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MigrationTests.mm
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MigrationTests.mm
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////////////////////////////////////////////////////////////////////////////
//
// Copyright 2014 Realm Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
////////////////////////////////////////////////////////////////////////////
#import "RLMTestCase.h"
#import "RLMMigration.h"
#import "RLMObjectSchema_Private.hpp"
#import "RLMObjectStore.h"
#import "RLMObject_Private.h"
#import "RLMProperty_Private.h"
#import "RLMRealmConfiguration_Private.h"
#import "RLMRealm_Dynamic.h"
#import "RLMRealm_Private.hpp"
#import "RLMSchema_Private.h"
#import "RLMUtil.hpp"
#import "RLMRealmUtil.hpp"
#import "object_store.hpp"
#import "shared_realm.hpp"
#import <realm/table.hpp>
#import <realm/version.hpp>
#import <objc/runtime.h>
using namespace realm;
static void RLMAssertRealmSchemaMatchesTable(id self, RLMRealm *realm) {
for (RLMObjectSchema *objectSchema in realm.schema.objectSchema) {
auto& info = realm->_info[objectSchema.className];
TableRef table = ObjectStore::table_for_object_type(realm.group, objectSchema.objectName.UTF8String);
for (RLMProperty *property in objectSchema.properties) {
auto column = info.tableColumn(property);
XCTAssertEqual(column, table->get_column_key(RLMStringDataWithNSString(property.columnName)));
bool indexed = property.indexed && !property.isPrimary;
XCTAssertEqual(indexed, table->has_search_index(column));
}
}
static_cast<void>(self);
}
@interface MigrationTestObject : RLMObject
@property int intCol;
@property NSString *stringCol;
@end
RLM_ARRAY_TYPE(MigrationTestObject);
@implementation MigrationTestObject
@end
@interface MigrationPrimaryKeyObject : RLMObject
@property int intCol;
@end
@implementation MigrationPrimaryKeyObject
+ (NSString *)primaryKey {
return @"intCol";
}
@end
@interface MigrationStringPrimaryKeyObject : RLMObject
@property NSString * stringCol;
@end
@implementation MigrationStringPrimaryKeyObject
+ (NSString *)primaryKey {
return @"stringCol";
}
@end
@interface ThreeFieldMigrationTestObject : RLMObject
@property int col1;
@property int col2;
@property int col3;
@end
@implementation ThreeFieldMigrationTestObject
@end
@interface MigrationTwoStringObject : RLMObject
@property NSString *col1;
@property NSString *col2;
@end
@implementation MigrationTwoStringObject
@end
@interface MigrationLinkObject : RLMObject
@property MigrationTestObject *object;
@property RLMArray<MigrationTestObject> *array;
@end
@implementation MigrationLinkObject
@end
@interface MigrationTests : RLMTestCase
@end
@interface DateMigrationObject : RLMObject
@property (nonatomic, strong) NSDate *nonNullNonIndexed;
@property (nonatomic, strong) NSDate *nullNonIndexed;
@property (nonatomic, strong) NSDate *nonNullIndexed;
@property (nonatomic, strong) NSDate *nullIndexed;
@property (nonatomic) int cookie;
@end
#define RLM_OLD_DATE_FORMAT (REALM_VER_MAJOR < 1 && REALM_VER_MINOR < 100)
@implementation DateMigrationObject
+ (NSArray *)requiredProperties {
return @[@"nonNullNonIndexed", @"nonNullIndexed"];
}
+ (NSArray *)indexedProperties {
return @[@"nonNullIndexed", @"nullIndexed"];
}
@end
@implementation MigrationTests
#pragma mark - Helper methods
- (RLMSchema *)schemaWithObjects:(NSArray *)objects {
RLMSchema *schema = [[RLMSchema alloc] init];
schema.objectSchema = objects;
return schema;
}
- (RLMRealm *)realmWithSingleObject:(RLMObjectSchema *)objectSchema {
return [self realmWithTestPathAndSchema:[self schemaWithObjects:@[objectSchema]]];
}
- (RLMRealmConfiguration *)config {
RLMRealmConfiguration *config = [RLMRealmConfiguration new];
config.fileURL = RLMTestRealmURL();
return config;
}
- (void)createTestRealmWithClasses:(NSArray *)classes block:(void (^)(RLMRealm *realm))block {
NSMutableArray *objectSchema = [NSMutableArray arrayWithCapacity:classes.count];
for (Class cls in classes) {
[objectSchema addObject:[RLMObjectSchema schemaForObjectClass:cls]];
}
[self createTestRealmWithSchema:objectSchema block:block];
}
- (void)createTestRealmWithSchema:(NSArray *)objectSchema block:(void (^)(RLMRealm *realm))block {
@autoreleasepool {
RLMRealmConfiguration *config = [RLMRealmConfiguration new];
config.fileURL = RLMTestRealmURL();
config.customSchema = [self schemaWithObjects:objectSchema];
RLMRealm *realm = [RLMRealm realmWithConfiguration:config error:nil];
[realm beginWriteTransaction];
block(realm);
[realm commitWriteTransaction];
}
}
- (RLMRealm *)migrateTestRealmWithBlock:(RLMMigrationBlock)block NS_RETURNS_RETAINED {
@autoreleasepool {
RLMRealmConfiguration *config = [RLMRealmConfiguration new];
config.fileURL = RLMTestRealmURL();
config.schemaVersion = 1;
config.migrationBlock = block;
XCTAssertTrue([RLMRealm performMigrationForConfiguration:config error:nil]);
RLMRealm *realm = [RLMRealm realmWithConfiguration:config error:nil];
RLMAssertRealmSchemaMatchesTable(self, realm);
return realm;
}
}
- (void)failToMigrateTestRealmWithBlock:(RLMMigrationBlock)block {
@autoreleasepool {
RLMRealmConfiguration *config = [RLMRealmConfiguration new];
config.fileURL = RLMTestRealmURL();
config.schemaVersion = 1;
config.migrationBlock = block;
XCTAssertFalse([RLMRealm performMigrationForConfiguration:config error:nil]);
}
}
- (void)assertMigrationRequiredForChangeFrom:(NSArray *)from to:(NSArray *)to {
RLMRealmConfiguration *config = [RLMRealmConfiguration new];
config.customSchema = [self schemaWithObjects:from];
@autoreleasepool { [RLMRealm realmWithConfiguration:config error:nil]; }
config.customSchema = [self schemaWithObjects:to];
config.migrationBlock = ^(__unused RLMMigration *migration, __unused uint64_t oldSchemaVersion) {
XCTFail(@"Migration block should not have been called");
};
RLMAssertThrowsWithCodeMatching([RLMRealm realmWithConfiguration:config error:nil], RLMErrorSchemaMismatch);
__block bool migrationCalled = false;
config.schemaVersion = 1;
config.migrationBlock = ^(__unused RLMMigration *migration, __unused uint64_t oldSchemaVersion) {
migrationCalled = true;
};
XCTAssertNoThrow([RLMRealm realmWithConfiguration:config error:nil]);
XCTAssertTrue(migrationCalled);
RLMAssertRealmSchemaMatchesTable(self, [RLMRealm realmWithConfiguration:config error:nil]);
}
- (void)assertNoMigrationRequiredForChangeFrom:(NSArray *)from to:(NSArray *)to {
RLMRealmConfiguration *config = [RLMRealmConfiguration new];
config.customSchema = [self schemaWithObjects:from];
@autoreleasepool { [RLMRealm realmWithConfiguration:config error:nil]; }
config.customSchema = [self schemaWithObjects:to];
config.migrationBlock = ^(__unused RLMMigration *migration, __unused uint64_t oldSchemaVersion) {
XCTFail(@"Migration block should not have been called");
};
XCTAssertNoThrow([RLMRealm realmWithConfiguration:config error:nil]);
RLMAssertRealmSchemaMatchesTable(self, [RLMRealm realmWithConfiguration:config error:nil]);
}
- (RLMRealmConfiguration *)renameConfigurationWithObjectSchemas:(NSArray *)objectSchemas migrationBlock:(RLMMigrationBlock)block {
RLMRealmConfiguration *configuration = [RLMRealmConfiguration new];
configuration.fileURL = RLMTestRealmURL();
configuration.schemaVersion = 1;
configuration.customSchema = [self schemaWithObjects:objectSchemas];
configuration.migrationBlock = block;
return configuration;
}
- (RLMRealmConfiguration *)renameConfigurationWithObjectSchemas:(NSArray *)objectSchemas className:(NSString *)className
oldName:(NSString *)oldName newName:(NSString *)newName {
return [self renameConfigurationWithObjectSchemas:objectSchemas migrationBlock:^(RLMMigration *migration, uint64_t) {
[migration renamePropertyForClass:className oldName:oldName newName:newName];
[migration enumerateObjects:AllTypesObject.className block:^(RLMObject *oldObject, RLMObject *newObject) {
XCTAssertNotNil(oldObject[oldName]);
RLMAssertThrowsWithReasonMatching(newObject[newName], @"Invalid property name");
XCTAssertEqualObjects(oldObject[oldName], newObject[newName]);
XCTAssertEqualObjects([oldObject.description stringByReplacingOccurrencesOfString:@"before_" withString:@""], newObject.description);
}];
}];
}
- (void)assertPropertyRenameError:(NSString *)errorMessage objectSchemas:(NSArray *)objectSchemas
className:(NSString *)className oldName:(NSString *)oldName newName:(NSString *)newName {
RLMRealmConfiguration *config = [self renameConfigurationWithObjectSchemas:objectSchemas className:className
oldName:oldName newName:newName];
NSError *error;
[RLMRealm performMigrationForConfiguration:config error:&error];
XCTAssertTrue([error.localizedDescription rangeOfString:errorMessage].location != NSNotFound,
@"\"%@\" should contain \"%@\"", error.localizedDescription, errorMessage);
}
- (void)assertPropertyRenameError:(NSString *)errorMessage
firstSchemaTransform:(void (^)(RLMObjectSchema *, RLMProperty *, RLMProperty *))transform1
secondSchemaTransform:(void (^)(RLMObjectSchema *, RLMProperty *, RLMProperty *))transform2 {
RLMObjectSchema *schema = [RLMObjectSchema schemaForObjectClass:StringObject.class];
RLMProperty *afterProperty = schema.properties.firstObject;
RLMProperty *beforeProperty = [afterProperty copyWithNewName:@"before_stringCol"];
schema.properties = @[beforeProperty];
if (transform1) {
transform1(schema, beforeProperty, afterProperty);
}
[self createTestRealmWithSchema:@[schema] block:^(RLMRealm *realm) {
if (errorMessage == nil) {
[StringObject createInRealm:realm withValue:@[@"0"]];
}
}];
schema.properties = @[afterProperty];
if (transform2) {
transform2(schema, beforeProperty, afterProperty);
}
auto config = [self renameConfigurationWithObjectSchemas:@[schema]
className:StringObject.className
oldName:beforeProperty.name
newName:afterProperty.name];
if (errorMessage) {
NSError *error;
[RLMRealm performMigrationForConfiguration:config error:&error];
XCTAssertEqualObjects([error localizedDescription], errorMessage);
} else {
XCTAssertTrue([RLMRealm performMigrationForConfiguration:config error:nil]);
XCTAssertEqualObjects(@"0", [[[StringObject allObjectsInRealm:[RLMRealm realmWithConfiguration:config error:nil]] firstObject] stringCol]);
}
}
#pragma mark - Schema versions
- (void)testGetSchemaVersion {
XCTAssertThrows([RLMRealm schemaVersionAtURL:RLMDefaultRealmURL() encryptionKey:nil error:nil]);
NSError *error;
XCTAssertEqual(RLMNotVersioned, [RLMRealm schemaVersionAtURL:RLMDefaultRealmURL() encryptionKey:nil error:&error]);
RLMValidateRealmError(error, RLMErrorFail, @"Cannot open an uninitialized realm in read-only mode", nil);
RLMRealmConfiguration *config = [RLMRealmConfiguration defaultConfiguration];
@autoreleasepool { [RLMRealm realmWithConfiguration:config error:nil]; }
XCTAssertEqual(0U, [RLMRealm schemaVersionAtURL:config.fileURL encryptionKey:nil error:nil]);
config.schemaVersion = 1;
config.migrationBlock = ^(__unused RLMMigration *migration, uint64_t oldSchemaVersion) {
XCTAssertEqual(0U, oldSchemaVersion);
};
@autoreleasepool { [RLMRealm realmWithConfiguration:config error:nil]; }
XCTAssertEqual(1U, [RLMRealm schemaVersionAtURL:config.fileURL encryptionKey:nil error:nil]);
}
- (void)testSchemaVersionCannotGoDown {
RLMRealmConfiguration *config = [RLMRealmConfiguration defaultConfiguration];
config.schemaVersion = 10;
@autoreleasepool { [RLMRealm realmWithConfiguration:config error:nil]; }
XCTAssertEqual(10U, [RLMRealm schemaVersionAtURL:config.fileURL encryptionKey:nil error:nil]);
config.schemaVersion = 5;
RLMAssertThrowsWithReasonMatching([RLMRealm realmWithConfiguration:config error:nil],
@"Provided schema version 5 is less than last set version 10.");
}
- (void)testDifferentSchemaVersionsAtDifferentPaths {
RLMRealmConfiguration *config = [RLMRealmConfiguration defaultConfiguration];
config.schemaVersion = 10;
@autoreleasepool { [RLMRealm realmWithConfiguration:config error:nil]; }
XCTAssertEqual(10U, [RLMRealm schemaVersionAtURL:config.fileURL encryptionKey:nil error:nil]);
RLMRealmConfiguration *config2 = [RLMRealmConfiguration defaultConfiguration];
config2.schemaVersion = 5;
config2.fileURL = RLMTestRealmURL();
@autoreleasepool { [RLMRealm realmWithConfiguration:config2 error:nil]; }
XCTAssertEqual(5U, [RLMRealm schemaVersionAtURL:config2.fileURL encryptionKey:nil error:nil]);
// Should not have been changed
XCTAssertEqual(10U, [RLMRealm schemaVersionAtURL:config.fileURL encryptionKey:nil error:nil]);
}
#pragma mark - Migration Requirements
- (void)testAddingClassDoesNotRequireMigration {
RLMRealmConfiguration *config = [RLMRealmConfiguration new];
config.objectClasses = @[MigrationTestObject.class];
@autoreleasepool { [RLMRealm realmWithConfiguration:config error:nil]; }
config.objectClasses = @[MigrationTestObject.class, ThreeFieldMigrationTestObject.class];
XCTAssertNoThrow([RLMRealm realmWithConfiguration:config error:nil]);
}
- (void)testRemovingClassDoesNotRequireMigration {
RLMRealmConfiguration *config = [RLMRealmConfiguration new];
config.objectClasses = @[MigrationTestObject.class, ThreeFieldMigrationTestObject.class];
@autoreleasepool { [RLMRealm realmWithConfiguration:config error:nil]; }
config.objectClasses = @[MigrationTestObject.class];
XCTAssertNoThrow([RLMRealm realmWithConfiguration:config error:nil]);
}
- (void)testAddingColumnRequiresMigration {
RLMObjectSchema *from = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
from.properties = [from.properties subarrayWithRange:{0, 1}];
RLMObjectSchema *to = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
[self assertMigrationRequiredForChangeFrom:@[from] to:@[to]];
}
- (void)testRemovingColumnRequiresMigration {
RLMObjectSchema *from = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
RLMObjectSchema *to = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
to.properties = [to.properties subarrayWithRange:{0, 1}];
[self assertMigrationRequiredForChangeFrom:@[from] to:@[to]];
}
- (void)testChangingColumnOrderDoesNotRequireMigration {
RLMObjectSchema *from = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
RLMObjectSchema *to = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
to.properties = @[to.properties[1], to.properties[0]];
[self assertNoMigrationRequiredForChangeFrom:@[from] to:@[to]];
}
- (void)testAddingIndexDoesNotRequireMigration {
RLMObjectSchema *from = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
RLMObjectSchema *to = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
[to.properties[0] setIndexed:YES];
[self assertNoMigrationRequiredForChangeFrom:@[from] to:@[to]];
}
- (void)testRemovingIndexDoesNotRequireMigration {
RLMObjectSchema *from = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
[from.properties[0] setIndexed:YES];
RLMObjectSchema *to = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
[self assertNoMigrationRequiredForChangeFrom:@[from] to:@[to]];
}
- (void)testAddingPrimaryKeyRequiresMigration {
RLMObjectSchema *from = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
RLMObjectSchema *to = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
to.primaryKeyProperty = to.properties[0];
[self assertMigrationRequiredForChangeFrom:@[from] to:@[to]];
}
- (void)testRemovingPrimaryKeyRequiresMigration {
RLMObjectSchema *from = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
from.primaryKeyProperty = from.properties[0];
RLMObjectSchema *to = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
[self assertMigrationRequiredForChangeFrom:@[from] to:@[to]];
}
- (void)testChangingPrimaryKeyRequiresMigration {
RLMObjectSchema *from = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
from.primaryKeyProperty = from.properties[0];
RLMObjectSchema *to = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
to.primaryKeyProperty = to.properties[1];
[self assertMigrationRequiredForChangeFrom:@[from] to:@[to]];
}
- (void)testMakingPropertyOptionalRequiresMigration {
RLMObjectSchema *from = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
[from.properties[0] setOptional:NO];
RLMObjectSchema *to = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
[self assertMigrationRequiredForChangeFrom:@[from] to:@[to]];
}
- (void)testMakingPropertyNonOptionalRequiresMigration {
RLMObjectSchema *from = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
RLMObjectSchema *to = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
[to.properties[0] setOptional:NO];
[self assertMigrationRequiredForChangeFrom:@[from] to:@[to]];
}
- (void)testChangingLinkTargetRequiresMigration {
NSArray *linkTargets = @[[RLMObjectSchema schemaForObjectClass:MigrationTestObject.class],
[RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class]];
RLMObjectSchema *from = [RLMObjectSchema schemaForObjectClass:MigrationLinkObject.class];
RLMObjectSchema *to = [RLMObjectSchema schemaForObjectClass:MigrationLinkObject.class];
[to.properties[0] setObjectClassName:@"MigrationTwoStringObject"];
[self assertMigrationRequiredForChangeFrom:[linkTargets arrayByAddingObject:from]
to:[linkTargets arrayByAddingObject:to]];
}
- (void)testChangingLinkListTargetRequiresMigration {
NSArray *linkTargets = @[[RLMObjectSchema schemaForObjectClass:MigrationTestObject.class],
[RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class]];
RLMObjectSchema *from = [RLMObjectSchema schemaForObjectClass:MigrationLinkObject.class];
RLMObjectSchema *to = [RLMObjectSchema schemaForObjectClass:MigrationLinkObject.class];
[to.properties[1] setObjectClassName:@"MigrationTwoStringObject"];
[self assertMigrationRequiredForChangeFrom:[linkTargets arrayByAddingObject:from]
to:[linkTargets arrayByAddingObject:to]];
}
- (void)testChangingPropertyTypesRequiresMigration {
RLMObjectSchema *from = [RLMObjectSchema schemaForObjectClass:MigrationTestObject.class];
RLMObjectSchema *to = [RLMObjectSchema schemaForObjectClass:MigrationTestObject.class];
to.objectClass = RLMObject.class;
RLMProperty *prop = to.properties[0];
RLMProperty *strProp = to.properties[1];
prop.type = strProp.type;
[self assertMigrationRequiredForChangeFrom:@[from] to:@[to]];
}
- (void)testDeleteRealmIfMigrationNeededWithSetCustomSchema {
RLMObjectSchema *from = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
from.properties = [from.properties subarrayWithRange:{0, 1}];
RLMObjectSchema *to = [RLMObjectSchema schemaForObjectClass:MigrationTwoStringObject.class];
RLMRealmConfiguration *config = [RLMRealmConfiguration new];
config.customSchema = [self schemaWithObjects:@[from]];
@autoreleasepool { [RLMRealm realmWithConfiguration:config error:nil]; }
config.customSchema = [self schemaWithObjects:@[to]];
config.migrationBlock = ^(__unused RLMMigration *migration, __unused uint64_t oldSchemaVersion) {
XCTFail(@"Migration block should not have been called");
};
config.deleteRealmIfMigrationNeeded = YES;
XCTAssertNoThrow([RLMRealm realmWithConfiguration:config error:nil]);
RLMAssertRealmSchemaMatchesTable(self, [RLMRealm realmWithConfiguration:config error:nil]);
}
- (void)testDeleteRealmIfMigrationNeeded {
for (uint64_t targetSchemaVersion = 1; targetSchemaVersion < 2; targetSchemaVersion++) {
RLMRealmConfiguration *configuration = [RLMRealmConfiguration defaultConfiguration];
RLMObjectSchema *objectSchema = [RLMObjectSchema schemaForObjectClass:MigrationTestObject.class];
configuration.customSchema = [self schemaWithObjects:@[objectSchema]];
@autoreleasepool {
[[NSFileManager defaultManager] removeItemAtURL:configuration.fileURL error:nil];
RLMRealm *realm = [RLMRealm realmWithConfiguration:configuration error:nil];
[realm transactionWithBlock:^{
[realm addObject:[MigrationTestObject new]];
}];
}
// Change string to int, requiring a migration
objectSchema.objectClass = RLMObject.class;
RLMProperty *stringCol = objectSchema.properties[1];
stringCol.type = RLMPropertyTypeInt;
stringCol.optional = NO;
objectSchema.properties = @[stringCol];
configuration.customSchema = [self schemaWithObjects:@[objectSchema]];
@autoreleasepool {
XCTAssertThrows([RLMRealm realmWithConfiguration:configuration error:nil]);
RLMRealmConfiguration *dynamicConfiguration = [RLMRealmConfiguration defaultConfiguration];
dynamicConfiguration.dynamic = YES;
XCTAssertFalse([[RLMRealm realmWithConfiguration:dynamicConfiguration error:nil] isEmpty]);
}
configuration.schemaVersion = targetSchemaVersion;
configuration.migrationBlock = ^(__unused RLMMigration *migration, __unused uint64_t oldSchemaVersion) {
XCTFail(@"Migration block should not have been called");
};
configuration.deleteRealmIfMigrationNeeded = YES;
RLMRealm *realm = [RLMRealm realmWithConfiguration:configuration error:nil];
RLMAssertRealmSchemaMatchesTable(self, realm);
XCTAssertTrue(realm.isEmpty);
}
}
#pragma mark - Allowed schema mismatches
- (void)testMismatchedIndexAllowedForReadOnly {
RLMObjectSchema *objectSchema = [RLMObjectSchema schemaForObjectClass:StringObject.class];
[objectSchema.properties[0] setIndexed:YES];
[self createTestRealmWithSchema:@[objectSchema] block:^(RLMRealm *) { }];
// should be able to open readonly with mismatched index schema
RLMRealmConfiguration *config = [self config];
config.readOnly = true;
RLMRealm *realm = [RLMRealm realmWithConfiguration:config error:nil];
auto& info = realm->_info[@"StringObject"];
XCTAssertTrue(info.table()->has_search_index(info.tableColumn(objectSchema.properties[0].name)));
}
- (void)testRearrangeProperties {
// create object in default realm
[RLMRealm.defaultRealm transactionWithBlock:^{
[CircleObject createInDefaultRealmWithValue:@[@"data", NSNull.null]];
}];
// create realm with the properties reversed
RLMSchema *schema = [[RLMSchema sharedSchema] copy];
RLMObjectSchema *objectSchema = schema[@"CircleObject"];
objectSchema.properties = @[objectSchema.properties[1], objectSchema.properties[0]];
RLMRealm *realm = [self realmWithTestPathAndSchema:schema];
[realm beginWriteTransaction];
// -createObject:withValue: takes values in the order the properties appear in the array
[realm createObject:CircleObject.className withValue:@[NSNull.null, @"data"]];
RLMAssertThrowsWithReasonMatching(([realm createObject:CircleObject.className withValue:@[@"data", NSNull.null]]),
@"Invalid value 'data' to initialize object of type 'CircleObject'");
[realm commitWriteTransaction];
// accessors should work
CircleObject *obj = [[CircleObject allObjectsInRealm:realm] firstObject];
XCTAssertEqualObjects(@"data", obj.data);
XCTAssertNil(obj.next);
[realm beginWriteTransaction];
XCTAssertNoThrow(obj.data = @"new data");
XCTAssertNoThrow(obj.next = obj);
[realm commitWriteTransaction];
// open the default Realm and make sure accessors with alternate ordering work
CircleObject *defaultObj = [[CircleObject allObjects] firstObject];
XCTAssertEqualObjects(defaultObj.data, @"data");
RLMAssertRealmSchemaMatchesTable(self, realm);
// re-check that things still work for the realm with the swapped order
XCTAssertEqualObjects(obj.data, @"new data");
[realm beginWriteTransaction];
[realm createObject:CircleObject.className withValue:@[NSNull.null, @"data"]];
RLMAssertThrowsWithReasonMatching(([realm createObject:CircleObject.className withValue:@[@"data", NSNull.null]]),
@"Invalid value 'data' to initialize object of type 'CircleObject'");
[realm commitWriteTransaction];
}
#pragma mark - Migration block invocatios
- (void)testMigrationBlockNotCalledForIntialRealmCreation {
RLMRealmConfiguration *config = [RLMRealmConfiguration new];
config.migrationBlock = ^(__unused RLMMigration *migration, __unused uint64_t oldSchemaVersion) {
XCTFail(@"Migration block should not have been called");
};
XCTAssertNoThrow([RLMRealm realmWithConfiguration:config error:nil]);
}
- (void)testMigrationBlockNotCalledWhenSchemaVersionIsUnchanged {
RLMRealmConfiguration *config = [RLMRealmConfiguration new];
config.schemaVersion = 1;
@autoreleasepool { XCTAssertNoThrow([RLMRealm realmWithConfiguration:config error:nil]); }
config.migrationBlock = ^(__unused RLMMigration *migration, __unused uint64_t oldSchemaVersion) {
XCTFail(@"Migration block should not have been called");
};
@autoreleasepool { XCTAssertNoThrow([RLMRealm realmWithConfiguration:config error:nil]); }
@autoreleasepool { XCTAssertTrue([RLMRealm performMigrationForConfiguration:config error:nil]); }
}
- (void)testMigrationBlockCalledWhenSchemaVersionHasChanged {
RLMRealmConfiguration *config = [RLMRealmConfiguration new];
config.schemaVersion = 1;
@autoreleasepool { XCTAssertNoThrow([RLMRealm realmWithConfiguration:config error:nil]); }
__block bool migrationCalled = false;
config.schemaVersion = 2;
config.migrationBlock = ^(__unused RLMMigration *migration, __unused uint64_t oldSchemaVersion) {
migrationCalled = true;
};
@autoreleasepool { XCTAssertNoThrow([RLMRealm realmWithConfiguration:config error:nil]); }
XCTAssertTrue(migrationCalled);
migrationCalled = false;
config.schemaVersion = 3;
@autoreleasepool { XCTAssertTrue([RLMRealm performMigrationForConfiguration:config error:nil]); }
XCTAssertTrue(migrationCalled);
}
#pragma mark - Async Migration
- (void)testAsyncMigration {
RLMRealmConfiguration *c = [RLMRealmConfiguration new];
c.schemaVersion = 1;
@autoreleasepool { XCTAssertNoThrow([RLMRealm realmWithConfiguration:c error:nil]); }
XCTAssertNil(RLMGetAnyCachedRealmForPath(c.pathOnDisk.UTF8String));
XCTestExpectation *ex = [self expectationWithDescription:@"async-migration"];
__block bool migrationCalled = false;
c.schemaVersion = 2;
c.migrationBlock = ^(__unused RLMMigration *migration, __unused uint64_t oldSchemaVersion) {
migrationCalled = true;
};
[RLMRealm asyncOpenWithConfiguration:c
callbackQueue:dispatch_get_main_queue()
callback:^(RLMRealm * _Nullable realm, NSError * _Nullable error) {
XCTAssertTrue(migrationCalled);
XCTAssertNil(error);
XCTAssertNotNil(realm);
[ex fulfill];
}];
XCTAssertFalse(migrationCalled);
XCTAssertNil(RLMGetAnyCachedRealmForPath(c.pathOnDisk.UTF8String));
[self waitForExpectationsWithTimeout:1 handler:nil];
XCTAssertTrue(migrationCalled);
XCTAssertNil(RLMGetAnyCachedRealmForPath(c.pathOnDisk.UTF8String));
}
#pragma mark - Migration Correctness
- (void)testRemovingSubclass {
RLMProperty *prop = [[RLMProperty alloc] initWithName:@"id"
type:RLMPropertyTypeInt
objectClassName:nil
linkOriginPropertyName:nil
indexed:NO
optional:NO];
RLMObjectSchema *objectSchema = [[RLMObjectSchema alloc] initWithClassName:@"DeletedClass" objectClass:RLMObject.class properties:@[prop]];
[self createTestRealmWithSchema:@[objectSchema] block:^(RLMRealm *realm) {
[realm createObject:@"DeletedClass" withValue:@[@0]];
}];
// apply migration
RLMRealm *realm = [self migrateTestRealmWithBlock:^(RLMMigration *migration, uint64_t oldSchemaVersion) {
XCTAssertEqual(oldSchemaVersion, 0U, @"Initial schema version should be 0");
XCTAssertTrue([migration deleteDataForClassName:@"DeletedClass"]);
XCTAssertFalse([migration deleteDataForClassName:@"NoSuchClass"]);
XCTAssertFalse([migration deleteDataForClassName:self.nonLiteralNil]);
[migration createObject:StringObject.className withValue:@[@"migration"]];
XCTAssertTrue([migration deleteDataForClassName:StringObject.className]);
}];
XCTAssertFalse(ObjectStore::table_for_object_type(realm.group, "DeletedClass"), @"The deleted class should not have a table.");
XCTAssertEqual(0U, [StringObject allObjectsInRealm:realm].count);
}
- (void)testAddingPropertyAtEnd {
// create schema to migrate from with single string column
RLMObjectSchema *objectSchema = [RLMObjectSchema schemaForObjectClass:MigrationTestObject.class];
objectSchema.properties = @[objectSchema.properties[0]];
[self createTestRealmWithSchema:@[objectSchema] block:^(RLMRealm *realm) {
[realm createObject:MigrationTestObject.className withValue:@[@1]];
[realm createObject:MigrationTestObject.className withValue:@[@2]];
}];
// apply migration
RLMRealm *realm = [self migrateTestRealmWithBlock:^(RLMMigration *migration, uint64_t oldSchemaVersion) {
XCTAssertEqual(oldSchemaVersion, 0U, @"Initial schema version should be 0");
[migration enumerateObjects:MigrationTestObject.className
block:^(RLMObject *oldObject, RLMObject *newObject) {
XCTAssertThrows(oldObject[@"stringCol"], @"stringCol should not exist on old object");
NSNumber *intObj;
XCTAssertNoThrow(intObj = oldObject[@"intCol"], @"Should be able to access intCol on oldObject");
XCTAssertEqualObjects(newObject[@"intCol"], oldObject[@"intCol"]);
NSString *stringObj = [NSString stringWithFormat:@"%@", intObj];
XCTAssertNoThrow(newObject[@"stringCol"] = stringObj, @"Should be able to set stringCol");
}];
}];
// verify migration
MigrationTestObject *mig1 = [MigrationTestObject allObjectsInRealm:realm][1];
XCTAssertEqual(mig1.intCol, 2, @"Int column should have value 2");
XCTAssertEqualObjects(mig1.stringCol, @"2", @"String column should be populated");
}
- (void)testAddingPropertyAtBeginningPreservesData {
// create schema to migrate from with the second and third columns from the final data
RLMObjectSchema *objectSchema = [RLMObjectSchema schemaForObjectClass:ThreeFieldMigrationTestObject.class];
objectSchema.properties = @[objectSchema.properties[1], objectSchema.properties[2]];
[self createTestRealmWithSchema:@[objectSchema] block:^(RLMRealm *realm) {
[realm createObject:ThreeFieldMigrationTestObject.className withValue:@[@1, @2]];
}];
RLMRealm *realm = [self migrateTestRealmWithBlock:^(RLMMigration *migration, uint64_t) {
[migration enumerateObjects:ThreeFieldMigrationTestObject.className
block:^(RLMObject *oldObject, RLMObject *newObject) {
XCTAssertThrows(oldObject[@"col1"]);
XCTAssertEqualObjects(oldObject[@"col2"], newObject[@"col2"]);
XCTAssertEqualObjects(oldObject[@"col3"], newObject[@"col3"]);
}];
}];
// verify migration
ThreeFieldMigrationTestObject *mig = [ThreeFieldMigrationTestObject allObjectsInRealm:realm][0];
XCTAssertEqual(0, mig.col1);
XCTAssertEqual(1, mig.col2);
XCTAssertEqual(2, mig.col3);
}
- (void)testRemoveProperty {
// create schema with an extra column
RLMObjectSchema *objectSchema = [RLMObjectSchema schemaForObjectClass:MigrationTestObject.class];
RLMProperty *thirdProperty = [[RLMProperty alloc] initWithName:@"deletedCol" type:RLMPropertyTypeBool objectClassName:nil linkOriginPropertyName:nil indexed:NO optional:NO];
objectSchema.properties = [objectSchema.properties arrayByAddingObject:thirdProperty];
// create realm with old schema and populate
[self createTestRealmWithSchema:@[objectSchema] block:^(RLMRealm *realm) {
[realm createObject:MigrationTestObject.className withValue:@[@1, @"1", @YES]];
[realm createObject:MigrationTestObject.className withValue:@[@2, @"2", @NO]];
}];
// apply migration
RLMRealm *realm = [self migrateTestRealmWithBlock:^(RLMMigration *migration, uint64_t oldSchemaVersion) {
XCTAssertEqual(oldSchemaVersion, 0U, @"Initial schema version should be 0");
[migration enumerateObjects:MigrationTestObject.className
block:^(RLMObject *oldObject, RLMObject *newObject) {
XCTAssertNoThrow(oldObject[@"deletedCol"], @"Deleted column should be accessible on old object.");
XCTAssertThrows(newObject[@"deletedCol"], @"Deleted column should not be accessible on new object.");
XCTAssertEqualObjects(newObject[@"intCol"], oldObject[@"intCol"]);
XCTAssertEqualObjects(newObject[@"stringCol"], oldObject[@"stringCol"]);
}];
}];
// verify migration
MigrationTestObject *mig1 = [MigrationTestObject allObjectsInRealm:realm][1];
XCTAssertThrows(mig1[@"deletedCol"], @"Deleted column should no longer be accessible.");
}
- (void)testRemoveAndAddProperty {
// create schema to migrate from with single string column
RLMObjectSchema *objectSchema = [RLMObjectSchema schemaForObjectClass:MigrationTestObject.class];
RLMProperty *oldInt = [[RLMProperty alloc] initWithName:@"oldIntCol" type:RLMPropertyTypeInt objectClassName:nil linkOriginPropertyName:nil indexed:NO optional:NO];
objectSchema.properties = @[oldInt, objectSchema.properties[1]];
// create realm with old schema and populate
[self createTestRealmWithSchema:@[objectSchema] block:^(RLMRealm *realm) {
[realm createObject:MigrationTestObject.className withValue:@[@1, @"1"]];
[realm createObject:MigrationTestObject.className withValue:@[@1, @"2"]];
}];
// object migration object
void (^migrateObjectBlock)(RLMObject *, RLMObject *) = ^(RLMObject *oldObject, RLMObject *newObject) {
XCTAssertNoThrow(oldObject[@"oldIntCol"], @"Deleted column should be accessible on old object.");
XCTAssertThrows(oldObject[@"intCol"], @"New column should not be accessible on old object.");
XCTAssertEqual([oldObject[@"oldIntCol"] intValue], 1, @"Deleted column value is correct.");
XCTAssertNoThrow(newObject[@"intCol"], @"New column is accessible on new object.");
XCTAssertThrows(newObject[@"oldIntCol"], @"Old column should not be accessible on old object.");
XCTAssertEqual([newObject[@"intCol"] intValue], 0, @"New column value is uninitialized.");
};
// apply migration
RLMRealm *realm = [self migrateTestRealmWithBlock:^(RLMMigration *migration, uint64_t oldSchemaVersion) {
XCTAssertEqual(oldSchemaVersion, 0U, @"Initial schema version should be 0");
[migration enumerateObjects:MigrationTestObject.className block:migrateObjectBlock];
}];
// verify migration
MigrationTestObject *mig1 = [MigrationTestObject allObjectsInRealm:realm][1];
XCTAssertThrows(mig1[@"oldIntCol"], @"Deleted column should no longer be accessible.");
}
- (void)testChangePropertyType {
// make string an int
RLMObjectSchema *objectSchema = [RLMObjectSchema schemaForObjectClass:MigrationTestObject.class];
objectSchema.objectClass = RLMObject.class;
RLMProperty *stringCol = objectSchema.properties[1];
stringCol.type = RLMPropertyTypeInt;
stringCol.optional = NO;
// create realm with old schema and populate
[self createTestRealmWithSchema:@[objectSchema] block:^(RLMRealm *realm) {
[realm createObject:MigrationTestObject.className withValue:@[@1, @1]];
[realm createObject:MigrationTestObject.className withValue:@[@2, @2]];
}];
// apply migration
RLMRealm *realm = [self migrateTestRealmWithBlock:^(RLMMigration *migration, uint64_t oldSchemaVersion) {
XCTAssertEqual(oldSchemaVersion, 0U, @"Initial schema version should be 0");
[migration enumerateObjects:MigrationTestObject.className
block:^(RLMObject *oldObject, RLMObject *newObject) {
XCTAssertEqualObjects(newObject[@"intCol"], oldObject[@"intCol"]);
NSNumber *intObj = oldObject[@"stringCol"];
XCTAssert([intObj isKindOfClass:NSNumber.class], @"Old stringCol should be int");
newObject[@"stringCol"] = intObj.stringValue;
}];
}];
// verify migration
MigrationTestObject *mig1 = [MigrationTestObject allObjectsInRealm:realm][1];
XCTAssertEqualObjects(mig1[@"stringCol"], @"2", @"stringCol should be string after migration.");
}
- (void)testChangeObjectLinkType {
// create realm with old schema and populate
[self createTestRealmWithSchema:RLMSchema.sharedSchema.objectSchema block:^(RLMRealm *realm) {
id obj = [realm createObject:MigrationTestObject.className withValue:@[@1, @"1"]];
[realm createObject:MigrationLinkObject.className withValue:@[obj, @[obj]]];
}];
// Make the object link property link to a different class
RLMRealmConfiguration *config = self.config;
RLMObjectSchema *objectSchema = [RLMObjectSchema schemaForObjectClass:MigrationLinkObject.class];
[objectSchema.properties[0] setObjectClassName:MigrationLinkObject.className];
config.customSchema = [self schemaWithObjects:@[objectSchema, [RLMObjectSchema schemaForObjectClass:MigrationTestObject.class]]];
// Apply migration
config.schemaVersion = 1;
config.migrationBlock = ^(RLMMigration *migration, uint64_t oldSchemaVersion) {
XCTAssertEqual(oldSchemaVersion, 0U, @"Initial schema version should be 0");
[migration enumerateObjects:MigrationLinkObject.className
block:^(RLMObject *oldObject, RLMObject *newObject) {
XCTAssertNotNil(oldObject[@"object"]);
XCTAssertNil(newObject[@"object"]);
XCTAssertEqual(1U, [oldObject[@"array"] count]);
XCTAssertEqual(1U, [newObject[@"array"] count]);
}];
};
RLMRealm *realm = [RLMRealm realmWithConfiguration:config error:nil];
RLMAssertRealmSchemaMatchesTable(self, realm);
}
- (void)testChangeArrayLinkType {
// create realm with old schema and populate
RLMRealmConfiguration *config = [self config];
[self createTestRealmWithSchema:RLMSchema.sharedSchema.objectSchema block:^(RLMRealm *realm) {
id obj = [realm createObject:MigrationTestObject.className withValue:@[@1, @"1"]];
[realm createObject:MigrationLinkObject.className withValue:@[obj, @[obj]]];
}];
// Make the array linklist property link to a different class
RLMObjectSchema *objectSchema = [RLMObjectSchema schemaForObjectClass:MigrationLinkObject.class];
[objectSchema.properties[1] setObjectClassName:MigrationLinkObject.className];
config.customSchema = [self schemaWithObjects:@[objectSchema, [RLMObjectSchema schemaForObjectClass:MigrationTestObject.class]]];
// Apply migration
config.schemaVersion = 1;
config.migrationBlock = ^(RLMMigration *migration, uint64_t oldSchemaVersion) {
XCTAssertEqual(oldSchemaVersion, 0U, @"Initial schema version should be 0");
[migration enumerateObjects:MigrationLinkObject.className
block:^(RLMObject *oldObject, RLMObject *newObject) {
XCTAssertNotNil(oldObject[@"object"]);
XCTAssertNotNil(newObject[@"object"]);
XCTAssertEqual(1U, [oldObject[@"array"] count]);
XCTAssertEqual(0U, [newObject[@"array"] count]);
}];
};
RLMRealm *realm = [RLMRealm realmWithConfiguration:config error:nil];
RLMAssertRealmSchemaMatchesTable(self, realm);
}
- (void)testMakingPropertyPrimaryPreservesValues {
RLMObjectSchema *objectSchema = [RLMObjectSchema schemaForObjectClass:MigrationStringPrimaryKeyObject.class];
objectSchema.primaryKeyProperty = nil;
[self createTestRealmWithSchema:@[objectSchema] block:^(RLMRealm *realm) {
[realm createObject:MigrationStringPrimaryKeyObject.className withValue:@[@"1"]];
[realm createObject:MigrationStringPrimaryKeyObject.className withValue:@[@"2"]];
}];
RLMRealm *realm = [self migrateTestRealmWithBlock:nil];
RLMResults *objects = [MigrationStringPrimaryKeyObject allObjectsInRealm:realm];
XCTAssertEqualObjects(@"1", [objects[0] stringCol]);
XCTAssertEqualObjects(@"2", [objects[1] stringCol]);
}
- (void)testAddingPrimaryKeyShouldRejectDuplicateValues {
// make the pk non-primary so that we can add duplicate values
RLMObjectSchema *objectSchema = [RLMObjectSchema schemaForObjectClass:MigrationPrimaryKeyObject.class];
objectSchema.primaryKeyProperty = nil;
[self createTestRealmWithSchema:@[objectSchema] block:^(RLMRealm *realm) {
// populate with values that will be invalid when the property is made primary
[realm createObject:MigrationPrimaryKeyObject.className withValue:@[@1]];
[realm createObject:MigrationPrimaryKeyObject.className withValue:@[@1]];
}];
// Fails due to duplicate values
[self failToMigrateTestRealmWithBlock:nil];
// apply good migration that deletes duplicates
RLMRealm *realm = [self migrateTestRealmWithBlock:^(RLMMigration *migration, uint64_t) {
NSMutableSet *seen = [NSMutableSet set];
__block bool duplicateDeleted = false;
[migration enumerateObjects:@"MigrationPrimaryKeyObject" block:^(__unused RLMObject *oldObject, RLMObject *newObject) {
if ([seen containsObject:newObject[@"intCol"]]) {
duplicateDeleted = true;
[migration deleteObject:newObject];
}
else {
[seen addObject:newObject[@"intCol"]];
}
}];
XCTAssertEqual(true, duplicateDeleted);
}];
// make sure deletion occurred
XCTAssertEqual(1U, [[MigrationPrimaryKeyObject allObjectsInRealm:realm] count]);
}
- (void)testIncompleteMigrationIsRolledBack {
RLMObjectSchema *objectSchema = [RLMObjectSchema schemaForObjectClass:MigrationPrimaryKeyObject.class];
objectSchema.primaryKeyProperty = nil;
[self createTestRealmWithSchema:@[objectSchema] block:^(RLMRealm *realm) {
[realm createObject:MigrationPrimaryKeyObject.className withValue:@[@1]];
[realm createObject:MigrationPrimaryKeyObject.className withValue:@[@1]];
}];
// fail to apply migration
[self failToMigrateTestRealmWithBlock:nil];
// should still be able to open with pre-migration schema
XCTAssertNoThrow([self realmWithSingleObject:objectSchema]);
}
- (void)testAddObjectDuringMigration {
// initialize realm
@autoreleasepool { [self realmWithTestPath]; }
RLMRealm *realm = [self migrateTestRealmWithBlock:^(RLMMigration * migration, uint64_t) {
[migration createObject:StringObject.className withValue:@[@"string"]];
}];
XCTAssertEqual(1U, [StringObject allObjectsInRealm:realm].count);