), 123);
    assert(parseInt("0x123"), 0x123);
    assert(parseInt("0o123"), 0);
    assert(+"  123   ", 123);
    assert(+"0b111", 7);
    assert(+"0o123", 83);
    assert(parseFloat("0x1234"), 0);
    assert(parseFloat("Infinity"), Infinity);
    assert(parseFloat("-Infinity"), -Infinity);
    assert(parseFloat("123.2"), 123.2);
    assert(parseFloat("123.2e3"), 123200);
    assert(Number.isNaN(Number("+")));
    assert(Number.isNaN(Number("-")));
    assert(Number.isNaN(Number("\x00a")));

    assert((25).toExponential(0), "3e+1");
    assert((-25).toExponential(0), "-3e+1");
    assert((2.5).toPrecision(1), "3");
    assert((-2.5).toPrecision(1), "-3");
    assert((1.125).toFixed(2), "1.13");
    assert((-1.125).toFixed(2), "-1.13");
}

function test_eval2()
{
    var g_call_count = 0;
    /* force non strict mode for f1 and f2 */
    var f1 = new Function("eval", "eval(1, 2)");
    var f2 = new Function("eval", "eval(...[1, 2])");
    function g(a, b) {
        assert(a, 1);
        assert(b, 2);
        g_call_count++;
    }
    f1(g);
    f2(g);
    assert(g_call_count, 2);
}

function test_eval()
{
    function f(b) {
        var x = 1;
        return eval(b);
    }
    var r, a;

    r = eval("1+1;");
    assert(r, 2, "eval");

    r = eval("var my_var=2; my_var;");
    assert(r, 2, "eval");
    assert(typeof my_var, "undefined");

    assert(eval("if (1) 2; else 3;"), 2);
    assert(eval("if (0) 2; else 3;"), 3);

    assert(f.call(1, "this"), 1);
    
    a = 2;
    assert(eval("a"), 2);

    eval("a = 3");
    assert(a, 3);

    assert(f("arguments.length", 1), 2);
    assert(f("arguments[1]", 1), 1);

    a = 4;
    assert(f("a"), 4);
    f("a=3");
    assert(a, 3);

    test_eval2();