objectivec/Tests/GPBDictionaryTests.m

// Protocol Buffers - Google's data interchange format
// Copyright 2017 Google Inc.  All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd

#import <Foundation/Foundation.h>
#import <XCTest/XCTest.h>

#import "GPBDictionary.h"
#import "GPBDictionary_PackagePrivate.h"
#import "GPBTestUtilities.h"

#pragma mark - GPBAutocreatedDictionary Tests

// These are hand written tests to double check some behaviors of the
// GPBAutocreatedDictionary.  The GPBDictionary+[type]Tests files are generate
// tests.

// NOTE: GPBAutocreatedDictionary is private to the library, users of the
// library should never have to directly deal with this class.

@interface GPBAutocreatedDictionaryTests : XCTestCase
@end

@implementation GPBAutocreatedDictionaryTests

- (void)testEquality {
  GPBAutocreatedDictionary *dict = [[GPBAutocreatedDictionary alloc] init];

  XCTAssertTrue([dict isEqual:@{}]);
  XCTAssertTrue([dict isEqualToDictionary:@{}]);

  XCTAssertFalse([dict isEqual:@{@"foo" : @"bar"}]);
  XCTAssertFalse([dict isEqualToDictionary:@{@"foo" : @"bar"}]);

  [dict setObject:@"bar" forKey:@"foo"];

  XCTAssertFalse([dict isEqual:@{}]);
  XCTAssertFalse([dict isEqualToDictionary:@{}]);
  XCTAssertTrue([dict isEqual:@{@"foo" : @"bar"}]);
  XCTAssertTrue([dict isEqualToDictionary:@{@"foo" : @"bar"}]);
  XCTAssertFalse([dict isEqual:@{@"bar" : @"baz"}]);
  XCTAssertFalse([dict isEqualToDictionary:@{@"bar" : @"baz"}]);

  GPBAutocreatedDictionary *dict2 = [[GPBAutocreatedDictionary alloc] init];

  XCTAssertFalse([dict isEqual:dict2]);
  XCTAssertFalse([dict isEqualToDictionary:dict2]);

  [dict2 setObject:@"mumble" forKey:@"foo"];
  XCTAssertFalse([dict isEqual:dict2]);
  XCTAssertFalse([dict isEqualToDictionary:dict2]);

  [dict2 setObject:@"bar" forKey:@"foo"];
  XCTAssertTrue([dict isEqual:dict2]);
  XCTAssertTrue([dict isEqualToDictionary:dict2]);

  [dict2 release];
  [dict release];
}

- (void)testCopy {
  {
    GPBAutocreatedDictionary *dict = [[GPBAutocreatedDictionary alloc] init];

    NSDictionary *cpy = [dict copy];
    XCTAssertTrue(cpy != dict);  // Ptr compare
    XCTAssertTrue([cpy isKindOfClass:[NSDictionary class]]);
    XCTAssertFalse([cpy isKindOfClass:[GPBAutocreatedDictionary class]]);
    XCTAssertEqual(cpy.count, (NSUInteger)0);

    NSDictionary *cpy2 = [dict copy];
    XCTAssertTrue(cpy2 != dict);  // Ptr compare
    XCTAssertTrue(cpy2 != cpy);   // Ptr compare
    XCTAssertTrue([cpy2 isKindOfClass:[NSDictionary class]]);
    XCTAssertFalse([cpy2 isKindOfClass:[GPBAutocreatedDictionary class]]);
    XCTAssertEqual(cpy2.count, (NSUInteger)0);

    [cpy2 release];
    [cpy release];
    [dict release];
  }

  {
    GPBAutocreatedDictionary *dict = [[GPBAutocreatedDictionary alloc] init];

    NSMutableDictionary *cpy = [dict mutableCopy];
    XCTAssertTrue(cpy != dict);  // Ptr compare
    XCTAssertTrue([cpy isKindOfClass:[NSMutableDictionary class]]);
    XCTAssertFalse([cpy isKindOfClass:[GPBAutocreatedDictionary class]]);
    XCTAssertEqual(cpy.count, (NSUInteger)0);

    NSMutableDictionary *cpy2 = [dict mutableCopy];
    XCTAssertTrue(cpy2 != dict);  // Ptr compare
    XCTAssertTrue(cpy2 != cpy);   // Ptr compare
    XCTAssertTrue([cpy2 isKindOfClass:[NSMutableDictionary class]]);
    XCTAssertFalse([cpy2 isKindOfClass:[GPBAutocreatedDictionary class]]);
    XCTAssertEqual(cpy2.count, (NSUInteger)0);

    [cpy2 release];
    [cpy release];
    [dict release];
  }

  {
    GPBAutocreatedDictionary *dict = [[GPBAutocreatedDictionary alloc] init];
    dict[@"foo"] = @"bar";
    dict[@"baz"] = @"mumble";

    NSDictionary *cpy = [dict copy];
    XCTAssertTrue(cpy != dict);  // Ptr compare
    XCTAssertTrue([cpy isKindOfClass:[NSDictionary class]]);
    XCTAssertFalse([cpy isKindOfClass:[GPBAutocreatedDictionary class]]);
    XCTAssertEqual(cpy.count, (NSUInteger)2);
    XCTAssertEqualObjects(cpy[@"foo"], @"bar");
    XCTAssertEqualObjects(cpy[@"baz"], @"mumble");

    NSDictionary *cpy2 = [dict copy];
    XCTAssertTrue(cpy2 != dict);  // Ptr compare
    XCTAssertTrue(cpy2 != cpy);   // Ptr compare
    XCTAssertTrue([cpy2 isKindOfClass:[NSDictionary class]]);
    XCTAssertFalse([cpy2 isKindOfClass:[GPBAutocreatedDictionary class]]);
    XCTAssertEqual(cpy2.count, (NSUInteger)2);
    XCTAssertEqualObjects(cpy2[@"foo"], @"bar");
    XCTAssertEqualObjects(cpy2[@"baz"], @"mumble");

    [cpy2 release];
    [cpy release];
    [dict release];
  }

  {
    GPBAutocreatedDictionary *dict = [[GPBAutocreatedDictionary alloc] init];
    dict[@"foo"] = @"bar";
    dict[@"baz"] = @"mumble";

    NSMutableDictionary *cpy = [dict mutableCopy];
    XCTAssertTrue(cpy != dict);  // Ptr compare
    XCTAssertTrue([cpy isKindOfClass:[NSMutableDictionary class]]);
    XCTAssertFalse([cpy isKindOfClass:[GPBAutocreatedDictionary class]]);
    XCTAssertEqual(cpy.count, (NSUInteger)2);
    XCTAssertEqualObjects(cpy[@"foo"], @"bar");
    XCTAssertEqualObjects(cpy[@"baz"], @"mumble");

    NSMutableDictionary *cpy2 = [dict mutableCopy];
    XCTAssertTrue(cpy2 != dict);  // Ptr compare
    XCTAssertTrue(cpy2 != cpy);   // Ptr compare
    XCTAssertTrue([cpy2 isKindOfClass:[NSMutableDictionary class]]);
    XCTAssertFalse([cpy2 isKindOfClass:[GPBAutocreatedDictionary class]]);
    XCTAssertEqual(cpy2.count, (NSUInteger)2);
    XCTAssertEqualObjects(cpy2[@"foo"], @"bar");
    XCTAssertEqualObjects(cpy2[@"baz"], @"mumble");

    [cpy2 release];
    [cpy release];
    [dict release];
  }
}

@end