diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/Number/prototype/toExponential')
17 files changed, 526 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Number/prototype/toExponential/browser.js b/js/src/tests/test262/built-ins/Number/prototype/toExponential/browser.js new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/js/src/tests/test262/built-ins/Number/prototype/toExponential/browser.js diff --git a/js/src/tests/test262/built-ins/Number/prototype/toExponential/infinity.js b/js/src/tests/test262/built-ins/Number/prototype/toExponential/infinity.js new file mode 100644 index 0000000000..b9870e5902 --- /dev/null +++ b/js/src/tests/test262/built-ins/Number/prototype/toExponential/infinity.js @@ -0,0 +1,30 @@ +// Copyright (C) 2016 The V8 Project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-number.prototype.toexponential +description: > + Return signed Infinity string if this is Infinity +info: | + Number.prototype.toExponential ( fractionDigits ) + + 1. Let x be ? thisNumberValue(this value). + [...] + 5. Let s be the empty String. + 6. If x < 0, then + a. Let s be "-". + b. Let x be -x. + 7. If x = +∞, then + a. Return the concatenation of the Strings s and "Infinity". + [...] +---*/ + +assert.sameValue((+Infinity).toExponential(1000), "Infinity", "Infinity value"); +var n = new Number(+Infinity); +assert.sameValue(n.toExponential(1000), "Infinity", "Number Infinity"); + +assert.sameValue((-Infinity).toExponential(1000), "-Infinity", "-Infinity value"); +var n = new Number(-Infinity); +assert.sameValue(n.toExponential(1000), "-Infinity", "Number -Infinity"); + +reportCompare(0, 0); diff --git a/js/src/tests/test262/built-ins/Number/prototype/toExponential/length.js b/js/src/tests/test262/built-ins/Number/prototype/toExponential/length.js new file mode 100644 index 0000000000..0c146d1500 --- /dev/null +++ b/js/src/tests/test262/built-ins/Number/prototype/toExponential/length.js @@ -0,0 +1,31 @@ +// Copyright (C) 2015 André Bargull. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +es6id: 20.1.3.2 +description: > + Number.prototype.toExponential.length is 1. +info: | + Number.prototype.toExponential ( fractionDigits ) + + 17 ECMAScript Standard Built-in Objects: + Every built-in Function object, including constructors, has a length + property whose value is an integer. Unless otherwise specified, this + value is equal to the largest number of named arguments shown in the + subclause headings for the function description, including optional + parameters. However, rest parameters shown using the form “...name” + are not included in the default argument count. + + Unless otherwise specified, the length property of a built-in Function + object has the attributes { [[Writable]]: false, [[Enumerable]]: false, + [[Configurable]]: true }. +includes: [propertyHelper.js] +---*/ + +assert.sameValue(Number.prototype.toExponential.length, 1); + +verifyNotEnumerable(Number.prototype.toExponential, "length"); +verifyNotWritable(Number.prototype.toExponential, "length"); +verifyConfigurable(Number.prototype.toExponential, "length"); + +reportCompare(0, 0); diff --git a/js/src/tests/test262/built-ins/Number/prototype/toExponential/name.js b/js/src/tests/test262/built-ins/Number/prototype/toExponential/name.js new file mode 100644 index 0000000000..a92b59ba75 --- /dev/null +++ b/js/src/tests/test262/built-ins/Number/prototype/toExponential/name.js @@ -0,0 +1,28 @@ +// Copyright (C) 2015 André Bargull. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +es6id: 20.1.3.2 +description: > + Number.prototype.toExponential.name is "toExponential". +info: | + Number.prototype.toExponential ( fractionDigits ) + + 17 ECMAScript Standard Built-in Objects: + Every built-in Function object, including constructors, that is not + identified as an anonymous function has a name property whose value + is a String. + + Unless otherwise specified, the name property of a built-in Function + object, if it exists, has the attributes { [[Writable]]: false, + [[Enumerable]]: false, [[Configurable]]: true }. +includes: [propertyHelper.js] +---*/ + +assert.sameValue(Number.prototype.toExponential.name, "toExponential"); + +verifyNotEnumerable(Number.prototype.toExponential, "name"); +verifyNotWritable(Number.prototype.toExponential, "name"); +verifyConfigurable(Number.prototype.toExponential, "name"); + +reportCompare(0, 0); diff --git a/js/src/tests/test262/built-ins/Number/prototype/toExponential/nan.js b/js/src/tests/test262/built-ins/Number/prototype/toExponential/nan.js new file mode 100644 index 0000000000..0a5e46535c --- /dev/null +++ b/js/src/tests/test262/built-ins/Number/prototype/toExponential/nan.js @@ -0,0 +1,23 @@ +// Copyright (C) 2016 The V8 Project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-number.prototype.toexponential +description: > + Return "NaN" if this is NaN +info: | + Number.prototype.toExponential ( fractionDigits ) + + 1. Let x be ? thisNumberValue(this value). + 2. Let f be ? ToInteger(fractionDigits). + 3. Assert: f is 0, when fractionDigits is undefined. + 4. If x is NaN, return the String "NaN". + [...] +---*/ + +assert.sameValue(NaN.toExponential(Infinity), "NaN", "NaN value"); + +var n = new Number(NaN); +assert.sameValue(n.toExponential(NaN), "NaN", "NaN obj"); + +reportCompare(0, 0); diff --git a/js/src/tests/test262/built-ins/Number/prototype/toExponential/not-a-constructor.js b/js/src/tests/test262/built-ins/Number/prototype/toExponential/not-a-constructor.js new file mode 100644 index 0000000000..bbf60fe972 --- /dev/null +++ b/js/src/tests/test262/built-ins/Number/prototype/toExponential/not-a-constructor.js @@ -0,0 +1,35 @@ +// Copyright (C) 2020 Rick Waldron. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-ecmascript-standard-built-in-objects +description: > + Number.prototype.toExponential does not implement [[Construct]], is not new-able +info: | + ECMAScript Function Objects + + Built-in function objects that are not identified as constructors do not + implement the [[Construct]] internal method unless otherwise specified in + the description of a particular function. + + sec-evaluatenew + + ... + 7. If IsConstructor(constructor) is false, throw a TypeError exception. + ... +includes: [isConstructor.js] +features: [Reflect.construct, arrow-function] +---*/ + +assert.sameValue( + isConstructor(Number.prototype.toExponential), + false, + 'isConstructor(Number.prototype.toExponential) must return false' +); + +assert.throws(TypeError, () => { + new Number.prototype.toExponential(); +}, '`new Number.prototype.toExponential()` throws TypeError'); + + +reportCompare(0, 0); diff --git a/js/src/tests/test262/built-ins/Number/prototype/toExponential/prop-desc.js b/js/src/tests/test262/built-ins/Number/prototype/toExponential/prop-desc.js new file mode 100644 index 0000000000..9e66b6c426 --- /dev/null +++ b/js/src/tests/test262/built-ins/Number/prototype/toExponential/prop-desc.js @@ -0,0 +1,19 @@ +// Copyright (C) 2016 The V8 Project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-number.prototype.toexponential +description: > + "toExponential" property of Number.prototype +info: | + ES6 section 17: Every other data property described in clauses 18 through 26 + and in Annex B.2 has the attributes { [[Writable]]: true, + [[Enumerable]]: false, [[Configurable]]: true } unless otherwise specified. +includes: [propertyHelper.js] +---*/ + +verifyNotEnumerable(Number.prototype, "toExponential"); +verifyWritable(Number.prototype, "toExponential"); +verifyConfigurable(Number.prototype, "toExponential"); + +reportCompare(0, 0); diff --git a/js/src/tests/test262/built-ins/Number/prototype/toExponential/range.js b/js/src/tests/test262/built-ins/Number/prototype/toExponential/range.js new file mode 100644 index 0000000000..32f36b1ea5 --- /dev/null +++ b/js/src/tests/test262/built-ins/Number/prototype/toExponential/range.js @@ -0,0 +1,21 @@ +// Copyright (C) 2017 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-number.prototype.toexponential +description: Number.prototype.toExponential permits fractionDigits from 0 to 100 +info: | + Number.prototype.toExponential ( fractionDigits ) + + ... + 8. If _p_ < 0 or _p_ > 100, throw a *RangeError* exception. + ... +---*/ + +assert.sameValue((3).toExponential(0), "3e+0"); +assert.throws(RangeError, () => (3).toExponential(-1)); + +assert.sameValue((3).toExponential(100), "3.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000e+0"); +assert.throws(RangeError, () => (3).toExponential(101)); + +reportCompare(0, 0); diff --git a/js/src/tests/test262/built-ins/Number/prototype/toExponential/return-abrupt-tointeger-fractiondigits-symbol.js b/js/src/tests/test262/built-ins/Number/prototype/toExponential/return-abrupt-tointeger-fractiondigits-symbol.js new file mode 100644 index 0000000000..a281c9282d --- /dev/null +++ b/js/src/tests/test262/built-ins/Number/prototype/toExponential/return-abrupt-tointeger-fractiondigits-symbol.js @@ -0,0 +1,23 @@ +// Copyright (C) 2016 The V8 Project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-number.prototype.toexponential +description: > + Return abrupt completion from ToInteger(symbol fractionDigits) +info: | + Number.prototype.toExponential ( fractionDigits ) + + 1. Let x be ? thisNumberValue(this value). + 2. Let f be ? ToInteger(fractionDigits). + [...] +features: [Symbol] +---*/ + +var fd = Symbol("1"); + +assert.throws(TypeError, function() { + NaN.toExponential(fd); +}); + +reportCompare(0, 0); diff --git a/js/src/tests/test262/built-ins/Number/prototype/toExponential/return-abrupt-tointeger-fractiondigits.js b/js/src/tests/test262/built-ins/Number/prototype/toExponential/return-abrupt-tointeger-fractiondigits.js new file mode 100644 index 0000000000..481033a58e --- /dev/null +++ b/js/src/tests/test262/built-ins/Number/prototype/toExponential/return-abrupt-tointeger-fractiondigits.js @@ -0,0 +1,36 @@ +// Copyright (C) 2016 The V8 Project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-number.prototype.toexponential +description: > + Return abrupt completion from ToInteger(fractionDigits) +info: | + Number.prototype.toExponential ( fractionDigits ) + + 1. Let x be ? thisNumberValue(this value). + 2. Let f be ? ToInteger(fractionDigits). + [...] +---*/ + +var fd1 = { + valueOf: function() { + throw new Test262Error(); + } +}; + +var fd2 = { + toString: function() { + throw new Test262Error(); + } +}; + +assert.throws(Test262Error, function() { + NaN.toExponential(fd1); +}, "valueOf"); + +assert.throws(Test262Error, function() { + NaN.toExponential(fd2); +}, "toString"); + +reportCompare(0, 0); diff --git a/js/src/tests/test262/built-ins/Number/prototype/toExponential/return-values.js b/js/src/tests/test262/built-ins/Number/prototype/toExponential/return-values.js new file mode 100644 index 0000000000..a9e15c87a9 --- /dev/null +++ b/js/src/tests/test262/built-ins/Number/prototype/toExponential/return-values.js @@ -0,0 +1,57 @@ +// Copyright (C) 2016 The V8 Project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-number.prototype.toexponential +description: > + Return regular string values +---*/ + +assert.sameValue((123.456).toExponential(0), "1e+2"); +assert.sameValue((123.456).toExponential(1), "1.2e+2"); +assert.sameValue((123.456).toExponential(2), "1.23e+2"); +assert.sameValue((123.456).toExponential(3), "1.235e+2"); +assert.sameValue((123.456).toExponential(4), "1.2346e+2"); +assert.sameValue((123.456).toExponential(5), "1.23456e+2"); +assert.sameValue((123.456).toExponential(6), "1.234560e+2"); +assert.sameValue((123.456).toExponential(7), "1.2345600e+2"); +assert.sameValue((123.456).toExponential(17), "1.23456000000000003e+2"); +assert.sameValue((123.456).toExponential(20), "1.23456000000000003070e+2"); + +assert.sameValue((-123.456).toExponential(0), "-1e+2"); +assert.sameValue((-123.456).toExponential(1), "-1.2e+2"); +assert.sameValue((-123.456).toExponential(2), "-1.23e+2"); +assert.sameValue((-123.456).toExponential(3), "-1.235e+2"); +assert.sameValue((-123.456).toExponential(4), "-1.2346e+2"); +assert.sameValue((-123.456).toExponential(5), "-1.23456e+2"); +assert.sameValue((-123.456).toExponential(6), "-1.234560e+2"); +assert.sameValue((-123.456).toExponential(7), "-1.2345600e+2"); +assert.sameValue((-123.456).toExponential(17), "-1.23456000000000003e+2"); +assert.sameValue((-123.456).toExponential(20), "-1.23456000000000003070e+2"); + +assert.sameValue((0.0001).toExponential(0), "1e-4"); +assert.sameValue((0.0001).toExponential(1), "1.0e-4"); +assert.sameValue((0.0001).toExponential(2), "1.00e-4"); +assert.sameValue((0.0001).toExponential(3), "1.000e-4"); +assert.sameValue((0.0001).toExponential(4), "1.0000e-4"); +assert.sameValue((0.0001).toExponential(16), "1.0000000000000000e-4"); +assert.sameValue((0.0001).toExponential(17), "1.00000000000000005e-4"); +assert.sameValue((0.0001).toExponential(18), "1.000000000000000048e-4"); +assert.sameValue((0.0001).toExponential(19), "1.0000000000000000479e-4"); +assert.sameValue((0.0001).toExponential(20), "1.00000000000000004792e-4"); + +assert.sameValue((0.9999).toExponential(0), "1e+0"); +assert.sameValue((0.9999).toExponential(1), "1.0e+0"); +assert.sameValue((0.9999).toExponential(2), "1.00e+0"); +assert.sameValue((0.9999).toExponential(3), "9.999e-1"); +assert.sameValue((0.9999).toExponential(4), "9.9990e-1"); +assert.sameValue((0.9999).toExponential(16), "9.9990000000000001e-1"); +assert.sameValue((0.9999).toExponential(17), "9.99900000000000011e-1"); +assert.sameValue((0.9999).toExponential(18), "9.999000000000000110e-1"); +assert.sameValue((0.9999).toExponential(19), "9.9990000000000001101e-1"); +assert.sameValue((0.9999).toExponential(20), "9.99900000000000011013e-1"); + +assert.sameValue((25).toExponential(0), "3e+1"); +assert.sameValue((12345).toExponential(3), "1.235e+4"); + +reportCompare(0, 0); diff --git a/js/src/tests/test262/built-ins/Number/prototype/toExponential/shell.js b/js/src/tests/test262/built-ins/Number/prototype/toExponential/shell.js new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/js/src/tests/test262/built-ins/Number/prototype/toExponential/shell.js diff --git a/js/src/tests/test262/built-ins/Number/prototype/toExponential/this-is-0-fractiondigits-is-0.js b/js/src/tests/test262/built-ins/Number/prototype/toExponential/this-is-0-fractiondigits-is-0.js new file mode 100644 index 0000000000..da4fafacd1 --- /dev/null +++ b/js/src/tests/test262/built-ins/Number/prototype/toExponential/this-is-0-fractiondigits-is-0.js @@ -0,0 +1,36 @@ +// Copyright (C) 2016 The V8 Project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-number.prototype.toexponential +description: > + Return "0" if this value is 0 and ToInteger(fractionDigits) is 0 +info: | + Number.prototype.toExponential ( fractionDigits ) + + 1. Let x be ? thisNumberValue(this value). + [...] + 9. If x = 0, then + a. Let m be the String consisting of f+1 occurrences of the code unit 0x0030 + (DIGIT ZERO). + b. Let e be 0. + [...] + 11. If f ≠ 0, then + [...] + 12. If e = 0, then + a. Let c be "+". + b. Let d be "0". + [...] + 14. Let m be the concatenation of the four Strings m, "e", c, and d. + 15. Return the concatenation of the Strings s and m. +---*/ + +assert.sameValue(Number.prototype.toExponential(0), "0e+0", "Number.prototype"); + +assert.sameValue((0).toExponential(0), "0e+0", "(0).toExponential(0)"); +assert.sameValue((-0).toExponential(0), "0e+0", "(-0).toExponential(0)"); + +assert.sameValue((0).toExponential(-0), "0e+0", "(0).toExponential(-0)"); +assert.sameValue((-0).toExponential(-0), "0e+0", "(-0).toExponential(-0)"); + +reportCompare(0, 0); diff --git a/js/src/tests/test262/built-ins/Number/prototype/toExponential/this-is-0-fractiondigits-is-not-0.js b/js/src/tests/test262/built-ins/Number/prototype/toExponential/this-is-0-fractiondigits-is-not-0.js new file mode 100644 index 0000000000..0fbdf1bc42 --- /dev/null +++ b/js/src/tests/test262/built-ins/Number/prototype/toExponential/this-is-0-fractiondigits-is-not-0.js @@ -0,0 +1,42 @@ +// Copyright (C) 2016 The V8 Project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-number.prototype.toexponential +description: > + Return string value for this value = 0 and fractionDigits != 0 +info: | + Number.prototype.toExponential ( fractionDigits ) + + 1. Let x be ? thisNumberValue(this value). + [...] + 9. If x = 0, then + a. Let m be the String consisting of f+1 occurrences of the code unit 0x0030 + (DIGIT ZERO). + b. Let e be 0. + [...] + 11. If f ≠ 0, then + a. Let a be the first element of m, and let b be the remaining f elements of m. + b. Let m be the concatenation of the three Strings a, ".", and b. + 12. If e = 0, then + a. Let c be "+". + b. Let d be "0". + [...] + 14. Let m be the concatenation of the four Strings m, "e", c, and d. + 15. Return the concatenation of the Strings s and m. +---*/ + +assert.sameValue((0).toExponential(1), "0.0e+0", "0 and 1"); +assert.sameValue((0).toExponential(2), "0.00e+0", "0 and 2"); +assert.sameValue((0).toExponential(7), "0.0000000e+0", "0 and 7"); +assert.sameValue((0).toExponential(20), "0.00000000000000000000e+0", "0 and 20"); + +assert.sameValue((-0).toExponential(1), "0.0e+0", "-0 and 1"); +assert.sameValue((-0).toExponential(2), "0.00e+0", "-0 and 2"); +assert.sameValue((-0).toExponential(7), "0.0000000e+0", "-0 and 7"); +assert.sameValue((-0).toExponential(20), "0.00000000000000000000e+0", "-0 and 20"); + +assert.sameValue((0.0).toExponential(4), "0.0000e+0", "0.0 and 4"); +assert.sameValue((-0.0).toExponential(4), "0.0000e+0", "-0.0 and 4"); + +reportCompare(0, 0); diff --git a/js/src/tests/test262/built-ins/Number/prototype/toExponential/this-type-not-number-or-number-object.js b/js/src/tests/test262/built-ins/Number/prototype/toExponential/this-type-not-number-or-number-object.js new file mode 100644 index 0000000000..30987186be --- /dev/null +++ b/js/src/tests/test262/built-ins/Number/prototype/toExponential/this-type-not-number-or-number-object.js @@ -0,0 +1,69 @@ +// Copyright (C) 2016 The V8 Project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-number.prototype.toexponential +description: > + Throws a TypeError if this value is not a number object or value +info: | + 20.1.3 Properties of the Number Prototype Object + + The Number prototype object is the intrinsic object %NumberPrototype%. The + Number prototype object is an ordinary object. The Number prototype is itself + a Number object; it has a [[NumberData]] internal slot with the value +0. + + [...] + The abstract operation thisNumberValue(value) performs the following steps: + + 1. If Type(value) is Number, return value. + 2. If Type(value) is Object and value has a [[NumberData]] internal slot, then + a. Assert: value's [[NumberData]] internal slot is a Number value. + b. Return the value of value's [[NumberData]] internal slot. + 3. Throw a TypeError exception. + + Number.prototype.toExponential ( fractionDigits ) + + 1. Let x be ? thisNumberValue(this value). + [...] +features: [Symbol] +---*/ + +var toExponential = Number.prototype.toExponential; + +assert.throws(TypeError, function() { + toExponential.call({}, 1); +}, "{}"); + +assert.throws(TypeError, function() { + toExponential.call("1", 1); +}, "string"); + +assert.throws(TypeError, function() { + toExponential.call(Number, 1); +}, "Number"); + +assert.throws(TypeError, function() { + toExponential.call(true, 1); +}, "true"); + +assert.throws(TypeError, function() { + toExponential.call(false, 1); +}, "false"); + +assert.throws(TypeError, function() { + toExponential.call(null, 1); +}, "null"); + +assert.throws(TypeError, function() { + toExponential.call(undefined, 1); +}, "undefined"); + +assert.throws(TypeError, function() { + toExponential.call(Symbol("1"), 1); +}, "symbol"); + +assert.throws(TypeError, function() { + toExponential.call([], 1); +}, "[]"); + +reportCompare(0, 0); diff --git a/js/src/tests/test262/built-ins/Number/prototype/toExponential/tointeger-fractiondigits.js b/js/src/tests/test262/built-ins/Number/prototype/toExponential/tointeger-fractiondigits.js new file mode 100644 index 0000000000..be496bde7f --- /dev/null +++ b/js/src/tests/test262/built-ins/Number/prototype/toExponential/tointeger-fractiondigits.js @@ -0,0 +1,36 @@ +// Copyright (C) 2016 The V8 Project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-number.prototype.toexponential +description: > + ToInteger(fractionDigits operations) +info: | + Number.prototype.toExponential ( fractionDigits ) + + 1. Let x be ? thisNumberValue(this value). + 2. Let f be ? ToInteger(fractionDigits). + [...] +---*/ + +assert.sameValue((123.456).toExponential(0.1), "1e+2", "0.1"); +assert.sameValue((123.456).toExponential(-0.1), "1e+2", "-0.1"); +assert.sameValue((123.456).toExponential(0.9), "1e+2", "0.9"); +assert.sameValue((123.456).toExponential(-0.9), "1e+2", "-0.9"); + +assert.sameValue((123.456).toExponential(false), "1e+2", "false"); +assert.sameValue((123.456).toExponential(true), "1.2e+2", "true"); + +assert.sameValue((123.456).toExponential(NaN), "1e+2", "NaN"); +assert.sameValue((123.456).toExponential(null), "1e+2", "null"); + +assert.sameValue((123.456).toExponential("2"), "1.23e+2", "string"); +assert.sameValue((123.456).toExponential(""), "1e+2", "the empty string"); + +assert.sameValue((123.456).toExponential([]), "1e+2", "[]"); +assert.sameValue((123.456).toExponential([2]), "1.23e+2", "[2]"); + +assert.sameValue((0).toExponential(undefined), "0e+0", "undefined"); +assert.sameValue((0).toExponential(), "0e+0", "no arg"); + +reportCompare(0, 0); diff --git a/js/src/tests/test262/built-ins/Number/prototype/toExponential/undefined-fractiondigits.js b/js/src/tests/test262/built-ins/Number/prototype/toExponential/undefined-fractiondigits.js new file mode 100644 index 0000000000..9194721ad6 --- /dev/null +++ b/js/src/tests/test262/built-ins/Number/prototype/toExponential/undefined-fractiondigits.js @@ -0,0 +1,40 @@ +// Copyright (C) 2016 The V8 Project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-number.prototype.toexponential +description: > + Handle undefined fractionDigits, not only casting it to 0 +info: | + Number.prototype.toExponential ( fractionDigits ) + + 1. Let x be ? thisNumberValue(this value). + 2. Let f be ? ToInteger(fractionDigits). + [...] + 10. Else x ≠ 0, + a. If fractionDigits is not undefined, then + i. Let e and n be integers such that 10f ≤ n < 10f+1 and for which the + exact mathematical value of n × 10e-f - x is as close to zero as + possible. If there are two such sets of e and n, pick the e and n for + which n × 10e-f is larger. + b. Else fractionDigits is undefined, + i. Let e, n, and f be integers such that f ≥ 0, 10f ≤ n < 10f+1, the + Number value for n × 10e-f is x, and f is as small as possible. Note + that the decimal representation of n has f+1 digits, n is not divisible + by 10, and the least significant digit of n is not necessarily uniquely + determined by these criteria. +---*/ + +assert.sameValue((123.456).toExponential(undefined), "1.23456e+2", "undefined"); +assert.sameValue((123.456).toExponential(), "1.23456e+2", "no arg"); +assert.sameValue((123.456).toExponential(0), "1e+2", "0"); + +assert.sameValue((1.1e-32).toExponential(undefined), "1.1e-32", "undefined"); +assert.sameValue((1.1e-32).toExponential(), "1.1e-32", "no arg"); +assert.sameValue((1.1e-32).toExponential(0), "1e-32", "0"); + +assert.sameValue((100).toExponential(undefined), "1e+2", "undefined"); +assert.sameValue((100).toExponential(), "1e+2", "no arg"); +assert.sameValue((100).toExponential(0), "1e+2", "0"); + +reportCompare(0, 0); |