Example: rewrite import attributes tests

test/language/import/import-attributes/json-extensibility-array.multi.md

@@ -0,0 +1,31 @@
+Copyright (C) 2021 the V8 project authors. All rights reserved.
+This code is governed by the BSD license found in the LICENSE file.
+
+## main.js
+
+```js
+/*---
+esid: sec-parse-json-module
+description: Creates extensible arrays
+flags: [module]
+includes: [propertyHelper.js]
+features: [import-attributes, json-modules]
+---*/
+
+import value from './json-value-array_FIXTURE.json' with { type: 'json' };
+
+value.test262property = 'test262 value';
+
+verifyProperty(value, 'test262property', {
+  value: 'test262 value',
+  writable: true,
+  enumerable: true,
+  configurable: true
+});
+```
+
+## json-value-array_FIXTURE.json
+
+```json
+[]
+```

test/language/import/import-attributes/json-extensibility-array__generated/json-value-array_FIXTURE.json

@@ -0,0 +1 @@
+[]

test/language/import/import-attributes/json-extensibility-array.js → test/language/import/import-attributes/json-extensibility-array__generated/main.js

@@ -1,5 +1,9 @@
+// THIS FILE IS AUTOGENERATED. DO NOT EDIT DIRECTLY.
+// TO MAKE CHANGES, EDIT ../json-extensibility-array.multi.md
+
 // Copyright (C) 2021 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
+
 /*---
 esid: sec-parse-json-module
 description: Creates extensible arrays

test/language/import/import-attributes/json-extensibility-object.multi.md

@@ -0,0 +1,31 @@
+Copyright (C) 2021 the V8 project authors. All rights reserved.
+This code is governed by the BSD license found in the LICENSE file.
+
+## main.js
+
+```js
+/*---
+esid: sec-parse-json-module
+description: Creates extensible objects
+flags: [module]
+includes: [propertyHelper.js]
+features: [import-attributes, json-modules]
+---*/
+
+import value from './json-value-object_FIXTURE.json' with { type: 'json' };
+
+value.test262property = 'test262 value';
+
+verifyProperty(value, 'test262property', {
+  value: 'test262 value',
+  writable: true,
+  enumerable: true,
+  configurable: true
+});
+```
+
+## json-value-object_FIXTURE.json
+
+```json
+{}
+```

test/language/import/import-attributes/json-extensibility-object.js → test/language/import/import-attributes/json-extensibility-object__generated/main.js

@@ -1,5 +1,9 @@
+// THIS FILE IS AUTOGENERATED. DO NOT EDIT DIRECTLY.
+// TO MAKE CHANGES, EDIT ../json-extensibility-object.multi.md
+
 // Copyright (C) 2021 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
+
 /*---
 esid: sec-parse-json-module
 description: Creates extensible objects

test/language/import/import-attributes/json-idempotency.multi.md

@@ -0,0 +1,40 @@
+Copyright (C) 2021 the V8 project authors. All rights reserved.
+This code is governed by the BSD license found in the LICENSE file.
+
+## main.js
+
+```js
+/*---
+esid: sec-parse-json-module
+description: The same object representation is returned to all import sites
+flags: [module, async]
+features: [import-attributes, json-modules, globalThis, dynamic-import]
+---*/
+
+import viaStaticImport1 from './json-idempotency_FIXTURE.json' with { type: 'json' };
+import {default as viaStaticImport2} from './json-idempotency_FIXTURE.json' with { type: 'json' };
+import './json-idempotency-indirect_FIXTURE.js';
+
+assert.sameValue(viaStaticImport1, viaStaticImport2);
+assert.sameValue(globalThis.viaSecondModule, viaStaticImport1);
+
+import('./json-idempotency_FIXTURE.json', { with: { type: 'json' } })
+  .then(function(viaDynamicImport) {
+    assert.sameValue(viaDynamicImport.default, viaStaticImport1);
+  })
+  .then($DONE, $DONE);
+```
+
+## json-idempotency_FIXTURE.json
+
+```json
+{}
+```
+
+## json-idempotency-indirect_FIXTURE.js
+
+```js
+import value from './json-idempotency_FIXTURE.json' with { type: 'json' };
+
+globalThis.viaSecondModule = value;
+```

test/language/import/import-attributes/json-idempotency-indirect_FIXTURE.js → test/language/import/import-attributes/json-idempotency__generated/json-idempotency-indirect_FIXTURE.js

@@ -1,3 +1,6 @@
+// THIS FILE IS AUTOGENERATED. DO NOT EDIT DIRECTLY.
+// TO MAKE CHANGES, EDIT ../json-idempotency.multi.md
+
 // Copyright (C) 2021 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 

test/language/import/import-attributes/json-idempotency__generated/json-idempotency_FIXTURE.json

@@ -0,0 +1 @@
+{}

test/language/import/import-attributes/json-idempotency.js → test/language/import/import-attributes/json-idempotency__generated/main.js

@@ -1,5 +1,9 @@
+// THIS FILE IS AUTOGENERATED. DO NOT EDIT DIRECTLY.
+// TO MAKE CHANGES, EDIT ../json-idempotency.multi.md
+
 // Copyright (C) 2021 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
+
 /*---
 esid: sec-parse-json-module
 description: The same object representation is returned to all import sites

test/language/import/import-attributes/json-invalid.multi.md

@@ -0,0 +1,36 @@
+Copyright (C) 2021 the V8 project authors. All rights reserved.
+This code is governed by the BSD license found in the LICENSE file.
+
+## main.js
+
+```js
+/*---
+esid: sec-parse-json-module
+description: Does not define
+info: |
+  # 1.4 ParseJSONModule ( source )
+
+  The abstract operation ParseJSONModule takes a single argument source which
+  is a String representing the contents of a module.
+
+  1. Let json be ? Call(%JSON.parse%, undefined, « source »).
+  2. Return CreateDefaultExportSyntheticModule(json).
+flags: [module]
+features: [import-attributes, json-modules]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+import value from './json-invalid_FIXTURE.json' with { type: 'json' };
+```
+
+## json-invalid_FIXTURE.json
+
+```json
+{
+  notJson: 0
+}
+```

test/language/import/import-attributes/json-invalid.js → test/language/import/import-attributes/json-invalid__generated/main.js

@@ -1,5 +1,9 @@
+// THIS FILE IS AUTOGENERATED. DO NOT EDIT DIRECTLY.
+// TO MAKE CHANGES, EDIT ../json-invalid.multi.md
+
 // Copyright (C) 2021 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
+
 /*---
 esid: sec-parse-json-module
 description: Does not define

test/language/import/import-attributes/json-named-bindings.multi.md

@@ -0,0 +1,33 @@
+Copyright (C) 2021 the V8 project authors. All rights reserved.
+This code is governed by the BSD license found in the LICENSE file.
+
+## main.js
+
+```js
+/*---
+esid: sec-parse-json-module
+description: Does not define named bindings
+info: |
+  In the early design of JSON modules, contributors considered allowing the
+  properties of object values in JSON modules to be imported directly by name.
+  This was ultimately rejected, so attempting to import in this way should
+  produce a SyntaxError.
+flags: [module]
+features: [import-attributes, json-modules]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+import {name} from './json-named-bindings_FIXTURE.json' with { type: 'json' };
+```
+
+## json-named-bindings_FIXTURE.json
+
+```json
+{
+	"name": 0
+}
+```

test/language/import/import-attributes/json-named-bindings__generated/json-named-bindings_FIXTURE.json

@@ -0,0 +1,3 @@
+{
+	"name": 0
+}

test/language/import/import-attributes/json-named-bindings.js → test/language/import/import-attributes/json-named-bindings__generated/main.js

@@ -1,5 +1,9 @@
+// THIS FILE IS AUTOGENERATED. DO NOT EDIT DIRECTLY.
+// TO MAKE CHANGES, EDIT ../json-named-bindings.multi.md
+
 // Copyright (C) 2021 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
+
 /*---
 esid: sec-parse-json-module
 description: Does not define named bindings

test/language/import/import-attributes/json-value-array.multi.md

@@ -0,0 +1,65 @@
+Copyright (C) 2021 the V8 project authors. All rights reserved.
+This code is governed by the BSD license found in the LICENSE file.
+
+## main.js
+
+```js
+/*---
+esid: sec-parse-json-module
+description: Correctly parses the JSON representation of an array
+info: |
+  # 1.4 ParseJSONModule ( source )
+
+  The abstract operation ParseJSONModule takes a single argument source which
+  is a String representing the contents of a module.
+
+  1. Let json be ? Call(%JSON.parse%, undefined, « source »).
+  2. Return CreateDefaultExportSyntheticModule(json).
+
+  To more fully verify parsing correctness, the source text of the imported
+  module record includes non-printable characters (specifically, all four forms
+  of JSON's so-called "whitespace" token) both before and after the "value."
+flags: [module]
+features: [import-attributes, json-modules]
+---*/
+
+import value from './json-value-array_FIXTURE.json' with { type: 'json' };
+
+assert(Array.isArray(value), 'the exported value is an array');
+assert.sameValue(
+  Object.getPrototypeOf(value),
+  Array.prototype,
+  'the exported value is not a subclass of Array'
+);
+assert.sameValue(Object.getOwnPropertyNames(value).length, 7);
+assert.sameValue(value.length, 6);
+
+assert.sameValue(value[0], -1.2345);
+assert.sameValue(value[1], true);
+assert.sameValue(value[2], 'a string value');
+assert.sameValue(value[3], null);
+
+assert.sameValue(Object.getPrototypeOf(value[4]), Object.prototype);
+assert.sameValue(Object.getOwnPropertyNames(value[4]).length, 0);
+
+assert(Array.isArray(value[5]), 'the fifth element is an array');
+assert.sameValue(
+  Object.getPrototypeOf(value[5]),
+  Array.prototype,
+  'the fifth element is not a subclass of Array'
+);
+assert.sameValue(Object.getOwnPropertyNames(value[5]).length, 1);
+```
+
+## json-value-array_FIXTURE.json
+
+```json
+[
+  -1234.500e-003,
+  true,
+  "a string value",
+  null,
+  {},
+  []
+]
+```

test/language/import/import-attributes/json-value-array_FIXTURE.json → test/language/import/import-attributes/json-value-array__generated/json-value-array_FIXTURE.json

@@ -1,10 +1,8 @@
-
-	[
+[
   -1234.500e-003,
   true,
   "a string value",
   null,
   {},
   []
-] 
-	
+]

test/language/import/import-attributes/json-value-array.js → test/language/import/import-attributes/json-value-array__generated/main.js

@@ -1,5 +1,9 @@
+// THIS FILE IS AUTOGENERATED. DO NOT EDIT DIRECTLY.
+// TO MAKE CHANGES, EDIT ../json-value-array.multi.md
+
 // Copyright (C) 2021 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
+
 /*---
 esid: sec-parse-json-module
 description: Correctly parses the JSON representation of an array

test/language/import/import-attributes/json-value-boolean.multi.md

@@ -0,0 +1,31 @@
+Copyright (C) 2021 the V8 project authors. All rights reserved.
+This code is governed by the BSD license found in the LICENSE file.
+
+## main.js
+
+```js
+/*---
+esid: sec-parse-json-module
+description: Correctly parses the JSON representation of a boolean
+info: |
+  # 1.4 ParseJSONModule ( source )
+
+  The abstract operation ParseJSONModule takes a single argument source which
+  is a String representing the contents of a module.
+
+  1. Let json be ? Call(%JSON.parse%, undefined, « source »).
+  2. Return CreateDefaultExportSyntheticModule(json).
+flags: [module]
+features: [import-attributes, json-modules]
+---*/
+
+import value from './json-value-boolean_FIXTURE.json' with { type: 'json' };
+
+assert.sameValue(value, true);
+```
+
+## json-value-boolean_FIXTURE.json
+
+```json
+true
+```

test/language/import/import-attributes/json-value-boolean.js → test/language/import/import-attributes/json-value-boolean__generated/main.js

@@ -1,5 +1,9 @@
+// THIS FILE IS AUTOGENERATED. DO NOT EDIT DIRECTLY.
+// TO MAKE CHANGES, EDIT ../json-value-boolean.multi.md
+
 // Copyright (C) 2021 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
+
 /*---
 esid: sec-parse-json-module
 description: Correctly parses the JSON representation of a boolean