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parseSpec.js
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'use strict';
describe('parser', function() {
describe('lexer', function() {
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 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(map(tokens, function(t) { return t.text;})).toEqual(['a', '(', ')']);
});
it('should tokenize method invocation', function() {
var tokens = lex("a.b.c (d) - e.f()");
expect(map(tokens, 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.$eval("0.5E-10")).toEqual(0.5E-10);
tokens = lex("0.5E+10");
expect(tokens[0].text).toEqual(0.5E+10);
}));
it('should throws exception for invalid exponent', function() {
expect(function() {
lex("0.5E-");
}).toThrow(new Error('[$parse:lexerr] Lexer Error: Invalid exponent at column 4 in expression [0.5E-].'));
expect(function() {
lex("0.5E-A");
}).toThrow(new Error('[$parse:lexerr] Lexer Error: Invalid exponent at column 4 in expression [0.5E-A].'));
});
it('should tokenize number starting with a dot', function() {
var tokens = lex(".5");
expect(tokens[0].text).toEqual(0.5);
});
it('should throw error on invalid unicode', function() {
expect(function() {
lex("'\\u1''bla'");
}).toThrow(new Error("[$parse:lexerr] Lexer Error: Invalid unicode escape [\\u1''b] at column 2 in expression ['\\u1''bla']."));
});
});
var $filterProvider, scope;
beforeEach(module(['$filterProvider', function (filterProvider) {
$filterProvider = filterProvider;
}]));
forEach([true, false], function(cspEnabled) {
describe('csp ' + cspEnabled, function() {
beforeEach(inject(function ($rootScope, $sniffer) {
scope = $rootScope;
$sniffer.csp = cspEnabled;
getterFnCache = {}; // clear cache
}));
it('should parse expressions', function() {
expect(scope.$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() {
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");
}).toThrow(new Error("[$injector:unpr] Unknown provider: nonexistentFilterProvider <- nonexistentFilter"));
scope.offset = 3;
expect(scope.$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 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.$eval("a.b.c.d.e.f.g.h.i.j.k.l.m.n", scope)).toBe('nooo!');
});
it('should be forgiving', function() {
scope.a = {b: 23};
expect(scope.$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 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 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.$eval("[1, 2]")[1]).toEqual(2);
});
it('should evaluate array access', function() {
expect(scope.$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.$eval("{\"a\":'b'}"))).toEqual('{"a":"b"}');
});
it('should evaluate object access', function() {
expect(scope.$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.$eval('[].count(');
}).toThrow('[$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() {
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.$eval('bool.toString()')).toBe('false');
});
describe('sandboxing', function() {
it('should NOT allow access to Function constructor in getter', function() {
expect(function() {
scope.$eval('{}.toString.constructor');
}).toThrow(new Error(
'[$parse:isecfld] Referencing "constructor" field in Angular expressions is disallowed! ' +
'Expression: {}.toString.constructor'));
expect(function() {
scope.$eval('{}.toString.constructor("alert(1)")');
}).toThrow(new Error(
'[$parse:isecfld] Referencing "constructor" field in Angular expressions is disallowed! ' +
'Expression: {}.toString.constructor("alert(1)")'));
expect(function() {
scope.$eval('[].toString.constructor.foo');
}).toThrow(new Error(
'[$parse:isecfld] Referencing "constructor" field in Angular expressions is disallowed! ' +
'Expression: [].toString.constructor.foo'));
expect(function() {
scope.$eval('{}.toString["constructor"]');
}).toThrow(new Error(
'[$parse:isecfn] Referencing Function in Angular expressions is disallowed! ' +
'Expression: {}.toString["constructor"]'));
expect(function() {
scope.$eval('{}["toString"]["constructor"]');
}).toThrow(new Error(
'[$parse:isecfn] Referencing Function in Angular expressions is disallowed! ' +
'Expression: {}["toString"]["constructor"]'));
scope.a = [];
expect(function() {
scope.$eval('a.toString.constructor', scope);
}).toThrow(new Error(
'[$parse:isecfld] Referencing "constructor" field in Angular expressions is disallowed! ' +
'Expression: a.toString.constructor'));
expect(function() {
scope.$eval('a.toString["constructor"]', scope);
}).toThrow(new Error(
'[$parse:isecfn] Referencing Function in Angular expressions is disallowed! ' +
'Expression: a.toString["constructor"]'));
});
it('should NOT allow access to Function constructor in setter', function() {
expect(function() {
scope.$eval('{}.toString.constructor = 1');
}).toThrow(new Error(
'[$parse:isecfld] Referencing "constructor" field in Angular expressions is disallowed! ' +
'Expression: {}.toString.constructor = 1'));
expect(function() {
scope.$eval('{}.toString.constructor.a = 1');
}).toThrow(new Error(
'[$parse:isecfld] Referencing "constructor" field in Angular expressions is disallowed! ' +
'Expression: {}.toString.constructor.a = 1'));
expect(function() {
scope.$eval('{}.toString["constructor"]["constructor"] = 1');
}).toThrow(new Error(
'[$parse:isecfn] Referencing Function in Angular expressions is disallowed! ' +
'Expression: {}.toString["constructor"]["constructor"] = 1'));
scope.key1 = "const";
scope.key2 = "ructor";
expect(function() {
scope.$eval('{}.toString[key1 + key2].foo = 1');
}).toThrow(new Error(
'[$parse:isecfn] Referencing Function in Angular expressions is disallowed! ' +
'Expression: {}.toString[key1 + key2].foo = 1'));
expect(function() {
scope.$eval('{}.toString["constructor"]["a"] = 1');
}).toThrow(new Error(
'[$parse:isecfn] Referencing Function in Angular expressions is disallowed! ' +
'Expression: {}.toString["constructor"]["a"] = 1'));
scope.a = [];
expect(function() {
scope.$eval('a.toString.constructor = 1', scope);
}).toThrow(new Error(
'[$parse:isecfld] Referencing "constructor" field in Angular expressions is disallowed! ' +
'Expression: a.toString.constructor = 1'));
});
it('should NOT allow access to Function constructor that has been aliased', function() {
scope.foo = { "bar": Function };
expect(function() {
scope.$eval('foo["bar"]');
}).toThrow(new Error(
'[$parse:isecfn] Referencing Function in Angular expressions is disallowed! ' +
'Expression: foo["bar"]'));
});
});
describe('overriding constructor', function() {
it('should evaluate grouped expressions', function() {
scope.foo = function foo() {
return "foo";
};
// When not overridden, access should be restricted both by the dot operator and by the
// index operator.
expect(function() {
scope.$eval('foo.constructor()', scope)
}).toThrow(new Error(
'[$parse:isecfld] Referencing "constructor" field in Angular expressions is disallowed! ' +
'Expression: foo.constructor()'));
expect(function() {
scope.$eval('foo["constructor"]()', scope)
}).toThrow(new Error(
'[$parse:isecfn] Referencing Function in Angular expressions is disallowed! ' +
'Expression: foo["constructor"]()'));
// User defined value assigned to constructor.
scope.foo.constructor = function constructor() {
return "custom constructor";
}
// Dot operator should still block it.
expect(function() {
scope.$eval('foo.constructor()', scope)
}).toThrow(new Error(
'[$parse:isecfld] Referencing "constructor" field in Angular expressions is disallowed! ' +
'Expression: foo.constructor()'));
// However, the index operator should allow it.
expect(scope.$eval('foo["constructor"]()', scope)).toBe('custom constructor');
});
});
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.$eval('fn()()')).toBe('lucas');
expect(count).toBe(1);
});
it('should call the function once when it is not part of the context', function() {
var count = 0;
scope.fn = function() {
count++;
return function() { return 'lucas'; };
};
expect(scope.$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.$eval('fn()[0].anotherFn()')).toBe('lucas');
expect(count).toBe(1);
});
it('should call the function once when it is part of the context on array lookup function', function() {
var count = 0;
var element = {name: {anotherFn: function() { return 'lucas';} } };
scope.fn = function() {
count++;
return element;
};
expect(scope.$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.$eval('element[fn()].name = "lucas"')).toBe('lucas');
expect(scope.element[0].name).toBe('lucas');
expect(count).toBe(1);
});
describe('promises', function() {
var deferred, promise, q;
beforeEach(inject(function($q) {
q = $q;
deferred = q.defer();
promise = deferred.promise;
}));
describe('{{promise}}', function() {
it('should evaluated resolved promise and get its value', function() {
deferred.resolve('hello!');
scope.greeting = promise;
expect(scope.$eval('greeting')).toBe(undefined);
scope.$digest();
expect(scope.$eval('greeting')).toBe('hello!');
});
it('should evaluated rejected promise and ignore the rejection reason', function() {
deferred.reject('sorry');
scope.greeting = promise;
expect(scope.$eval('gretting')).toBe(undefined);
scope.$digest();
expect(scope.$eval('greeting')).toBe(undefined);
});
it('should evaluate a promise and eventualy get its value', function() {
scope.greeting = promise;
expect(scope.$eval('greeting')).toBe(undefined);
scope.$digest();
expect(scope.$eval('greeting')).toBe(undefined);
deferred.resolve('hello!');
expect(scope.$eval('greeting')).toBe(undefined);
scope.$digest();
expect(scope.$eval('greeting')).toBe('hello!');
});
it('should evaluate a promise and eventualy ignore its rejection', function() {
scope.greeting = promise;
expect(scope.$eval('greeting')).toBe(undefined);
scope.$digest();
expect(scope.$eval('greeting')).toBe(undefined);
deferred.reject('sorry');
expect(scope.$eval('greeting')).toBe(undefined);
scope.$digest();
expect(scope.$eval('greeting')).toBe(undefined);
});
describe('assignment into promises', function() {
// This behavior is analogous to assignments to non-promise values
// that are lazily set on the scope.
it('should evaluate a resolved object promise and set its value', inject(function($parse) {
scope.person = promise;
deferred.resolve({'name': 'Bill Gates'});
var getter = $parse('person.name');
expect(getter(scope)).toBe(undefined);
scope.$digest();
expect(getter(scope)).toBe('Bill Gates');
getter.assign(scope, 'Warren Buffet');
expect(getter(scope)).toBe('Warren Buffet');
}));
it('should evaluate a resolved primitive type promise and set its value', inject(function($parse) {
scope.greeting = promise;
deferred.resolve('Salut!');
var getter = $parse('greeting');
expect(getter(scope)).toBe(undefined);
scope.$digest();
expect(getter(scope)).toBe('Salut!');
getter.assign(scope, 'Bonjour');
expect(getter(scope)).toBe('Bonjour');
}));
it('should evaluate an unresolved promise and set and remember its value', inject(function($parse) {
scope.person = promise;
var getter = $parse('person.name');
expect(getter(scope)).toBe(undefined);
scope.$digest();
expect(getter(scope)).toBe(undefined);
getter.assign(scope, 'Bonjour');
scope.$digest();
expect(getter(scope)).toBe('Bonjour');
var c1Getter = $parse('person.A.B.C1');
scope.$digest();
expect(c1Getter(scope)).toBe(undefined);
c1Getter.assign(scope, 'c1_value');
scope.$digest();
expect(c1Getter(scope)).toBe('c1_value');
// Set another property on the person.A.B
var c2Getter = $parse('person.A.B.C2');
scope.$digest();
expect(c2Getter(scope)).toBe(undefined);
c2Getter.assign(scope, 'c2_value');
scope.$digest();
expect(c2Getter(scope)).toBe('c2_value');
// c1 should be unchanged.
expect($parse('person.A')(scope)).toEqual(
{B: {C1: 'c1_value', C2: 'c2_value'}});
}));
it('should evaluate a resolved promise and overwrite the previous set value in the absense of the getter',
inject(function($parse) {
scope.person = promise;
var c1Getter = $parse('person.A.B.C1');
c1Getter.assign(scope, 'c1_value');
// resolving the promise should update the tree.
deferred.resolve({A: {B: {C1: 'resolved_c1'}}});
scope.$digest();
expect(c1Getter(scope)).toEqual('resolved_c1');
}));
});
});
describe('dereferencing', function() {
it('should evaluate and dereference properties leading to and from a promise', function() {
scope.obj = {greeting: promise};
expect(scope.$eval('obj.greeting')).toBe(undefined);
expect(scope.$eval('obj.greeting.polite')).toBe(undefined);
scope.$digest();
expect(scope.$eval('obj.greeting')).toBe(undefined);
expect(scope.$eval('obj.greeting.polite')).toBe(undefined);
deferred.resolve({polite: 'Good morning!'});
scope.$digest();
expect(scope.$eval('obj.greeting')).toEqual({polite: 'Good morning!'});
expect(scope.$eval('obj.greeting.polite')).toBe('Good morning!');
});
it('should evaluate and dereference properties leading to and from a promise via bracket ' +
'notation', function() {
scope.obj = {greeting: promise};
expect(scope.$eval('obj["greeting"]')).toBe(undefined);
expect(scope.$eval('obj["greeting"]["polite"]')).toBe(undefined);
scope.$digest();
expect(scope.$eval('obj["greeting"]')).toBe(undefined);
expect(scope.$eval('obj["greeting"]["polite"]')).toBe(undefined);
deferred.resolve({polite: 'Good morning!'});
scope.$digest();
expect(scope.$eval('obj["greeting"]')).toEqual({polite: 'Good morning!'});
expect(scope.$eval('obj["greeting"]["polite"]')).toBe('Good morning!');
});
it('should evaluate and dereference array references leading to and from a promise',
function() {
scope.greetings = [promise];
expect(scope.$eval('greetings[0]')).toBe(undefined);
expect(scope.$eval('greetings[0][0]')).toBe(undefined);
scope.$digest();
expect(scope.$eval('greetings[0]')).toBe(undefined);
expect(scope.$eval('greetings[0][0]')).toBe(undefined);
deferred.resolve(['Hi!', 'Cau!']);
scope.$digest();
expect(scope.$eval('greetings[0]')).toEqual(['Hi!', 'Cau!']);
expect(scope.$eval('greetings[0][0]')).toBe('Hi!');
});
it('should evaluate and dereference promises used as function arguments', function() {
scope.greet = function(name) { return 'Hi ' + name + '!'; };
scope.name = promise;
expect(scope.$eval('greet(name)')).toBe('Hi undefined!');
scope.$digest();
expect(scope.$eval('greet(name)')).toBe('Hi undefined!');
deferred.resolve('Veronica');
expect(scope.$eval('greet(name)')).toBe('Hi undefined!');
scope.$digest();
expect(scope.$eval('greet(name)')).toBe('Hi Veronica!');
});
it('should evaluate and dereference promises used as array indexes', function() {
scope.childIndex = promise;
scope.kids = ['Adam', 'Veronica', 'Elisa'];
expect(scope.$eval('kids[childIndex]')).toBe(undefined);