Add support for identifying alerts by message.

SLAlert currently only matches alerts by title, but alerts don't actually have to have titles. Therefore it would be nice to add support for matching alerts by text (the "message" provided to -[UIAlertView initWithTitle:message:delegate:cancelButtonTitle:otherButtonTitles:]).

This would involve adding an +alertWithMessage: constructor to SLAlert, and modifying -[SLAlert isEqualToUIAAlertPredicate] to compare messages if the SLAlert had not been initialized with a title.

[wearhere]

Thanks @mrsamuelkim! I've made the description a bit more specific. I agree this would be a good addition to the framework.

I was able to fix this issue by making a temporary edits to -isEqualToUIAAlertPredicate so it points to the message instead of the alert.name(). For me, it was alert.scrollViews()[0].staticTexts()[1].value().

@wearhere, would you prefer to check title first and if it wasn't initialized then go to the message? or would you want to separate the methods?

[wearhere]

Title first, then message (and asserting if both are nil) sounds good.

Btw is it staticTexts()[1] even if there's no title? I thought I saw then that there would be only one static text element. To be safe we should probably do something like

var textElements = alert.scrollViews()[0].staticTexts().toArray();
if (textElements.length > 0) {
   // assumes _message_ has been formatted into this snippet somehow
   return message === textElements[textElements.length - 1].value();
} else {
   return NO;
}

Ah, makes sense to do that! I was just doing a quick change for verification reasons. Thanks!

[wearhere]

I take it that you tried out #248 @mrsamuelkim? I'd like to have its merger close this issue (via the "resolves" tag), but thanks for following up!

@wearhere, ah, sorry about that!