Parsing JSON in Objective-C

ParsingJSONTests.m

#import <XCTest/XCTest.h>
#import "Person.h"

@interface ParsingJSONTests : XCTestCase

@end

@implementation ParsingJSONTests

- (void)testReadingJSONFile {
    
    // Getting the path in the current bundle
    NSString *path = [[NSBundle mainBundle] pathForResource:@"sample" ofType:@"json" inDirectory:nil];
    if (path) {
        // create data from that path
        NSData *jsonData = [NSData dataWithContentsOfFile:path];
        NSError *error;
        if (jsonData) {
            NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:jsonData options:[] error:&error];
            if (error) {
                XCTFail(@"JSONSerialization error: %@", error.localizedDescription);
            } else {
                // create our Person object
                Person *person = [[Person alloc] initWithDict:dict];
                XCTAssertEqualObjects(person.name, @"Jane");
                XCTAssertEqualObjects(person.email, @"jane@jane.com");
                XCTAssertEqualObjects(person.phone, @"917-123-4567");

            }
        } else {
            XCTFail(@"data is nil");
        }
        XCTAssertNotNil(path);
    } else {
        XCTFail(@"file NOT FOUND");
    }
    
}

@end

Person.h

@interface Person: NSObject

@property (copy, nonatomic, readonly) NSString *name;
@property (copy, nonatomic, readonly) NSString *email;
@property (copy, nonatomic, readonly) NSString *phone;

- (instancetype)initWithDict:(NSDictionary *)dict;

@end

Person.m

#import <Foundation/Foundation.h>
#import "Person.h"

@implementation Person

- (instancetype)initWithDict:(NSDictionary *)dict {
    self = [super init];
    if (self) {
        if (dict[@"name"])
            _name = dict[@"name"];
        if (dict[@"email"])
            _email = dict[@"email"];
        if (dict[@"phone"])
            _phone = dict[@"phone"];
    }
    return self; // return person;
}

@end