function body as a string test

[chrisgillis]

var multiply = function (a, b) {
//An internal comment
return a * b;
};
var stupid = "function (a, b) {
return a * b;
}"
expect(multiply.toString()).toBe(stupid);

why doesn't that work? if i remove the '' lien terminators it works but Firefox throws an unterminated string literal error.

[chrisgillis]

It would seem you have to use \n characters and match the amount of spaces that toString() outputs exactly or the test will not pass. This seems poor.

[EnzoMartin]

Ah, didn't see this before opening my own issue on this.. yea, the script expects to receive:

'function (a, b) {\n return a * b;\n}'

It should accept:

'function (a, b) { return a * b; }'

[william-s]

In addition to these formating problems, it seems the latest version of chromium expects //An internal comment as well where as firefox does not.

[victorb]

I'm also having trouble with this one. This is the output I get:

Expected 'function (a, b) {
  //An internal comment
  return a * b;
}' to be 'function (a, b) {
  //An internal comment
  return a * b;
}'.

This is the debug message:

Error: Expected 'function (a, b) {
at null.<anonymous> (http://localhost/javascript-koans/koans/AboutFunctions.js:112:33)

This is my code:

it("should use function body as a string", function () {
var add = new Function("a", "b", "return a + b;");
expect(add(1, 2)).toBe(3);

var multiply = function (a, b) {
  //An internal comment
  return a * b;
};
var functionMultiply = "function (a, b) {\n\
  //An internal comment\n\
  return a * b;\n\
}"

expect(multiply.toString()).toBe(functionMultiply);
});    

Could someone possibly help me with this one?

[stefanscheidt]

Here what works for me on Chrome 23:

it("should use function body as a string", function () {
  var add = new Function("a", "b", "return a + b;");
  expect(add(1, 2)).toBe(3);

  var multiply = function (a, b) {
    //An internal comment
    return a * b;
  };

  expect(multiply.toString()).toBe("function (a, b) {\n"
    + "      //An internal comment\n"
    + "      return a * b;\n"
    + "    }");
});    

[stefanscheidt]

See also #10.

[adrianhorning08]

Wouldn't this work as well?
"function(a, b) {"
"// An internal comment"
"return a * b;"
"};"