Untitled

function testOne(servicea, serviceb) {
    // body
}

Try console.log(testOne.toString()). Angular will use a regex to pull out 'servicea' and 'serviceb' from the paramters.

/** Minified
function a(b, c) {
    // Note that b and c are NOT the original paramter names, so toString will not work as expected, since b and c are not services!!
    // body
}
*/

var testTwoArray = [servicec, serviced, function testTwo(c, d) {
    // c and d refer to servicec, serviced since the array syntax has a higher priority over bare function
    // body
}];

app.controller("testOne", testOne)
app.controller("testTwo", testTwoArray) Cheaper to compute since the names are provided, also works in production

https://github.com/angular/angular.js/blob/master/src/auto/injector.js#L45