Align detached buffer semantics with web reality, R4. Fixes gh-2879

test/built-ins/TypedArray/prototype/every/BigInt/callbackfn-detachbuffer.js

@@ -29,16 +29,13 @@ testWithBigIntTypedArrayConstructors(function(TA) {
   var loops = 0;
   var sample = new TA(2);
 
-  assert.throws(TypeError, function() {
+  sample.every(function() {
-    sample.every(function() {
+    if (loops === 0) {
-      if (loops === 1) {
-        throw new Test262Error("callbackfn called twice");
-      }
       $DETACHBUFFER(sample.buffer);
-      loops++;
+    }
-      return true;
+    loops++;
-    });
+    return true;
   });
 
-  assert.sameValue(loops, 1);
+  assert.sameValue(loops, 2);
 });

test/built-ins/TypedArray/prototype/filter/BigInt/callbackfn-detachbuffer.js

@@ -21,15 +21,13 @@ testWithBigIntTypedArrayConstructors(function(TA) {
   var loops = 0;
   var sample = new TA(2);
 
-  assert.throws(TypeError, function() {
+  sample.filter(function() {
-    sample.filter(function() {
+    if (loops === 0) {
-      if (loops === 1) {
-        throw new Test262Error("callbackfn called twice");
-      }
       $DETACHBUFFER(sample.buffer);
-      loops++;
+    }
-    });
+    loops++;
+    return true;
   });
 
-  assert.sameValue(loops, 1);
+  assert.sameValue(loops, 2);
 });

test/built-ins/TypedArray/prototype/find/BigInt/predicate-may-detach-buffer.js

@@ -5,7 +5,7 @@ esid: sec-%typedarray%.prototype.find
 description: >
   Predicate may detach the buffer
 info: |
-  22.2.3.10 %TypedArray%.prototype.find (predicate [ , thisArg ] )
+  %TypedArray%.prototype.find (predicate [ , thisArg ] )
 
   %TypedArray%.prototype.find is a distinct function that implements the same
   algorithm as Array.prototype.find as defined in 22.1.3.8
@@ -17,42 +17,41 @@ info: |
   possibility that calls to predicate may cause the this value to become
   detached.
 
-  ...
 
-  22.1.3.8 Array.prototype.find ( predicate[ , thisArg ] )
+  Array.prototype.find ( predicate[ , thisArg ] )
+
+    Let O be ? ToObject(this value).
+    Let len be ? LengthOfArrayLike(O).
+    If IsCallable(predicate) is false, throw a TypeError exception.
+    Let k be 0.
+    Repeat, while k < len,
+      Let Pk be ! ToString(𝔽(k)).
+      Let kValue be ? Get(O, Pk).
+      Let testResult be ! ToBoolean(? Call(predicate, thisArg, « kValue, 𝔽(k), O »)).
+      If testResult is true, return kValue.
+      Set k to k + 1.
+    Return undefined.
+
+  IntegerIndexedElementGet ( O, index )
 
-  ...
-  4. If thisArg was supplied, let T be thisArg; else let T be undefined.
-  5. Let k be 0.
-  6. Repeat, while k < len
     ...
-    b. Let kValue be ? Get(O, Pk).
+    Let buffer be the value of O's [[ViewedArrayBuffer]] internal slot.
-    c. Let testResult be ToBoolean(? Call(predicate, T, « kValue, k, O »)).
+    If IsDetachedBuffer(buffer) is true, return undefined.
-  ...
 
-  9.4.5.8 IntegerIndexedElementGet ( O, index )
-
-  ...
-  3. Let buffer be the value of O's [[ViewedArrayBuffer]] internal slot.
-  4. If IsDetachedBuffer(buffer) is true, throw a TypeError exception.
-  ...
 includes: [testBigIntTypedArray.js, detachArrayBuffer.js]
 features: [BigInt, TypedArray]
 ---*/
 
 testWithBigIntTypedArrayConstructors(function(TA) {
-  var sample = new TA(2);
   var loops = 0;
-  var completion = false;
+  var sample = new TA(2);
 
-  assert.throws(TypeError, function() {
+  sample.find(function() {
-    sample.find(function() {
+    if (loops === 0) {
-      loops++;
       $DETACHBUFFER(sample.buffer);
-      completion = true;
+    }
-    });
+    loops++;
-  }, "throws a TypeError getting a value from the detached buffer");
+  });
 
-  assert.sameValue(loops, 1, "predicate is called once");
+  assert.sameValue(loops, 2);
-  assert(completion, "abrupt completion does not come from DETACHBUFFER");
 });

test/built-ins/TypedArray/prototype/forEach/BigInt/callbackfn-detachbuffer.js

@@ -29,15 +29,12 @@ testWithBigIntTypedArrayConstructors(function(TA) {
   var loops = 0;
   var sample = new TA(2);
 
-  assert.throws(TypeError, function() {
+  sample.forEach(function() {
-    sample.forEach(function() {
+    if (loops === 0) {
-      if (loops === 1) {
-        throw new Test262Error("callbackfn called twice");
-      }
       $DETACHBUFFER(sample.buffer);
-      loops++;
+    }
-    });
+    loops++;
   });
 
-  assert.sameValue(loops, 1);
+  assert.sameValue(loops, 2);
 });

test/built-ins/TypedArray/prototype/map/BigInt/callbackfn-detachbuffer.js

@@ -21,16 +21,13 @@ testWithBigIntTypedArrayConstructors(function(TA) {
   var loops = 0;
   var sample = new TA(2);
 
-  assert.throws(TypeError, function() {
+  sample.map(function() {
-    sample.map(function() {
+    if (loops === 0) {
-      if (loops === 1) {
-        throw new Test262Error("callbackfn called twice");
-      }
       $DETACHBUFFER(sample.buffer);
-      loops++;
+    }
-      return 0n;
+    loops++;
-    });
+    return true;
   });
 
-  assert.sameValue(loops, 1, "callbackfn called only once");
+  assert.sameValue(loops, 2);
 });

test/built-ins/TypedArray/prototype/reduce/BigInt/callbackfn-detachbuffer.js

@@ -30,15 +30,13 @@ testWithBigIntTypedArrayConstructors(function(TA) {
   var loops = 0;
   var sample = new TA(2);
 
-  assert.throws(TypeError, function() {
+  sample.reduce(function() {
-    sample.reduce(function() {
+    if (loops === 0) {
-      if (loops === 1) {
-        throw new Test262Error("callbackfn called twice");
-      }
       $DETACHBUFFER(sample.buffer);
-      loops++;
+    }
-    }, 0);
+    loops++;
-  });
+    return true;
+  }, 0);
 
-  assert.sameValue(loops, 1, "callbackfn called only once");
+  assert.sameValue(loops, 2);
 });

test/built-ins/TypedArray/prototype/reduceRight/BigInt/callbackfn-detachbuffer.js

@@ -30,15 +30,13 @@ testWithBigIntTypedArrayConstructors(function(TA) {
   var loops = 0;
   var sample = new TA(2);
 
-  assert.throws(TypeError, function() {
+  sample.reduceRight(function() {
-    sample.reduceRight(function() {
+    if (loops === 0) {
-      if (loops === 1) {
-        throw new Test262Error("callbackfn called twice");
-      }
       $DETACHBUFFER(sample.buffer);
-      loops++;
+    }
-    }, 0);
+    loops++;
-  });
+    return true;
+  }, 0);
 
-  assert.sameValue(loops, 1, "callbackfn called only once");
+  assert.sameValue(loops, 2);
 });

test/built-ins/TypedArray/prototype/some/BigInt/callbackfn-detachbuffer.js

@@ -29,15 +29,13 @@ testWithBigIntTypedArrayConstructors(function(TA) {
   var loops = 0;
   var sample = new TA(2);
 
-  assert.throws(TypeError, function() {
+  sample.some(function() {
-    sample.some(function() {
+    if (loops === 0) {
-      if (loops === 1) {
-        throw new Test262Error("callbackfn called twice");
-      }
       $DETACHBUFFER(sample.buffer);
-      loops++;
+    }
-    });
+    loops++;
+    return false;
   });
 
-  assert.sameValue(loops, 1);
+  assert.sameValue(loops, 2);
 });

test/built-ins/TypedArrayConstructors/internals/GetOwnProperty/index-prop-desc.js

@@ -13,7 +13,7 @@ info: |
     b. If numericIndex is not undefined, then
       ...
       iii. Return a PropertyDescriptor{[[Value]]: value, [[Writable]]: true,
-      [[Enumerable]]: true, [[Configurable]]: false}.
+      [[Enumerable]]: true, [[Configurable]]: true}.
   ...
 includes: [testTypedArray.js, propertyHelper.js]
 features: [align-detached-buffer-semantics-with-web-reality, TypedArray]

test/built-ins/TypedArrayConstructors/internals/Set/BigInt/detached-buffer.js

@@ -3,7 +3,7 @@
 /*---
 esid: sec-integer-indexed-exotic-objects-set-p-v-receiver
 description: >
-  Returns true when setting the value of any CanonicalNumericIndexString if buffer is detached.
+  Returns false when setting the value of any CanonicalNumericIndexString if buffer is detached.
 info: |
   [[Set]] ( P, V, Receiver)