An Objective-C pattern for making sum types - ExampleTestsTestPrintExample.m

ExampleTestsTestPrintExample.m

#import "Example.h" // https://gist.github.com/hborders/e00d7ff965ca8f8df8f7e762a2269efb
#import "ExampleSwitcher.h" // https://gist.github.com/hborders/f378b4e0d0f1d74ff7c8149cb04c6268
#import "ExampleFoo.h" // https://gist.github.com/hborders/094f05d932b3d7a1e389184ba525b0c3
#import "ExampleBar.h" // https://gist.github.com/hborders/f1c231a89de11157adf46ee85880733a

static void printExample(Example * _Nonnull example) {
    [example switchFoo:^(ExampleFoo * _Nonnull foo_) {
        NSLog(@"Foo: %@, %@", foo_.f, foo_.g);
    }
                   bar:^(ExampleBar * _Nonnull bar_) {
                       NSLog(@"Bar: %@, %@", @(bar_.b), @(bar_.c));
                   }];
}

- (void)testPrintExample {
    Example * _Nonnull fooExample = [[ExampleFoo alloc] initWithF:@"foo"
                                                                g:@"goo"];
    Example * _Nonnull barExample = [[ExampleBar alloc] initWithB:2
                                                                c:3];
    
    printExample(fooExample); // Foo: foo, goo
    printExample(barExample); // Bar: 2, 3
}