aboutsummaryrefslogtreecommitdiffstats
path: root/test/language/literals/numeric
diff options
context:
space:
mode:
Diffstat (limited to 'test/language/literals/numeric')
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-bil-bd-nsl-bd-err.js32
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-bil-bd-nsl-bd.js27
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-bil-bd-nsl-bds.js27
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-bil-bds-nsl-bd.js27
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-bil-bds-nsl-bds.js27
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-bil-nsl-bd-dunder-err.js32
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-bil-nsl-bd-err.js32
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-dd-dot-dd-ep-sign-minus-dd-nsl-dd.js26
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-dd-dot-dd-ep-sign-minus-dds-nsl-dd.js26
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-dd-dot-dd-ep-sign-plus-dd-nsl-dd.js26
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-dd-dot-dd-ep-sign-plus-dds-nsl-dd.js27
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-dd-nsl-dd-one-of.js34
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-dd-nsl-dds-dunder-err.js24
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-dd-nsl-err.js26
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-dds-dot-dd-nsl-dd-ep-dd.js25
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-dds-nsl-dd.js26
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-dds-nsl-dds-dunder-err.js24
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-dds-nsl-err.js27
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-dil-dot-dds-nsl-ep-dd-err.js26
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-dil-dot-nsl-ep-err.js29
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-dil-dot-nsl-err.js27
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-dot-dd-nsl-dd-ep.js25
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-dot-dd-nsl-dds-ep.js25
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-dot-dds-nsl-dd-ep.js25
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-dot-dds-nsl-dds-ep.js25
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-dot-dds-nsl-ep-err.js28
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-dot-nsl-ep-err.js29
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-dot-nsl-err.js27
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-hil-hd-nsl-hd-err.js32
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-hil-hd-nsl-hd.js27
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-hil-hd-nsl-hds.js27
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-hil-hds-nsl-hd.js27
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-hil-hds-nsl-hds.js27
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-hil-nsl-hd-dunder-err.js32
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-hil-nsl-hd-err.js32
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-hil-od-nsl-od-one-of.js47
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-nzd-nsl-dd-one-of.js38
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-nzd-nsl-dd.js25
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-nzd-nsl-dds-dunder-err.js27
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-nzd-nsl-dds-leading-zero-err.js25
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-nzd-nsl-dds.js25
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-oil-nsl-od-dunder-err.js32
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-oil-nsl-od-err.js32
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-oil-od-nsl-od-err.js32
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-oil-od-nsl-od-one-of.js33
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-oil-od-nsl-od.js27
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-oil-od-nsl-ods.js27
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-oil-ods-nsl-od.js27
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-oil-ods-nsl-ods.js27
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-sign-minus-dds-nsl-dd.js26
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-sign-plus-dds-nsl-dd.js27
-rw-r--r--test/language/literals/numeric/numeric-separator-literal-unicode-err.js24
52 files changed, 1466 insertions, 0 deletions
diff --git a/test/language/literals/numeric/numeric-separator-literal-bil-bd-nsl-bd-err.js b/test/language/literals/numeric/numeric-separator-literal-bil-bd-nsl-bd-err.js
new file mode 100644
index 000000000..44a9cb1ee
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-bil-bd-nsl-bd-err.js
@@ -0,0 +1,32 @@
+// 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
+description: >
+ NumericLiteralSeparator may not be the appear adjacent to `0b` | `0B` in a
+ BinaryIntegerLiteral
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ BinaryIntegerLiteral ::
+ 0b BinaryDigits
+ 0B BinaryDigits
+
+ BinaryDigits ::
+ BinaryDigit
+ BinaryDigits BinaryDigit
+ BinaryDigits NumericLiteralSeparator BinaryDigit
+
+ BinaryDigit :: one of
+ 0 1
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+0b_1
diff --git a/test/language/literals/numeric/numeric-separator-literal-bil-bd-nsl-bd.js b/test/language/literals/numeric/numeric-separator-literal-bil-bd-nsl-bd.js
new file mode 100644
index 000000000..f9d5d3cf0
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-bil-bd-nsl-bd.js
@@ -0,0 +1,27 @@
+// 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
+description: >
+ `0b` | `0B` BinaryDigit NumericLiteralSeparator BinaryDigit
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ BinaryIntegerLiteral ::
+ 0b BinaryDigits
+ 0B BinaryDigits
+
+ BinaryDigits ::
+ BinaryDigit
+ BinaryDigits BinaryDigit
+ BinaryDigits NumericLiteralSeparator BinaryDigit
+
+ BinaryDigit :: one of
+ 0 1
+
+---*/
+
+assert.sameValue(0b0_1, 0b01);
+assert.sameValue(0B0_1, 0B01);
diff --git a/test/language/literals/numeric/numeric-separator-literal-bil-bd-nsl-bds.js b/test/language/literals/numeric/numeric-separator-literal-bil-bd-nsl-bds.js
new file mode 100644
index 000000000..26b19114f
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-bil-bd-nsl-bds.js
@@ -0,0 +1,27 @@
+// 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
+description: >
+ `0b` | `0B` BinaryDigit NumericLiteralSeparator BinaryDigit
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ BinaryIntegerLiteral ::
+ 0b BinaryDigits
+ 0B BinaryDigits
+
+ BinaryDigits ::
+ BinaryDigit
+ BinaryDigits BinaryDigit
+ BinaryDigits NumericLiteralSeparator BinaryDigit
+
+ BinaryDigit :: one of
+ 0 1
+
+---*/
+
+assert.sameValue(0b0_10, 0b010);
+assert.sameValue(0B0_10, 0B010);
diff --git a/test/language/literals/numeric/numeric-separator-literal-bil-bds-nsl-bd.js b/test/language/literals/numeric/numeric-separator-literal-bil-bds-nsl-bd.js
new file mode 100644
index 000000000..323259549
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-bil-bds-nsl-bd.js
@@ -0,0 +1,27 @@
+// 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
+description: >
+ `0b` | `0B` BinaryDigits NumericLiteralSeparator BinaryDigit
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ BinaryIntegerLiteral ::
+ 0b BinaryDigits
+ 0B BinaryDigits
+
+ BinaryDigits ::
+ BinaryDigit
+ BinaryDigits BinaryDigit
+ BinaryDigits NumericLiteralSeparator BinaryDigit
+
+ BinaryDigit :: one of
+ 0 1
+
+---*/
+
+assert.sameValue(0b01_0, 0b010);
+assert.sameValue(0B01_0, 0B010);
diff --git a/test/language/literals/numeric/numeric-separator-literal-bil-bds-nsl-bds.js b/test/language/literals/numeric/numeric-separator-literal-bil-bds-nsl-bds.js
new file mode 100644
index 000000000..744913f05
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-bil-bds-nsl-bds.js
@@ -0,0 +1,27 @@
+// 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
+description: >
+ `0b` | `0B` BinaryDigits NumericLiteralSeparator BinaryDigit
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ BinaryIntegerLiteral ::
+ 0b BinaryDigits
+ 0B BinaryDigits
+
+ BinaryDigits ::
+ BinaryDigit
+ BinaryDigits BinaryDigit
+ BinaryDigits NumericLiteralSeparator BinaryDigit
+
+ BinaryDigit :: one of
+ 0 1
+
+---*/
+
+assert.sameValue(0b01_00, 0b0100);
+assert.sameValue(0B01_00, 0B0100);
diff --git a/test/language/literals/numeric/numeric-separator-literal-bil-nsl-bd-dunder-err.js b/test/language/literals/numeric/numeric-separator-literal-bil-nsl-bd-dunder-err.js
new file mode 100644
index 000000000..3cadb7a81
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-bil-nsl-bd-dunder-err.js
@@ -0,0 +1,32 @@
+// 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
+description: >
+ NumericLiteralSeparator may not appear adjacent to another
+ NumericLiteralSeparator in a BinaryIntegerLiteral
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ BinaryIntegerLiteral ::
+ 0b BinaryDigits
+ 0B BinaryDigits
+
+ BinaryDigits ::
+ BinaryDigit
+ BinaryDigits BinaryDigit
+ BinaryDigits NumericLiteralSeparator BinaryDigit
+
+ BinaryDigit :: one of
+ 0 1
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+0b0__0
diff --git a/test/language/literals/numeric/numeric-separator-literal-bil-nsl-bd-err.js b/test/language/literals/numeric/numeric-separator-literal-bil-nsl-bd-err.js
new file mode 100644
index 000000000..51ac17e97
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-bil-nsl-bd-err.js
@@ -0,0 +1,32 @@
+// 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
+description: >
+ NumericLiteralSeparator may not be the last digit character of a
+ BinaryIntegerLiteral
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ BinaryIntegerLiteral ::
+ 0b BinaryDigits
+ 0B BinaryDigits
+
+ BinaryDigits ::
+ BinaryDigit
+ BinaryDigits BinaryDigit
+ BinaryDigits NumericLiteralSeparator BinaryDigit
+
+ BinaryDigit :: one of
+ 0 1
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+0b0_
diff --git a/test/language/literals/numeric/numeric-separator-literal-dd-dot-dd-ep-sign-minus-dd-nsl-dd.js b/test/language/literals/numeric/numeric-separator-literal-dd-dot-dd-ep-sign-minus-dd-nsl-dd.js
new file mode 100644
index 000000000..f7bca1ee7
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-dd-dot-dd-ep-sign-minus-dd-nsl-dd.js
@@ -0,0 +1,26 @@
+// 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
+description: >
+ DecimalDigits `.` DecimalDigits ExponentPart_opt `-` DecimalDigits
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalLiteral ::
+ DecimalIntegerLiteral . DecimalDigits_opt ExponentPart_opt
+
+ DecimalDigits ::
+ ...
+ DecimalDigits NumericLiteralSeparator DecimalDigit
+
+ SignedInteger ::
+ ...
+ - DecimalDigits
+ ...
+
+---*/
+
+assert.sameValue(1.0e-1_0, 1.0e-10);
diff --git a/test/language/literals/numeric/numeric-separator-literal-dd-dot-dd-ep-sign-minus-dds-nsl-dd.js b/test/language/literals/numeric/numeric-separator-literal-dd-dot-dd-ep-sign-minus-dds-nsl-dd.js
new file mode 100644
index 000000000..9057143c6
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-dd-dot-dd-ep-sign-minus-dds-nsl-dd.js
@@ -0,0 +1,26 @@
+// 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
+description: >
+ DecimalDigits `.` DecimalDigits ExponentPart_opt `-` DecimalDigits
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalLiteral ::
+ DecimalIntegerLiteral . DecimalDigits_opt ExponentPart_opt
+
+ DecimalDigits ::
+ ...
+ DecimalDigits NumericLiteralSeparator DecimalDigit
+
+ SignedInteger ::
+ ...
+ - DecimalDigits
+ ...
+
+---*/
+
+assert.sameValue(1.0e-10_0, 1.0e-100);
diff --git a/test/language/literals/numeric/numeric-separator-literal-dd-dot-dd-ep-sign-plus-dd-nsl-dd.js b/test/language/literals/numeric/numeric-separator-literal-dd-dot-dd-ep-sign-plus-dd-nsl-dd.js
new file mode 100644
index 000000000..ac5b67c2b
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-dd-dot-dd-ep-sign-plus-dd-nsl-dd.js
@@ -0,0 +1,26 @@
+// 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
+description: >
+ DecimalDigits `.` DecimalDigits ExponentPart_opt `+` DecimalDigits
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalLiteral ::
+ DecimalIntegerLiteral . DecimalDigits_opt ExponentPart_opt
+
+ DecimalDigits ::
+ ...
+ DecimalDigits NumericLiteralSeparator DecimalDigit
+
+ SignedInteger ::
+ ...
+ + DecimalDigits
+ ...
+
+---*/
+
+assert.sameValue(1.0e+1_0, 1.0e+10);
diff --git a/test/language/literals/numeric/numeric-separator-literal-dd-dot-dd-ep-sign-plus-dds-nsl-dd.js b/test/language/literals/numeric/numeric-separator-literal-dd-dot-dd-ep-sign-plus-dds-nsl-dd.js
new file mode 100644
index 000000000..eeeb5f957
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-dd-dot-dd-ep-sign-plus-dds-nsl-dd.js
@@ -0,0 +1,27 @@
+// 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
+description: >
+ DecimalDigits `.` DecimalDigits ExponentPart_opt `+` DecimalDigits
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalLiteral ::
+ DecimalIntegerLiteral . DecimalDigits_opt ExponentPart_opt
+
+ DecimalDigits ::
+ ...
+ DecimalDigits NumericLiteralSeparator DecimalDigit
+
+ SignedInteger ::
+ ...
+ + DecimalDigits
+ ...
+
+---*/
+
+assert.sameValue(1.0e+10_0, 1.0e+100);
+
diff --git a/test/language/literals/numeric/numeric-separator-literal-dd-nsl-dd-one-of.js b/test/language/literals/numeric/numeric-separator-literal-dd-nsl-dd-one-of.js
new file mode 100644
index 000000000..79f5b5ada
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-dd-nsl-dd-one-of.js
@@ -0,0 +1,34 @@
+// 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
+description: NonZeroDigit NumericLiteralSeparator DecimalDigit
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalIntegerLiteral ::
+ ...
+ NonZeroDigit NumericLiteralSeparator_opt DecimalDigits
+
+
+ DecimalDigits ::
+ DecimalDigit
+ ...
+
+ DecimalDigit :: one of
+ 0 1 2 3 4 5 6 7 8 9
+
+---*/
+
+assert.sameValue(1_0, 10);
+assert.sameValue(1_1, 11);
+assert.sameValue(1_2, 12);
+assert.sameValue(1_3, 13);
+assert.sameValue(1_4, 14);
+assert.sameValue(1_5, 15);
+assert.sameValue(1_6, 16);
+assert.sameValue(1_7, 17);
+assert.sameValue(1_8, 18);
+assert.sameValue(1_9, 19);
diff --git a/test/language/literals/numeric/numeric-separator-literal-dd-nsl-dds-dunder-err.js b/test/language/literals/numeric/numeric-separator-literal-dd-nsl-dds-dunder-err.js
new file mode 100644
index 000000000..800714be2
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-dd-nsl-dds-dunder-err.js
@@ -0,0 +1,24 @@
+// 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
+description: >
+ NumericLiteralSeparator may not appear adjacent to another
+ NumericLiteralSeparator in a DecimalIntegerLiteral
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalIntegerLiteral ::
+ ...
+ NonZeroDigit NumericLiteralSeparator_opt DecimalDigits
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+1__0123456789
diff --git a/test/language/literals/numeric/numeric-separator-literal-dd-nsl-err.js b/test/language/literals/numeric/numeric-separator-literal-dd-nsl-err.js
new file mode 100644
index 000000000..11b89ce2c
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-dd-nsl-err.js
@@ -0,0 +1,26 @@
+// 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
+description: >
+ NumericLiteralSeparator may not be the last digit character
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalLiteral ::
+ DecimalIntegerLiteral . DecimalDigits_opt ExponentPart_opt
+
+ DecimalDigits ::
+ ...
+ DecimalDigits NumericLiteralSeparator DecimalDigit
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+1_
diff --git a/test/language/literals/numeric/numeric-separator-literal-dds-dot-dd-nsl-dd-ep-dd.js b/test/language/literals/numeric/numeric-separator-literal-dds-dot-dd-nsl-dd-ep-dd.js
new file mode 100644
index 000000000..a3f78d506
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-dds-dot-dd-nsl-dd-ep-dd.js
@@ -0,0 +1,25 @@
+// 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
+description: >
+ DecimalDigits `.` DecimalDigits NumericLiteralSeparator DecimalDigits
+ ExponentPart SignedInteger
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalLiteral ::
+ . DecimalDigits ExponentPart_opt
+
+ DecimalDigits ::
+ ...
+ DecimalDigits NumericLiteralSeparator DecimalDigit
+
+ ExponentIndicator :: one of
+ e E
+
+---*/
+
+assert.sameValue(10.00_01e2, 10.0001e2);
diff --git a/test/language/literals/numeric/numeric-separator-literal-dds-nsl-dd.js b/test/language/literals/numeric/numeric-separator-literal-dds-nsl-dd.js
new file mode 100644
index 000000000..3ca1dee1e
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-dds-nsl-dd.js
@@ -0,0 +1,26 @@
+// 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
+description: DecimalDigits NumericLiteralSeparator DecimalDigit
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalDigits ::
+ ...
+ DecimalDigits NumericLiteralSeparator DecimalDigit
+
+---*/
+
+assert.sameValue(123456789_0, 1234567890);
+assert.sameValue(123456789_1, 1234567891);
+assert.sameValue(123456789_2, 1234567892);
+assert.sameValue(123456789_3, 1234567893);
+assert.sameValue(123456789_4, 1234567894);
+assert.sameValue(123456789_5, 1234567895);
+assert.sameValue(123456789_6, 1234567896);
+assert.sameValue(123456789_7, 1234567897);
+assert.sameValue(123456789_8, 1234567898);
+assert.sameValue(123456789_9, 1234567899);
diff --git a/test/language/literals/numeric/numeric-separator-literal-dds-nsl-dds-dunder-err.js b/test/language/literals/numeric/numeric-separator-literal-dds-nsl-dds-dunder-err.js
new file mode 100644
index 000000000..560fe2357
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-dds-nsl-dds-dunder-err.js
@@ -0,0 +1,24 @@
+// 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
+description: >
+ NumericLiteralSeparator may not appear adjacent to another
+ NumericLiteralSeparator in DecimalIntegerLiteral
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalIntegerLiteral ::
+ ...
+ NonZeroDigit NumericLiteralSeparator_opt DecimalDigits
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+10__0123456789
diff --git a/test/language/literals/numeric/numeric-separator-literal-dds-nsl-err.js b/test/language/literals/numeric/numeric-separator-literal-dds-nsl-err.js
new file mode 100644
index 000000000..a72b521e7
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-dds-nsl-err.js
@@ -0,0 +1,27 @@
+// 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
+description: >
+ NumericLiteralSeparator may not be the last digit character of a
+ DecimalLiteral
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalLiteral ::
+ DecimalIntegerLiteral . DecimalDigits_opt ExponentPart_opt
+
+ DecimalDigits ::
+ ...
+ DecimalDigits NumericLiteralSeparator DecimalDigit
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+10_
diff --git a/test/language/literals/numeric/numeric-separator-literal-dil-dot-dds-nsl-ep-dd-err.js b/test/language/literals/numeric/numeric-separator-literal-dil-dot-dds-nsl-ep-dd-err.js
new file mode 100644
index 000000000..ce96ca079
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-dil-dot-dds-nsl-ep-dd-err.js
@@ -0,0 +1,26 @@
+// 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
+description: >
+ NumericLiteralSeparator may not appear adjacent to ExponentPart
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalLiteral ::
+ DecimalIntegerLiteral . DecimalDigits_opt ExponentPart_opt
+
+ DecimalDigits ::
+ ...
+ DecimalDigits NumericLiteralSeparator DecimalDigit
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+10.0_e1
diff --git a/test/language/literals/numeric/numeric-separator-literal-dil-dot-nsl-ep-err.js b/test/language/literals/numeric/numeric-separator-literal-dil-dot-nsl-ep-err.js
new file mode 100644
index 000000000..9b2c418be
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-dil-dot-nsl-ep-err.js
@@ -0,0 +1,29 @@
+// 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
+description: >
+ NumericLiteralSeparator may not appear between `.` and ExponentPart
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalLiteral ::
+ DecimalIntegerLiteral . DecimalDigits_opt ExponentPart_opt
+
+ DecimalDigits ::
+ ...
+ DecimalDigits NumericLiteralSeparator DecimalDigit
+
+ ExponentIndicator :: one of
+ e E
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+10._e1
diff --git a/test/language/literals/numeric/numeric-separator-literal-dil-dot-nsl-err.js b/test/language/literals/numeric/numeric-separator-literal-dil-dot-nsl-err.js
new file mode 100644
index 000000000..6d7542eb7
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-dil-dot-nsl-err.js
@@ -0,0 +1,27 @@
+// 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
+description: >
+ NumericLiteralSeparator may not be the last digit character of a
+ DecimalLiteral
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalLiteral ::
+ DecimalIntegerLiteral . DecimalDigits_opt ExponentPart_opt
+
+ DecimalDigits ::
+ ...
+ DecimalDigits NumericLiteralSeparator DecimalDigit
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+10._
diff --git a/test/language/literals/numeric/numeric-separator-literal-dot-dd-nsl-dd-ep.js b/test/language/literals/numeric/numeric-separator-literal-dot-dd-nsl-dd-ep.js
new file mode 100644
index 000000000..26cf232cf
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-dot-dd-nsl-dd-ep.js
@@ -0,0 +1,25 @@
+// 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
+description: >
+ `.` DecimalDigit NumericLiteralSeparator DecimalDigit ExponentPart
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalLiteral ::
+ . DecimalDigits ExponentPart_opt
+
+ DecimalDigits ::
+ DecimalDigit
+ ...
+ DecimalDigits NumericLiteralSeparator DecimalDigit
+
+ ExponentIndicator :: one of
+ e E
+
+---*/
+
+assert.sameValue(.0_1e2, .01e2);
diff --git a/test/language/literals/numeric/numeric-separator-literal-dot-dd-nsl-dds-ep.js b/test/language/literals/numeric/numeric-separator-literal-dot-dd-nsl-dds-ep.js
new file mode 100644
index 000000000..0ded986ab
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-dot-dd-nsl-dds-ep.js
@@ -0,0 +1,25 @@
+// 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
+description: >
+ `.` DecimalDigit NumericLiteralSeparator DecimalDigits ExponentPart
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalLiteral ::
+ . DecimalDigits ExponentPart_opt
+
+ DecimalDigits ::
+ DecimalDigit
+ ...
+ DecimalDigits NumericLiteralSeparator DecimalDigit
+
+ ExponentIndicator :: one of
+ e E
+
+---*/
+
+assert.sameValue(.1_01e2, .101e2);
diff --git a/test/language/literals/numeric/numeric-separator-literal-dot-dds-nsl-dd-ep.js b/test/language/literals/numeric/numeric-separator-literal-dot-dds-nsl-dd-ep.js
new file mode 100644
index 000000000..e3acbad8a
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-dot-dds-nsl-dd-ep.js
@@ -0,0 +1,25 @@
+// 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
+description: >
+ `.` DecimalDigits NumericLiteralSeparator DecimalDigit ExponentPart
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalLiteral ::
+ . DecimalDigits ExponentPart_opt
+
+ DecimalDigits ::
+ DecimalDigit
+ ...
+ DecimalDigits NumericLiteralSeparator DecimalDigit
+
+ ExponentIndicator :: one of
+ e E
+
+---*/
+
+assert.sameValue(.10_1e2, .101e2);
diff --git a/test/language/literals/numeric/numeric-separator-literal-dot-dds-nsl-dds-ep.js b/test/language/literals/numeric/numeric-separator-literal-dot-dds-nsl-dds-ep.js
new file mode 100644
index 000000000..c437ef997
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-dot-dds-nsl-dds-ep.js
@@ -0,0 +1,25 @@
+// 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
+description: >
+ `.` DecimalDigits NumericLiteralSeparator DecimalDigits ExponentPart
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalLiteral ::
+ . DecimalDigits ExponentPart_opt
+
+ DecimalDigits ::
+ DecimalDigit
+ ...
+ DecimalDigits NumericLiteralSeparator DecimalDigit
+
+ ExponentIndicator :: one of
+ e E
+
+---*/
+
+assert.sameValue(.00_01e2, .0001e2);
diff --git a/test/language/literals/numeric/numeric-separator-literal-dot-dds-nsl-ep-err.js b/test/language/literals/numeric/numeric-separator-literal-dot-dds-nsl-ep-err.js
new file mode 100644
index 000000000..f968e63d6
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-dot-dds-nsl-ep-err.js
@@ -0,0 +1,28 @@
+// 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
+description: NumericLiteralSeparator may not appear adjacent to ExponentPart
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalLiteral ::
+ . DecimalDigits ExponentPart_opt
+
+ DecimalDigits ::
+ ...
+ DecimalDigits NumericLiteralSeparator DecimalDigit
+
+ ExponentIndicator :: one of
+ e E
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+.0_e1
diff --git a/test/language/literals/numeric/numeric-separator-literal-dot-nsl-ep-err.js b/test/language/literals/numeric/numeric-separator-literal-dot-nsl-ep-err.js
new file mode 100644
index 000000000..df26f129d
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-dot-nsl-ep-err.js
@@ -0,0 +1,29 @@
+// 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
+description: >
+ NumericLiteralSeparator may not appear between `.` and ExponentPart
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalLiteral ::
+ . DecimalDigits ExponentPart_opt
+
+ DecimalDigits ::
+ ...
+ DecimalDigits NumericLiteralSeparator DecimalDigit
+
+ ExponentIndicator :: one of
+ e E
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+._e1
diff --git a/test/language/literals/numeric/numeric-separator-literal-dot-nsl-err.js b/test/language/literals/numeric/numeric-separator-literal-dot-nsl-err.js
new file mode 100644
index 000000000..322dcbf8e
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-dot-nsl-err.js
@@ -0,0 +1,27 @@
+// 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
+description: >
+ NumericLiteralSeparator may not be the last digit character of a
+ DecimalLiteral, nor adjacent to `.`
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalLiteral ::
+ . DecimalDigits ExponentPart_opt
+
+ DecimalDigits ::
+ ...
+ DecimalDigits NumericLiteralSeparator DecimalDigit
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+._
diff --git a/test/language/literals/numeric/numeric-separator-literal-hil-hd-nsl-hd-err.js b/test/language/literals/numeric/numeric-separator-literal-hil-hd-nsl-hd-err.js
new file mode 100644
index 000000000..d4f73eed2
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-hil-hd-nsl-hd-err.js
@@ -0,0 +1,32 @@
+// 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
+description: >
+ NumericLiteralSeparator may not be the appear adjacent to `0x` | `0X` in a
+ HexIntegerLiteral
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ HexIntegerLiteral ::
+ 0x HexDigits
+ 0X HexDigits
+
+ HexDigits ::
+ HexDigit
+ HexDigits HexDigit
+ HexDigits NumericLiteralSeparator HexDigit
+
+ HexDigit::one of
+ 0 1 2 3 4 5 6 7 8 9 a b c d e f A B C D E F
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+0x_1
diff --git a/test/language/literals/numeric/numeric-separator-literal-hil-hd-nsl-hd.js b/test/language/literals/numeric/numeric-separator-literal-hil-hd-nsl-hd.js
new file mode 100644
index 000000000..f8a33c65f
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-hil-hd-nsl-hd.js
@@ -0,0 +1,27 @@
+// 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
+description: >
+ `0x` | `0X` HexDigit NumericLiteralSeparator HexDigit
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ HexIntegerLiteral ::
+ 0x HexDigits
+ 0X HexDigits
+
+ HexDigits ::
+ HexDigit
+ HexDigits HexDigit
+ HexDigits NumericLiteralSeparator HexDigit
+
+ HexDigit::one of
+ 0 1 2 3 4 5 6 7 8 9 a b c d e f A B C D E F
+
+---*/
+
+assert.sameValue(0x0_1, 0x01);
+assert.sameValue(0X0_1, 0X01);
diff --git a/test/language/literals/numeric/numeric-separator-literal-hil-hd-nsl-hds.js b/test/language/literals/numeric/numeric-separator-literal-hil-hd-nsl-hds.js
new file mode 100644
index 000000000..0561c9ad9
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-hil-hd-nsl-hds.js
@@ -0,0 +1,27 @@
+// 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
+description: >
+ `0x` | `0X` HexDigit NumericLiteralSeparator HexDigit
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ HexIntegerLiteral ::
+ 0x HexDigits
+ 0X HexDigits
+
+ HexDigits ::
+ HexDigit
+ HexDigits HexDigit
+ HexDigits NumericLiteralSeparator HexDigit
+
+ HexDigit::one of
+ 0 1 2 3 4 5 6 7 8 9 a b c d e f A B C D E F
+
+---*/
+
+assert.sameValue(0x0_10, 0x010);
+assert.sameValue(0X0_10, 0X010);
diff --git a/test/language/literals/numeric/numeric-separator-literal-hil-hds-nsl-hd.js b/test/language/literals/numeric/numeric-separator-literal-hil-hds-nsl-hd.js
new file mode 100644
index 000000000..6dff72fa3
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-hil-hds-nsl-hd.js
@@ -0,0 +1,27 @@
+// 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
+description: >
+ `0x` | `0X` HexDigits NumericLiteralSeparator HexDigit
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ HexIntegerLiteral ::
+ 0x HexDigits
+ 0X HexDigits
+
+ HexDigits ::
+ HexDigit
+ HexDigits HexDigit
+ HexDigits NumericLiteralSeparator HexDigit
+
+ HexDigit::one of
+ 0 1 2 3 4 5 6 7 8 9 a b c d e f A B C D E F
+
+---*/
+
+assert.sameValue(0x01_0, 0x010);
+assert.sameValue(0X01_0, 0X010);
diff --git a/test/language/literals/numeric/numeric-separator-literal-hil-hds-nsl-hds.js b/test/language/literals/numeric/numeric-separator-literal-hil-hds-nsl-hds.js
new file mode 100644
index 000000000..2672484cb
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-hil-hds-nsl-hds.js
@@ -0,0 +1,27 @@
+// 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
+description: >
+ `0x` | `0X` HexDigits NumericLiteralSeparator HexDigit
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ HexIntegerLiteral ::
+ 0x HexDigits
+ 0X HexDigits
+
+ HexDigits ::
+ HexDigit
+ HexDigits HexDigit
+ HexDigits NumericLiteralSeparator HexDigit
+
+ HexDigit::one of
+ 0 1 2 3 4 5 6 7 8 9 a b c d e f A B C D E F
+
+---*/
+
+assert.sameValue(0x01_00, 0x0100);
+assert.sameValue(0X01_00, 0X0100);
diff --git a/test/language/literals/numeric/numeric-separator-literal-hil-nsl-hd-dunder-err.js b/test/language/literals/numeric/numeric-separator-literal-hil-nsl-hd-dunder-err.js
new file mode 100644
index 000000000..dcf0f40a3
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-hil-nsl-hd-dunder-err.js
@@ -0,0 +1,32 @@
+// 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
+description: >
+ NumericLiteralSeparator may not appear adjacent to another
+ NumericLiteralSeparator in a HexIntegerLiteral
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ HexIntegerLiteral ::
+ 0x HexDigits
+ 0X HexDigits
+
+ HexDigits ::
+ HexDigit
+ HexDigits HexDigit
+ HexDigits NumericLiteralSeparator HexDigit
+
+ HexDigit::one of
+ 0 1 2 3 4 5 6 7 8 9 a b c d e f A B C D E F
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+0x0__0
diff --git a/test/language/literals/numeric/numeric-separator-literal-hil-nsl-hd-err.js b/test/language/literals/numeric/numeric-separator-literal-hil-nsl-hd-err.js
new file mode 100644
index 000000000..7205cbb21
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-hil-nsl-hd-err.js
@@ -0,0 +1,32 @@
+// 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
+description: >
+ NumericLiteralSeparator may not be the last digit character of a
+ HexIntegerLiteral
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ HexIntegerLiteral ::
+ 0x HexDigits
+ 0X HexDigits
+
+ HexDigits ::
+ HexDigit
+ HexDigits HexDigit
+ HexDigits NumericLiteralSeparator HexDigit
+
+ HexDigit::one of
+ 0 1 2 3 4 5 6 7 8 9 a b c d e f A B C D E F
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+0x0_
diff --git a/test/language/literals/numeric/numeric-separator-literal-hil-od-nsl-od-one-of.js b/test/language/literals/numeric/numeric-separator-literal-hil-od-nsl-od-one-of.js
new file mode 100644
index 000000000..3f81986dd
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-hil-od-nsl-od-one-of.js
@@ -0,0 +1,47 @@
+// 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
+description: >
+ `0x` | `0X` HexDigit NumericLiteralSeparator HexDigit
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ HexIntegerLiteral ::
+ 0x HexDigits
+ 0X HexDigits
+
+ HexDigits ::
+ HexDigit
+ HexDigits HexDigit
+ HexDigits NumericLiteralSeparator HexDigit
+
+ HexDigit::one of
+ 0 1 2 3 4 5 6 7 8 9 a b c d e f A B C D E F
+
+---*/
+
+assert.sameValue(0x0_0, 0x00);
+assert.sameValue(0x1_1, 0x11);
+assert.sameValue(0x2_2, 0x22);
+assert.sameValue(0x3_3, 0x33);
+assert.sameValue(0x4_4, 0x44);
+assert.sameValue(0x5_5, 0x55);
+assert.sameValue(0x6_6, 0x66);
+assert.sameValue(0x7_7, 0x77);
+assert.sameValue(0x8_8, 0x88);
+assert.sameValue(0x9_9, 0x99);
+assert.sameValue(0xa_a, 0xaa);
+assert.sameValue(0xb_b, 0xbb);
+assert.sameValue(0xc_c, 0xcc);
+assert.sameValue(0xd_d, 0xdd);
+assert.sameValue(0xe_e, 0xee);
+assert.sameValue(0xf_f, 0xff);
+assert.sameValue(0xA_A, 0xAA);
+assert.sameValue(0xB_B, 0xBB);
+assert.sameValue(0xC_C, 0xCC);
+assert.sameValue(0xD_D, 0xDD);
+assert.sameValue(0xE_E, 0xEE);
+assert.sameValue(0xF_F, 0xFF);
diff --git a/test/language/literals/numeric/numeric-separator-literal-nzd-nsl-dd-one-of.js b/test/language/literals/numeric/numeric-separator-literal-nzd-nsl-dd-one-of.js
new file mode 100644
index 000000000..528546e4b
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-nzd-nsl-dd-one-of.js
@@ -0,0 +1,38 @@
+// 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
+description: NonZeroDigit NumericLiteralSeparator DecimalDigit
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalIntegerLiteral ::
+ ...
+ NonZeroDigit NumericLiteralSeparator_opt DecimalDigits
+
+ NonZeroDigit :: one of
+ 1 2 3 4 5 6 7 8 9
+
+ DecimalDigits ::
+ DecimalDigit
+ ...
+
+ DecimalDigit :: one of
+ 0 1 2 3 4 5 6 7 8 9
+
+---*/
+
+assert.sameValue(1_0, 10);
+assert.sameValue(1_1, 11);
+assert.sameValue(2_2, 22);
+assert.sameValue(3_3, 33);
+assert.sameValue(4_4, 44);
+assert.sameValue(5_5, 55);
+assert.sameValue(6_6, 66);
+assert.sameValue(7_7, 77);
+assert.sameValue(8_8, 88);
+assert.sameValue(9_9, 99);
+
+
diff --git a/test/language/literals/numeric/numeric-separator-literal-nzd-nsl-dd.js b/test/language/literals/numeric/numeric-separator-literal-nzd-nsl-dd.js
new file mode 100644
index 000000000..3f6e166a8
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-nzd-nsl-dd.js
@@ -0,0 +1,25 @@
+// 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
+description: NonZeroDigit NumericLiteralSeparator DecimalDigit
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalIntegerLiteral ::
+ ...
+ NonZeroDigit NumericLiteralSeparator_opt DecimalDigits
+
+ NonZeroDigit :: one of
+ 1 2 3 4 5 6 7 8 9
+
+ DecimalDigits ::
+ ...
+ DecimalDigits DecimalDigit
+ ...
+
+---*/
+
+assert.sameValue(1_1, 11);
diff --git a/test/language/literals/numeric/numeric-separator-literal-nzd-nsl-dds-dunder-err.js b/test/language/literals/numeric/numeric-separator-literal-nzd-nsl-dds-dunder-err.js
new file mode 100644
index 000000000..dd2f133fa
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-nzd-nsl-dds-dunder-err.js
@@ -0,0 +1,27 @@
+// 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
+description: >
+ NumericLiteralSeparator may not appear adjacent to another
+ NumericLiteralSeparator in DecimalIntegerLiteral
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalIntegerLiteral ::
+ ...
+ NonZeroDigit NumericLiteralSeparator_opt DecimalDigits
+
+ NonZeroDigit :: one of
+ 1 2 3 4 5 6 7 8 9
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+0__0123456789
diff --git a/test/language/literals/numeric/numeric-separator-literal-nzd-nsl-dds-leading-zero-err.js b/test/language/literals/numeric/numeric-separator-literal-nzd-nsl-dds-leading-zero-err.js
new file mode 100644
index 000000000..201ac0acd
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-nzd-nsl-dds-leading-zero-err.js
@@ -0,0 +1,25 @@
+// 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
+description: NonZeroDigit NumericLiteralSeparator DecimalDigits
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalIntegerLiteral ::
+ ...
+ NonZeroDigit NumericLiteralSeparator DecimalDigits
+
+ NonZeroDigit :: one of
+ 1 2 3 4 5 6 7 8 9
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+0_0123456789
diff --git a/test/language/literals/numeric/numeric-separator-literal-nzd-nsl-dds.js b/test/language/literals/numeric/numeric-separator-literal-nzd-nsl-dds.js
new file mode 100644
index 000000000..47ea301da
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-nzd-nsl-dds.js
@@ -0,0 +1,25 @@
+// 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
+description: NonZeroDigit NumericLiteralSeparator DecimalDigits
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ DecimalIntegerLiteral ::
+ ...
+ NonZeroDigit NumericLiteralSeparator_opt DecimalDigits
+
+ NonZeroDigit :: one of
+ 1 2 3 4 5 6 7 8 9
+
+ DecimalDigits ::
+ ...
+ DecimalDigits DecimalDigit
+ ...
+
+---*/
+
+assert.sameValue(1_0123456789, 10123456789);
diff --git a/test/language/literals/numeric/numeric-separator-literal-oil-nsl-od-dunder-err.js b/test/language/literals/numeric/numeric-separator-literal-oil-nsl-od-dunder-err.js
new file mode 100644
index 000000000..9be6a2b73
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-oil-nsl-od-dunder-err.js
@@ -0,0 +1,32 @@
+// 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
+description: >
+ NumericLiteralSeparator may not appear adjacent to another
+ NumericLiteralSeparator in a OctalIntegerLiteral
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ OctalIntegerLiteral ::
+ 0o OctalDigits
+ 0O OctalDigits
+
+ OctalDigits ::
+ OctalDigit
+ OctalDigits OctalDigit
+ OctalDigits NumericLiteralSeparator OctalDigit
+
+ OctalDigit :: one of
+ 0 1 2 3 4 5 6 7
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+0o0__0
diff --git a/test/language/literals/numeric/numeric-separator-literal-oil-nsl-od-err.js b/test/language/literals/numeric/numeric-separator-literal-oil-nsl-od-err.js
new file mode 100644
index 000000000..1d8b21e83
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-oil-nsl-od-err.js
@@ -0,0 +1,32 @@
+// 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
+description: >
+ NumericLiteralSeparator may not be the last digit character of an
+ OctalIntegerLiteral
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ OctalIntegerLiteral ::
+ 0o OctalDigits
+ 0O OctalDigits
+
+ OctalDigits ::
+ OctalDigit
+ OctalDigits OctalDigit
+ OctalDigits NumericLiteralSeparator OctalDigit
+
+ OctalDigit :: one of
+ 0 1 2 3 4 5 6 7
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+0o0_
diff --git a/test/language/literals/numeric/numeric-separator-literal-oil-od-nsl-od-err.js b/test/language/literals/numeric/numeric-separator-literal-oil-od-nsl-od-err.js
new file mode 100644
index 000000000..34276984f
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-oil-od-nsl-od-err.js
@@ -0,0 +1,32 @@
+// 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
+description: >
+ NumericLiteralSeparator may not be the appear adjacent to `0o` | `0O` in a
+ OctalIntegerLiteral
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ OctalIntegerLiteral ::
+ 0o OctalDigits
+ 0O OctalDigits
+
+ OctalDigits ::
+ OctalDigit
+ OctalDigits OctalDigit
+ OctalDigits NumericLiteralSeparator OctalDigit
+
+ OctalDigit :: one of
+ 0 1 2 3 4 5 6 7
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+0o_1
diff --git a/test/language/literals/numeric/numeric-separator-literal-oil-od-nsl-od-one-of.js b/test/language/literals/numeric/numeric-separator-literal-oil-od-nsl-od-one-of.js
new file mode 100644
index 000000000..f9d0f6b16
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-oil-od-nsl-od-one-of.js
@@ -0,0 +1,33 @@
+// 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
+description: >
+ `0o` | `0O` OctalDigit NumericLiteralSeparator OctalDigit
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ OctalIntegerLiteral ::
+ 0o OctalDigits
+ 0O OctalDigits
+
+ OctalDigits ::
+ OctalDigit
+ OctalDigits OctalDigit
+ OctalDigits NumericLiteralSeparator OctalDigit
+
+ OctalDigit :: one of
+ 0 1 2 3 4 5 6 7
+
+---*/
+
+assert.sameValue(0o0_0, 0o00);
+assert.sameValue(0o1_1, 0o11);
+assert.sameValue(0o2_2, 0o22);
+assert.sameValue(0o3_3, 0o33);
+assert.sameValue(0o4_4, 0o44);
+assert.sameValue(0o5_5, 0o55);
+assert.sameValue(0o6_6, 0o66);
+assert.sameValue(0o7_7, 0o77);
diff --git a/test/language/literals/numeric/numeric-separator-literal-oil-od-nsl-od.js b/test/language/literals/numeric/numeric-separator-literal-oil-od-nsl-od.js
new file mode 100644
index 000000000..8555afc40
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-oil-od-nsl-od.js
@@ -0,0 +1,27 @@
+// 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
+description: >
+ `0o` | `0O` OctalDigit NumericLiteralSeparator OctalDigit
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ OctalIntegerLiteral ::
+ 0o OctalDigits
+ 0O OctalDigits
+
+ OctalDigits ::
+ OctalDigit
+ OctalDigits OctalDigit
+ OctalDigits NumericLiteralSeparator OctalDigit
+
+ OctalDigit :: one of
+ 0 1 2 3 4 5 6 7
+
+---*/
+
+assert.sameValue(0o0_1, 0o01);
+assert.sameValue(0O0_1, 0O01);
diff --git a/test/language/literals/numeric/numeric-separator-literal-oil-od-nsl-ods.js b/test/language/literals/numeric/numeric-separator-literal-oil-od-nsl-ods.js
new file mode 100644
index 000000000..70bc8396d
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-oil-od-nsl-ods.js
@@ -0,0 +1,27 @@
+// 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
+description: >
+ `0o` | `0O` OctalDigit NumericLiteralSeparator OctalDigit
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ OctalIntegerLiteral ::
+ 0o OctalDigits
+ 0O OctalDigits
+
+ OctalDigits ::
+ OctalDigit
+ OctalDigits OctalDigit
+ OctalDigits NumericLiteralSeparator OctalDigit
+
+ OctalDigit :: one of
+ 0 1 2 3 4 5 6 7
+
+---*/
+
+assert.sameValue(0o0_10, 0o010);
+assert.sameValue(0O0_10, 0O010);
diff --git a/test/language/literals/numeric/numeric-separator-literal-oil-ods-nsl-od.js b/test/language/literals/numeric/numeric-separator-literal-oil-ods-nsl-od.js
new file mode 100644
index 000000000..7083418e1
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-oil-ods-nsl-od.js
@@ -0,0 +1,27 @@
+// 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
+description: >
+ `0o` | `0O` OctalDigits NumericLiteralSeparator OctalDigit
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ OctalIntegerLiteral ::
+ 0o OctalDigits
+ 0O OctalDigits
+
+ OctalDigits ::
+ OctalDigit
+ OctalDigits OctalDigit
+ OctalDigits NumericLiteralSeparator OctalDigit
+
+ OctalDigit :: one of
+ 0 1 2 3 4 5 6 7
+
+---*/
+
+assert.sameValue(0o01_0, 0o010);
+assert.sameValue(0O01_0, 0O010);
diff --git a/test/language/literals/numeric/numeric-separator-literal-oil-ods-nsl-ods.js b/test/language/literals/numeric/numeric-separator-literal-oil-ods-nsl-ods.js
new file mode 100644
index 000000000..2e33e076f
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-oil-ods-nsl-ods.js
@@ -0,0 +1,27 @@
+// 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
+description: >
+ `0o` | `0O` OctalDigits NumericLiteralSeparator OctalDigit
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ OctalIntegerLiteral ::
+ 0o OctalDigits
+ 0O OctalDigits
+
+ OctalDigits ::
+ OctalDigit
+ OctalDigits OctalDigit
+ OctalDigits NumericLiteralSeparator OctalDigit
+
+ OctalDigit :: one of
+ 0 1 2 3 4 5 6 7
+
+---*/
+
+assert.sameValue(0o01_00, 0o0100);
+assert.sameValue(0O01_00, 0O0100);
diff --git a/test/language/literals/numeric/numeric-separator-literal-sign-minus-dds-nsl-dd.js b/test/language/literals/numeric/numeric-separator-literal-sign-minus-dds-nsl-dd.js
new file mode 100644
index 000000000..e11952a61
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-sign-minus-dds-nsl-dd.js
@@ -0,0 +1,26 @@
+// 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
+description: DecimalDigits NumericLiteralSeparator DecimalDigit
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ SignedInteger ::
+ ...
+ - DecimalDigits
+
+---*/
+
+assert.sameValue(-123456789_0, -1234567890);
+assert.sameValue(-123456789_1, -1234567891);
+assert.sameValue(-123456789_2, -1234567892);
+assert.sameValue(-123456789_3, -1234567893);
+assert.sameValue(-123456789_4, -1234567894);
+assert.sameValue(-123456789_5, -1234567895);
+assert.sameValue(-123456789_6, -1234567896);
+assert.sameValue(-123456789_7, -1234567897);
+assert.sameValue(-123456789_8, -1234567898);
+assert.sameValue(-123456789_9, -1234567899);
diff --git a/test/language/literals/numeric/numeric-separator-literal-sign-plus-dds-nsl-dd.js b/test/language/literals/numeric/numeric-separator-literal-sign-plus-dds-nsl-dd.js
new file mode 100644
index 000000000..89050f1a4
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-sign-plus-dds-nsl-dd.js
@@ -0,0 +1,27 @@
+// 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
+description: DecimalDigits NumericLiteralSeparator DecimalDigit
+info: |
+ NumericLiteralSeparator ::
+ _
+
+ SignedInteger ::
+ ...
+ + DecimalDigits
+ ...
+
+---*/
+
+assert.sameValue(+123456789_0, 1234567890);
+assert.sameValue(+123456789_1, 1234567891);
+assert.sameValue(+123456789_2, 1234567892);
+assert.sameValue(+123456789_3, 1234567893);
+assert.sameValue(+123456789_4, 1234567894);
+assert.sameValue(+123456789_5, 1234567895);
+assert.sameValue(+123456789_6, 1234567896);
+assert.sameValue(+123456789_7, 1234567897);
+assert.sameValue(+123456789_8, 1234567898);
+assert.sameValue(+123456789_9, 1234567899);
diff --git a/test/language/literals/numeric/numeric-separator-literal-unicode-err.js b/test/language/literals/numeric/numeric-separator-literal-unicode-err.js
new file mode 100644
index 000000000..4674392f3
--- /dev/null
+++ b/test/language/literals/numeric/numeric-separator-literal-unicode-err.js
@@ -0,0 +1,24 @@
+// 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
+description: >
+ NonZeroDigit NumericLiteralSeparator DecimalDigits sequence expressed with
+ unicode escape sequence
+info: |
+ NumericLiteralSeparator::
+ _
+
+ DecimalIntegerLiteral::
+ ...
+ NonZeroDigit NumericLiteralSeparator_opt DecimalDigits
+
+negative:
+ phase: early
+ type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+1\u005F0123456789