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|
// Copyright 2008 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
function MjsUnitAssertionError(message) {
this.message = message;
// Temporarily install a custom stack trace formatter and restore the
// previous value.
let prevPrepareStackTrace = Error.prepareStackTrace;
try {
Error.prepareStackTrace = MjsUnitAssertionError.prepareStackTrace;
// This allows fetching the stack trace using TryCatch::StackTrace.
this.stack = new Error("MjsUnitAssertionError").stack;
} finally {
Error.prepareStackTrace = prevPrepareStackTrace;
}
}
/*
* This file is included in all mini jsunit test cases. The test
* framework expects lines that signal failed tests to start with
* the f-word and ignore all other lines.
*/
MjsUnitAssertionError.prototype.toString = function () {
return this.message + "\n\nStack: " + this.stack;
};
// Expected and found values the same objects, or the same primitive
// values.
// For known primitive values, please use assertEquals.
var assertSame;
// Inverse of assertSame.
var assertNotSame;
// Expected and found values are identical primitive values or functions
// or similarly structured objects (checking internal properties
// of, e.g., Number and Date objects, the elements of arrays
// and the properties of non-Array objects).
var assertEquals;
// Deep equality predicate used by assertEquals.
var deepEquals;
// Expected and found values are not identical primitive values or functions
// or similarly structured objects (checking internal properties
// of, e.g., Number and Date objects, the elements of arrays
// and the properties of non-Array objects).
var assertNotEquals;
// The difference between expected and found value is within certain tolerance.
var assertEqualsDelta;
// The found object is an Array with the same length and elements
// as the expected object. The expected object doesn't need to be an Array,
// as long as it's "array-ish".
var assertArrayEquals;
// The found object must have the same enumerable properties as the
// expected object. The type of object isn't checked.
var assertPropertiesEqual;
// Assert that the string conversion of the found value is equal to
// the expected string. Only kept for backwards compatibility, please
// check the real structure of the found value.
var assertToStringEquals;
// Checks that the found value is true. Use with boolean expressions
// for tests that doesn't have their own assertXXX function.
var assertTrue;
// Checks that the found value is false.
var assertFalse;
// Checks that the found value is null. Kept for historical compatibility,
// please just use assertEquals(null, expected).
var assertNull;
// Checks that the found value is *not* null.
var assertNotNull;
// Assert that the passed function or eval code throws an exception.
// The optional second argument is an exception constructor that the
// thrown exception is checked against with "instanceof".
// The optional third argument is a message type string or RegExp object that is
// compared to the message of the thrown exception.
var assertThrows;
// Assert that the passed function throws an exception.
// The exception is checked against the second argument using assertEquals.
var assertThrowsEquals;
// Assert that the passed promise does not resolve, but eventually throws an
// exception. The optional second argument is an exception constructor that the
// thrown exception is checked against with "instanceof".
// The optional third argument is a message type string or RegExp object that is
// compared to the message of the thrown exception.
var assertThrowsAsync;
// Assert that the passed function or eval code does not throw an exception.
var assertDoesNotThrow;
// Asserts that the found value is an instance of the constructor passed
// as the second argument.
var assertInstanceof;
// Assert that this code is never executed (i.e., always fails if executed).
var assertUnreachable;
// Assert that the function code is (not) optimized. If "no sync" is passed
// as second argument, we do not wait for the concurrent optimization thread to
// finish when polling for optimization status.
// Only works with --allow-natives-syntax.
var assertOptimized;
var assertUnoptimized;
// Assert that a string contains another expected substring.
var assertContains;
// Assert that a string matches a given regex.
var assertMatches;
// Assert that a promise resolves or rejects.
// Parameters:
// {promise} - the promise
// {success} - optional - a callback which is called with the result of the
// resolving promise.
// {fail} - optional - a callback which is called with the result of the
// rejecting promise. If the promise is rejected but no {fail}
// callback is set, the error is propagated out of the promise
// chain.
var assertPromiseResult;
var promiseTestChain;
var promiseTestCount = 0;
// These bits must be in sync with bits defined in Runtime_GetOptimizationStatus
var V8OptimizationStatus = {
kIsFunction: 1 << 0,
kNeverOptimize: 1 << 1,
kAlwaysOptimize: 1 << 2,
kMaybeDeopted: 1 << 3,
kOptimized: 1 << 4,
kTurboFanned: 1 << 5,
kInterpreted: 1 << 6,
kMarkedForOptimization: 1 << 7,
kMarkedForConcurrentOptimization: 1 << 8,
kOptimizingConcurrently: 1 << 9,
kIsExecuting: 1 << 10,
kTopmostFrameIsTurboFanned: 1 << 11,
kLiteMode: 1 << 12,
kMarkedForDeoptimization: 1 << 13,
kBaseline: 1 << 14,
};
// Returns true if --lite-mode is on and we can't ever turn on optimization.
var isNeverOptimizeLiteMode;
// Returns true if --no-opt mode is on.
var isNeverOptimize;
// Returns true if --always-opt mode is on.
var isAlwaysOptimize;
// Returns true if given function in interpreted.
var isInterpreted;
// Returns true if given function in baseline.
var isBaseline;
// Returns true if given function in unoptimized (interpreted or baseline).
var isUnoptimized;
// Returns true if given function is optimized.
var isOptimized;
// Returns true if given function is compiled by TurboFan.
var isTurboFanned;
// Monkey-patchable all-purpose failure handler.
var failWithMessage;
// Returns the formatted failure text. Used by test-async.js.
var formatFailureText;
// Returns a pretty-printed string representation of the passed value.
var prettyPrinted;
(function () { // Scope for utility functions.
var ObjectPrototypeToString = Object.prototype.toString;
var NumberPrototypeValueOf = Number.prototype.valueOf;
var BooleanPrototypeValueOf = Boolean.prototype.valueOf;
var StringPrototypeValueOf = String.prototype.valueOf;
var DatePrototypeValueOf = Date.prototype.valueOf;
var RegExpPrototypeToString = RegExp.prototype.toString;
var ArrayPrototypeForEach = Array.prototype.forEach;
var ArrayPrototypeJoin = Array.prototype.join;
var ArrayPrototypeMap = Array.prototype.map;
var ArrayPrototypePush = Array.prototype.push;
var JSONStringify = JSON.stringify;
var BigIntPrototypeValueOf;
// TODO(neis): Remove try-catch once BigInts are enabled by default.
try {
BigIntPrototypeValueOf = BigInt.prototype.valueOf;
} catch (e) {}
function classOf(object) {
// Argument must not be null or undefined.
var string = ObjectPrototypeToString.call(object);
// String has format [object <ClassName>].
return string.substring(8, string.length - 1);
}
function ValueOf(value) {
switch (classOf(value)) {
case "Number":
return NumberPrototypeValueOf.call(value);
case "BigInt":
return BigIntPrototypeValueOf.call(value);
case "String":
return StringPrototypeValueOf.call(value);
case "Boolean":
return BooleanPrototypeValueOf.call(value);
case "Date":
return DatePrototypeValueOf.call(value);
default:
return value;
}
}
prettyPrinted = function prettyPrinted(value) {
switch (typeof value) {
case "string":
return JSONStringify(value);
case "bigint":
return String(value) + "n";
case "number":
if (value === 0 && (1 / value) < 0) return "-0";
// FALLTHROUGH.
case "boolean":
case "undefined":
case "function":
case "symbol":
return String(value);
case "object":
if (value === null) return "null";
var objectClass = classOf(value);
switch (objectClass) {
case "Number":
case "BigInt":
case "String":
case "Boolean":
case "Date":
return objectClass + "(" + prettyPrinted(ValueOf(value)) + ")";
case "RegExp":
return RegExpPrototypeToString.call(value);
case "Array":
var mapped = ArrayPrototypeMap.call(
value, prettyPrintedArrayElement);
var joined = ArrayPrototypeJoin.call(mapped, ",");
return "[" + joined + "]";
case "Uint8Array":
case "Int8Array":
case "Int16Array":
case "Uint16Array":
case "Uint32Array":
case "Int32Array":
case "Float32Array":
case "Float64Array":
var joined = ArrayPrototypeJoin.call(value, ",");
return objectClass + "([" + joined + "])";
case "Object":
break;
default:
return objectClass + "(" + String(value) + ")";
}
// classOf() returned "Object".
var name = value.constructor.name;
if (name) return name + "()";
return "Object()";
default:
return "-- unknown value --";
}
}
function prettyPrintedArrayElement(value, index, array) {
if (value === undefined && !(index in array)) return "";
return prettyPrinted(value);
}
failWithMessage = function failWithMessage(message) {
throw new MjsUnitAssertionError(message);
}
formatFailureText = function(expectedText, found, name_opt) {
var message = "Fail" + "ure";
if (name_opt) {
// Fix this when we ditch the old test runner.
message += " (" + name_opt + ")";
}
var foundText = prettyPrinted(found);
if (expectedText.length <= 40 && foundText.length <= 40) {
message += ": expected <" + expectedText + "> found <" + foundText + ">";
} else {
message += ":\nexpected:\n" + expectedText + "\nfound:\n" + foundText;
}
return message;
}
function fail(expectedText, found, name_opt) {
return failWithMessage(formatFailureText(expectedText, found, name_opt));
}
function deepObjectEquals(a, b) {
var aProps = Object.keys(a);
aProps.sort();
var bProps = Object.keys(b);
bProps.sort();
if (!deepEquals(aProps, bProps)) {
return false;
}
for (var i = 0; i < aProps.length; i++) {
if (!deepEquals(a[aProps[i]], b[aProps[i]])) {
return false;
}
}
return true;
}
deepEquals = function deepEquals(a, b) {
if (a === b) {
// Check for -0.
if (a === 0) return (1 / a) === (1 / b);
return true;
}
if (typeof a !== typeof b) return false;
if (typeof a === "number") return isNaN(a) && isNaN(b);
if (typeof a !== "object" && typeof a !== "function") return false;
// Neither a nor b is primitive.
var objectClass = classOf(a);
if (objectClass !== classOf(b)) return false;
if (objectClass === "RegExp") {
// For RegExp, just compare pattern and flags using its toString.
return RegExpPrototypeToString.call(a) ===
RegExpPrototypeToString.call(b);
}
// Functions are only identical to themselves.
if (objectClass === "Function") return false;
if (objectClass === "Array") {
var elementCount = 0;
if (a.length !== b.length) {
return false;
}
for (var i = 0; i < a.length; i++) {
if (!deepEquals(a[i], b[i])) return false;
}
return true;
}
if (objectClass === "String" || objectClass === "Number" ||
objectClass === "BigInt" || objectClass === "Boolean" ||
objectClass === "Date") {
if (ValueOf(a) !== ValueOf(b)) return false;
}
return deepObjectEquals(a, b);
}
assertSame = function assertSame(expected, found, name_opt) {
if (Object.is(expected, found)) return;
fail(prettyPrinted(expected), found, name_opt);
};
assertNotSame = function assertNotSame(expected, found, name_opt) {
if (!Object.is(expected, found)) return;
fail("not same as " + prettyPrinted(expected), found, name_opt);
}
assertEquals = function assertEquals(expected, found, name_opt) {
if (!deepEquals(found, expected)) {
fail(prettyPrinted(expected), found, name_opt);
}
};
assertNotEquals = function assertNotEquals(expected, found, name_opt) {
if (deepEquals(found, expected)) {
fail("not equals to " + prettyPrinted(expected), found, name_opt);
}
};
assertEqualsDelta =
function assertEqualsDelta(expected, found, delta, name_opt) {
if (Math.abs(expected - found) > delta) {
fail(prettyPrinted(expected) + " +- " + prettyPrinted(delta), found, name_opt);
}
};
assertArrayEquals = function assertArrayEquals(expected, found, name_opt) {
var start = "";
if (name_opt) {
start = name_opt + " - ";
}
assertEquals(expected.length, found.length, start + "array length");
if (expected.length === found.length) {
for (var i = 0; i < expected.length; ++i) {
assertEquals(expected[i], found[i],
start + "array element at index " + i);
}
}
};
assertPropertiesEqual = function assertPropertiesEqual(expected, found,
name_opt) {
// Check properties only.
if (!deepObjectEquals(expected, found)) {
fail(expected, found, name_opt);
}
};
assertToStringEquals = function assertToStringEquals(expected, found,
name_opt) {
if (expected !== String(found)) {
fail(expected, found, name_opt);
}
};
assertTrue = function assertTrue(value, name_opt) {
assertEquals(true, value, name_opt);
};
assertFalse = function assertFalse(value, name_opt) {
assertEquals(false, value, name_opt);
};
assertNull = function assertNull(value, name_opt) {
if (value !== null) {
fail("null", value, name_opt);
}
};
assertNotNull = function assertNotNull(value, name_opt) {
if (value === null) {
fail("not null", value, name_opt);
}
};
function executeCode(code) {
if (typeof code === 'function') return code();
if (typeof code === 'string') return eval(code);
failWithMessage(
'Given code is neither function nor string, but ' + (typeof code) +
': <' + prettyPrinted(code) + '>');
}
function checkException(e, type_opt, cause_opt) {
if (type_opt !== undefined) {
assertEquals('function', typeof type_opt);
assertInstanceof(e, type_opt);
}
if (RegExp !== undefined && cause_opt instanceof RegExp) {
assertMatches(cause_opt, e.message, 'Error message');
} else if (cause_opt !== undefined) {
assertEquals(cause_opt, e.message, 'Error message');
}
}
assertThrows = function assertThrows(code, type_opt, cause_opt) {
if (arguments.length > 1 && type_opt === undefined) {
failWithMessage('invalid use of assertThrows, unknown type_opt given');
}
if (type_opt !== undefined && typeof type_opt !== 'function') {
failWithMessage(
'invalid use of assertThrows, maybe you want assertThrowsEquals');
}
try {
executeCode(code);
} catch (e) {
checkException(e, type_opt, cause_opt);
return;
}
let msg = 'Did not throw exception';
if (type_opt !== undefined && type_opt.name !== undefined)
msg += ', expected ' + type_opt.name;
failWithMessage(msg);
};
assertThrowsEquals = function assertThrowsEquals(fun, val) {
try {
fun();
} catch (e) {
assertSame(val, e);
return;
}
failWithMessage('Did not throw exception, expected ' + prettyPrinted(val));
};
assertThrowsAsync = function assertThrowsAsync(promise, type_opt, cause_opt) {
if (arguments.length > 1 && type_opt === undefined) {
failWithMessage('invalid use of assertThrows, unknown type_opt given');
}
if (type_opt !== undefined && typeof type_opt !== 'function') {
failWithMessage(
'invalid use of assertThrows, maybe you want assertThrowsEquals');
}
let msg = 'Promise did not throw exception';
if (type_opt !== undefined && type_opt.name !== undefined)
msg += ', expected ' + type_opt.name;
return assertPromiseResult(
promise,
// Use setTimeout to throw the error again to get out of the promise
// chain.
res => setTimeout(_ => fail('<throw>', res, msg), 0),
e => checkException(e, type_opt, cause_opt));
};
assertInstanceof = function assertInstanceof(obj, type) {
if (!(obj instanceof type)) {
var actualTypeName = null;
var actualConstructor = obj && Object.getPrototypeOf(obj).constructor;
if (typeof actualConstructor === 'function') {
actualTypeName = actualConstructor.name || String(actualConstructor);
}
failWithMessage(
'Object <' + prettyPrinted(obj) + '> is not an instance of <' +
(type.name || type) + '>' +
(actualTypeName ? ' but of <' + actualTypeName + '>' : ''));
}
};
assertDoesNotThrow = function assertDoesNotThrow(code, name_opt) {
try {
executeCode(code);
} catch (e) {
if (e instanceof MjsUnitAssertionError) throw e;
failWithMessage("threw an exception: " + (e.message || e));
}
};
assertUnreachable = function assertUnreachable(name_opt) {
// Fix this when we ditch the old test runner.
var message = "Fail" + "ure: unreachable";
if (name_opt) {
message += " - " + name_opt;
}
failWithMessage(message);
};
assertContains = function(sub, value, name_opt) {
if (value == null ? (sub != null) : value.indexOf(sub) == -1) {
fail("contains '" + String(sub) + "'", value, name_opt);
}
};
assertMatches = function(regexp, str, name_opt) {
if (!(regexp instanceof RegExp)) {
regexp = new RegExp(regexp);
}
if (!str.match(regexp)) {
fail("should match '" + regexp + "'", str, name_opt);
}
};
function concatenateErrors(stack, exception) {
// If the exception does not contain a stack trace, wrap it in a new Error.
if (!exception.stack) exception = new Error(exception);
// If the exception already provides a special stack trace, we do not modify
// it.
if (typeof exception.stack !== 'string') {
return exception;
}
exception.stack = stack + '\n\n' + exception.stack;
return exception;
}
assertPromiseResult = function(promise, success, fail) {
if (success !== undefined) assertEquals('function', typeof success);
if (fail !== undefined) assertEquals('function', typeof fail);
assertInstanceof(promise, Promise);
const stack = (new Error()).stack;
var test_promise = promise.then(
result => {
try {
if (--promiseTestCount == 0) testRunner.notifyDone();
if (success !== undefined) success(result);
} catch (e) {
// Use setTimeout to throw the error again to get out of the promise
// chain.
setTimeout(_ => {
throw concatenateErrors(stack, e);
}, 0);
}
},
result => {
try {
if (--promiseTestCount == 0) testRunner.notifyDone();
if (fail === undefined) throw result;
fail(result);
} catch (e) {
// Use setTimeout to throw the error again to get out of the promise
// chain.
setTimeout(_ => {
throw concatenateErrors(stack, e);
}, 0);
}
});
if (!promiseTestChain) promiseTestChain = Promise.resolve();
// waitUntilDone is idempotent.
testRunner.waitUntilDone();
++promiseTestCount;
return promiseTestChain.then(test_promise);
};
var OptimizationStatusImpl = undefined;
var OptimizationStatus = function(fun, sync_opt) {
if (OptimizationStatusImpl === undefined) {
try {
OptimizationStatusImpl = new Function(
"fun", "sync", "return %GetOptimizationStatus(fun, sync);");
} catch (e) {
throw new Error("natives syntax not allowed");
}
}
return OptimizationStatusImpl(fun, sync_opt);
}
assertUnoptimized = function assertUnoptimized(
fun, sync_opt, name_opt, skip_if_maybe_deopted = true) {
if (sync_opt === undefined) sync_opt = "";
var opt_status = OptimizationStatus(fun, sync_opt);
// Tests that use assertUnoptimized() do not make sense if --always-opt
// option is provided. Such tests must add --no-always-opt to flags comment.
assertFalse((opt_status & V8OptimizationStatus.kAlwaysOptimize) !== 0,
"test does not make sense with --always-opt");
assertTrue((opt_status & V8OptimizationStatus.kIsFunction) !== 0, name_opt);
if (skip_if_maybe_deopted &&
(opt_status & V8OptimizationStatus.kMaybeDeopted) !== 0) {
// When --deopt-every-n-times flag is specified it's no longer guaranteed
// that particular function is still deoptimized, so keep running the test
// to stress test the deoptimizer.
return;
}
var is_optimized = (opt_status & V8OptimizationStatus.kOptimized) !== 0;
assertFalse(is_optimized, name_opt);
}
assertOptimized = function assertOptimized(
fun, sync_opt, name_opt, skip_if_maybe_deopted = true) {
if (sync_opt === undefined) sync_opt = "";
var opt_status = OptimizationStatus(fun, sync_opt);
// Tests that use assertOptimized() do not make sense for Lite mode where
// optimization is always disabled, explicitly exit the test with a warning.
if (opt_status & V8OptimizationStatus.kLiteMode) {
print("Warning: Test uses assertOptimized in Lite mode, skipping test.");
testRunner.quit(0);
}
// Tests that use assertOptimized() do not make sense if --no-opt
// option is provided. Such tests must add --opt to flags comment.
assertFalse((opt_status & V8OptimizationStatus.kNeverOptimize) !== 0,
"test does not make sense with --no-opt");
assertTrue(
(opt_status & V8OptimizationStatus.kIsFunction) !== 0,
'should be a function: ' + name_opt);
if (skip_if_maybe_deopted &&
(opt_status & V8OptimizationStatus.kMaybeDeopted) !== 0) {
// When --deopt-every-n-times flag is specified it's no longer guaranteed
// that particular function is still optimized, so keep running the test
// to stress test the deoptimizer.
return;
}
assertTrue(
(opt_status & V8OptimizationStatus.kOptimized) !== 0,
'should be optimized: ' + name_opt);
}
isNeverOptimizeLiteMode = function isNeverOptimizeLiteMode() {
var opt_status = OptimizationStatus(undefined, "");
return (opt_status & V8OptimizationStatus.kLiteMode) !== 0;
}
isNeverOptimize = function isNeverOptimize() {
var opt_status = OptimizationStatus(undefined, "");
return (opt_status & V8OptimizationStatus.kNeverOptimize) !== 0;
}
isAlwaysOptimize = function isAlwaysOptimize() {
var opt_status = OptimizationStatus(undefined, "");
return (opt_status & V8OptimizationStatus.kAlwaysOptimize) !== 0;
}
isInterpreted = function isInterpreted(fun) {
var opt_status = OptimizationStatus(fun, "");
assertTrue((opt_status & V8OptimizationStatus.kIsFunction) !== 0,
"not a function");
return (opt_status & V8OptimizationStatus.kOptimized) === 0 &&
(opt_status & V8OptimizationStatus.kInterpreted) !== 0;
}
isBaseline = function isBaseline(fun) {
var opt_status = OptimizationStatus(fun, "");
assertTrue((opt_status & V8OptimizationStatus.kIsFunction) !== 0,
"not a function");
return (opt_status & V8OptimizationStatus.kOptimized) === 0 &&
(opt_status & V8OptimizationStatus.kBaseline) !== 0;
}
isUnoptimized = function isUnoptimized(fun) {
return isInterpreted(fun) || isBaseline(fun);
}
isOptimized = function isOptimized(fun) {
var opt_status = OptimizationStatus(fun, "");
assertTrue((opt_status & V8OptimizationStatus.kIsFunction) !== 0,
"not a function");
return (opt_status & V8OptimizationStatus.kOptimized) !== 0;
}
isTurboFanned = function isTurboFanned(fun) {
var opt_status = OptimizationStatus(fun, "");
assertTrue((opt_status & V8OptimizationStatus.kIsFunction) !== 0,
"not a function");
return (opt_status & V8OptimizationStatus.kOptimized) !== 0 &&
(opt_status & V8OptimizationStatus.kTurboFanned) !== 0;
}
// Custom V8-specific stack trace formatter that is temporarily installed on
// the Error object.
MjsUnitAssertionError.prepareStackTrace = function(error, stack) {
// Trigger default formatting with recursion.
try {
// Filter-out all but the first mjsunit frame.
let filteredStack = [];
let inMjsunit = true;
for (let i = 0; i < stack.length; i++) {
let frame = stack[i];
if (inMjsunit) {
let file = frame.getFileName();
if (!file || !file.endsWith("mjsunit.js")) {
inMjsunit = false;
// Push the last mjsunit frame, typically containing the assertion
// function.
if (i > 0) ArrayPrototypePush.call(filteredStack, stack[i-1]);
ArrayPrototypePush.call(filteredStack, stack[i]);
}
continue;
}
ArrayPrototypePush.call(filteredStack, frame);
}
stack = filteredStack;
// Infer function names and calculate {max_name_length}
let max_name_length = 0;
ArrayPrototypeForEach.call(stack, each => {
let name = each.getFunctionName();
if (name == null) name = "";
if (each.isEval()) {
name = name;
} else if (each.isConstructor()) {
name = "new " + name;
} else if (each.isNative()) {
name = "native " + name;
} else if (!each.isToplevel()) {
name = each.getTypeName() + "." + name;
}
each.name = name;
max_name_length = Math.max(name.length, max_name_length)
});
// Format stack frames.
stack = ArrayPrototypeMap.call(stack, each => {
let frame = " at " + each.name.padEnd(max_name_length);
let fileName = each.getFileName();
if (each.isEval()) return frame + " " + each.getEvalOrigin();
frame += " " + (fileName ? fileName : "");
let line= each.getLineNumber();
frame += " " + (line ? line : "");
let column = each.getColumnNumber();
frame += (column ? ":" + column : "");
return frame;
});
return "" + error.message + "\n" + ArrayPrototypeJoin.call(stack, "\n");
} catch (e) {};
return error.stack;
}
})();
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