JSTests/wasm/ref-spec-harness/async_index.js - WebKit - Git at Google

 /*
  * Copyright 2018 WebAssembly Community Group participants
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 "use strict";

 let testNum = (function() {
   let count = 1;
   return function() {
     return `#${count++} `;
   };
 })();

 function uniqueTest(func, desc) {
   test(func, testNum() + desc);
 }

 // WPT's assert_throw uses a list of predefined, hardcoded known errors. Since
 // it is not aware of the WebAssembly error types (yet), implement our own
 // version.
 function assertThrows(func, err) {
   let caught = false;
   try {
     func();
   } catch (e) {
     assert_true(
       e instanceof err,
       `expected ${err.name}, observed ${e.constructor.name}`
     );
     caught = true;
   }
   assert_true(caught, testNum() + "assertThrows must catch any error.");
 }

 /******************************************************************************
  ***************************** WAST HARNESS ************************************
  ******************************************************************************/

 const EXPECT_INVALID = false;

 /* DATA **********************************************************************/

 let externrefs = {};
 let externsym = Symbol("externref");
 function externref(s) {
   if (! (s in externrefs)) externrefs[s] = {[externsym]: s};
   return externrefs[s];
 }
 function is_externref(x) {
   return (x !== null && externsym in x) ? 1 : 0;
 }
 function is_funcref(x) {
   return typeof x === "function" ? 1 : 0;
 }
 function eq_externref(x, y) {
   return x === y ? 1 : 0;
 }
 function eq_funcref(x, y) {
   return x === y ? 1 : 0;
 }

 // Default imports.
 var registry = {};

 // All tests run asynchronously and return their results as promises. To ensure
 // that all tests execute in the correct order, we chain the promises together
 // so that a test is only executed when all previous tests have finished their
 // execution.
 let chain = Promise.resolve();

 // Resets the registry between two different WPT tests.
 function reinitializeRegistry() {
   if (typeof WebAssembly === "undefined") return;

   chain = chain.then(_ => {
     let spectest = {
       externref: externref,
       is_externref: is_externref,
       is_funcref: is_funcref,
       eq_externref: eq_externref,
       eq_funcref: eq_funcref,
       print: console.log.bind(console),
       print_i32: console.log.bind(console),
       print_i32_f32: console.log.bind(console),
       print_f64_f64: console.log.bind(console),
       print_f32: console.log.bind(console),
       print_f64: console.log.bind(console),
       global_i32: 666,
       global_f32: 666,
       global_f64: 666,
       table: new WebAssembly.Table({
         initial: 10,
         maximum: 20,
         element: "anyfunc"
       }),
       memory: new WebAssembly.Memory({ initial: 1, maximum: 2 })
     };
     let handler = {
       get(target, prop) {
         return prop in target ? target[prop] : {};
       }
     };
     registry = new Proxy({ spectest }, handler);
   });

   // This function is called at the end of every generated js test file. By
   // adding the chain as a promise_test here we make sure that the WPT harness
   // waits for all tests in the chain to finish.
   promise_test(_ => chain, testNum() + "Reinitialize the default imports");
 }

 reinitializeRegistry();

 /* WAST POLYFILL *************************************************************/

 function binary(bytes) {
   let buffer = new ArrayBuffer(bytes.length);
   let view = new Uint8Array(buffer);
   for (let i = 0; i < bytes.length; ++i) {
     view[i] = bytes.charCodeAt(i);
   }
   return buffer;
 }

 /**
  * Returns a compiled module, or throws if there was an error at compilation.
  */
 function module(bytes, valid = true) {
   const test = valid
     ? "Test that WebAssembly compilation succeeds"
     : "Test that WebAssembly compilation fails";
   const loc = new Error().stack.toString().replace("Error", "");
   let buffer = binary(bytes);
   let validated = WebAssembly.validate(buffer);

   uniqueTest(_ => {
     assert_equals(valid, validated);
   }, test);

   chain = chain.then(_ => WebAssembly.compile(buffer)).then(
     module => {
       uniqueTest(_ => {
         assert_true(valid, loc);
       }, test);
       return module;
     },
     error => {
       uniqueTest(_ => {
         assert_true(
           !valid,
           `WebAssembly.compile failed unexpectedly with ${error} at {loc}`
         );
       }, test);
     }
   );
   return chain;
 }

 function assert_invalid(bytes) {
   module(bytes, EXPECT_INVALID);
 }

 const assert_malformed = assert_invalid;

 function instance(bytes, imports, valid = true) {
   const test = valid
     ? "Test that WebAssembly instantiation succeeds"
     : "Test that WebAssembly instantiation fails";
   const loc = new Error().stack.toString().replace("Error", "");
   chain = Promise.all([imports, chain])
     .then(values => {
       let imports = values[0] ? values[0] : registry;
       return WebAssembly.instantiate(binary(bytes), imports);
     })
     .then(
       pair => {
         uniqueTest(_ => {
           assert_true(valid, loc);
         }, test);
         return pair.instance;
       },
       error => {
         uniqueTest(_ => {
           assert_true(
             !valid,
             `unexpected instantiation error, observed ${error} ${loc}`
           );
         }, test);
         return error;
       }
     );
   return chain;
 }

 function exports(instance) {
   return instance.then(inst => {
     return { module: inst.exports, spectest: registry.spectest };
   });
 }

 function call(instance, name, args) {
   return Promise.all([instance, chain]).then(values => {
     return values[0].exports[name](...args);
   });
 }

 function run(action) {
   const test = "Run a WebAssembly test without special assertions";
   const loc = new Error().stack.toString().replace("Error", "");
   chain = Promise.all([chain, action()])
     .then(
       _ => {
         uniqueTest(_ => {}, test);
       },
       error => {
         uniqueTest(_ => {
           assert_true(
             false,
             `unexpected runtime error, observed ${error} ${loc}`
           );
         }, "run");
       }
     )
     // Clear all exceptions, so that subsequent tests get executed.
     .catch(_ => {});
 }

 function assert_trap(action) {
   const test = "Test that a WebAssembly code traps";
   const loc = new Error().stack.toString().replace("Error", "");
   chain = Promise.all([chain, action()])
     .then(
       result => {
         uniqueTest(_ => {
           assert_true(false, loc);
         }, test);
       },
       error => {
         uniqueTest(_ => {
           assert_true(
             error instanceof WebAssembly.RuntimeError,
             `expected runtime error, observed ${error} ${loc}`
           );
         }, test);
       }
     )
     // Clear all exceptions, so that subsequent tests get executed.
     .catch(_ => {});
 }

 function assert_return(action, expected) {
   const test = "Test that a WebAssembly code returns a specific result";
   const loc = new Error().stack.toString().replace("Error", "");
   chain = Promise.all([action(), chain])
     .then(
       values => {
         uniqueTest(_ => {
           let actual = values[0];
           switch (expected) {
           case "nan:canonical":
           case "nan:arithmetic":
               // Note that JS can't reliably distinguish different NaN values,
               // so there's no good way to test that it's a canonical NaN.
               assert_true(Number.isNaN(actual), `expected NaN, observed ${actual}.`);
               return;
           case "ref.func":
               assert_true(typeof actual === "function", `expected Wasm function, got ${actual}`);
               return;
           case "ref.any":
               assert_true(actual !== null, `expected Wasm reference, got ${actual}`);
               return;
           default:
               assert_equals(actual, expected);
           }
         }, test);
       },
       error => {
         uniqueTest(_ => {
           assert_true(
             false,
             `unexpected runtime error, observed ${error} ${loc}`
           );
         }, test);
       }
     )
     // Clear all exceptions, so that subsequent tests get executed.
     .catch(_ => {});
 }

 let StackOverflow;
 try {
   (function f() {
     1 + f();
   })();
 } catch (e) {
   StackOverflow = e.constructor;
 }

 function assert_exhaustion(action) {
   const test = "Test that a WebAssembly code exhauts the stack space";
   const loc = new Error().stack.toString().replace("Error", "");
   chain = Promise.all([action(), chain])
     .then(
       _ => {
         uniqueTest(_ => {
           assert_true(false, loc);
         }, test);
       },
       error => {
         uniqueTest(_ => {
           assert_true(
             error instanceof StackOverflow,
             `expected runtime error, observed ${error} ${loc}`
           );
         }, test);
       }
     )
     // Clear all exceptions, so that subsequent tests get executed.
     .catch(_ => {});
 }

 function assert_unlinkable(bytes) {
   const test = "Test that a WebAssembly module is unlinkable";
   const loc = new Error().stack.toString().replace("Error", "");
   instance(bytes, registry, EXPECT_INVALID)
     .then(
       result => {
         uniqueTest(_ => {
           assert_true(
             result instanceof WebAssembly.LinkError,
             `expected link error, observed ${result} ${loc}`
           );
         }, test);
       },
       _ => {
         uniqueTest(_ => {
           assert_true(false, loc);
         }, test);
       }
     )
     // Clear all exceptions, so that subsequent tests get executed.
     .catch(_ => {});
 }

 function assert_uninstantiable(bytes) {
   const test = "Test that a WebAssembly module is uninstantiable";
   const loc = new Error().stack.toString().replace("Error", "");
   instance(bytes, registry, EXPECT_INVALID)
     .then(
       result => {
         uniqueTest(_ => {
           assert_true(
             result instanceof WebAssembly.RuntimeError,
             `expected link error, observed ${result} ${loc}`
           );
         }, test);
       },
       _ => {
         uniqueTest(_ => {
           assert_true(false, loc);
         }, test);
       }
     )
     // Clear all exceptions, so that subsequent tests get executed.
     .catch(_ => {});
 }

 function register(name, instance) {
   const test =
     "Test that the exports of a WebAssembly module can be registered";
   const loc = new Error().stack.toString().replace("Error", "");
   let stack = new Error();
   chain = Promise.all([instance, chain])
     .then(
       values => {
         registry[name] = values[0].exports;
       },
       _ => {
         uniqueTest(_ => {
           assert_true(false, loc);
         }, test);
       }
     )
     // Clear all exceptions, so that subsequent tests get executed.
     .catch(_ => {});
 }

 function get(instance, name) {
   const test = "Test that an export of a WebAssembly instance can be acquired";
   const loc = new Error().stack.toString().replace("Error", "");
   chain = Promise.all([instance, chain]).then(
     values => {
       let v = values[0].exports[name];
       return (v instanceof WebAssembly.Global) ? v.value : v;
     },
     _ => {
       uniqueTest(_ => {
         assert_true(false, loc);
       }, test);
     }
   );
   return chain;
 }
	/*
	* Copyright 2018 WebAssembly Community Group participants
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	"use strict";

	let testNum = (function() {
	let count = 1;
	return function() {
	return `#${count++} `;
	};
	})();

	function uniqueTest(func, desc) {
	test(func, testNum() + desc);
	}

	// WPT's assert_throw uses a list of predefined, hardcoded known errors. Since
	// it is not aware of the WebAssembly error types (yet), implement our own
	// version.
	function assertThrows(func, err) {
	let caught = false;
	try {
	func();
	} catch (e) {
	assert_true(
	e instanceof err,
	`expected ${err.name}, observed ${e.constructor.name}`
	);
	caught = true;
	}
	assert_true(caught, testNum() + "assertThrows must catch any error.");
	}

	/******************************************************************************
	*************************** WAST HARNESS **********************************
	******************************************************************************/

	const EXPECT_INVALID = false;

	/* DATA **********************************************************************/

	let externrefs = {};
	let externsym = Symbol("externref");
	function externref(s) {
	if (! (s in externrefs)) externrefs[s] = {[externsym]: s};
	return externrefs[s];
	}
	function is_externref(x) {
	return (x !== null && externsym in x) ? 1 : 0;
	}
	function is_funcref(x) {
	return typeof x === "function" ? 1 : 0;
	}
	function eq_externref(x, y) {
	return x === y ? 1 : 0;
	}
	function eq_funcref(x, y) {
	return x === y ? 1 : 0;
	}

	// Default imports.
	var registry = {};

	// All tests run asynchronously and return their results as promises. To ensure
	// that all tests execute in the correct order, we chain the promises together
	// so that a test is only executed when all previous tests have finished their
	// execution.
	let chain = Promise.resolve();

	// Resets the registry between two different WPT tests.
	function reinitializeRegistry() {
	if (typeof WebAssembly === "undefined") return;

	chain = chain.then(_ => {
	let spectest = {
	externref: externref,
	is_externref: is_externref,
	is_funcref: is_funcref,
	eq_externref: eq_externref,
	eq_funcref: eq_funcref,
	print: console.log.bind(console),
	print_i32: console.log.bind(console),
	print_i32_f32: console.log.bind(console),
	print_f64_f64: console.log.bind(console),
	print_f32: console.log.bind(console),
	print_f64: console.log.bind(console),
	global_i32: 666,
	global_f32: 666,
	global_f64: 666,
	table: new WebAssembly.Table({
	initial: 10,
	maximum: 20,
	element: "anyfunc"
	}),
	memory: new WebAssembly.Memory({ initial: 1, maximum: 2 })
	};
	let handler = {
	get(target, prop) {
	return prop in target ? target[prop] : {};
	}
	};
	registry = new Proxy({ spectest }, handler);
	});

	// This function is called at the end of every generated js test file. By
	// adding the chain as a promise_test here we make sure that the WPT harness
	// waits for all tests in the chain to finish.
	promise_test(_ => chain, testNum() + "Reinitialize the default imports");
	}

	reinitializeRegistry();

	/* WAST POLYFILL *************************************************************/

	function binary(bytes) {
	let buffer = new ArrayBuffer(bytes.length);
	let view = new Uint8Array(buffer);
	for (let i = 0; i < bytes.length; ++i) {
	view[i] = bytes.charCodeAt(i);
	}
	return buffer;
	}

	/**
	* Returns a compiled module, or throws if there was an error at compilation.
	*/
	function module(bytes, valid = true) {
	const test = valid
	? "Test that WebAssembly compilation succeeds"
	: "Test that WebAssembly compilation fails";
	const loc = new Error().stack.toString().replace("Error", "");
	let buffer = binary(bytes);
	let validated = WebAssembly.validate(buffer);

	uniqueTest(_ => {
	assert_equals(valid, validated);
	}, test);

	chain = chain.then(_ => WebAssembly.compile(buffer)).then(
	module => {
	uniqueTest(_ => {
	assert_true(valid, loc);
	}, test);
	return module;
	},
	error => {
	uniqueTest(_ => {
	assert_true(
	!valid,
	`WebAssembly.compile failed unexpectedly with ${error} at {loc}`
	);
	}, test);
	}
	);
	return chain;
	}

	function assert_invalid(bytes) {
	module(bytes, EXPECT_INVALID);
	}

	const assert_malformed = assert_invalid;

	function instance(bytes, imports, valid = true) {
	const test = valid
	? "Test that WebAssembly instantiation succeeds"
	: "Test that WebAssembly instantiation fails";
	const loc = new Error().stack.toString().replace("Error", "");
	chain = Promise.all([imports, chain])
	.then(values => {
	let imports = values[0] ? values[0] : registry;
	return WebAssembly.instantiate(binary(bytes), imports);
	})
	.then(
	pair => {
	uniqueTest(_ => {
	assert_true(valid, loc);
	}, test);
	return pair.instance;
	},
	error => {
	uniqueTest(_ => {
	assert_true(
	!valid,
	`unexpected instantiation error, observed ${error} ${loc}`
	);
	}, test);
	return error;
	}
	);
	return chain;
	}

	function exports(instance) {
	return instance.then(inst => {
	return { module: inst.exports, spectest: registry.spectest };
	});
	}

	function call(instance, name, args) {
	return Promise.all([instance, chain]).then(values => {
	return values[0].exports[name](...args);
	});
	}

	function run(action) {
	const test = "Run a WebAssembly test without special assertions";
	const loc = new Error().stack.toString().replace("Error", "");
	chain = Promise.all([chain, action()])
	.then(
	_ => {
	uniqueTest(_ => {}, test);
	},
	error => {
	uniqueTest(_ => {
	assert_true(
	false,
	`unexpected runtime error, observed ${error} ${loc}`
	);
	}, "run");
	}
	)
	// Clear all exceptions, so that subsequent tests get executed.
	.catch(_ => {});
	}

	function assert_trap(action) {
	const test = "Test that a WebAssembly code traps";
	const loc = new Error().stack.toString().replace("Error", "");
	chain = Promise.all([chain, action()])
	.then(
	result => {
	uniqueTest(_ => {
	assert_true(false, loc);
	}, test);
	},
	error => {
	uniqueTest(_ => {
	assert_true(
	error instanceof WebAssembly.RuntimeError,
	`expected runtime error, observed ${error} ${loc}`
	);
	}, test);
	}
	)
	// Clear all exceptions, so that subsequent tests get executed.
	.catch(_ => {});
	}

	function assert_return(action, expected) {
	const test = "Test that a WebAssembly code returns a specific result";
	const loc = new Error().stack.toString().replace("Error", "");
	chain = Promise.all([action(), chain])
	.then(
	values => {
	uniqueTest(_ => {
	let actual = values[0];
	switch (expected) {
	case "nan:canonical":
	case "nan:arithmetic":
	// Note that JS can't reliably distinguish different NaN values,
	// so there's no good way to test that it's a canonical NaN.
	assert_true(Number.isNaN(actual), `expected NaN, observed ${actual}.`);
	return;
	case "ref.func":
	assert_true(typeof actual === "function", `expected Wasm function, got ${actual}`);
	return;
	case "ref.any":
	assert_true(actual !== null, `expected Wasm reference, got ${actual}`);
	return;
	default:
	assert_equals(actual, expected);
	}
	}, test);
	},
	error => {
	uniqueTest(_ => {
	assert_true(
	false,
	`unexpected runtime error, observed ${error} ${loc}`
	);
	}, test);
	}
	)
	// Clear all exceptions, so that subsequent tests get executed.
	.catch(_ => {});
	}

	let StackOverflow;
	try {
	(function f() {
	1 + f();
	})();
	} catch (e) {
	StackOverflow = e.constructor;
	}

	function assert_exhaustion(action) {
	const test = "Test that a WebAssembly code exhauts the stack space";
	const loc = new Error().stack.toString().replace("Error", "");
	chain = Promise.all([action(), chain])
	.then(
	_ => {
	uniqueTest(_ => {
	assert_true(false, loc);
	}, test);
	},
	error => {
	uniqueTest(_ => {
	assert_true(
	error instanceof StackOverflow,
	`expected runtime error, observed ${error} ${loc}`
	);
	}, test);
	}
	)
	// Clear all exceptions, so that subsequent tests get executed.
	.catch(_ => {});
	}

	function assert_unlinkable(bytes) {
	const test = "Test that a WebAssembly module is unlinkable";
	const loc = new Error().stack.toString().replace("Error", "");
	instance(bytes, registry, EXPECT_INVALID)
	.then(
	result => {
	uniqueTest(_ => {
	assert_true(
	result instanceof WebAssembly.LinkError,
	`expected link error, observed ${result} ${loc}`
	);
	}, test);
	},
	_ => {
	uniqueTest(_ => {
	assert_true(false, loc);
	}, test);
	}
	)
	// Clear all exceptions, so that subsequent tests get executed.
	.catch(_ => {});
	}

	function assert_uninstantiable(bytes) {
	const test = "Test that a WebAssembly module is uninstantiable";
	const loc = new Error().stack.toString().replace("Error", "");
	instance(bytes, registry, EXPECT_INVALID)
	.then(
	result => {
	uniqueTest(_ => {
	assert_true(
	result instanceof WebAssembly.RuntimeError,
	`expected link error, observed ${result} ${loc}`
	);
	}, test);
	},
	_ => {
	uniqueTest(_ => {
	assert_true(false, loc);
	}, test);
	}
	)
	// Clear all exceptions, so that subsequent tests get executed.
	.catch(_ => {});
	}

	function register(name, instance) {
	const test =
	"Test that the exports of a WebAssembly module can be registered";
	const loc = new Error().stack.toString().replace("Error", "");
	let stack = new Error();
	chain = Promise.all([instance, chain])
	.then(
	values => {
	registry[name] = values[0].exports;
	},
	_ => {
	uniqueTest(_ => {
	assert_true(false, loc);
	}, test);
	}
	)
	// Clear all exceptions, so that subsequent tests get executed.
	.catch(_ => {});
	}

	function get(instance, name) {
	const test = "Test that an export of a WebAssembly instance can be acquired";
	const loc = new Error().stack.toString().replace("Error", "");
	chain = Promise.all([instance, chain]).then(
	values => {
	let v = values[0].exports[name];
	return (v instanceof WebAssembly.Global) ? v.value : v;
	},
	_ => {
	uniqueTest(_ => {
	assert_true(false, loc);
	}, test);
	}
	);
	return chain;
	}