From b5d442ba3c86500b23d5bff8f1eb80ab51d1ccfa Mon Sep 17 00:00:00 2001
From: Allan Wang <me@allanwang.ca>
Date: Tue, 5 Mar 2019 19:13:57 -0500
Subject: Add more cookie db tests

---
 .../com/pitchedapps/frost/db/FrostDatabaseTest.kt  | 41 ++++++++++++++++++++--
 .../kotlin/com/pitchedapps/frost/db/FbTabsDb.kt    | 31 +++++++++-------
 2 files changed, 58 insertions(+), 14 deletions(-)

(limited to 'app')

diff --git a/app/src/androidTest/kotlin/com/pitchedapps/frost/db/FrostDatabaseTest.kt b/app/src/androidTest/kotlin/com/pitchedapps/frost/db/FrostDatabaseTest.kt
index 2d94ed97..dcc96c2d 100644
--- a/app/src/androidTest/kotlin/com/pitchedapps/frost/db/FrostDatabaseTest.kt
+++ b/app/src/androidTest/kotlin/com/pitchedapps/frost/db/FrostDatabaseTest.kt
@@ -5,7 +5,6 @@ import androidx.room.Room
 import androidx.test.core.app.ApplicationProvider
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import kotlinx.coroutines.runBlocking
-import org.junit.Rule
 import org.junit.runner.RunWith
 import kotlin.test.AfterTest
 import kotlin.test.BeforeTest
@@ -35,7 +34,7 @@ class FrostDatabaseTest {
     }
 
     @Test
-    fun basic() {
+    fun basicCookie() {
         val cookie = CookieEntity(id = 1234L, name = "testName", cookie = "testCookie")
         runBlocking {
             db.cookieDao().insertCookie(cookie)
@@ -43,4 +42,42 @@ class FrostDatabaseTest {
             assertEquals(listOf(cookie), cookies, "Cookie mismatch")
         }
     }
+
+    @Test
+    fun deleteCookie() {
+        val cookie = CookieEntity(id = 1234L, name = "testName", cookie = "testCookie")
+
+        runBlocking {
+            db.cookieDao().insertCookie(cookie)
+            db.cookieDao().deleteById(cookie.id + 1)
+            assertEquals(
+                listOf(cookie),
+                db.cookieDao().selectAll(),
+                "Cookie list should be the same after inexistent deletion"
+            )
+            db.cookieDao().deleteById(cookie.id)
+            assertEquals(emptyList(), db.cookieDao().selectAll(), "Cookie list should be empty after deletion")
+        }
+    }
+
+    @Test
+    fun insertCookie() {
+        val cookie = CookieEntity(id = 1234L, name = "testName", cookie = "testCookie")
+        runBlocking {
+            db.cookieDao().insertCookie(cookie)
+            assertEquals(listOf(cookie), db.cookieDao().selectAll(), "Cookie insertion failed")
+            db.cookieDao().insertCookie(cookie.copy(name = "testName2"))
+            assertEquals(
+                listOf(cookie.copy(name = "testName2")),
+                db.cookieDao().selectAll(),
+                "Cookie replacement failed"
+            )
+            db.cookieDao().insertCookie(cookie.copy(id = 123L))
+            assertEquals(
+                setOf(cookie.copy(id = 123L), cookie.copy(name = "testName2")),
+                db.cookieDao().selectAll().toSet(),
+                "New cookie insertion failed"
+            )
+        }
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/kotlin/com/pitchedapps/frost/db/FbTabsDb.kt b/app/src/main/kotlin/com/pitchedapps/frost/db/FbTabsDb.kt
index ff64f5eb..44e62938 100644
--- a/app/src/main/kotlin/com/pitchedapps/frost/db/FbTabsDb.kt
+++ b/app/src/main/kotlin/com/pitchedapps/frost/db/FbTabsDb.kt
@@ -33,6 +33,8 @@ import com.raizlabs.android.dbflow.kotlinextensions.fastSave
 import com.raizlabs.android.dbflow.kotlinextensions.from
 import com.raizlabs.android.dbflow.kotlinextensions.select
 import com.raizlabs.android.dbflow.structure.BaseModel
+import kotlinx.coroutines.NonCancellable
+import kotlinx.coroutines.withContext
 
 /**
  * Created by Allan Wang on 2017-05-30.
@@ -52,21 +54,26 @@ interface FbTabDao {
 
     @Insert(onConflict = OnConflictStrategy.REPLACE)
     suspend fun _insertAll(items: List<FbTabEntity>)
-
-    @Transaction
-    suspend fun _save(items: List<FbTabEntity>) {
-        _deleteAll()
-        _insertAll(items)
-    }
 }
 
+/**
+ * Saving tabs operates by deleting all db items and saving the new list.
+ * Transactions can't be done with suspensions in room as switching threads during the process
+ * may result in a deadlock.
+ * In this case, there may be a chance that the 'transaction' completes partially,
+ * but we'll just fallback to the default anyways.
+ */
 suspend fun FbTabDao.save(items: List<FbItem>) {
-    _save((items.takeIf { it.isNotEmpty() } ?: defaultTabs()).mapIndexed { index, fbItem ->
-        FbTabEntity(
-            index,
-            fbItem
-        )
-    })
+    withContext(NonCancellable) {
+        _deleteAll()
+        val entities = (items.takeIf { it.isNotEmpty() } ?: defaultTabs()).mapIndexed { index, fbItem ->
+            FbTabEntity(
+                index,
+                fbItem
+            )
+        }
+        _insertAll(entities)
+    }
 }
 
 suspend fun FbTabDao.selectAll(): List<FbItem> = _selectAll().map { it.tab }.takeIf { it.isNotEmpty() } ?: defaultTabs()
-- 
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