String.prototype.{ trimStart, trimEnd, trimLeft, trimRight } tests

features.txt

@@ -54,6 +54,12 @@ regexp-unicode-property-escapes
 Atomics
 SharedArrayBuffer
 
+# String Trimming
+# https://github.com/tc39/proposal-string-left-right-trim
+# Includes all tests for:
+# String.prototype.{trimStart, trimEnd, trimLeft, trimRight }
+string-trimming
+
 # Standard language features
 #
 # Language features that have been included in a published version of the

test/annexB/built-ins/String/prototype/trimLeft/length.js

@@ -0,0 +1,31 @@
+// Copyright (C) 2017 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-string.prototype.trimLeft
+description: >
+  String.prototype.trimLeft.length is 0.
+info: >
+  String.prototype.trimLeft ( )
+
+  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]
+features: [string-trimming]
+---*/
+
+verifyProperty(String.prototype.trimLeft, "length", {
+  value: 0,
+  enumerable: false,
+  writable: false,
+  configurable: true,
+});

test/annexB/built-ins/String/prototype/trimLeft/name.js

@@ -0,0 +1,28 @@
+// Copyright (C) 2017 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-string.prototype.trimLeft
+description: >
+  String.prototype.trimLeft.name is "trimLeft".
+info: >
+  String.prototype.trimLeft ( )
+
+  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]
+features: [string-trimming]
+---*/
+
+verifyProperty(String.prototype.trimLeft, "name", {
+  value: "trimLeft",
+  enumerable: false,
+  writable: false,
+  configurable: true,
+});

test/annexB/built-ins/String/prototype/trimLeft/prop-desc.js

@@ -0,0 +1,22 @@
+// Copyright (C) 2017 The Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-string.prototype.trimLeft
+description: >
+  "trimLeft" property of String.prototype
+info: >
+  17 ECMAScript Standard Built-in Objects:
+
+  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]
+features: [string-trimming]
+---*/
+
+verifyProperty(String.prototype, "trimLeft", {
+  enumerable: false,
+  writable: true,
+  configurable: true,
+});

test/annexB/built-ins/String/prototype/trimLeft/reference-trimStart.js

@@ -0,0 +1,17 @@
+// Copyright (C) 2017 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-string.prototype.trimLeft
+description: >
+  String.prototype.trimLeft is a reference to String.prototype.trimStart.
+info: >
+  String.prototype.trimLeft ( )
+
+  The function object that is the initial value of String.prototype.trimLeft
+  is the same function object that is the initial value of
+  String.prototype.trimStart.
+features: [string-trimming]
+---*/
+
+assert.sameValue(String.prototype.trimLeft, String.prototype.trimStart);

test/annexB/built-ins/String/prototype/trimRight/length.js

@@ -0,0 +1,31 @@
+// Copyright (C) 2017 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-string.prototype.trimRight
+description: >
+  String.prototype.trimRight.length is 0.
+info: >
+  String.prototype.trimRight ( )
+
+  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]
+features: [string-trimming]
+---*/
+
+verifyProperty(String.prototype.trimRight, "length", {
+  value: 0,
+  enumerable: false,
+  writable: false,
+  configurable: true,
+});

test/annexB/built-ins/String/prototype/trimRight/name.js

@@ -0,0 +1,28 @@
+// Copyright (C) 2017 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-string.prototype.trimRight
+description: >
+  String.prototype.trimRight.name is "trimRight".
+info: >
+  String.prototype.trimRight ( )
+
+  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]
+features: [string-trimming]
+---*/
+
+verifyProperty(String.prototype.trimRight, "name", {
+  value: "trimRight",
+  enumerable: false,
+  writable: false,
+  configurable: true,
+});

test/annexB/built-ins/String/prototype/trimRight/prop-desc.js

@@ -0,0 +1,22 @@
+// Copyright (C) 2017 The Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-string.prototype.trimRight
+description: >
+  "trimRight" property of String.prototype
+info: >
+  17 ECMAScript Standard Built-in Objects:
+
+  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]
+features: [string-trimming]
+---*/
+
+verifyProperty(String.prototype, "trimRight", {
+  enumerable: false,
+  writable: true,
+  configurable: true,
+});

test/annexB/built-ins/String/prototype/trimRight/reference-trimEnd.js

@@ -0,0 +1,17 @@
+// Copyright (C) 2017 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-string.prototype.trimRight
+description: >
+  String.prototype.trimRight is a reference to String.prototype.trimEnd.
+info: >
+  String.prototype.trimRight ( )
+
+  The function object that is the initial value of String.prototype.trimRight
+  is the same function object that is the initial value of
+  String.prototype.trimEnd.
+features: [string-trimming]
+---*/
+
+assert.sameValue(String.prototype.trimRight, String.prototype.trimEnd);

test/built-ins/String/prototype/trimEnd/length.js

@@ -0,0 +1,31 @@
+// Copyright (C) 2017 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-string.prototype.trimEnd
+description: >
+  String.prototype.trimEnd.length is 0.
+info: >
+  String.prototype.trimEnd ( )
+
+  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]
+features: [string-trimming]
+---*/
+
+verifyProperty(String.prototype.trimEnd, "length", {
+  value: 0,
+  enumerable: false,
+  writable: false,
+  configurable: true,
+});

test/built-ins/String/prototype/trimEnd/name.js

@@ -0,0 +1,28 @@
+// Copyright (C) 2017 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-string.prototype.trimEnd
+description: >
+  String.prototype.trimEnd.name is "trimEnd".
+info: >
+  String.prototype.trimEnd ( )
+
+  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]
+features: [string-trimming]
+---*/
+
+verifyProperty(String.prototype.trimEnd, "name", {
+  value: "trimEnd",
+  enumerable: false,
+  writable: false,
+  configurable: true,
+});

test/built-ins/String/prototype/trimEnd/prop-desc.js

@@ -0,0 +1,22 @@
+// Copyright (C) 2017 The Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-string.prototype.trimEnd
+description: >
+  "trimEnd" property of String.prototype
+info: >
+  17 ECMAScript Standard Built-in Objects:
+
+  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]
+features: [string-trimming]
+---*/
+
+verifyProperty(String.prototype, "trimEnd", {
+  enumerable: false,
+  writable: true,
+  configurable: true,
+});

test/built-ins/String/prototype/trimEnd/this-value-boolean.js

@@ -0,0 +1,31 @@
+// Copyright (c) 2017 Valerie Young.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-string.prototype.trimEnd
+description: Behavior when "this" value is a boolean.
+info: |
+  TrimString
+  2. Let S be ? ToString(str).
+
+  ToString
+  Argument Type: Boolean
+  Result:
+    If argument is true, return "true".
+    If argument is false, return "false".
+features: [string-trimming]
+---*/
+
+var trimEnd = String.prototype.trimEnd
+
+assert.sameValue(
+  trimEnd.call(true),
+  'true',
+  'String.prototype.trimEnd.call(true)'
+);
+
+assert.sameValue(
+  String.prototype.trimEnd.call(false),
+  'false',
+  'String.prototype.trimEnd.call(false)'
+);

test/built-ins/String/prototype/trimEnd/this-value-line-terminator.js

@@ -0,0 +1,30 @@
+// Copyright (c) 2017 Valerie Young.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-string.prototype.trimEnd
+description: TrimEnd removes all line terminators from the end of a string.
+info: |
+  Runtime Symantics: TrimString ( string, where )
+  ...
+  4. Else if where is "end", let T be a String value that is a copy of S with
+     trailing white space removed.
+  ...
+
+  The definition of white space is the union of WhiteSpace and LineTerminator.
+
+features: [string-trimming]
+---*/
+
+var trimEnd = String.prototype.trimEnd;
+
+// A string of all valid LineTerminator Unicode code points
+var lt = '\u000A\u000D\u2028\u2029';
+
+var str = lt + 'a' + lt + 'b' + lt;
+var expected = lt + 'a' + lt + 'b';
+
+assert.sameValue(
+  trimEnd.call(str),
+  expected,
+);

test/built-ins/String/prototype/trimEnd/this-value-not-obj-coercible.js

@@ -0,0 +1,22 @@
+// Copyright (C) 2017 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-string.prototype.trimEnd
+description: The "this" value must be object-coercible
+info: |
+  1. Let O be ? RequireObjectCoercible(this value).
+features: [string-trimming]
+---*/
+
+var trimEnd = String.prototype.trimEnd;
+
+assert.sameValue(typeof trimEnd, 'function');
+
+assert.throws(TypeError, function() {
+  trimEnd.call(undefined);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  trimEnd.call(null);
+}, 'null');