Improve tests

- split test_bigfloat.js from test_bignum.js
- make test_date() compatible with node
- document Date constructor string argument format:
  should add test cases for invalid strings
- test_argument_scope(): only test this syntax error in strict mode:
  `var f = function(a = eval("var arguments")) {};`

Makefile

@@ -441,6 +441,7 @@ test: qjs
 	./qjs tests/test_language.js
 	./qjs tests/test_builtin.js
 	./qjs tests/test_loop.js
+	./qjs tests/test_bignum.js
 	./qjs tests/test_std.js
 	./qjs tests/test_worker.js
 ifdef CONFIG_SHARED_LIBS
@@ -453,7 +454,7 @@ endif
 endif
 ifdef CONFIG_BIGNUM
 	./qjs --bignum tests/test_op_overloading.js
-	./qjs --bignum tests/test_bignum.js
+	./qjs --bignum tests/test_bigfloat.js
 	./qjs --qjscalc tests/test_qjscalc.js
 endif
 ifdef CONFIG_M32
@@ -461,11 +462,12 @@ ifdef CONFIG_M32
 	./qjs32 tests/test_language.js
 	./qjs32 tests/test_builtin.js
 	./qjs32 tests/test_loop.js
+	./qjs32 tests/test_bignum.js
 	./qjs32 tests/test_std.js
 	./qjs32 tests/test_worker.js
 ifdef CONFIG_BIGNUM
 	./qjs32 --bignum tests/test_op_overloading.js
-	./qjs32 --bignum tests/test_bignum.js
+	./qjs32 --bignum tests/test_bigfloat.js
 	./qjs32 --qjscalc tests/test_qjscalc.js
 endif
 endif

tests/test_bigfloat.js

@@ -0,0 +1,279 @@
+"use strict";
+
+function assert(actual, expected, message) {
+    if (arguments.length == 1)
+        expected = true;
+
+    if (actual === expected)
+        return;
+
+    if (actual !== null && expected !== null
+    &&  typeof actual == 'object' && typeof expected == 'object'
+    &&  actual.toString() === expected.toString())
+        return;
+
+    throw Error("assertion failed: got |" + actual + "|" +
+                ", expected |" + expected + "|" +
+                (message ? " (" + message + ")" : ""));
+}
+
+function assertThrows(err, func)
+{
+    var ex;
+    ex = false;
+    try {
+        func();
+    } catch(e) {
+        ex = true;
+        assert(e instanceof err);
+    }
+    assert(ex, true, "exception expected");
+}
+
+// load more elaborate version of assert if available
+try { __loadScript("test_assert.js"); } catch(e) {}
+
+/*----------------*/
+
+/* a must be < b */
+function test_less(a, b)
+{
+    assert(a < b);
+    assert(!(b < a));
+    assert(a <= b);
+    assert(!(b <= a));
+    assert(b > a);
+    assert(!(a > b));
+    assert(b >= a);
+    assert(!(a >= b));
+    assert(a != b);
+    assert(!(a == b));
+}
+
+/* a must be numerically equal to b */
+function test_eq(a, b)
+{
+    assert(a == b);
+    assert(b == a);
+    assert(!(a != b));
+    assert(!(b != a));
+    assert(a <= b);
+    assert(b <= a);
+    assert(!(a < b));
+    assert(a >= b);
+    assert(b >= a);
+    assert(!(a > b));
+}
+
+function test_divrem(div1, a, b, q)
+{
+    var div, divrem, t;
+    div = BigInt[div1];
+    divrem = BigInt[div1 + "rem"];
+    assert(div(a, b) == q);
+    t = divrem(a, b);
+    assert(t[0] == q);
+    assert(a == b * q + t[1]);
+}
+
+function test_idiv1(div, a, b, r)
+{
+    test_divrem(div, a, b, r[0]);
+    test_divrem(div, -a, b, r[1]);
+    test_divrem(div, a, -b, r[2]);
+    test_divrem(div, -a, -b, r[3]);
+}
+
+/* QuickJS BigInt extensions */
+function test_bigint_ext()
+{
+    var r;
+    assert(BigInt.floorLog2(0n) === -1n);
+    assert(BigInt.floorLog2(7n) === 2n);
+
+    assert(BigInt.sqrt(0xffffffc000000000000000n) === 17592185913343n);
+    r = BigInt.sqrtrem(0xffffffc000000000000000n);
+    assert(r[0] === 17592185913343n);
+    assert(r[1] === 35167191957503n);
+
+    test_idiv1("tdiv", 3n, 2n, [1n, -1n, -1n, 1n]);
+    test_idiv1("fdiv", 3n, 2n, [1n, -2n, -2n, 1n]);
+    test_idiv1("cdiv", 3n, 2n, [2n, -1n, -1n, 2n]);
+    test_idiv1("ediv", 3n, 2n, [1n, -2n, -1n, 2n]);
+}
+
+function test_bigfloat()
+{
+    var e, a, b, sqrt2;
+
+    assert(typeof 1n === "bigint");
+    assert(typeof 1l === "bigfloat");
+    assert(1 == 1.0l);
+    assert(1 !== 1.0l);
+
+    test_less(2l, 3l);
+    test_eq(3l, 3l);
+
+    test_less(2, 3l);
+    test_eq(3, 3l);
+
+    test_less(2.1, 3l);
+    test_eq(Math.sqrt(9), 3l);
+
+    test_less(2n, 3l);
+    test_eq(3n, 3l);
+
+    e = new BigFloatEnv(128);
+    assert(e.prec == 128);
+    a = BigFloat.sqrt(2l, e);
+    assert(a === BigFloat.parseFloat("0x1.6a09e667f3bcc908b2fb1366ea957d3e", 0, e));
+    assert(e.inexact === true);
+    assert(BigFloat.fpRound(a) == 0x1.6a09e667f3bcc908b2fb1366ea95l);
+
+    b = BigFloatEnv.setPrec(BigFloat.sqrt.bind(null, 2), 128);
+    assert(a === b);
+
+    assert(BigFloat.isNaN(BigFloat(NaN)));
+    assert(BigFloat.isFinite(1l));
+    assert(!BigFloat.isFinite(1l/0l));
+
+    assert(BigFloat.abs(-3l) === 3l);
+    assert(BigFloat.sign(-3l) === -1l);
+
+    assert(BigFloat.exp(0.2l) === 1.2214027581601698339210719946396742l);
+    assert(BigFloat.log(3l) === 1.0986122886681096913952452369225256l);
+    assert(BigFloat.pow(2.1l, 1.6l) === 3.277561666451861947162828744873745l);
+
+    assert(BigFloat.sin(-1l) === -0.841470984807896506652502321630299l);
+    assert(BigFloat.cos(1l) === 0.5403023058681397174009366074429766l);
+    assert(BigFloat.tan(0.1l) === 0.10033467208545054505808004578111154l);
+
+    assert(BigFloat.asin(0.3l) === 0.30469265401539750797200296122752915l);
+    assert(BigFloat.acos(0.4l) === 1.1592794807274085998465837940224159l);
+    assert(BigFloat.atan(0.7l) === 0.610725964389208616543758876490236l);
+    assert(BigFloat.atan2(7.1l, -5.1l) === 2.1937053809751415549388104628759813l);
+
+    assert(BigFloat.floor(2.5l) === 2l);
+    assert(BigFloat.ceil(2.5l) === 3l);
+    assert(BigFloat.trunc(-2.5l) === -2l);
+    assert(BigFloat.round(2.5l) === 3l);
+
+    assert(BigFloat.fmod(3l,2l) === 1l);
+    assert(BigFloat.remainder(3l,2l) === -1l);
+
+    /* string conversion */
+    assert((1234.125l).toString(), "1234.125");
+    assert((1234.125l).toFixed(2), "1234.13");
+    assert((1234.125l).toFixed(2, "down"), "1234.12");
+    assert((1234.125l).toExponential(), "1.234125e+3");
+    assert((1234.125l).toExponential(5), "1.23413e+3");
+    assert((1234.125l).toExponential(5, BigFloatEnv.RNDZ), "1.23412e+3");
+    assert((1234.125l).toPrecision(6), "1234.13");
+    assert((1234.125l).toPrecision(6, BigFloatEnv.RNDZ), "1234.12");
+
+    /* string conversion with binary base */
+    assert((0x123.438l).toString(16), "123.438");
+    assert((0x323.438l).toString(16), "323.438");
+    assert((0x723.438l).toString(16), "723.438");
+    assert((0xf23.438l).toString(16), "f23.438");
+    assert((0x123.438l).toFixed(2, BigFloatEnv.RNDNA, 16), "123.44");
+    assert((0x323.438l).toFixed(2, BigFloatEnv.RNDNA, 16), "323.44");
+    assert((0x723.438l).toFixed(2, BigFloatEnv.RNDNA, 16), "723.44");
+    assert((0xf23.438l).toFixed(2, BigFloatEnv.RNDNA, 16), "f23.44");
+    assert((0x0.0000438l).toFixed(6, BigFloatEnv.RNDNA, 16), "0.000044");
+    assert((0x1230000000l).toFixed(1, BigFloatEnv.RNDNA, 16), "1230000000.0");
+    assert((0x123.438l).toPrecision(5, BigFloatEnv.RNDNA, 16), "123.44");
+    assert((0x123.438l).toPrecision(5, BigFloatEnv.RNDZ, 16), "123.43");
+    assert((0x323.438l).toPrecision(5, BigFloatEnv.RNDNA, 16), "323.44");
+    assert((0x723.438l).toPrecision(5, BigFloatEnv.RNDNA, 16), "723.44");
+    assert((-0xf23.438l).toPrecision(5, BigFloatEnv.RNDD, 16), "-f23.44");
+    assert((0x123.438l).toExponential(4, BigFloatEnv.RNDNA, 16), "1.2344p+8");
+}
+
+function test_bigdecimal()
+{
+    assert(1m === 1m);
+    assert(1m !== 2m);
+    test_less(1m, 2m);
+    test_eq(2m, 2m);
+
+    test_less(1, 2m);
+    test_eq(2, 2m);
+
+    test_less(1.1, 2m);
+    test_eq(Math.sqrt(4), 2m);
+
+    test_less(2n, 3m);
+    test_eq(3n, 3m);
+
+    assert(BigDecimal("1234.1") === 1234.1m);
+    assert(BigDecimal("    1234.1") === 1234.1m);
+    assert(BigDecimal("    1234.1  ") === 1234.1m);
+
+    assert(BigDecimal(0.1) === 0.1m);
+    assert(BigDecimal(123) === 123m);
+    assert(BigDecimal(true) === 1m);
+
+    assert(123m + 1m === 124m);
+    assert(123m - 1m === 122m);
+
+    assert(3.2m * 3m === 9.6m);
+    assert(10m / 2m === 5m);
+    assertThrows(RangeError, () => { 10m / 3m } );
+
+    assert(10m % 3m === 1m);
+    assert(-10m % 3m === -1m);
+
+    assert(1234.5m ** 3m === 1881365963.625m);
+    assertThrows(RangeError, () => { 2m ** 3.1m } );
+    assertThrows(RangeError, () => { 2m ** -3m } );
+
+    assert(BigDecimal.sqrt(2m,
+                       { roundingMode: "half-even",
+                         maximumSignificantDigits: 4 }) === 1.414m);
+    assert(BigDecimal.sqrt(101m,
+                       { roundingMode: "half-even",
+                         maximumFractionDigits: 3 }) === 10.050m);
+    assert(BigDecimal.sqrt(0.002m,
+                       { roundingMode: "half-even",
+                         maximumFractionDigits: 3 }) === 0.045m);
+
+    assert(BigDecimal.round(3.14159m,
+                       { roundingMode: "half-even",
+                         maximumFractionDigits: 3 }) === 3.142m);
+
+    assert(BigDecimal.add(3.14159m, 0.31212m,
+                          { roundingMode: "half-even",
+                            maximumFractionDigits: 2 }) === 3.45m);
+    assert(BigDecimal.sub(3.14159m, 0.31212m,
+                          { roundingMode: "down",
+                            maximumFractionDigits: 2 }) === 2.82m);
+    assert(BigDecimal.mul(3.14159m, 0.31212m,
+                          { roundingMode: "half-even",
+                            maximumFractionDigits: 3 }) === 0.981m);
+    assert(BigDecimal.mod(3.14159m, 0.31211m,
+                          { roundingMode: "half-even",
+                            maximumFractionDigits: 4 }) === 0.0205m);
+    assert(BigDecimal.div(20m, 3m,
+                       { roundingMode: "half-even",
+                         maximumSignificantDigits: 3 }) === 6.67m);
+    assert(BigDecimal.div(20m, 3m,
+                       { roundingMode: "half-even",
+                         maximumFractionDigits: 50 }) ===
+           6.66666666666666666666666666666666666666666666666667m);
+
+    /* string conversion */
+    assert((1234.125m).toString(), "1234.125");
+    assert((1234.125m).toFixed(2), "1234.13");
+    assert((1234.125m).toFixed(2, "down"), "1234.12");
+    assert((1234.125m).toExponential(), "1.234125e+3");
+    assert((1234.125m).toExponential(5), "1.23413e+3");
+    assert((1234.125m).toExponential(5, "down"), "1.23412e+3");
+    assert((1234.125m).toPrecision(6), "1234.13");
+    assert((1234.125m).toPrecision(6, "down"), "1234.12");
+    assert((-1234.125m).toPrecision(6, "floor"), "-1234.13");
+}
+
+test_bigint_ext();
+test_bigfloat();
+test_bigdecimal();

tests/test_bignum.js

@@ -110,217 +110,5 @@ function test_bigint2()
     assertThrows(SyntaxError, () => { BigInt("  123  r") } );
 }
 
-function test_divrem(div1, a, b, q)
-{
-    var div, divrem, t;
-    div = BigInt[div1];
-    divrem = BigInt[div1 + "rem"];
-    assert(div(a, b) == q);
-    t = divrem(a, b);
-    assert(t[0] == q);
-    assert(a == b * q + t[1]);
-}
-
-function test_idiv1(div, a, b, r)
-{
-    test_divrem(div, a, b, r[0]);
-    test_divrem(div, -a, b, r[1]);
-    test_divrem(div, a, -b, r[2]);
-    test_divrem(div, -a, -b, r[3]);
-}
-
-/* QuickJS BigInt extensions */
-function test_bigint_ext()
-{
-    var r;
-    assert(BigInt.floorLog2(0n) === -1n);
-    assert(BigInt.floorLog2(7n) === 2n);
-
-    assert(BigInt.sqrt(0xffffffc000000000000000n) === 17592185913343n);
-    r = BigInt.sqrtrem(0xffffffc000000000000000n);
-    assert(r[0] === 17592185913343n);
-    assert(r[1] === 35167191957503n);
-
-    test_idiv1("tdiv", 3n, 2n, [1n, -1n, -1n, 1n]);
-    test_idiv1("fdiv", 3n, 2n, [1n, -2n, -2n, 1n]);
-    test_idiv1("cdiv", 3n, 2n, [2n, -1n, -1n, 2n]);
-    test_idiv1("ediv", 3n, 2n, [1n, -2n, -1n, 2n]);
-}
-
-function test_bigfloat()
-{
-    var e, a, b, sqrt2;
-
-    assert(typeof 1n === "bigint");
-    assert(typeof 1l === "bigfloat");
-    assert(1 == 1.0l);
-    assert(1 !== 1.0l);
-
-    test_less(2l, 3l);
-    test_eq(3l, 3l);
-
-    test_less(2, 3l);
-    test_eq(3, 3l);
-
-    test_less(2.1, 3l);
-    test_eq(Math.sqrt(9), 3l);
-
-    test_less(2n, 3l);
-    test_eq(3n, 3l);
-
-    e = new BigFloatEnv(128);
-    assert(e.prec == 128);
-    a = BigFloat.sqrt(2l, e);
-    assert(a === BigFloat.parseFloat("0x1.6a09e667f3bcc908b2fb1366ea957d3e", 0, e));
-    assert(e.inexact === true);
-    assert(BigFloat.fpRound(a) == 0x1.6a09e667f3bcc908b2fb1366ea95l);
-
-    b = BigFloatEnv.setPrec(BigFloat.sqrt.bind(null, 2), 128);
-    assert(a === b);
-
-    assert(BigFloat.isNaN(BigFloat(NaN)));
-    assert(BigFloat.isFinite(1l));
-    assert(!BigFloat.isFinite(1l/0l));
-
-    assert(BigFloat.abs(-3l) === 3l);
-    assert(BigFloat.sign(-3l) === -1l);
-
-    assert(BigFloat.exp(0.2l) === 1.2214027581601698339210719946396742l);
-    assert(BigFloat.log(3l) === 1.0986122886681096913952452369225256l);
-    assert(BigFloat.pow(2.1l, 1.6l) === 3.277561666451861947162828744873745l);
-
-    assert(BigFloat.sin(-1l) === -0.841470984807896506652502321630299l);
-    assert(BigFloat.cos(1l) === 0.5403023058681397174009366074429766l);
-    assert(BigFloat.tan(0.1l) === 0.10033467208545054505808004578111154l);
-
-    assert(BigFloat.asin(0.3l) === 0.30469265401539750797200296122752915l);
-    assert(BigFloat.acos(0.4l) === 1.1592794807274085998465837940224159l);
-    assert(BigFloat.atan(0.7l) === 0.610725964389208616543758876490236l);
-    assert(BigFloat.atan2(7.1l, -5.1l) === 2.1937053809751415549388104628759813l);
-
-    assert(BigFloat.floor(2.5l) === 2l);
-    assert(BigFloat.ceil(2.5l) === 3l);
-    assert(BigFloat.trunc(-2.5l) === -2l);
-    assert(BigFloat.round(2.5l) === 3l);
-
-    assert(BigFloat.fmod(3l,2l) === 1l);
-    assert(BigFloat.remainder(3l,2l) === -1l);
-
-    /* string conversion */
-    assert((1234.125l).toString(), "1234.125");
-    assert((1234.125l).toFixed(2), "1234.13");
-    assert((1234.125l).toFixed(2, "down"), "1234.12");
-    assert((1234.125l).toExponential(), "1.234125e+3");
-    assert((1234.125l).toExponential(5), "1.23413e+3");
-    assert((1234.125l).toExponential(5, BigFloatEnv.RNDZ), "1.23412e+3");
-    assert((1234.125l).toPrecision(6), "1234.13");
-    assert((1234.125l).toPrecision(6, BigFloatEnv.RNDZ), "1234.12");
-
-    /* string conversion with binary base */
-    assert((0x123.438l).toString(16), "123.438");
-    assert((0x323.438l).toString(16), "323.438");
-    assert((0x723.438l).toString(16), "723.438");
-    assert((0xf23.438l).toString(16), "f23.438");
-    assert((0x123.438l).toFixed(2, BigFloatEnv.RNDNA, 16), "123.44");
-    assert((0x323.438l).toFixed(2, BigFloatEnv.RNDNA, 16), "323.44");
-    assert((0x723.438l).toFixed(2, BigFloatEnv.RNDNA, 16), "723.44");
-    assert((0xf23.438l).toFixed(2, BigFloatEnv.RNDNA, 16), "f23.44");
-    assert((0x0.0000438l).toFixed(6, BigFloatEnv.RNDNA, 16), "0.000044");
-    assert((0x1230000000l).toFixed(1, BigFloatEnv.RNDNA, 16), "1230000000.0");
-    assert((0x123.438l).toPrecision(5, BigFloatEnv.RNDNA, 16), "123.44");
-    assert((0x123.438l).toPrecision(5, BigFloatEnv.RNDZ, 16), "123.43");
-    assert((0x323.438l).toPrecision(5, BigFloatEnv.RNDNA, 16), "323.44");
-    assert((0x723.438l).toPrecision(5, BigFloatEnv.RNDNA, 16), "723.44");
-    assert((-0xf23.438l).toPrecision(5, BigFloatEnv.RNDD, 16), "-f23.44");
-    assert((0x123.438l).toExponential(4, BigFloatEnv.RNDNA, 16), "1.2344p+8");
-}
-
-function test_bigdecimal()
-{
-    assert(1m === 1m);
-    assert(1m !== 2m);
-    test_less(1m, 2m);
-    test_eq(2m, 2m);
-
-    test_less(1, 2m);
-    test_eq(2, 2m);
-
-    test_less(1.1, 2m);
-    test_eq(Math.sqrt(4), 2m);
-
-    test_less(2n, 3m);
-    test_eq(3n, 3m);
-
-    assert(BigDecimal("1234.1") === 1234.1m);
-    assert(BigDecimal("    1234.1") === 1234.1m);
-    assert(BigDecimal("    1234.1  ") === 1234.1m);
-
-    assert(BigDecimal(0.1) === 0.1m);
-    assert(BigDecimal(123) === 123m);
-    assert(BigDecimal(true) === 1m);
-
-    assert(123m + 1m === 124m);
-    assert(123m - 1m === 122m);
-
-    assert(3.2m * 3m === 9.6m);
-    assert(10m / 2m === 5m);
-    assertThrows(RangeError, () => { 10m / 3m } );
-
-    assert(10m % 3m === 1m);
-    assert(-10m % 3m === -1m);
-
-    assert(1234.5m ** 3m === 1881365963.625m);
-    assertThrows(RangeError, () => { 2m ** 3.1m } );
-    assertThrows(RangeError, () => { 2m ** -3m } );
-
-    assert(BigDecimal.sqrt(2m,
-                       { roundingMode: "half-even",
-                         maximumSignificantDigits: 4 }) === 1.414m);
-    assert(BigDecimal.sqrt(101m,
-                       { roundingMode: "half-even",
-                         maximumFractionDigits: 3 }) === 10.050m);
-    assert(BigDecimal.sqrt(0.002m,
-                       { roundingMode: "half-even",
-                         maximumFractionDigits: 3 }) === 0.045m);
-
-    assert(BigDecimal.round(3.14159m,
-                       { roundingMode: "half-even",
-                         maximumFractionDigits: 3 }) === 3.142m);
-
-    assert(BigDecimal.add(3.14159m, 0.31212m,
-                          { roundingMode: "half-even",
-                            maximumFractionDigits: 2 }) === 3.45m);
-    assert(BigDecimal.sub(3.14159m, 0.31212m,
-                          { roundingMode: "down",
-                            maximumFractionDigits: 2 }) === 2.82m);
-    assert(BigDecimal.mul(3.14159m, 0.31212m,
-                          { roundingMode: "half-even",
-                            maximumFractionDigits: 3 }) === 0.981m);
-    assert(BigDecimal.mod(3.14159m, 0.31211m,
-                          { roundingMode: "half-even",
-                            maximumFractionDigits: 4 }) === 0.0205m);
-    assert(BigDecimal.div(20m, 3m,
-                       { roundingMode: "half-even",
-                         maximumSignificantDigits: 3 }) === 6.67m);
-    assert(BigDecimal.div(20m, 3m,
-                       { roundingMode: "half-even",
-                         maximumFractionDigits: 50 }) ===
-           6.66666666666666666666666666666666666666666666666667m);
-
-    /* string conversion */
-    assert((1234.125m).toString(), "1234.125");
-    assert((1234.125m).toFixed(2), "1234.13");
-    assert((1234.125m).toFixed(2, "down"), "1234.12");
-    assert((1234.125m).toExponential(), "1.234125e+3");
-    assert((1234.125m).toExponential(5), "1.23413e+3");
-    assert((1234.125m).toExponential(5, "down"), "1.23412e+3");
-    assert((1234.125m).toPrecision(6), "1234.13");
-    assert((1234.125m).toPrecision(6, "down"), "1234.12");
-    assert((-1234.125m).toPrecision(6, "floor"), "-1234.13");
-}
-
 test_bigint1();
 test_bigint2();
-test_bigint_ext();
-test_bigfloat();
-test_bigdecimal();

tests/test_builtin.js

@@ -316,9 +316,9 @@ function test_math()
     assert(Math.imul((-2)**31, (-2)**31), 0);
     assert(Math.imul(2**31-1, 2**31-1), 1);
     assert(Math.fround(0.1), 0.10000000149011612);
-    assert(Math.hypot() == 0);
-    assert(Math.hypot(-2) == 2);
-    assert(Math.hypot(3, 4) == 5);
+    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);
 }
 
@@ -491,20 +491,31 @@ function test_date()
     assert(d.toISOString(), "2017-09-22T18:10:11.091Z");
     a = Date.parse(d.toISOString());
     assert((new Date(a)).toISOString(), d.toISOString());
+    // Date Time String format is YYYY-MM-DDTHH:mm:ss.sssZ
+    // accepted date formats are: YYYY, YYYY-MM and YYYY-MM-DD
+    // accepted time formats are: THH:mm, THH:mm:ss, THH:mm:ss.sss
+    // A string containing out-of-bounds or nonconforming elements
+    //   is not a valid instance of this format.
+    // expanded years are represented with 6 digits prefixed by + or -
+    // -000000 is invalid.
+    // Hence the fractional part after . should have 3 digits and how
+    // a different number of digits is handled is implementation defined.
     s = new Date("2020-01-01T01:01:01.1Z").toISOString();
-    assert(s ==  "2020-01-01T01:01:01.100Z");
+    assert(s,    "2020-01-01T01:01:01.100Z");
     s = new Date("2020-01-01T01:01:01.12Z").toISOString();
-    assert(s ==  "2020-01-01T01:01:01.120Z");
+    assert(s,    "2020-01-01T01:01:01.120Z");
     s = new Date("2020-01-01T01:01:01.123Z").toISOString();
-    assert(s ==  "2020-01-01T01:01:01.123Z");
+    assert(s,    "2020-01-01T01:01:01.123Z");
     s = new Date("2020-01-01T01:01:01.1234Z").toISOString();
-    assert(s ==  "2020-01-01T01:01:01.123Z");
+    assert(s,    "2020-01-01T01:01:01.123Z");
     s = new Date("2020-01-01T01:01:01.12345Z").toISOString();
-    assert(s ==  "2020-01-01T01:01:01.123Z");
+    assert(s,    "2020-01-01T01:01:01.123Z");
     s = new Date("2020-01-01T01:01:01.1235Z").toISOString();
-    assert(s ==  "2020-01-01T01:01:01.124Z");
+    assert(s ==  "2020-01-01T01:01:01.124Z" ||      // QuickJS
+           s ==  "2020-01-01T01:01:01.123Z");       // nodeJS
     s = new Date("2020-01-01T01:01:01.9999Z").toISOString();
-    assert(s ==  "2020-01-01T01:01:02.000Z");
+    assert(s ==  "2020-01-01T01:01:02.000Z" ||      // QuickJS
+           s ==  "2020-01-01T01:01:01.999Z");       // nodeJS
 }
 
 function test_regexp()

tests/test_language.js

@@ -420,8 +420,12 @@ function test_argument_scope()
     var f;
     var c = "global";
 
-    f = function(a = eval("var arguments")) {};
-    assert_throws(SyntaxError, f);
+    (function() {
+        "use strict";
+        // XXX: node only throws in strict mode
+        f = function(a = eval("var arguments")) {};
+        assert_throws(SyntaxError, f);
+    })();
 
     f = function(a = eval("1"), b = arguments[0]) { return b; };
     assert(f(12), 12);