Fix reentrant deadlock

app/src/androidTest/java/org/tasks/data/CaldavDaoExtensionsTest.kt

@@ -0,0 +1,25 @@
+package org.tasks.data
+
+import dagger.hilt.android.testing.HiltAndroidTest
+import kotlinx.coroutines.runBlocking
+import kotlinx.coroutines.withTimeout
+import org.junit.Assert.assertTrue
+import org.junit.Test
+import org.tasks.data.dao.CaldavDao
+import org.tasks.data.entity.CaldavAccount
+import org.tasks.injection.InjectingTestCase
+import javax.inject.Inject
+
+@HiltAndroidTest
+class CaldavDaoExtensionsTest : InjectingTestCase() {
+    @Inject lateinit var caldavDao: CaldavDao
+
+    @Test
+    fun getLocalListCreatesAccountIfNeeded() = runBlocking {
+        withTimeout(5000L) {
+            assertTrue(caldavDao.getAccounts().isEmpty())
+            caldavDao.getLocalList()
+            assertTrue(caldavDao.getAccounts(CaldavAccount.TYPE_LOCAL).isNotEmpty())
+        }
+    }
+}

kmp/src/commonMain/kotlin/org/tasks/data/CaldavDaoExtensions.kt

@@ -12,6 +12,17 @@ import tasks.kmp.generated.resources.default_list
 private val mutex = Mutex()
 
 suspend fun CaldavDao.newLocalAccount(): CaldavAccount = mutex.withLock {
+    newLocalAccountUnsafe()
+}
+
+suspend fun CaldavDao.getLocalList() = mutex.withLock {
+    getLocalList(getLocalAccount())
+}
+
+suspend fun CaldavDao.getLocalAccount() =
+    getAccounts(CaldavAccount.TYPE_LOCAL).firstOrNull() ?: newLocalAccountUnsafe()
+
+private suspend fun CaldavDao.newLocalAccountUnsafe(): CaldavAccount {
     val account = CaldavAccount(
         accountType = CaldavAccount.TYPE_LOCAL,
         uuid = UUIDHelper.newUUID(),
@@ -21,13 +32,6 @@ suspend fun CaldavDao.newLocalAccount(): CaldavAccount = mutex.withLock {
     return account
 }
 
-suspend fun CaldavDao.getLocalList() = mutex.withLock {
-    getLocalList(getLocalAccount())
-}
-
-suspend fun CaldavDao.getLocalAccount() =
-    getAccounts(CaldavAccount.TYPE_LOCAL).firstOrNull() ?: newLocalAccount()
-
 private suspend fun CaldavDao.getLocalList(account: CaldavAccount): CaldavCalendar =
     getCalendarsByAccount(account.uuid!!).getOrNull(0)
         ?: CaldavCalendar(