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Rhino is an open-source implementation of JavaScript written entirely in Java. It is typically
embedded into Java applications to provide scripting to end users.
// 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;
// This allows fetching the stack trace using TryCatch::StackTrace.
this.stack = new Error("").stack;
}
/*
* 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;
};
// Expected and found values the same objects, or the same primitive
// values.
// For known primitive values, please use assertEquals.
var assertSame;
// 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;
// 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 compatability, 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 that is compared
// to the type property on the thrown exception.
var assertThrows;
// 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;
(function () { // Scope for utility functions.
function classOf(object) {
// Argument must not be null or undefined.
var string = Object.prototype.toString.call(object);
// String has format [object ].
return string.substring(8, string.length - 1);
}
function PrettyPrint(value) {
switch (typeof value) {
case "string":
return JSON.stringify(value);
case "number":
if (value === 0 && (1 / value) < 0) return "-0";
// FALLTHROUGH.
case "boolean":
case "undefined":
case "function":
return String(value);
case "object":
if (value === null) return "null";
var objectClass = classOf(value);
switch (objectClass) {
case "Number":
case "String":
case "Boolean":
case "Date":
return objectClass + "(" + PrettyPrint(value.valueOf()) + ")";
case "RegExp":
return value.toString();
case "Array":
return "[" + value.map(PrettyPrintArrayElement).join(",") + "]";
case "Object":
break;
default:
return objectClass + "()";
}
// [[Class]] is "Object".
var name = value.constructor.name;
if (name) return name + "()";
return "Object()";
default:
return "-- unknown value --";
}
}
function PrettyPrintArrayElement(value, index, array) {
if (value === undefined && !(index in array)) return "";
return PrettyPrint(value);
}
function fail(expectedText, found, name_opt) {
var message = "Fail" + "ure";
if (name_opt) {
// Fix this when we ditch the old test runner.
message += " (" + name_opt + ")";
}
message += ": expected <" + expectedText +
"> found <" + PrettyPrint(found) + ">";
throw new MjsUnitAssertionError(message);
}
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;
}
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 (a.toString() === b.toString());
}
// 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 == "Boolean" || objectClass == "Date") {
if (a.valueOf() !== b.valueOf()) return false;
}
return deepObjectEquals(a, b);
}
function checkArity(args, arity, name) {
if (args.length < arity) {
fail(PrettyPrint(arity), args.length,
name + " requires " + arity + " or more arguments");
}
}
assertSame = function assertSame(expected, found, name_opt) {
checkArity(arguments, 2, "assertSame");
// TODO(mstarzinger): We should think about using Harmony's egal operator
// or the function equivalent Object.is() here.
if (found === expected) {
if (expected !== 0 || (1 / expected) == (1 / found)) return;
} else if ((expected !== expected) && (found !== found)) {
return;
}
fail(PrettyPrint(expected), found, name_opt);
};
assertEquals = function assertEquals(expected, found, name_opt) {
checkArity(arguments, 2, "assertEquals");
if (!deepEquals(found, expected)) {
fail(PrettyPrint(expected), found, name_opt);
}
};
assertEqualsDelta =
function assertEqualsDelta(expected, found, delta, name_opt) {
assertTrue(Math.abs(expected - found) <= delta, 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);
}
};
assertThrows = function assertThrows(code, type_opt, cause_opt) {
var threwException = true;
try {
if (typeof code == 'function') {
code();
} else {
eval(code);
}
threwException = false;
} catch (e) {
if (typeof type_opt == 'function') {
assertInstanceof(e, type_opt);
}
if (arguments.length >= 3) {
assertEquals(e.type, cause_opt);
}
// Success.
return;
}
throw new MjsUnitAssertionError("Did not throw exception");
};
assertInstanceof = function assertInstanceof(obj, type) {
if (!(obj instanceof type)) {
var actualTypeName = null;
var actualConstructor = Object.getPrototypeOf(obj).constructor;
if (typeof actualConstructor == "function") {
actualTypeName = actualConstructor.name || String(actualConstructor);
}
fail("Object <" + PrettyPrint(obj) + "> is not an instance of <" +
(type.name || type) + ">" +
(actualTypeName ? " but of < " + actualTypeName + ">" : ""));
}
};
assertDoesNotThrow = function assertDoesNotThrow(code, name_opt) {
try {
if (typeof code == 'function') {
code();
} else {
eval(code);
}
} catch (e) {
fail("threw an exception: ", e.message || e, name_opt);
}
};
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;
}
throw new MjsUnitAssertionError(message);
};
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) {
if (sync_opt === undefined) sync_opt = "";
assertTrue(OptimizationStatus(fun, sync_opt) != 1, name_opt);
}
assertOptimized = function assertOptimized(fun, sync_opt, name_opt) {
if (sync_opt === undefined) sync_opt = "";
assertTrue(OptimizationStatus(fun, sync_opt) != 2, name_opt);
}
})();
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