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angular.js/test/ng/parseSpec.js

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JavaScript
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'use strict';
describe('parser', function() {
beforeEach(function() {
/* global getterFnCacheDefault: true */
/* global getterFnCacheExpensive: true */
// clear caches
getterFnCacheDefault = createMap();
getterFnCacheExpensive = createMap();
});
describe('lexer', function() {
var lex;
beforeEach(function() {
/* global Lexer: false */
lex = function() {
var lexer = new Lexer({csp: false});
return lexer.lex.apply(lexer, arguments);
};
});
it('should tokenize a string', function() {
var tokens = lex("a.bc[22]+1.3|f:'a\\\'c':\"d\\\"e\"");
var i = 0;
expect(tokens[i].index).toEqual(0);
expect(tokens[i].text).toEqual('a.bc');
i++;
expect(tokens[i].index).toEqual(4);
expect(tokens[i].text).toEqual('[');
i++;
expect(tokens[i].index).toEqual(5);
expect(tokens[i].text).toEqual(22);
i++;
expect(tokens[i].index).toEqual(7);
expect(tokens[i].text).toEqual(']');
i++;
expect(tokens[i].index).toEqual(8);
expect(tokens[i].text).toEqual('+');
i++;
expect(tokens[i].index).toEqual(9);
expect(tokens[i].text).toEqual(1.3);
i++;
expect(tokens[i].index).toEqual(12);
expect(tokens[i].text).toEqual('|');
i++;
expect(tokens[i].index).toEqual(13);
expect(tokens[i].text).toEqual('f');
i++;
expect(tokens[i].index).toEqual(14);
expect(tokens[i].text).toEqual(':');
i++;
expect(tokens[i].index).toEqual(15);
expect(tokens[i].string).toEqual("a'c");
i++;
expect(tokens[i].index).toEqual(21);
expect(tokens[i].text).toEqual(':');
i++;
expect(tokens[i].index).toEqual(22);
expect(tokens[i].string).toEqual('d"e');
});
it('should tokenize identifiers with spaces after dots', function() {
var tokens = lex('foo. bar');
expect(tokens[0].text).toEqual('foo');
expect(tokens[1].text).toEqual('.');
expect(tokens[2].text).toEqual('bar');
});
it('should tokenize undefined', function() {
var tokens = lex("undefined");
var i = 0;
expect(tokens[i].index).toEqual(0);
expect(tokens[i].text).toEqual('undefined');
expect(undefined).toEqual(tokens[i].fn());
});
it('should tokenize quoted string', function() {
var str = "['\\'', \"\\\"\"]";
var tokens = lex(str);
expect(tokens[1].index).toEqual(1);
expect(tokens[1].string).toEqual("'");
expect(tokens[3].index).toEqual(7);
expect(tokens[3].string).toEqual('"');
});
it('should tokenize escaped quoted string', function() {
var str = '"\\"\\n\\f\\r\\t\\v\\u00A0"';
var tokens = lex(str);
expect(tokens[0].string).toEqual('"\n\f\r\t\v\u00A0');
});
it('should tokenize unicode', function() {
var tokens = lex('"\\u00A0"');
expect(tokens.length).toEqual(1);
expect(tokens[0].string).toEqual('\u00a0');
});
it('should ignore whitespace', function() {
var tokens = lex("a \t \n \r b");
expect(tokens[0].text).toEqual('a');
expect(tokens[1].text).toEqual('b');
});
it('should tokenize relation and equality', function() {
var tokens = lex("! == != < > <= >= === !==");
expect(tokens[0].text).toEqual('!');
expect(tokens[1].text).toEqual('==');
expect(tokens[2].text).toEqual('!=');
expect(tokens[3].text).toEqual('<');
expect(tokens[4].text).toEqual('>');
expect(tokens[5].text).toEqual('<=');
expect(tokens[6].text).toEqual('>=');
expect(tokens[7].text).toEqual('===');
expect(tokens[8].text).toEqual('!==');
});
it('should tokenize logical and ternary', function() {
var tokens = lex("&& || ? :");
expect(tokens[0].text).toEqual('&&');
expect(tokens[1].text).toEqual('||');
expect(tokens[2].text).toEqual('?');
expect(tokens[3].text).toEqual(':');
});
it('should tokenize statements', function() {
var tokens = lex("a;b;");
expect(tokens[0].text).toEqual('a');
expect(tokens[1].text).toEqual(';');
expect(tokens[2].text).toEqual('b');
expect(tokens[3].text).toEqual(';');
});
it('should tokenize function invocation', function() {
var tokens = lex("a()");
expect(tokens.map(function(t) { return t.text;})).toEqual(['a', '(', ')']);
});
it('should tokenize method invocation', function() {
var tokens = lex("a.b.c (d) - e.f()");
expect(tokens.map(function(t) { return t.text;})).
toEqual(['a.b', '.', 'c', '(', 'd', ')', '-', 'e', '.', 'f', '(', ')']);
});
it('should tokenize number', function() {
var tokens = lex("0.5");
expect(tokens[0].text).toEqual(0.5);
});
it('should tokenize negative number', inject(function($rootScope) {
var value = $rootScope.$eval("-0.5");
expect(value).toEqual(-0.5);
value = $rootScope.$eval("{a:-0.5}");
expect(value).toEqual({a:-0.5});
}));
it('should tokenize number with exponent', inject(function($rootScope) {
var tokens = lex("0.5E-10");
expect(tokens[0].text).toEqual(0.5E-10);
expect($rootScope.$eval("0.5E-10")).toEqual(0.5E-10);
tokens = lex("0.5E+10");
expect(tokens[0].text).toEqual(0.5E+10);
}));
it('should throws exception for invalid exponent', function() {
expect(function() {
lex("0.5E-");
}).toThrowMinErr('$parse', 'lexerr', 'Lexer Error: Invalid exponent at column 4 in expression [0.5E-].');
expect(function() {
lex("0.5E-A");
}).toThrowMinErr('$parse', 'lexerr', 'Lexer Error: Invalid exponent at column 4 in expression [0.5E-A].');
});
it('should tokenize number starting with a dot', function() {
var tokens = lex(".5");
expect(tokens[0].text).toEqual(0.5);
});
it('should throw error on invalid unicode', function() {
expect(function() {
lex("'\\u1''bla'");
}).toThrowMinErr("$parse", "lexerr", "Lexer Error: Invalid unicode escape [\\u1''b] at column 2 in expression ['\\u1''bla'].");
});
});
var $filterProvider, scope;
beforeEach(module(['$filterProvider', function(filterProvider) {
$filterProvider = filterProvider;
}]));
forEach([true, false], function(cspEnabled) {
describe('csp: ' + cspEnabled, function() {
beforeEach(module(function($provide) {
$provide.decorator('$sniffer', function($delegate) {
$delegate.csp = cspEnabled;
return $delegate;
});
}, provideLog));
beforeEach(inject(function($rootScope) {
scope = $rootScope;
}));
it('should parse expressions', function() {
/*jshint -W006, -W007 */
expect(scope.$eval("-1")).toEqual(-1);
expect(scope.$eval("1 + 2.5")).toEqual(3.5);
expect(scope.$eval("1 + -2.5")).toEqual(-1.5);
expect(scope.$eval("1+2*3/4")).toEqual(1+2*3/4);
expect(scope.$eval("0--1+1.5")).toEqual(0- -1 + 1.5);
expect(scope.$eval("-0--1++2*-3/-4")).toEqual(-0- -1+ +2*-3/-4);
expect(scope.$eval("1/2*3")).toEqual(1/2*3);
});
it('should parse comparison', function() {
/* jshint -W041 */
expect(scope.$eval("false")).toBeFalsy();
expect(scope.$eval("!true")).toBeFalsy();
expect(scope.$eval("1==1")).toBeTruthy();
expect(scope.$eval("1==true")).toBeTruthy();
expect(scope.$eval("1===1")).toBeTruthy();
expect(scope.$eval("1==='1'")).toBeFalsy();
expect(scope.$eval("1===true")).toBeFalsy();
expect(scope.$eval("'true'===true")).toBeFalsy();
expect(scope.$eval("1!==2")).toBeTruthy();
expect(scope.$eval("1!=='1'")).toBeTruthy();
expect(scope.$eval("1!=2")).toBeTruthy();
expect(scope.$eval("1<2")).toBeTruthy();
expect(scope.$eval("1<=1")).toBeTruthy();
expect(scope.$eval("1>2")).toEqual(1>2);
expect(scope.$eval("2>=1")).toEqual(2>=1);
expect(scope.$eval("true==2<3")).toEqual(true == 2<3);
expect(scope.$eval("true===2<3")).toEqual(true === 2<3);
});
it('should parse logical', function() {
expect(scope.$eval("0&&2")).toEqual(0&&2);
expect(scope.$eval("0||2")).toEqual(0||2);
expect(scope.$eval("0||1&&2")).toEqual(0||1&&2);
});
it('should parse ternary', function() {
var returnTrue = scope.returnTrue = function() { return true; };
var returnFalse = scope.returnFalse = function() { return false; };
var returnString = scope.returnString = function() { return 'asd'; };
var returnInt = scope.returnInt = function() { return 123; };
var identity = scope.identity = function(x) { return x; };
// Simple.
expect(scope.$eval('0?0:2')).toEqual(0?0:2);
expect(scope.$eval('1?0:2')).toEqual(1?0:2);
// Nested on the left.
expect(scope.$eval('0?0?0:0:2')).toEqual(0?0?0:0:2);
expect(scope.$eval('1?0?0:0:2')).toEqual(1?0?0:0:2);
expect(scope.$eval('0?1?0:0:2')).toEqual(0?1?0:0:2);
expect(scope.$eval('0?0?1:0:2')).toEqual(0?0?1:0:2);
expect(scope.$eval('0?0?0:2:3')).toEqual(0?0?0:2:3);
expect(scope.$eval('1?1?0:0:2')).toEqual(1?1?0:0:2);
expect(scope.$eval('1?1?1:0:2')).toEqual(1?1?1:0:2);
expect(scope.$eval('1?1?1:2:3')).toEqual(1?1?1:2:3);
expect(scope.$eval('1?1?1:2:3')).toEqual(1?1?1:2:3);
// Nested on the right.
expect(scope.$eval('0?0:0?0:2')).toEqual(0?0:0?0:2);
expect(scope.$eval('1?0:0?0:2')).toEqual(1?0:0?0:2);
expect(scope.$eval('0?1:0?0:2')).toEqual(0?1:0?0:2);
expect(scope.$eval('0?0:1?0:2')).toEqual(0?0:1?0:2);
expect(scope.$eval('0?0:0?2:3')).toEqual(0?0:0?2:3);
expect(scope.$eval('1?1:0?0:2')).toEqual(1?1:0?0:2);
expect(scope.$eval('1?1:1?0:2')).toEqual(1?1:1?0:2);
expect(scope.$eval('1?1:1?2:3')).toEqual(1?1:1?2:3);
expect(scope.$eval('1?1:1?2:3')).toEqual(1?1:1?2:3);
// Precedence with respect to logical operators.
expect(scope.$eval('0&&1?0:1')).toEqual(0&&1?0:1);
expect(scope.$eval('1||0?0:0')).toEqual(1||0?0:0);
expect(scope.$eval('0?0&&1:2')).toEqual(0?0&&1:2);
expect(scope.$eval('0?1&&1:2')).toEqual(0?1&&1:2);
expect(scope.$eval('0?0||0:1')).toEqual(0?0||0:1);
expect(scope.$eval('0?0||1:2')).toEqual(0?0||1:2);
expect(scope.$eval('1?0&&1:2')).toEqual(1?0&&1:2);
expect(scope.$eval('1?1&&1:2')).toEqual(1?1&&1:2);
expect(scope.$eval('1?0||0:1')).toEqual(1?0||0:1);
expect(scope.$eval('1?0||1:2')).toEqual(1?0||1:2);
expect(scope.$eval('0?1:0&&1')).toEqual(0?1:0&&1);
expect(scope.$eval('0?2:1&&1')).toEqual(0?2:1&&1);
expect(scope.$eval('0?1:0||0')).toEqual(0?1:0||0);
expect(scope.$eval('0?2:0||1')).toEqual(0?2:0||1);
expect(scope.$eval('1?1:0&&1')).toEqual(1?1:0&&1);
expect(scope.$eval('1?2:1&&1')).toEqual(1?2:1&&1);
expect(scope.$eval('1?1:0||0')).toEqual(1?1:0||0);
expect(scope.$eval('1?2:0||1')).toEqual(1?2:0||1);
// Function calls.
expect(scope.$eval('returnTrue() ? returnString() : returnInt()')).toEqual(returnTrue() ? returnString() : returnInt());
expect(scope.$eval('returnFalse() ? returnString() : returnInt()')).toEqual(returnFalse() ? returnString() : returnInt());
expect(scope.$eval('returnTrue() ? returnString() : returnInt()')).toEqual(returnTrue() ? returnString() : returnInt());
expect(scope.$eval('identity(returnFalse() ? returnString() : returnInt())')).toEqual(identity(returnFalse() ? returnString() : returnInt()));
});
it('should parse string', function() {
expect(scope.$eval("'a' + 'b c'")).toEqual("ab c");
});
it('should parse filters', function() {
$filterProvider.register('substring', valueFn(function(input, start, end) {
return input.substring(start, end);
}));
expect(function() {
scope.$eval("1|nonexistent");
}).toThrowMinErr('$injector', 'unpr', 'Unknown provider: nonexistentFilterProvider <- nonexistentFilter');
scope.offset = 3;
expect(scope.$eval("'abcd'|substring:1:offset")).toEqual("bc");
expect(scope.$eval("'abcd'|substring:1:3|uppercase")).toEqual("BC");
});
it('should access scope', function() {
scope.a = 123;
scope.b = {c: 456};
expect(scope.$eval("a", scope)).toEqual(123);
expect(scope.$eval("b.c", scope)).toEqual(456);
expect(scope.$eval("x.y.z", scope)).not.toBeDefined();
});
it('should handle white-spaces around dots in paths', function() {
scope.a = {b: 4};
expect(scope.$eval("a . b", scope)).toEqual(4);
expect(scope.$eval("a. b", scope)).toEqual(4);
expect(scope.$eval("a .b", scope)).toEqual(4);
expect(scope.$eval("a . \nb", scope)).toEqual(4);
});
it('should throw syntax error exception for identifiers ending with a dot', function() {
scope.a = {b: 4};
expect(function() {
scope.$eval("a.", scope);
}).toThrowMinErr('$parse', 'syntax',
"Token 'null' is an unexpected token at column 2 of the expression [a.] starting at [.].");
expect(function() {
scope.$eval("a .", scope);
}).toThrowMinErr('$parse', 'syntax',
"Token 'null' is an unexpected token at column 3 of the expression [a .] starting at [.].");
});
it('should resolve deeply nested paths (important for CSP mode)', function() {
scope.a = {b: {c: {d: {e: {f: {g: {h: {i: {j: {k: {l: {m: {n: 'nooo!'}}}}}}}}}}}}};
expect(scope.$eval("a.b.c.d.e.f.g.h.i.j.k.l.m.n", scope)).toBe('nooo!');
});
forEach([2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 42, 99], function(pathLength) {
it('should resolve nested paths of length ' + pathLength, function() {
// Create a nested object {x2: {x3: {x4: ... {x[n]: 42} ... }}}.
var obj = 42, locals = {};
for (var i = pathLength; i >= 2; i--) {
var newObj = {};
newObj['x' + i] = obj;
obj = newObj;
}
// Assign to x1 and build path 'x1.x2.x3. ... .x[n]' to access the final value.
scope.x1 = obj;
var path = 'x1';
for (i = 2; i <= pathLength; i++) {
path += '.x' + i;
}
expect(scope.$eval(path)).toBe(42);
locals['x' + pathLength] = 'not 42';
expect(scope.$eval(path, locals)).toBe(42);
});
});
it('should be forgiving', function() {
scope.a = {b: 23};
expect(scope.$eval('b')).toBeUndefined();
expect(scope.$eval('a.x')).toBeUndefined();
expect(scope.$eval('a.b.c.d')).toBeUndefined();
});
it('should support property names that collide with native object properties', function() {
// regression
scope.watch = 1;
scope.toString = function toString() {
return "custom toString";
};
expect(scope.$eval('watch', scope)).toBe(1);
expect(scope.$eval('toString()', scope)).toBe('custom toString');
});
it('should not break if hasOwnProperty is referenced in an expression', function() {
scope.obj = { value: 1};
// By evaluating an expression that calls hasOwnProperty, the getterFnCache
// will store a property called hasOwnProperty. This is effectively:
// getterFnCache['hasOwnProperty'] = null
scope.$eval('obj.hasOwnProperty("value")');
// If we rely on this property then evaluating any expression will fail
// because it is not able to find out if obj.value is there in the cache
expect(scope.$eval('obj.value')).toBe(1);
});
it('should not break if the expression is "hasOwnProperty"', function() {
scope.fooExp = 'barVal';
// By evaluating hasOwnProperty, the $parse cache will store a getter for
// the scope's own hasOwnProperty function, which will mess up future cache look ups.
// i.e. cache['hasOwnProperty'] = function(scope) { return scope.hasOwnProperty; }
scope.$eval('hasOwnProperty');
expect(scope.$eval('fooExp')).toBe('barVal');
});
it('should evaluate grouped expressions', function() {
expect(scope.$eval("(1+2)*3")).toEqual((1+2)*3);
});
it('should evaluate assignments', function() {
expect(scope.$eval("a=12")).toEqual(12);
expect(scope.a).toEqual(12);
expect(scope.$eval("x.y.z=123;")).toEqual(123);
expect(scope.x.y.z).toEqual(123);
expect(scope.$eval("a=123; b=234")).toEqual(234);
expect(scope.a).toEqual(123);
expect(scope.b).toEqual(234);
});
it('should evaluate assignments in ternary operator', function() {
scope.$eval('a = 1 ? 2 : 3');
expect(scope.a).toBe(2);
scope.$eval('0 ? a = 2 : a = 3');
expect(scope.a).toBe(3);
scope.$eval('1 ? a = 2 : a = 3');
expect(scope.a).toBe(2);
});
it('should evaluate function call without arguments', function() {
scope['const'] = function(a, b) {return 123;};
expect(scope.$eval("const()")).toEqual(123);
});
it('should evaluate function call with arguments', function() {
scope.add = function(a, b) {
return a+b;
};
expect(scope.$eval("add(1,2)")).toEqual(3);
});
it('should evaluate function call from a return value', function() {
scope.val = 33;
scope.getter = function() { return function() { return this.val; }; };
expect(scope.$eval("getter()()")).toBe(33);
});
it('should evaluate multiplication and division', function() {
scope.taxRate = 8;
scope.subTotal = 100;
expect(scope.$eval("taxRate / 100 * subTotal")).toEqual(8);
expect(scope.$eval("subTotal * taxRate / 100")).toEqual(8);
});
it('should evaluate array', function() {
expect(scope.$eval("[]").length).toEqual(0);
expect(scope.$eval("[1, 2]").length).toEqual(2);
expect(scope.$eval("[1, 2]")[0]).toEqual(1);
expect(scope.$eval("[1, 2]")[1]).toEqual(2);
expect(scope.$eval("[1, 2,]")[1]).toEqual(2);
expect(scope.$eval("[1, 2,]").length).toEqual(2);
});
it('should evaluate array access', function() {
expect(scope.$eval("[1][0]")).toEqual(1);
expect(scope.$eval("[[1]][0][0]")).toEqual(1);
expect(scope.$eval("[].length")).toEqual(0);
expect(scope.$eval("[1, 2].length")).toEqual(2);
});
it('should evaluate object', function() {
expect(toJson(scope.$eval("{}"))).toEqual("{}");
expect(toJson(scope.$eval("{a:'b'}"))).toEqual('{"a":"b"}');
expect(toJson(scope.$eval("{'a':'b'}"))).toEqual('{"a":"b"}');
expect(toJson(scope.$eval("{\"a\":'b'}"))).toEqual('{"a":"b"}');
expect(toJson(scope.$eval("{a:'b',}"))).toEqual('{"a":"b"}');
expect(toJson(scope.$eval("{'a':'b',}"))).toEqual('{"a":"b"}');
expect(toJson(scope.$eval("{\"a\":'b',}"))).toEqual('{"a":"b"}');
});
it('should evaluate object access', function() {
expect(scope.$eval("{false:'WC', true:'CC'}[false]")).toEqual("WC");
});
it('should evaluate JSON', function() {
expect(toJson(scope.$eval("[{}]"))).toEqual("[{}]");
expect(toJson(scope.$eval("[{a:[]}, {b:1}]"))).toEqual('[{"a":[]},{"b":1}]');
});
it('should evaluate multiple statements', function() {
expect(scope.$eval("a=1;b=3;a+b")).toEqual(4);
expect(scope.$eval(";;1;;")).toEqual(1);
});
it('should evaluate object methods in correct context (this)', function() {
var C = function() {
this.a = 123;
};
C.prototype.getA = function() {
return this.a;
};
scope.obj = new C();
expect(scope.$eval("obj.getA()")).toEqual(123);
expect(scope.$eval("obj['getA']()")).toEqual(123);
});
it('should evaluate methods in correct context (this) in argument', function() {
var C = function() {
this.a = 123;
};
C.prototype.sum = function(value) {
return this.a + value;
};
C.prototype.getA = function() {
return this.a;
};
scope.obj = new C();
expect(scope.$eval("obj.sum(obj.getA())")).toEqual(246);
expect(scope.$eval("obj['sum'](obj.getA())")).toEqual(246);
});
it('should evaluate objects on scope context', function() {
scope.a = "abc";
expect(scope.$eval("{a:a}").a).toEqual("abc");
});
it('should evaluate field access on function call result', function() {
scope.a = function() {
return {name:'misko'};
};
expect(scope.$eval("a().name")).toEqual("misko");
});
it('should evaluate field access after array access', function() {
scope.items = [{}, {name:'misko'}];
expect(scope.$eval('items[1].name')).toEqual("misko");
});
it('should evaluate array assignment', function() {
scope.items = [];
expect(scope.$eval('items[1] = "abc"')).toEqual("abc");
expect(scope.$eval('items[1]')).toEqual("abc");
// Dont know how to make this work....
// expect(scope.$eval('books[1] = "moby"')).toEqual("moby");
// expect(scope.$eval('books[1]')).toEqual("moby");
});
it('should evaluate grouped filters', function() {
scope.name = 'MISKO';
expect(scope.$eval('n = (name|lowercase)')).toEqual('misko');
expect(scope.$eval('n')).toEqual('misko');
});
it('should evaluate remainder', function() {
expect(scope.$eval('1%2')).toEqual(1);
});
it('should evaluate sum with undefined', function() {
expect(scope.$eval('1+undefined')).toEqual(1);
expect(scope.$eval('undefined+1')).toEqual(1);
});
it('should throw exception on non-closed bracket', function() {
expect(function() {
scope.$eval('[].count(');
}).toThrowMinErr('$parse', 'ueoe', 'Unexpected end of expression: [].count(');
});
it('should evaluate double negation', function() {
expect(scope.$eval('true')).toBeTruthy();
expect(scope.$eval('!true')).toBeFalsy();
expect(scope.$eval('!!true')).toBeTruthy();
expect(scope.$eval('{true:"a", false:"b"}[!!true]')).toEqual('a');
});
it('should evaluate negation', function() {
/* jshint -W018 */
expect(scope.$eval("!false || true")).toEqual(!false || true);
expect(scope.$eval("!11 == 10")).toEqual(!11 == 10);
expect(scope.$eval("12/6/2")).toEqual(12/6/2);
});
it('should evaluate exclamation mark', function() {
expect(scope.$eval('suffix = "!"')).toEqual('!');
});
it('should evaluate minus', function() {
expect(scope.$eval("{a:'-'}")).toEqual({a: "-"});
});
it('should evaluate undefined', function() {
expect(scope.$eval("undefined")).not.toBeDefined();
expect(scope.$eval("a=undefined")).not.toBeDefined();
expect(scope.a).not.toBeDefined();
});
it('should allow assignment after array dereference', function() {
scope.obj = [{}];
scope.$eval('obj[0].name=1');
expect(scope.obj.name).toBeUndefined();
expect(scope.obj[0].name).toEqual(1);
});
it('should short-circuit AND operator', function() {
scope.run = function() {
throw "IT SHOULD NOT HAVE RUN";
};
expect(scope.$eval('false && run()')).toBe(false);
});
it('should short-circuit OR operator', function() {
scope.run = function() {
throw "IT SHOULD NOT HAVE RUN";
};
expect(scope.$eval('true || run()')).toBe(true);
});
it('should support method calls on primitive types', function() {
scope.empty = '';
scope.zero = 0;
scope.bool = false;
expect(scope.$eval('empty.substr(0)')).toBe('');
expect(scope.$eval('zero.toString()')).toBe('0');
expect(scope.$eval('bool.toString()')).toBe('false');
});
it('should evaluate expressions with line terminators', function() {
scope.a = "a";
scope.b = {c: "bc"};
expect(scope.$eval('a + \n b.c + \r "\td" + \t \r\n\r "\r\n\n"')).toEqual("abc\td\r\n\n");
});
describe('sandboxing', function() {
describe('Function constructor', function() {
it('should not tranverse the Function constructor in the getter', function() {
expect(function() {
scope.$eval('{}.toString.constructor');
}).toThrowMinErr(
'$parse', 'isecfn', 'Referencing Function in Angular expressions is disallowed! ' +
'Expression: {}.toString.constructor');
});
it('should not allow access to the Function prototype in the getter', function() {
expect(function() {
scope.$eval('toString.constructor.prototype');
}).toThrowMinErr(
'$parse', 'isecfn', 'Referencing Function in Angular expressions is disallowed! ' +
'Expression: toString.constructor.prototype');
});
it('should NOT allow access to Function constructor in getter', function() {
expect(function() {
scope.$eval('{}.toString.constructor("alert(1)")');
}).toThrowMinErr(
'$parse', 'isecfn', 'Referencing Function in Angular expressions is disallowed! ' +
'Expression: {}.toString.constructor("alert(1)")');
});
it('should NOT allow access to Function constructor in setter', function() {
expect(function() {
scope.$eval('{}.toString.constructor.a = 1');
}).toThrowMinErr(
'$parse', 'isecfn','Referencing Function in Angular expressions is disallowed! ' +
'Expression: {}.toString.constructor.a = 1');
expect(function() {
scope.$eval('{}.toString["constructor"]["constructor"] = 1');
}).toThrowMinErr(
'$parse', 'isecfn', 'Referencing Function in Angular expressions is disallowed! ' +
'Expression: {}.toString["constructor"]["constructor"] = 1');
scope.key1 = "const";
scope.key2 = "ructor";
expect(function() {
scope.$eval('{}.toString[key1 + key2].foo = 1');
}).toThrowMinErr(
'$parse', 'isecfn', 'Referencing Function in Angular expressions is disallowed! ' +
'Expression: {}.toString[key1 + key2].foo = 1');
expect(function() {
scope.$eval('{}.toString["constructor"]["a"] = 1');
}).toThrowMinErr(
'$parse', 'isecfn', 'Referencing Function in Angular expressions is disallowed! ' +
'Expression: {}.toString["constructor"]["a"] = 1');
scope.a = [];
expect(function() {
scope.$eval('a.toString.constructor = 1', scope);
}).toThrowMinErr(
'$parse', 'isecfn', 'Referencing Function in Angular expressions is disallowed! ' +
'Expression: a.toString.constructor');
});
it('should disallow traversing the Function object in a setter: E02', function() {
expect(function() {
// This expression by itself isn't dangerous. However, one can use this to
// automatically call an object (e.g. a Function object) when it is automatically
// toString'd/valueOf'd by setting the RHS to Function.prototype.call.
scope.$eval('hasOwnProperty.constructor.prototype.valueOf = 1');
}).toThrowMinErr(
'$parse', 'isecfn', 'Referencing Function in Angular expressions is disallowed! ' +
'Expression: hasOwnProperty.constructor.prototype.valueOf');
});
it('should disallow passing the Function object as a parameter: E03', function() {
expect(function() {
// This expression constructs a function but does not execute it. It does lead the
// way to execute it if one can get the toString/valueOf of it to call the function.
scope.$eval('["a", "alert(1)"].sort(hasOwnProperty.constructor)');
}).toThrow();
});
it('should prevent exploit E01', function() {
// This is a tracking exploit. The two individual tests, it('should … : E02') and
// it('should … : E03') test for two parts to block this exploit. This exploit works
// as follows:
//
// • Array.sort takes a comparison function and passes it 2 parameters to compare. If
// the result is non-primitive, sort then invokes valueOf() on the result.
// • The Function object conveniently accepts two string arguments so we can use this
// to construct a function. However, this doesn't do much unless we can execute it.
// • We set the valueOf property on Function.prototype to Function.prototype.call.
// This causes the function that we constructed to be executed when sort calls
// .valueOf() on the result of the comparison.
expect(function() {
scope.$eval('' +
'hasOwnProperty.constructor.prototype.valueOf=valueOf.call;' +
'["a","alert(1)"].sort(hasOwnProperty.constructor)');
}).toThrow();
});
it('should NOT allow access to Function constructor that has been aliased', function() {
scope.foo = { "bar": Function };
expect(function() {
scope.$eval('foo["bar"]');
}).toThrowMinErr(
'$parse', 'isecfn', 'Referencing Function in Angular expressions is disallowed! ' +
'Expression: foo["bar"]');
});
describe('expensiveChecks', function() {
it('should block access to window object even when aliased', inject(function($parse, $window) {
scope.foo = {w: $window};
// This isn't blocked for performance.
expect(scope.$eval($parse('foo.w'))).toBe($window);
// Event handlers use the more expensive path for better protection since they expose
// the $event object on the scope.
expect(function() {
scope.$eval($parse('foo.w', null, true));
}).toThrowMinErr(
'$parse', 'isecwindow', 'Referencing the Window in Angular expressions is disallowed! ' +
'Expression: foo.w');
}));
});
});
describe('Function prototype functions', function() {
it('should NOT allow invocation to Function.call', function() {
scope.fn = Function.prototype.call;
expect(function() {
scope.$eval('$eval.call()');
}).toThrowMinErr(
'$parse', 'isecff', 'Referencing call, apply or bind in Angular expressions is disallowed! ' +
'Expression: $eval.call()');
expect(function() {
scope.$eval('fn()');
}).toThrowMinErr(
'$parse', 'isecff', 'Referencing call, apply or bind in Angular expressions is disallowed! ' +
'Expression: fn()');
});
it('should NOT allow invocation to Function.apply', function() {
scope.apply = Function.prototype.apply;
expect(function() {
scope.$eval('$eval.apply()');
}).toThrowMinErr(
'$parse', 'isecff', 'Referencing call, apply or bind in Angular expressions is disallowed! ' +
'Expression: $eval.apply()');
expect(function() {
scope.$eval('apply()');
}).toThrowMinErr(
'$parse', 'isecff', 'Referencing call, apply or bind in Angular expressions is disallowed! ' +
'Expression: apply()');
});
it('should NOT allow invocation to Function.bind', function() {
scope.bind = Function.prototype.bind;
expect(function() {
scope.$eval('$eval.bind()');
}).toThrowMinErr(
'$parse', 'isecff', 'Referencing call, apply or bind in Angular expressions is disallowed! ' +
'Expression: $eval.bind()');
expect(function() {
scope.$eval('bind()');
}).toThrowMinErr(
'$parse', 'isecff', 'Referencing call, apply or bind in Angular expressions is disallowed! ' +
'Expression: bind()');
});
});
describe('Object constructor', function() {
it('should NOT allow access to Object constructor that has been aliased', function() {
scope.foo = { "bar": Object };
expect(function() {
scope.$eval('foo.bar.keys(foo)');
}).toThrowMinErr(
'$parse', 'isecobj', 'Referencing Object in Angular expressions is disallowed! ' +
'Expression: foo.bar.keys(foo)');
expect(function() {
scope.$eval('foo["bar"]["keys"](foo)');
}).toThrowMinErr(
'$parse', 'isecobj', 'Referencing Object in Angular expressions is disallowed! ' +
'Expression: foo["bar"]["keys"](foo)');
});
});
describe('Window and $element/node', function() {
it('should NOT allow access to the Window or DOM when indexing', inject(function($window, $document) {
scope.wrap = {w: $window, d: $document};
expect(function() {
scope.$eval('wrap["w"]', scope);
}).toThrowMinErr(
'$parse', 'isecwindow', 'Referencing the Window in Angular expressions is ' +
'disallowed! Expression: wrap["w"]');
expect(function() {
scope.$eval('wrap["d"]', scope);
}).toThrowMinErr(
'$parse', 'isecdom', 'Referencing DOM nodes in Angular expressions is ' +
'disallowed! Expression: wrap["d"]');
}));
it('should NOT allow access to the Window or DOM returned from a function', inject(function($window, $document) {
scope.getWin = valueFn($window);
scope.getDoc = valueFn($document);
expect(function() {
scope.$eval('getWin()', scope);
}).toThrowMinErr(
'$parse', 'isecwindow', 'Referencing the Window in Angular expressions is ' +
'disallowed! Expression: getWin()');
expect(function() {
scope.$eval('getDoc()', scope);
}).toThrowMinErr(
'$parse', 'isecdom', 'Referencing DOM nodes in Angular expressions is ' +
'disallowed! Expression: getDoc()');
}));
it('should NOT allow calling functions on Window or DOM', inject(function($window, $document) {
scope.a = {b: { win: $window, doc: $document }};
expect(function() {
scope.$eval('a.b.win.alert(1)', scope);
}).toThrowMinErr(
'$parse', 'isecwindow', 'Referencing the Window in Angular expressions is ' +
'disallowed! Expression: a.b.win.alert(1)');
expect(function() {
scope.$eval('a.b.doc.on("click")', scope);
}).toThrowMinErr(
'$parse', 'isecdom', 'Referencing DOM nodes in Angular expressions is ' +
'disallowed! Expression: a.b.doc.on("click")');
}));
// Issue #4805
it('should NOT throw isecdom when referencing a Backbone Collection', function() {
// Backbone stuff is sort of hard to mock, if you have a better way of doing this,
// please fix this.
var fakeBackboneCollection = {
children: [{}, {}, {}],
find: function() {},
on: function() {},
off: function() {},
bind: function() {}
};
scope.backbone = fakeBackboneCollection;
expect(function() { scope.$eval('backbone'); }).not.toThrow();
});
it('should NOT throw isecdom when referencing an array with node properties', function() {
var array = [1,2,3];
array.on = array.attr = array.prop = array.bind = true;
scope.array = array;
expect(function() { scope.$eval('array'); }).not.toThrow();
});
});
describe('Disallowed fields', function() {
it('should NOT allow access or invocation of __defineGetter__', function() {
expect(function() {
scope.$eval('{}.__defineGetter__');
}).toThrowMinErr('$parse', 'isecfld');
expect(function() {
scope.$eval('{}.__defineGetter__("a", "".charAt)');
}).toThrowMinErr('$parse', 'isecfld');
expect(function() {
scope.$eval('{}["__defineGetter__"]');
}).toThrowMinErr('$parse', 'isecfld');
expect(function() {
scope.$eval('{}["__defineGetter__"]("a", "".charAt)');
}).toThrowMinErr('$parse', 'isecfld');
scope.a = "__define";
scope.b = "Getter__";
expect(function() {
scope.$eval('{}[a + b]');
}).toThrowMinErr('$parse', 'isecfld');
expect(function() {
scope.$eval('{}[a + b]("a", "".charAt)');
}).toThrowMinErr('$parse', 'isecfld');
});
it('should NOT allow access or invocation of __defineSetter__', function() {
expect(function() {
scope.$eval('{}.__defineSetter__');
}).toThrowMinErr('$parse', 'isecfld');
expect(function() {
scope.$eval('{}.__defineSetter__("a", "".charAt)');
}).toThrowMinErr('$parse', 'isecfld');
expect(function() {
scope.$eval('{}["__defineSetter__"]');
}).toThrowMinErr('$parse', 'isecfld');
expect(function() {
scope.$eval('{}["__defineSetter__"]("a", "".charAt)');
}).toThrowMinErr('$parse', 'isecfld');
scope.a = "__define";
scope.b = "Setter__";
expect(function() {
scope.$eval('{}[a + b]');
}).toThrowMinErr('$parse', 'isecfld');
expect(function() {
scope.$eval('{}[a + b]("a", "".charAt)');
}).toThrowMinErr('$parse', 'isecfld');
});
it('should NOT allow access or invocation of __lookupGetter__', function() {
expect(function() {
scope.$eval('{}.__lookupGetter__');
}).toThrowMinErr('$parse', 'isecfld');
expect(function() {
scope.$eval('{}.__lookupGetter__("a")');
}).toThrowMinErr('$parse', 'isecfld');
expect(function() {
scope.$eval('{}["__lookupGetter__"]');
}).toThrowMinErr('$parse', 'isecfld');
expect(function() {
scope.$eval('{}["__lookupGetter__"]("a")');
}).toThrowMinErr('$parse', 'isecfld');
scope.a = "__lookup";
scope.b = "Getter__";
expect(function() {
scope.$eval('{}[a + b]');
}).toThrowMinErr('$parse', 'isecfld');
expect(function() {
scope.$eval('{}[a + b]("a")');
}).toThrowMinErr('$parse', 'isecfld');
});
it('should NOT allow access or invocation of __lookupSetter__', function() {
expect(function() {
scope.$eval('{}.__lookupSetter__');
}).toThrowMinErr('$parse', 'isecfld');
expect(function() {
scope.$eval('{}.__lookupSetter__("a")');
}).toThrowMinErr('$parse', 'isecfld');
expect(function() {
scope.$eval('{}["__lookupSetter__"]');
}).toThrowMinErr('$parse', 'isecfld');
expect(function() {
scope.$eval('{}["__lookupSetter__"]("a")');
}).toThrowMinErr('$parse', 'isecfld');
scope.a = "__lookup";
scope.b = "Setter__";
expect(function() {
scope.$eval('{}[a + b]');
}).toThrowMinErr('$parse', 'isecfld');
expect(function() {
scope.$eval('{}[a + b]("a")');
}).toThrowMinErr('$parse', 'isecfld');
});
it('should NOT allow access to __proto__', function() {
expect(function() {
scope.$eval('{}.__proto__');
}).toThrowMinErr('$parse', 'isecfld');
expect(function() {
scope.$eval('{}.__proto__.foo = 1');
}).toThrowMinErr('$parse', 'isecfld');
expect(function() {
scope.$eval('{}["__proto__"]');
}).toThrowMinErr('$parse', 'isecfld');
expect(function() {
scope.$eval('{}["__proto__"].foo = 1');
}).toThrowMinErr('$parse', 'isecfld');
scope.a = "__pro";
scope.b = "to__";
expect(function() {
scope.$eval('{}[a + b]');
}).toThrowMinErr('$parse', 'isecfld');
expect(function() {
scope.$eval('{}[a + b].foo = 1');
}).toThrowMinErr('$parse', 'isecfld');
});
});
it('should prevent the exploit', function() {
expect(function() {
scope.$eval('' +
' "".sub.call.call(' +
'({})["constructor"].getOwnPropertyDescriptor("".sub.__proto__, "constructor").value,' +
'null,' +
'"alert(1)"' +
')()' +
'');
}).toThrow();
});
});
it('should call the function from the received instance and not from a new one', function() {
var n = 0;
scope.fn = function() {
var c = n++;
return { c: c, anotherFn: function() { return this.c == c; } };
};
expect(scope.$eval('fn().anotherFn()')).toBe(true);
});
it('should call the function once when it is part of the context', function() {
var count = 0;
scope.fn = function() {
count++;
return { anotherFn: function() { return "lucas"; } };
};
expect(scope.$eval('fn().anotherFn()')).toBe('lucas');
expect(count).toBe(1);
});
it('should call the function once when it is not part of the context', function() {
var count = 0;
scope.fn = function() {
count++;
return function() { return 'lucas'; };
};
expect(scope.$eval('fn()()')).toBe('lucas');
expect(count).toBe(1);
});
it('should call the function once when it is part of the context on assignments', function() {
var count = 0;
var element = {};
scope.fn = function() {
count++;
return element;
};
expect(scope.$eval('fn().name = "lucas"')).toBe('lucas');
expect(element.name).toBe('lucas');
expect(count).toBe(1);
});
it('should call the function once when it is part of the context on array lookups', function() {
var count = 0;
var element = [];
scope.fn = function() {
count++;
return element;
};
expect(scope.$eval('fn()[0] = "lucas"')).toBe('lucas');
expect(element[0]).toBe('lucas');
expect(count).toBe(1);
});
it('should call the function once when it is part of the context on array lookup function', function() {
var count = 0;
var element = [{anotherFn: function() { return 'lucas';} }];
scope.fn = function() {
count++;
return element;
};
expect(scope.$eval('fn()[0].anotherFn()')).toBe('lucas');
expect(count).toBe(1);
});
it('should call the function once when it is part of the context on property lookup function', function() {
var count = 0;
var element = {name: {anotherFn: function() { return 'lucas';} } };
scope.fn = function() {
count++;
return element;
};
expect(scope.$eval('fn().name.anotherFn()')).toBe('lucas');
expect(count).toBe(1);
});
it('should call the function once when it is part of a sub-expression', function() {
var count = 0;
scope.element = [{}];
scope.fn = function() {
count++;
return 0;
};
expect(scope.$eval('element[fn()].name = "lucas"')).toBe('lucas');
expect(scope.element[0].name).toBe('lucas');
expect(count).toBe(1);
});
describe('assignable', function() {
it('should expose assignment function', inject(function($parse) {
var fn = $parse('a');
expect(fn.assign).toBeTruthy();
var scope = {};
fn.assign(scope, 123);
expect(scope).toEqual({a:123});
}));
it('should expose working assignment function for expressions ending with brackets', inject(function($parse) {
var fn = $parse('a.b["c"]');
expect(fn.assign).toBeTruthy();
var scope = {};
fn.assign(scope, 123);
expect(scope.a.b.c).toEqual(123);
}));
it('should expose working assignment function for expressions with brackets in the middle', inject(function($parse) {
var fn = $parse('a["b"].c');
expect(fn.assign).toBeTruthy();
var scope = {};
fn.assign(scope, 123);
expect(scope.a.b.c).toEqual(123);
}));
});
describe('one-time binding', function() {
it('should always use the cache', inject(function($parse) {
expect($parse('foo')).toBe($parse('foo'));
expect($parse('::foo')).toBe($parse('::foo'));
}));
it('should not affect calling the parseFn directly', inject(function($parse, $rootScope) {
var fn = $parse('::foo');
$rootScope.$watch(fn);
$rootScope.foo = 'bar';
expect($rootScope.$$watchers.length).toBe(1);
expect(fn($rootScope)).toEqual('bar');
$rootScope.$digest();
expect($rootScope.$$watchers.length).toBe(0);
expect(fn($rootScope)).toEqual('bar');
$rootScope.foo = 'man';
$rootScope.$digest();
expect($rootScope.$$watchers.length).toBe(0);
expect(fn($rootScope)).toEqual('man');
$rootScope.foo = 'shell';
$rootScope.$digest();
expect($rootScope.$$watchers.length).toBe(0);
expect(fn($rootScope)).toEqual('shell');
}));
it('should stay stable once the value defined', inject(function($parse, $rootScope, log) {
var fn = $parse('::foo');
$rootScope.$watch(fn, function(value, old) { if (value !== old) log(value); });
$rootScope.$digest();
expect($rootScope.$$watchers.length).toBe(1);
$rootScope.foo = 'bar';
$rootScope.$digest();
expect($rootScope.$$watchers.length).toBe(0);
expect(log).toEqual('bar');
log.reset();
$rootScope.foo = 'man';
$rootScope.$digest();
expect($rootScope.$$watchers.length).toBe(0);
expect(log).toEqual('');
}));
it('should have a stable value if at the end of a $digest it has a defined value', inject(function($parse, $rootScope, log) {
var fn = $parse('::foo');
$rootScope.$watch(fn, function(value, old) { if (value !== old) log(value); });
$rootScope.$watch('foo', function() { if ($rootScope.foo === 'bar') {$rootScope.foo = undefined; } });
$rootScope.foo = 'bar';
$rootScope.$digest();
expect($rootScope.$$watchers.length).toBe(2);
expect(log).toEqual('');
$rootScope.foo = 'man';
$rootScope.$digest();
expect($rootScope.$$watchers.length).toBe(1);
expect(log).toEqual('; man');
$rootScope.foo = 'shell';
$rootScope.$digest();
expect($rootScope.$$watchers.length).toBe(1);
expect(log).toEqual('; man');
}));
it('should not throw if the stable value is `null`', inject(function($parse, $rootScope) {
var fn = $parse('::foo');
$rootScope.$watch(fn);
$rootScope.foo = null;
$rootScope.$digest();
$rootScope.foo = 'foo';
$rootScope.$digest();
expect(fn()).toEqual(null);
}));
describe('literal expressions', function() {
it('should only become stable when all the properties of an object have defined values', inject(function($parse, $rootScope, log) {
var fn = $parse('::{foo: foo, bar: bar}');
$rootScope.$watch(fn, function(value) { log(value); }, true);
expect(log.empty()).toEqual([]);
expect($rootScope.$$watchers.length).toBe(1);
$rootScope.$digest();
expect($rootScope.$$watchers.length).toBe(1);
expect(log.empty()).toEqual([{foo: undefined, bar: undefined}]);
$rootScope.foo = 'foo';
$rootScope.$digest();
expect($rootScope.$$watchers.length).toBe(1);
expect(log.empty()).toEqual([{foo: 'foo', bar: undefined}]);
$rootScope.foo = 'foobar';
$rootScope.bar = 'bar';
$rootScope.$digest();
expect($rootScope.$$watchers.length).toBe(0);
expect(log.empty()).toEqual([{foo: 'foobar', bar: 'bar'}]);
$rootScope.foo = 'baz';
$rootScope.$digest();
expect($rootScope.$$watchers.length).toBe(0);
expect(log.empty()).toEqual([]);
}));
it('should only become stable when all the elements of an array have defined values', inject(function($parse, $rootScope, log) {
var fn = $parse('::[foo,bar]');
$rootScope.$watch(fn, function(value) { log(value); }, true);
expect(log.empty()).toEqual([]);
expect($rootScope.$$watchers.length).toBe(1);
$rootScope.$digest();
expect($rootScope.$$watchers.length).toBe(1);
expect(log.empty()).toEqual([[undefined, undefined]]);
$rootScope.foo = 'foo';
$rootScope.$digest();
expect($rootScope.$$watchers.length).toBe(1);
expect(log.empty()).toEqual([['foo', undefined]]);
$rootScope.foo = 'foobar';
$rootScope.bar = 'bar';
$rootScope.$digest();
expect($rootScope.$$watchers.length).toBe(0);
expect(log.empty()).toEqual([['foobar', 'bar']]);
$rootScope.foo = 'baz';
$rootScope.$digest();
expect($rootScope.$$watchers.length).toBe(0);
expect(log.empty()).toEqual([]);
}));
it('should only become stable when all the elements of an array have defined values at the end of a $digest', inject(function($parse, $rootScope, log) {
var fn = $parse('::[foo]');
$rootScope.$watch(fn, function(value) { log(value); }, true);
$rootScope.$watch('foo', function() { if ($rootScope.foo === 'bar') {$rootScope.foo = undefined; } });
$rootScope.foo = 'bar';
$rootScope.$digest();
expect($rootScope.$$watchers.length).toBe(2);
expect(log.empty()).toEqual([['bar'], [undefined]]);
$rootScope.foo = 'baz';
$rootScope.$digest();
expect($rootScope.$$watchers.length).toBe(1);
expect(log.empty()).toEqual([['baz']]);
$rootScope.bar = 'qux';
$rootScope.$digest();
expect($rootScope.$$watchers.length).toBe(1);
expect(log).toEqual([]);
}));
});
});
describe('watched $parse expressions', function() {
it('should respect short-circuiting AND if it could have side effects', function() {
var bCalled = 0;
scope.b = function() { bCalled++; };
scope.$watch("a && b()");
scope.$digest();
scope.$digest();
expect(bCalled).toBe(0);
scope.a = true;
scope.$digest();
expect(bCalled).toBe(1);
scope.$digest();
expect(bCalled).toBe(2);
});
it('should respect short-circuiting OR if it could have side effects', function() {
var bCalled = false;
scope.b = function() { bCalled = true; };
scope.$watch("a || b()");
scope.$digest();
expect(bCalled).toBe(true);
bCalled = false;
scope.a = true;
scope.$digest();
expect(bCalled).toBe(false);
});
it('should respect the branching ternary operator if it could have side effects', function() {
var bCalled = false;
scope.b = function() { bCalled = true; };
scope.$watch("a ? b() : 1");
scope.$digest();
expect(bCalled).toBe(false);
scope.a = true;
scope.$digest();
expect(bCalled).toBe(true);
});
it('should not invoke filters unless the input/arguments change', function() {
var filterCalled = false;
$filterProvider.register('foo', valueFn(function(input) {
filterCalled = true;
return input;
}));
scope.$watch("a | foo:b:1");
scope.a = 0;
scope.$digest();
expect(filterCalled).toBe(true);
filterCalled = false;
scope.$digest();
expect(filterCalled).toBe(false);
scope.a++;
scope.$digest();
expect(filterCalled).toBe(true);
});
it('should invoke filters if they are marked as having $stateful', function() {
var filterCalled = false;
$filterProvider.register('foo', valueFn(extend(function(input) {
filterCalled = true;
return input;
}, {$stateful: true})));
scope.$watch("a | foo:b:1");
scope.a = 0;
scope.$digest();
expect(filterCalled).toBe(true);
filterCalled = false;
scope.$digest();
expect(filterCalled).toBe(true);
});
it('should not invoke interceptorFns unless the input changes', inject(function($parse) {
var called = false;
function interceptor(v) {
called = true;
return v;
}
scope.$watch($parse("a", interceptor));
scope.a = scope.b = 0;
scope.$digest();
expect(called).toBe(true);
called = false;
scope.$digest();
expect(called).toBe(false);
scope.a++;
scope.$digest();
expect(called).toBe(true);
}));
it('should treat filters with constant input as constants', inject(function($parse) {
var filterCalls = 0;
$filterProvider.register('foo', valueFn(function(input) {
filterCalls++;
return input;
}));
var parsed = $parse('{x: 1} | foo:1');
expect(parsed.constant).toBe(true);
var watcherCalls = 0;
scope.$watch(parsed, function(input) {
expect(input).toEqual({x:1});
watcherCalls++;
});
scope.$digest();
expect(filterCalls).toBe(1);
expect(watcherCalls).toBe(1);
scope.$digest();
expect(filterCalls).toBe(1);
expect(watcherCalls).toBe(1);
}));
it("should always reevaluate filters with non-primitive input that doesn't support valueOf()",
inject(function($parse) {
var filterCalls = 0;
$filterProvider.register('foo', valueFn(function(input) {
filterCalls++;
return input;
}));
var parsed = $parse('obj | foo');
var obj = scope.obj = {};
var watcherCalls = 0;
scope.$watch(parsed, function(input) {
expect(input).toBe(obj);
watcherCalls++;
});
scope.$digest();
expect(filterCalls).toBe(2);
expect(watcherCalls).toBe(1);
scope.$digest();
expect(filterCalls).toBe(3);
expect(watcherCalls).toBe(1);
}));
it("should always reevaluate filters with non-primitive input created with null prototype",
inject(function($parse) {
var filterCalls = 0;
$filterProvider.register('foo', valueFn(function(input) {
filterCalls++;
return input;
}));
var parsed = $parse('obj | foo');
var obj = scope.obj = Object.create(null);
var watcherCalls = 0;
scope.$watch(parsed, function(input) {
expect(input).toBe(obj);
watcherCalls++;
});
scope.$digest();
expect(filterCalls).toBe(2);
expect(watcherCalls).toBe(1);
scope.$digest();
expect(filterCalls).toBe(3);
expect(watcherCalls).toBe(1);
}));
it("should not reevaluate filters with non-primitive input that does support valueOf()",
inject(function($parse) {
var filterCalls = 0;
$filterProvider.register('foo', valueFn(function(input) {
filterCalls++;
return input;
}));
var parsed = $parse('date | foo');
var date = scope.date = new Date();
var watcherCalls = 0;
scope.$watch(parsed, function(input) {
expect(input).toBe(date);
watcherCalls++;
});
scope.$digest();
expect(filterCalls).toBe(1);
expect(watcherCalls).toBe(1);
scope.$digest();
expect(filterCalls).toBe(1);
expect(watcherCalls).toBe(1);
}));
it("should reevaluate filters with non-primitive input that does support valueOf() when" +
"valueOf() value changes", inject(function($parse) {
var filterCalls = 0;
$filterProvider.register('foo', valueFn(function(input) {
filterCalls++;
return input;
}));
var parsed = $parse('date | foo');
var date = scope.date = new Date();
var watcherCalls = 0;
scope.$watch(parsed, function(input) {
expect(input).toBe(date);
watcherCalls++;
});
scope.$digest();
expect(filterCalls).toBe(1);
expect(watcherCalls).toBe(1);
date.setYear(1901);
scope.$digest();
expect(filterCalls).toBe(2);
expect(watcherCalls).toBe(1);
}));
it('should invoke interceptorFns if they are flagged as having $stateful',
inject(function($parse) {
var called = false;
function interceptor() {
called = true;
}
interceptor.$stateful = true;
scope.$watch($parse("a", interceptor));
scope.a = 0;
scope.$digest();
expect(called).toBe(true);
called = false;
scope.$digest();
expect(called).toBe(true);
scope.a++;
called = false;
scope.$digest();
expect(called).toBe(true);
}));
});
describe('locals', function() {
it('should expose local variables', inject(function($parse) {
expect($parse('a')({a: 0}, {a: 1})).toEqual(1);
expect($parse('add(a,b)')({b: 1, add: function(a, b) { return a + b; }}, {a: 2})).toEqual(3);
}));
it('should expose traverse locals', inject(function($parse) {
expect($parse('a.b')({a: {b: 0}}, {a: {b:1}})).toEqual(1);
expect($parse('a.b')({a: null}, {a: {b:1}})).toEqual(1);
expect($parse('a.b')({a: {b: 0}}, {a: null})).toEqual(undefined);
expect($parse('a.b.c')({a: null}, {a: {b: {c: 1}}})).toEqual(1);
}));
it('should not use locals to resolve object properties', inject(function($parse) {
expect($parse('a[0].b')({a: [{b: 'scope'}]}, {b: 'locals'})).toBe('scope');
expect($parse('a[0]["b"]')({a: [{b: 'scope'}]}, {b: 'locals'})).toBe('scope');
expect($parse('a[0][0].b')({a: [[{b: 'scope'}]]}, {b: 'locals'})).toBe('scope');
expect($parse('a[0].b.c')({a: [{b: {c: 'scope'}}] }, {b: {c: 'locals'} })).toBe('scope');
}));
});
describe('literal', function() {
it('should mark scalar value expressions as literal', inject(function($parse) {
expect($parse('0').literal).toBe(true);
expect($parse('"hello"').literal).toBe(true);
expect($parse('true').literal).toBe(true);
expect($parse('false').literal).toBe(true);
expect($parse('null').literal).toBe(true);
expect($parse('undefined').literal).toBe(true);
}));
it('should mark array expressions as literal', inject(function($parse) {
expect($parse('[]').literal).toBe(true);
expect($parse('[1, 2, 3]').literal).toBe(true);
expect($parse('[1, identifier]').literal).toBe(true);
}));
it('should mark object expressions as literal', inject(function($parse) {
expect($parse('{}').literal).toBe(true);
expect($parse('{x: 1}').literal).toBe(true);
expect($parse('{foo: bar}').literal).toBe(true);
}));
it('should not mark function calls or operator expressions as literal', inject(function($parse) {
expect($parse('1 + 1').literal).toBe(false);
expect($parse('call()').literal).toBe(false);
expect($parse('[].length').literal).toBe(false);
}));
});
describe('constant', function() {
it('should mark scalar value expressions as constant', inject(function($parse) {
expect($parse('12.3').constant).toBe(true);
expect($parse('"string"').constant).toBe(true);
expect($parse('true').constant).toBe(true);
expect($parse('false').constant).toBe(true);
expect($parse('null').constant).toBe(true);
expect($parse('undefined').constant).toBe(true);
}));
it('should mark arrays as constant if they only contain constant elements', inject(function($parse) {
expect($parse('[]').constant).toBe(true);
expect($parse('[1, 2, 3]').constant).toBe(true);
expect($parse('["string", null]').constant).toBe(true);
expect($parse('[[]]').constant).toBe(true);
expect($parse('[1, [2, 3], {4: 5}]').constant).toBe(true);
}));
it('should not mark arrays as constant if they contain any non-constant elements', inject(function($parse) {
expect($parse('[foo]').constant).toBe(false);
expect($parse('[x + 1]').constant).toBe(false);
expect($parse('[bar[0]]').constant).toBe(false);
}));
it('should mark complex expressions involving constant values as constant', inject(function($parse) {
expect($parse('!true').constant).toBe(true);
expect($parse('-42').constant).toBe(true);
expect($parse('1 - 1').constant).toBe(true);
expect($parse('"foo" + "bar"').constant).toBe(true);
expect($parse('5 != null').constant).toBe(true);
expect($parse('{standard: 4/3, wide: 16/9}').constant).toBe(true);
}));
it('should not mark any expression involving variables or function calls as constant', inject(function($parse) {
expect($parse('true.toString()').constant).toBe(false);
expect($parse('foo(1, 2, 3)').constant).toBe(false);
expect($parse('"name" + id').constant).toBe(false);
}));
});
describe('null/undefined in expressions', function() {
// simpleGetterFn1
it('should return null for `a` where `a` is null', inject(function($rootScope) {
$rootScope.a = null;
expect($rootScope.$eval('a')).toBe(null);
}));
it('should return undefined for `a` where `a` is undefined', inject(function($rootScope) {
expect($rootScope.$eval('a')).toBeUndefined();
}));
// simpleGetterFn2
it('should return undefined for properties of `null` constant', inject(function($rootScope) {
expect($rootScope.$eval('null.a')).toBeUndefined();
}));
it('should return undefined for properties of `null` values', inject(function($rootScope) {
$rootScope.a = null;
expect($rootScope.$eval('a.b')).toBeUndefined();
}));
it('should return null for `a.b` where `b` is null', inject(function($rootScope) {
$rootScope.a = { b: null };
expect($rootScope.$eval('a.b')).toBe(null);
}));
// cspSafeGetter && pathKeys.length < 6 || pathKeys.length > 2
it('should return null for `a.b.c.d.e` where `e` is null', inject(function($rootScope) {
$rootScope.a = { b: { c: { d: { e: null } } } };
expect($rootScope.$eval('a.b.c.d.e')).toBe(null);
}));
it('should return undefined for `a.b.c.d.e` where `d` is null', inject(function($rootScope) {
$rootScope.a = { b: { c: { d: null } } };
expect($rootScope.$eval('a.b.c.d.e')).toBeUndefined();
}));
// cspSafeGetter || pathKeys.length > 6
it('should return null for `a.b.c.d.e.f.g` where `g` is null', inject(function($rootScope) {
$rootScope.a = { b: { c: { d: { e: { f: { g: null } } } } } };
expect($rootScope.$eval('a.b.c.d.e.f.g')).toBe(null);
}));
it('should return undefined for `a.b.c.d.e.f.g` where `f` is null', inject(function($rootScope) {
$rootScope.a = { b: { c: { d: { e: { f: null } } } } };
expect($rootScope.$eval('a.b.c.d.e.f.g')).toBeUndefined();
}));
it('should return undefined if the return value of a function invocation is undefined',
inject(function($rootScope) {
$rootScope.fn = function() {};
expect($rootScope.$eval('fn()')).toBeUndefined();
}));
it('should ignore undefined values when doing addition/concatenation',
inject(function($rootScope) {
$rootScope.fn = function() {};
expect($rootScope.$eval('foo + "bar" + fn()')).toBe('bar');
}));
});
});
});
});
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