test262/test/built-ins/Number/string-numeric-separator-li...

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// Copyright (C) 2017 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: prod-NumericLiteralSeparator
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description: NumericLiteralSeparator is not valid on string conversions for ToNumber operations
info: |
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DecimalDigits `.` DecimalDigits ExponentPart_opt `+` DecimalDigits
NumericLiteralSeparator ::
_
DecimalLiteral ::
DecimalIntegerLiteral . DecimalDigits_opt ExponentPart_opt
DecimalDigits ::
...
DecimalDigits NumericLiteralSeparator DecimalDigit
SignedInteger ::
...
+ DecimalDigits
...
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features: [numeric-separator-literal]
---*/
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assert.sameValue(Number("1.0e+1_0"), NaN, "1.0e+1_0");