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TiddlyWiki5/editions/tw2/source/tiddlywiki/test/jqMock/jqMock.js

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/*
* jqMock - The JavaScript Mock framework for jQuery / jqUnit
* http://code.google.com/p/jqmock/
* version 1.1
*
* Copyright 2008 Kenneth Ko, under the GNU Lesser General Public License
*
* By Kenneth Ko
* http://longgoldenears.blogspot.com/
*
* ==================================================================
* Release Notes:
* --------------
* version 1.1
* - [3] change behaviour of verify() to NOT check unexpected invocations
* (note: it does check unexpected invocations of calls which were setup as expectations)
* - [3] added verifyAll() method which will check unexpected invocations
* - [4] added new assertion method to check for exceptions being thrown, expectThatExceptionThrown()
* - [4] added new expression to help assert the exception, is.exception({name: ... , message: ..., type: ...})
* - refactoring, ArgExpectation has been internally renamed to Expression
*
* version 1.01
* - [1] [2] bug fixes: circular references
*
* version 1.0
* - initial release
*
*/
var jqMock = jqMock || {};
(function ($) {
//======== Utils =============
function _isObjExpected(actual, expected, oneway, rchain) {
oneway = oneway || false;
rchain = rchain || [] ; // holds elements already compared in the recursion, to prevent circular references
if (actual === expected) {
return true;
} else if (expected instanceof Expression) {
return expected.assert(actual);
} else if (actual===null || expected===null) {
return false;
} else if (actual instanceof Array && expected instanceof Array) {
// array compare
if (actual.length != expected.length)
return false;
for(var i=0; i<actual.length; i++) {
var result = _recurseIsObjExpected(actual[i], expected[i], oneway, rchain, expected[i]);
if (!result) return false;
//if (!_isObjExpected(actual[i],expected[i]))
// return false;
}
return true;
} else if (typeof actual == "object" && typeof expected == "object") {
// object compare, both ways
for(var i in expected) {
var result = _recurseIsObjExpected(actual[i], expected[i], oneway, rchain, expected[i]);
if (!result) return false;
// if ( !_isObjExpected(actual[i], expected[i]))
// return false;
}
if (!oneway) {
for(var i in actual) {
if ( !_isObjExpected(actual[i], expected[i]))
return false;
}
}
return true;
} else {
return false;
}
};
function _recurseIsObjExpected(actual, expected, oneway, rchain, loopvar) {
if (typeof loopvar == "object") {
for(var i=0; i<rchain.length; i++) {
if (loopvar===rchain[i])
throw new Error("Circular Reference detected in the object!");
}
var chainCount = rchain.length;
rchain.push(loopvar);
var result = _isObjExpected(actual, expected, oneway, rchain);
rchain.splice(chainCount);
return result;
} else {
return _isObjExpected(actual, expected, oneway, rchain);
}
}
function assertThat(actual, expected, msg) {
var result = actual===expected || _isObjExpected(actual, expected);
msg = (msg ? msg + ": " : "");
msg += (result ? "actual matched expectation" : "object did not match expectation, actual: " + tostring(actual) + ", expected: " + tostring(expected));
ok(result, msg);
};
var MAX_DEPTH = 100;
function tostring(obj, rchain) {
rchain = rchain || [];
if (rchain.length > MAX_DEPTH)
return ".....";
if (typeof obj=="object") {
for(var a=0; a<rchain.length; a++) {
if (obj==rchain[a]) {
return "...";
}
}
}
rchain.push(obj);
var rchainCount = rchain.length;
var result = [];
if (obj === null) {
return "null";
} else if (obj === undefined) {
return "undefined";
} else if (obj instanceof Array) {
result.push("[");
for(var j=0; j<obj.length; j++) {
result.push(tostring(obj[j], rchain));
result.push(",");
}
if (obj.length>0)
result[result.length-1] = "]";
else
result.push("]");
} else if (obj instanceof Expression) {
return obj.tostring();
} else if (obj instanceof Error) {
// for errors, only print name and message (don't want stack)
var err = {};
if ("name" in obj) err.name = obj.name;
if ("message" in obj) err.message = obj.message;
return tostring(err, rchain);
} else if ($.isFunction(obj)) {
//} else if (typeof obj == "function") {
return "function()";
} else if (typeof obj == "object") {
result.push("{");
for(var i in obj) {
if (/^__/.test(i)) continue;
result.push(i);
result.push(":");
result.push(tostring(obj[i], rchain));
result.push(",");
}
result[result.length==1 ? result.length : result.length-1] = "}";
} else {
result.push(typeof obj == "string" ? "'" : "");
result.push(obj);
result.push(typeof obj == "string" ? "'" : "");
}
rchain.splice(rchainCount);
return result.join("");
};
function _getClassName(clz) {
return $.trim(clz.toString()).match(/^function\s(.*)\(/)[1];
}
function expectThatExceptionThrown(fn, expression) {
try {
fn();
ok(false, "The expected exception was never thrown. Expression was: " + tostring(expression));
} catch(ex) {
assertThat(ex, expression, "expected exception matching " + tostring(expression) + " to be thrown");
}
};
//======== Modifier =============
function Modifier(fnName, _origFn) {
this._fnName = fnName;
this._origFn = _origFn;
this._args = []; // default no arg
this._multiplicity = MultiplicityFactory.exactly(1); // default of 1
this._returnValue = undefined;
this._returnValueSpecified = false;
this._exception = null;
this._matchCount = 0;
}
Modifier.prototype.args = function() {
var expectedArgs = Array.prototype.slice.call(arguments);
this._args = expectedArgs;
return this;
};
Modifier.prototype.multiplicity = function(m) {
if (m instanceof Multiplicity)
this._multiplicity = m;
else if (typeof m == "number")
this._multiplicity = MultiplicityFactory.exactly(m);
else
throw new Error("Invalid argument for multiplicity()");
return this;
};
Modifier.prototype.returnValue = function(rv) {
this._returnValueSpecified = true;
if (typeof rv != "undefined")
this._returnValue = rv;
};
Modifier.prototype.throwException = function(ex) {
this._exception = ex;
};
var MATCHRESULT_does_not_match = -1;
var MATCHRESULT_matched_but_disabled = 0;
var MATCHRESULT_matched = 1;
Modifier.prototype.matches = function(actualArgs) {
var b = true;
var expectedArgs = this._args;
if (expectedArgs.length==0) {
// handle no argument
b = (actualArgs.length==0);
} else if (expectedArgs.length == actualArgs.length) {
for(var i=0; i<expectedArgs.length; i++) {
if (!_isObjExpected(actualArgs[i], expectedArgs[i])) {
b = false;
break;
}
}
} else {
b = false;
}
if(!b)
return MATCHRESULT_does_not_match; // does not match args
else if (this._multiplicity.isDisabled)
return MATCHRESULT_matched_but_disabled; // matches args, but disabled
else {
this._multiplicity.verify(++this._matchCount);
return MATCHRESULT_matched; // matches args, and still enabled.
}
};
Modifier.prototype.doAction = function(scope, args) {
if (this._returnValueSpecified) {
return this._returnValue;
} else if (this._exception) {
throw this._exception;
} else {
return this._origFn.apply(scope, args);
}
};
Modifier.prototype.satisfied = function() {
return this._multiplicity.satisfied;
};
Modifier.prototype.tostring = function() {
return [
(this._multiplicity.satisfied ? "&nbsp;&nbsp;&nbsp;" : "&rarr;"),
this._matchCount, " ",
this._multiplicity.tostring(), " ",
this._fnName, "(",
tostring(this._args).replace(/^\[(.*)\]$/, "$1"),
")"
].join("");
};
// ======= Multiplicity ===============
var MultiplicityType = {
EXACTLY:0,
ATLEAST:1,
ATMOST:2,
RANGE:3
};
function Multiplicity(type, lower, upper, initiallySatisfied) {
this.type = type;
this.lower = lower;
this.upper = upper;
this.satisfied = initiallySatisfied;
this.isDisabled = false;
};
Multiplicity.prototype.verify = function(count) {
this.satisfied = (count >= this.lower & count <= this.upper);
this.isDisabled = (count >= this.upper);
};
Multiplicity.prototype.tostring = function() {
if (this.type==MultiplicityType.EXACTLY) {
return "(" + this.lower + ")";
} else {
return [
"(", this.lower, "..",
(this.upper==Infinity ? "*" : this.upper),")"
].join("");
}
};
var MultiplicityFactory = {
exactly : function(n) {
if (n==0) {
// zero is actually atMost(0)
return new Multiplicity(MultiplicityType.ATMOST, 0, 0, true);
} else {
return new Multiplicity(MultiplicityType.EXACTLY, n, n, false);
}
},
times : function(n,m) {
if (arguments.length == 1) {
return new Multiplicity(MultiplicityType.EXACTLY, n, n, false);
} else {
if (n==0)
// (0..m) is actually atMost(m)
return new Multiplicity(MultiplicityType.ATMOST, 0, m, true);
else
return new Multiplicity(MultiplicityType.RANGE, n, m, false);
}
},
atLeast : function(n) {
return new Multiplicity(MultiplicityType.ATLEAST, n, Infinity, false);
},
atMost : function(n) {
return new Multiplicity(MultiplicityType.ATMOST, 0, n, true);
}
};
// ======= Expression ===============
var ExpressionType = {
ANYTHING:0,
NOT:1,
INSTANCEOF:2,
SUPERSET:3,
REGEX:4,
ANYOF:5,
ALLOF:6,
CUSTOM: 7,
ERROR:8
};
function Expression(type, param) {
this.type = type;
this.param = param;
};
Expression.prototype.assert = function(actual) {
switch(this.type) {
case ExpressionType.ANYTHING:
return true;
case ExpressionType.NOT:
return !_isObjExpected(actual, this.param);
case ExpressionType.INSTANCEOF:
return actual instanceof this.param;
case ExpressionType.SUPERSET:
return _isObjExpected(actual, this.param, true);
case ExpressionType.REGEX:
return this.param.test(actual);
case ExpressionType.ANYOF:
for(var i=0; i<this.param.length; i++) {
if (_isObjExpected(actual, this.param[i]))
return true;
}
return false;
case ExpressionType.ALLOF:
for(var i=0; i<this.param.length; i++) {
if (!_isObjExpected(actual, this.param[i]))
return false;
}
return true;
case ExpressionType.CUSTOM:
return this.param(actual);
case ExpressionType.ERROR:
var exOk = true;
if ("name" in this.param)
exOk = exOk && (this.param.name === actual.name);
if ("message" in this.param)
exOk = exOk && (this.param.message === actual.message);
if ("type" in this.param) // type= is.instanceOf(Class)
exOk = exOk && (_isObjExpected(actual, this.param.type));
return exOk;
}
};
Expression.prototype.tostring = function() {
switch(this.type) {
case ExpressionType.ANYTHING:
return "is.anything";
case ExpressionType.NOT:
return "is.not(" + tostring(this.param) +")";
case ExpressionType.INSTANCEOF:
//return "is.instanceOf(" + $.trim(this.param.toString()).match(/^function\s(.*)\(/)[1] +")";
return "is.instanceOf(" + _getClassName(this.param) +")";
case ExpressionType.SUPERSET:
return "is.objectThatIncludes(" + tostring(this.param) +")";
case ExpressionType.REGEX:
return "is.regex(" + this.param.toString() +")";
case ExpressionType.ANYOF:
return "is.anyOf(" + tostring(this.param) +")";
case ExpressionType.ALLOF:
return "is.allOf(" + tostring(this.param) +")";
case ExpressionType.CUSTOM:
return "is.custom(function)";
case ExpressionType.ERROR:
if (_isObjExpected(this.param, {}))
return "is.exception()";
else
return "is.exception(" + tostring(this.param) +")";
}
};
var ExpressionFactory = {
anything : new Expression(ExpressionType.ANYTHING),
not: function(param) {
return new Expression(ExpressionType.NOT, param);
},
instanceOf: function(param) {
if (!$.isFunction(param))
throw new Error("Invalid argument to is.instanceOf() , argument must be a Class");
return new Expression(ExpressionType.INSTANCEOF, param);
},
objectThatIncludes: function(param) {
return new Expression(ExpressionType.SUPERSET, param);
},
regex: function(param) {
if (!(param instanceof RegExp))
throw new Error("Invalid argument to is.regex() , argument must be regex");
return new Expression(ExpressionType.REGEX, param);
},
anyOf: function(param) {
if (!(param instanceof Array))
throw new Error("Invalid argument to is.anyOf() , argument must be an Array");
return new Expression(ExpressionType.ANYOF, param);
},
allOf: function(param) {
if (!(param instanceof Array))
throw new Error("Invalid argument to is.allOf() , argument must be an Array");
return new Expression(ExpressionType.ALLOF, param);
},
custom: function(param) {
if (!$.isFunction(param))
throw new Error("Invalid argument to is.custom() , argument must be a Function that returns a boolean value");
return new Expression(ExpressionType.CUSTOM, param);
},
exception: function(param) {
if (typeof param == "string")
return new Expression(ExpressionType.ERROR, {message: param});
if (typeof param == "undefined")
param = {};
if (typeof param != "object")
throw new Error("Invalid argument to is.exception() , argument must be an object or string");
if ("type" in param && !$.isFunction(param["type"]))
throw new Error("Invalid argument to is.exception() , the type attribute of the parameter must be a Class");
if ("type" in param) // convert type to is.instanceof()
param.type = new Expression(ExpressionType.INSTANCEOF, param.type);
return new Expression(ExpressionType.ERROR, param);
}
};
// ======= Mock ==============
function Mock(obj, fnName) {
var _unmatched = [];
var _modifiers = [];
var _obj = obj;
var _fnName = fnName;
var _isOrdered = false;
var _oep = 0; // ordered expectation pointer
var _oef = false; // ordered expectation has failed
if (obj ==undefined || obj[fnName] == undefined) {
throw new Error("Could not create Mock: the object or function you specified is not defined, obj." + fnName);
}
if (!$.isFunction(obj[fnName])) {
throw new Error("Could not create Mock: " + fnName + " is not a function");
}
var intercept = function() {
var matchedModifier;
var matchResult;
// ordered expectations
if (_isOrdered) {
if (!_oef) {
matchResult = _modifiers[_oep].matches(arguments);
if (matchResult == MATCHRESULT_matched) {
matchedModifier = _modifiers[_oep];
} else {
_oep++;
if (_modifiers.length > _oep) {
matchResult = _modifiers[_oep].matches(arguments);
if (matchResult == MATCHRESULT_matched) {
matchedModifier = _modifiers[_oep];
}
}
}
}
if (matchedModifier === undefined)
_oef = true;
} else {
// unordered expectations, matches first one
for(var i=0; i<_modifiers.length; i++) {
matchResult = _modifiers[i].matches(arguments);
if (matchResult == MATCHRESULT_matched) {
matchedModifier = _modifiers[i];
break;
}
}
}
if (matchedModifier)
return matchedModifier.doAction(this, arguments);
// store the unmatched expectation as an error string
var actualArgs = Array.prototype.slice.call(arguments);
var unmatchedMsg = fnName + "(" + tostring(actualArgs).replace(/^\[(.*)\]$/, "$1") + ")";
_unmatched.push( {'matchResult': matchResult, 'msg': unmatchedMsg} );
};
if (!obj[fnName].isMock) {
var _origFn = obj[fnName];
obj[fnName] = intercept;
obj[fnName].isMock = true;
} else {
throw new Error("Could not create Mock: you tried to overwrite a function which is already a mock!");
}
this.reset = function() {
_oep = 0;
_oef = false;
for(var i=0; i<_modifiers.length; i++)
delete _modifiers[i];
_modifiers = [];
for(var i=0; i<_unmatched.length; i++)
delete _unmatched[i];
_unmatched = [];
};
this.restore = function() {
this.reset();
_obj[_fnName] = _origFn;
};
this.modify = function() {
_modifiers.push(new Modifier(_fnName, _origFn));
return _modifiers[_modifiers.length-1];
};
this.setOrdered = function(b) {
_isOrdered = b;
};
// check that all expectations satisfied
var _verify = function(verifyUnmatched) {
if (_modifiers.length > 0) {
var b = true;
for(var i=0; i<_modifiers.length; i++) {
if (!_modifiers[i].satisfied()){
b = false;
break;
}
}
// unsatisfied expectations
var msg = "";
if (!b) {
msg += (_isOrdered ? "Ordered" : "Unordered") + " expectations have not yet been satisfied:<br/>";
for(var i=0; i<_modifiers.length; i++) {
msg += _modifiers[i].tostring() + "<br/>";
}
}
if (_unmatched.length>0) {
// unmatched expectations, when using verifyAll()
if (verifyUnmatched) {
b = false;
msg += "No expectation matched for the following calls:<br/>"
for(var i=0; i<_unmatched.length; i++) {
msg += _unmatched[i].msg + "<br/>";
}
// unmatched expectations, when using verify()
} else {
var msg1 = "";
for(var i=0; i<_unmatched.length; i++) {
if (_unmatched[i].matchResult == MATCHRESULT_matched_but_disabled)
msg1 += _unmatched[i].msg + "<br/>";
}
if (msg1.length>0) {
msg += "No expectation matched for the following calls which were setup as expectations:<br/>" + msg1;
b = false;
}
}
}
if (msg=="")
msg = _modifiers.length + " expectations were satisfied";
ok(b, msg);
} else {
throw new Error("Expectation setup error. You must set up some expectations");
}
};
this.verify = function() {
_verify(false);
};
this.verifyAll = function() {
_verify(true);
};
};
//=====changed expect to expects as window.expect exists in qunit==============
function addShortcut() {
if (window.expects || window.is)
throw new Error("Cannot add shortcuts, expect() or is() already exists in global scope!");
expects = jqMock.expects;
is = jqMock.is;
};
//===================
$.extend(jqMock, {
assertThat: assertThat,
tostring: tostring,
expectThatExceptionThrown: expectThatExceptionThrown,
Mock: Mock,
// changed expect to expects
expects: MultiplicityFactory,
is: ExpressionFactory,
addShortcut: addShortcut
});
}) (jQuery);