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cocoa 0.4.1

Bindings to Cocoa for OS X
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#[macro_use]
extern crate objc;
extern crate cocoa;

#[cfg(test)]
mod foundation {
    mod nsstring {
        use cocoa::foundation::{NSString};
        use cocoa::base::{nil};
        use std::slice;
        use std::str;

        #[test]
        fn test_utf8() {
            let expected = "Iñtërnâtiônàlizætiøn";
            unsafe {
                let built = NSString::alloc(nil).init_str(expected);
                let bytes = built.UTF8String() as *const u8;
                let objc_string = str::from_utf8(slice::from_raw_parts(bytes, built.len())).unwrap();
                assert!(objc_string.len() == expected.len());
                assert!(objc_string == expected);
            }
        }

        #[test]
        fn test_string() {
            let expected = "Hello World!";
            unsafe {
                let built = NSString::alloc(nil).init_str(expected);
                let bytes = built.UTF8String() as *const u8;
                let objc_string = str::from_utf8(slice::from_raw_parts(bytes, built.len())).unwrap();
                assert!(objc_string.len() == expected.len());
                assert!(objc_string == expected);
            }
        }

        #[test]
        fn test_length() {
            let expected = "Hello!";
            unsafe {
                let built = NSString::alloc(nil).init_str(expected);
                assert!(built.len() == expected.len());
            }
        }

        #[test]
        fn test_append_by_appending_string() {
            let initial_str = "Iñtërnâtiônàlizætiøn";
            let to_append = "_more_strings";
            let expected = concat!("Iñtërnâtiônàlizætiøn", "_more_strings");
            unsafe {
                let built = NSString::alloc(nil).init_str(initial_str);
                let built_to_append = NSString::alloc(nil).init_str(to_append);
                let append_string = built.stringByAppendingString_(built_to_append);
                let bytes = append_string.UTF8String() as *const u8;
                let objc_string = str::from_utf8(slice::from_raw_parts(bytes, append_string.len())).unwrap();
                assert!(objc_string == expected);
            }
        }
    }

    mod nsfastenumeration {
        use std::str;
        use std::slice;
        use cocoa::foundation::{NSString, NSFastEnumeration};
        use cocoa::base::{id, nil};

        #[test]
        fn test_iter() {
            unsafe {
                let string = NSString::alloc(nil).init_str("this is a test string");
                let separator = NSString::alloc(nil).init_str(" ");
                let components: id = msg_send![string, componentsSeparatedByString:separator];

                let combined = components.iter()
                    .map(|s| {
                        let bytes = s.UTF8String() as *const u8;
                        str::from_utf8(slice::from_raw_parts(bytes, s.len())).unwrap()
                    })
                .fold(String::new(), |mut acc, s| { acc.push_str(s); acc });

                assert_eq!(combined, "thisisateststring");
            }
        }

        #[test]
        #[should_panic]
        fn test_mutation() {
            unsafe {
                let string = NSString::alloc(nil).init_str("this is a test string");
                let separator = NSString::alloc(nil).init_str(" ");
                let components: id = msg_send![string, componentsSeparatedByString:separator];
                let mut_components: id = msg_send![components, mutableCopy];
                let mut iter = mut_components.iter();
                iter.next();
                msg_send![mut_components, removeObjectAtIndex:1];
                iter.next();
            }
        }
    }
}