Added UserDaoTest

kozmi55 · Aug 28, 2017 · 8cebc89 · 8cebc89
1 parent ca29cad
commit 8cebc89
Showing 1 changed file with 100 additions and 0 deletions.
diff --git a/...idTest/java/com/example/tamaskozmer/kotlinrxexample/model/persistence/daos/UserDaoTest.kt b/...idTest/java/com/example/tamaskozmer/kotlinrxexample/model/persistence/daos/UserDaoTest.kt
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+package com.example.tamaskozmer.kotlinrxexample.model.persistence.daos
+
+import android.arch.persistence.room.Room
+import android.support.test.InstrumentationRegistry
+import android.support.test.runner.AndroidJUnit4
+import com.example.tamaskozmer.kotlinrxexample.model.entities.User
+import com.example.tamaskozmer.kotlinrxexample.model.persistence.AppDatabase
+import org.junit.After
+import org.junit.Assert
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+
+/**
+ * Created by Tamas_Kozmer on 7/24/2017.
+ */
+@RunWith(AndroidJUnit4::class)
+class UserDaoTest {
+
+    lateinit var userDao: UserDao
+    lateinit var database: AppDatabase
+
+    @Before
+    fun setup() {
+        val context = InstrumentationRegistry.getTargetContext()
+        database = Room.inMemoryDatabaseBuilder(context, AppDatabase::class.java).build()
+        userDao = database.userDao()
+    }
+
+    @After
+    fun tearDown() {
+        database.close()
+    }
+
+    @Test
+    fun testInsertedAndRetrievedUsersMatch() {
+        val users = listOf(User(1, "Name", 100, "url"), User())
+        userDao.insertAll(users)
+
+        val allUsers = userDao.getUsers(1)
+        Assert.assertEquals(users, allUsers)
+    }
+
+    @Test
+    fun testUsersOrderedByCorrectly() {
+        val users = listOf(
+                User(1, "Name", 100, "url"),
+                User(2, "Name2", 500, "url"),
+                User(3, "Name3", 300, "url"))
+        userDao.insertAll(users)
+
+        val allUsers = userDao.getUsers(1)
+        val expectedUsers = users.sortedByDescending { it.reputation }
+        Assert.assertEquals(expectedUsers, allUsers)
+    }
+
+    @Test
+    fun testConflictingInsertsReplaceUsers() {
+        val users = listOf(
+                User(1, "Name", 100, "url"),
+                User(2, "Name2", 500, "url"),
+                User(3, "Name3", 300, "url"))
+
+        val users2 = listOf(
+                User(1, "Name", 1000, "url"),
+                User(2, "Name2", 700, "url"),
+                User(4, "Name3", 5500, "url"))
+        userDao.insertAll(users)
+        userDao.insertAll(users2)
+
+        val allUsers = userDao.getUsers(1)
+        val expectedUsers = listOf(
+                User(4, "Name3", 5500, "url"),
+                User(1, "Name", 1000, "url"),
+                User(2, "Name2", 700, "url"),
+                User(3, "Name3", 300, "url"))
+
+        Assert.assertEquals(expectedUsers, allUsers)
+    }
+
+    @Test
+    fun testLimitUsersPerPage_FirstPageOnly30Items() {
+        val users = (1..40L).map { User(it, "Name $it", it *100, "url") }
+
+        userDao.insertAll(users)
+
+        val retrievedUsers = userDao.getUsers(1)
+        Assert.assertEquals(30, retrievedUsers.size)
+    }
+
+    @Test
+    fun testRequestSecondPage_LimitUsersPerPage_showOnlyRemainingItems() {
+        val users = (1..40L).map { User(it, "Name $it", it *100, "url") }
+
+        userDao.insertAll(users)
+
+        val retrievedUsers = userDao.getUsers(2)
+        Assert.assertEquals(10, retrievedUsers.size)
+    }
+}