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parseSpec.js
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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 only match number chars with isNumber', function() {
expect(Lexer.prototype.isNumber('0')).toBe(true);
expect(Lexer.prototype.isNumber('')).toBeFalsy();
expect(Lexer.prototype.isNumber(' ')).toBeFalsy();
expect(Lexer.prototype.isNumber(0)).toBeFalsy();
expect(Lexer.prototype.isNumber(false)).toBeFalsy();
expect(Lexer.prototype.isNumber(true)).toBeFalsy();
expect(Lexer.prototype.isNumber(undefined)).toBeFalsy();
expect(Lexer.prototype.isNumber(null)).toBeFalsy();
});
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');
i++;
expect(tokens[i].index).toEqual(1);
expect(tokens[i].text).toEqual('.');
i++;
expect(tokens[i].index).toEqual(2);
expect(tokens[i].text).toEqual('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');
expect(tokens[i].value).toEqual(22);
expect(tokens[i].constant).toEqual(true);
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');
expect(tokens[i].value).toEqual(1.3);
expect(tokens[i].constant).toEqual(true);
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].value).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].value).toEqual('d"e');
});
it('should tokenize identifiers with spaces around dots the same as without spaces', function() {
function getText(t) { return t.text; }
var spaces = lex('foo. bar . baz').map(getText);
var noSpaces = lex('foo.bar.baz').map(getText);
expect(spaces).toEqual(noSpaces);
});
it('should tokenize undefined', function() {
var tokens = lex("undefined");
var i = 0;
expect(tokens[i].index).toEqual(0);
expect(tokens[i].text).toEqual('undefined');
});
it('should tokenize quoted string', function() {
var str = "['\\'', \"\\\"\"]";
var tokens = lex(str);
expect(tokens[1].index).toEqual(1);
expect(tokens[1].value).toEqual("'");
expect(tokens[3].index).toEqual(7);
expect(tokens[3].value).toEqual('"');
});
it('should tokenize escaped quoted string', function() {
var str = '"\\"\\n\\f\\r\\t\\v\\u00A0"';
var tokens = lex(str);
expect(tokens[0].value).toEqual('"\n\f\r\t\v\u00A0');
});
it('should tokenize unicode', function() {
var tokens = lex('"\\u00A0"');
expect(tokens.length).toEqual(1);
expect(tokens[0].value).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].value).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($rootScope) {
var tokens = lex("0.5E-10");
expect(tokens[0].value).toEqual(0.5E-10);
expect($rootScope.$eval("0.5E-10")).toEqual(0.5E-10);
tokens = lex("0.5E+10");
expect(tokens[0].value).toEqual(0.5E+10);
}));
it('should throws exception for invalid exponent', function() {
expect(function() {
lex("0.5E-");
}).toThrowMinErr('$parse', 'lexerr', 'Lexer Error: Invalid exponent at column 4 in expression [0.5E-].');
expect(function() {
lex("0.5E-A");
}).toThrowMinErr('$parse', 'lexerr', 'Lexer Error: Invalid exponent at column 4 in expression [0.5E-A].');
});
it('should tokenize number starting with a dot', function() {
var tokens = lex(".5");
expect(tokens[0].value).toEqual(0.5);
});
it('should throw error on invalid unicode', function() {
expect(function() {
lex("'\\u1''bla'");
}).toThrowMinErr("$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.$eval("true===2<3")).toEqual(true === 2 < 3);
expect(scope.$eval("true===3===3")).toEqual(true === 3 === 3);
expect(scope.$eval("3===3===true")).toEqual(3 === 3 === true);
expect(scope.$eval("3 >= 3 > 2")).toEqual(3 >= 3 > 2);
});
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 handle white-spaces around dots in method invocations', function() {
scope.a = {b: function() { return this.c; }, c: 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 \n . \nb \n ()", 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', 'ueoe',
"Unexpected end of expression: a.");
expect(function() {
scope.$eval("a .", scope);
}).toThrowMinErr('$parse', 'ueoe',
"Unexpected end of expression: a .");
});
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.$eval("a=123; b=234")).toEqual(234);
expect(scope.a).toEqual(123);
expect(scope.b).toEqual(234);
});
it('should allow use of locals in the left side of an assignment', inject(function($rootScope) {
$rootScope.a = {};
$rootScope.key = "value";
var localA = {};
//getterFn
$rootScope.$eval('a.value = 1', {a: localA});
expect(localA.value).toBe(1);
$rootScope.$eval('w.a.value = 2', {w: {a: localA}});
expect(localA.value).toBe(2);
//field access
$rootScope.$eval('(a).value = 3', {a: localA});
expect(localA.value).toBe(3);
$rootScope.$eval('{c: {b: a}}.c.b.value = 4', {a: localA});
expect(localA.value).toBe(4);
//object index
$rootScope.$eval('a[key] = 5', {a: localA});
expect(localA.value).toBe(5);
$rootScope.$eval('w.a[key] = 6', {w: {a: localA}});
expect(localA.value).toBe(6);
$rootScope.$eval('{c: {b: a}}.c.b[key] = 7', {a: localA});
expect(localA.value).toBe(7);
//Nothing should have touched the $rootScope.a
expect($rootScope.a.value).toBeUndefined();
}));
it('should allow use of locals in sub expressions of the left side of an assignment', inject(function($rootScope, $parse) {
delete $rootScope.x;
$rootScope.$eval('x[a][b] = true', {a: 'foo', b: 'bar'});
expect($rootScope.x.foo.bar).toBe(true);
delete $rootScope.x;
$rootScope.$eval('x.foo[b] = true', {b: 'bar'});
expect($rootScope.x.foo.bar).toBe(true);
delete $rootScope.x;
$rootScope.$eval('x[a].bar = true', {a: 'foo'});
expect($rootScope.x.foo.bar).toBe(true);
}));
it('should ignore locals beyond the root object of an assignment expression', inject(function($rootScope) {
var a = {};
var locals = {a: a};
$rootScope.b = {a: {value: 123}};
$rootScope.$eval('b.a.value = 1', locals);
expect(a.value).toBeUndefined();
expect($rootScope.b.a.value).toBe(1);
}));
it('should evaluate assignments in ternary operator', function() {
scope.$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.getter = function() { return function() { return 33; }; };
expect(scope.$eval("getter()()")).toBe(33);
});
// There is no "strict mode" in IE9
if (!msie || msie > 9) {
it('should set no context to functions returned by other functions', function() {
scope.getter = function() { return function() { expect(this).toBeUndefined(); }; };
scope.$eval("getter()()");
});
}
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(scope.$eval("{}")).toEqual({});
expect(scope.$eval("{a:'b'}")).toEqual({a:"b"});
expect(scope.$eval("{'a':'b'}")).toEqual({a:"b"});
expect(scope.$eval("{\"a\":'b'}")).toEqual({a:"b"});
expect(scope.$eval("{a:'b',}")).toEqual({a:"b"});
expect(scope.$eval("{'a':'b',}")).toEqual({a:"b"});
expect(scope.$eval("{\"a\":'b',}")).toEqual({a:"b"});
expect(scope.$eval("{'0':1}")).toEqual({0:1});
expect(scope.$eval("{0:1}")).toEqual({0:1});
expect(scope.$eval("{1:1}")).toEqual({1:1});
expect(scope.$eval("{null:1}")).toEqual({null:1});
expect(scope.$eval("{'null':1}")).toEqual({null:1});
expect(scope.$eval("{false:1}")).toEqual({false:1});
expect(scope.$eval("{'false':1}")).toEqual({false:1});
expect(scope.$eval("{'':1,}")).toEqual({"":1});
});
it('should throw syntax error exception for non constant/identifier JSON keys', function() {
expect(function() { scope.$eval("{[:0}"); }).toThrowMinErr("$parse", "syntax",
"Syntax Error: Token '[' invalid key at column 2 of the expression [{[:0}] starting at [[:0}]");
expect(function() { scope.$eval("{{:0}"); }).toThrowMinErr("$parse", "syntax",
"Syntax Error: Token '{' invalid key at column 2 of the expression [{{:0}] starting at [{:0}]");
expect(function() { scope.$eval("{?:0}"); }).toThrowMinErr("$parse", "syntax",
"Syntax Error: Token '?' invalid key at column 2 of the expression [{?:0}] starting at [?:0}]");
expect(function() { scope.$eval("{):0}"); }).toThrowMinErr("$parse", "syntax",
"Syntax Error: Token ')' invalid key at column 2 of the expression [{):0}] starting at [):0}]");
});
it('should evaluate object access', function() {
expect(scope.$eval("{false:'WC', true:'CC'}[false]")).toEqual("WC");
});
it('should evaluate JSON', function() {
expect(scope.$eval("[{}]")).toEqual([{}]);
expect(scope.$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.$eval('false && run()')).toBe(false);
expect(scope.$eval('false && true && run()')).toBe(false);
});
it('should short-circuit OR operator', function() {
scope.run = function() {
throw "IT SHOULD NOT HAVE RUN";
};
expect(scope.$eval('true || run()')).toBe(true);
expect(scope.$eval('true || false || 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');
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');
expect(function() {
scope.$eval("c.a = 1", {c: Function.prototype.constructor});
}).toThrowMinErr(
'$parse', 'isecfn', 'Referencing Function in Angular expressions is disallowed! ' +
'Expression: c.a');
});
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)');
});
it('should NOT allow access to Object constructor in assignment locals', function() {
expect(function() {