Realm file for unit testing path permission (Xcode, Swift) - ios

Question

Please forgive me if there is answered question similar to this. I tried to find any but couldn't find it
Hi guys, i am having problem with running Realm file for my unit testing
So i have moved the realm files to my project test folder
SampleAppTest
+ SampleAppTest.swift
+ SampleRealm.realm
I can successfully located the realm file, however, when I tried to instantiate the Realm connection, it threw me an error saying
Please use a path where your app has read-write permissions.
let bundle = Bundle(for: type(of: self))
if let path = bundle.path(forResource: "SampleRealm", ofType: "realm") {
let realmLocationURL = URL(string: path)
let realmVersion: UInt64 = 1
let config = Realm.Configuration(fileURL: realmLocationURL, schemaVersion: realmVersion, migrationBlock: { migration, oldSchemaVersion in
if (oldSchemaVersion < realmVersion) {}
}
)
let realm = try! Realm(configuration: config) // throws error
}
else {
print("path not found")
}
Folder access in Finder -> Get Info -> Read & Write
So in general, where can I put a file that my app has a permission to read-write? Is there a possible way to put within the project so that other team member that clone the project can also run the test with same realm file? Thank you

Answer 1

Storing Realm in your App Bundle makes it a read only realm so I don't think that was the intention.
The default location Realm uses for your Realm files is always a good bet - however, it won't travel with your project files.
During development, we often store our realm file with the project - that way if the project is compressed, sent or shared (or put it on dropbox) the file is always available and is read/write. Here's some code to do that:
func gGetRealm() -> Realm? {
do {
let fileUrl = URL(fileURLWithPath: #file)
let projectSubUrl = fileUrl.deletingLastPathComponent() //the project files folder
let projectUrl = projectSubUrl.deletingLastPathComponent() //the project folder
let realmURL = projectUrl.appendingPathComponent("default.realm")
var config = Realm.Configuration.defaultConfiguration
config.fileURL = realmURL
let realm = try Realm.init(configuration: config)
return realm
} catch let error as NSError { //just throw the error to the console
print("Error!")
print(" " + error.localizedDescription)
let err = error.code
print(err)
let t = type(of: err)
print(t)
return nil
}
}
This is global function to get the Realm stored within the project file - use is
guard let realm = gGetRealm() else { return }
let results = realm.objects(MyObject.self)