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|
package otto
import (
"testing"
)
func TestFunction(t *testing.T) {
tt(t, func() {
test, _ := test()
test(`
var abc = Object.getOwnPropertyDescriptor(Function, "prototype");
[ [ typeof Function.prototype, typeof Function.prototype.length, Function.prototype.length ],
[ abc.writable, abc.enumerable, abc.configurable ] ];
`, "function,number,0,false,false,false")
})
}
func Test_argumentList2parameterList(t *testing.T) {
tt(t, func() {
is(argumentList2parameterList([]Value{toValue("abc, def"), toValue("ghi")}), []string{"abc", "def", "ghi"})
})
}
func TestFunction_new(t *testing.T) {
tt(t, func() {
test, _ := test()
test(`raise:
new Function({});
`, "SyntaxError: Unexpected identifier")
test(`
var abc = Function("def, ghi", "jkl", "return def+ghi+jkl");
[ typeof abc, abc instanceof Function, abc("ab", "ba", 1) ];
`, "function,true,abba1")
test(`raise:
var abc = {
toString: function() { throw 1; }
};
var def = {
toString: function() { throw 2; }
};
var ghi = new Function(abc, def);
ghi;
`, "1")
// S15.3.2.1_A3_T10
test(`raise:
var abc = {
toString: function() { return "z;x"; }
};
var def = "return this";
var ghi = new Function(abc, def);
ghi;
`, "SyntaxError: Unexpected token ;")
test(`raise:
var abc;
var def = "return true";
var ghi = new Function(null, def);
ghi;
`, "SyntaxError: Unexpected token null")
})
}
func TestFunction_apply(t *testing.T) {
tt(t, func() {
test, _ := test()
test(`Function.prototype.apply.length`, 2)
test(`String.prototype.substring.apply("abc", [1, 11])`, "bc")
})
}
func TestFunction_call(t *testing.T) {
tt(t, func() {
test, _ := test()
test(`Function.prototype.call.length`, 1)
test(`String.prototype.substring.call("abc", 1, 11)`, "bc")
})
}
func TestFunctionArguments(t *testing.T) {
tt(t, func() {
test, _ := test()
// Should not be able to delete arguments
test(`
function abc(def, arguments){
delete def;
return def;
}
abc(1);
`, 1)
// Again, should not be able to delete arguments
test(`
function abc(def){
delete def;
return def;
}
abc(1);
`, 1)
// Test typeof of a function argument
test(`
function abc(def, ghi, jkl){
return typeof jkl
}
abc("1st", "2nd", "3rd", "4th", "5th");
`, "string")
test(`
function abc(def, ghi, jkl){
arguments[0] = 3.14;
arguments[1] = 'Nothing happens';
arguments[2] = 42;
if (3.14 === def && 'Nothing happens' === ghi && 42 === jkl)
return true;
}
abc(-1, 4.2, 314);
`, true)
})
}
func TestFunctionDeclarationInFunction(t *testing.T) {
tt(t, func() {
test, _ := test()
// Function declarations happen AFTER parameter/argument declarations
// That is, a function declared within a function will shadow/overwrite
// declared parameters
test(`
function abc(def){
return def;
function def(){
return 1;
}
}
typeof abc();
`, "function")
})
}
func TestArguments_defineOwnProperty(t *testing.T) {
tt(t, func() {
test, _ := test()
test(`
var abc;
var def = true;
var ghi = {};
(function (a, b, c) {
Object.defineProperty(arguments, "0", {
value: 42,
writable: false,
enumerable: false,
configurable: false
});
Object.defineProperty(arguments, "1", {
value: 3.14,
configurable: true,
enumerable: true
});
abc = Object.getOwnPropertyDescriptor(arguments, "0");
for (var name in arguments) {
ghi[name] = (ghi[name] || 0) + 1;
if (name === "0") {
def = false;
}
}
}(0, 1, 2));
[ abc.value, abc.writable, abc.enumerable, abc.configurable, def, ghi["1"] ];
`, "42,false,false,false,true,1")
})
}
func TestFunction_bind(t *testing.T) {
tt(t, func() {
test, _ := test()
defer mockUTC()()
test(`
abc = function(){
return "abc";
};
def = abc.bind();
[ typeof def.prototype, typeof def.hasOwnProperty, def.hasOwnProperty("caller"), def.hasOwnProperty("arguments"), def() ];
`, "object,function,true,true,abc")
test(`
abc = function(){
return arguments[1];
};
def = abc.bind(undefined, "abc");
ghi = abc.bind(undefined, "abc", "ghi");
[ def(), def("def"), ghi("def") ];
`, ",def,ghi")
test(`
var abc = function () {};
var ghi;
try {
Object.defineProperty(Function.prototype, "xyzzy", {
value: 1001,
writable: true,
enumerable: true,
configurable: true
});
var def = abc.bind({});
ghi = !def.hasOwnProperty("xyzzy") && ghi.xyzzy === 1001;
} finally {
delete Function.prototype.xyzzy;
}
[ ghi ];
`, "true")
test(`
var abc = function (def, ghi) {};
var jkl = abc.bind({});
var mno = abc.bind({}, 1, 2);
[ jkl.length, mno.length ];
`, "2,0")
test(`raise:
Math.bind();
`, "TypeError: 'bind' is not a function")
test(`
function construct(fn, arguments) {
var bound = Function.prototype.bind.apply(fn, [null].concat(arguments));
return new bound();
}
var abc = construct(Date, [1957, 4, 27]);
Object.prototype.toString.call(abc);
`, "[object Date]")
test(`
var fn = function (x, y, z) {
var result = {};
result.abc = x + y + z;
result.def = arguments[0] === "a" && arguments.length === 3;
return result;
};
var newFn = Function.prototype.bind.call(fn, {}, "a", "b", "c");
var result = new newFn();
[ result.hasOwnProperty("abc"), result.hasOwnProperty("def"), result.abc, result.def ];
`, "true,true,abc,true")
test(`
abc = function(){
return "abc";
};
def = abc.bind();
def.toString();
`, "function () { [native code] }")
})
}
func TestFunction_toString(t *testing.T) {
tt(t, func() {
test, _ := test()
test(`raise:
Function.prototype.toString.call(undefined);
`, "TypeError")
test(`
abc = function() { return -1 ;
}
1;
abc.toString();
`, "function() { return -1 ;\n}")
})
}
|
