Unit Test: Repository & UseCase

android/app/build.gradle.kts

@@ -27,6 +27,7 @@ android {
         vectorDrawables {
             useSupportLibrary = true
         }
+        // testFunctionalTest = true
 
         // get properties from `local.properties`
         buildConfigField("String", "API_BASE_URL", getProperty("API_BASE_URL"))
@@ -42,27 +43,47 @@ android {
         }
     }
 
+    buildFeatures {
+        compose = true
+        buildConfig = true
+    }
+
     compileOptions {
         sourceCompatibility = JavaVersion.VERSION_17
         targetCompatibility = JavaVersion.VERSION_17
     }
 
+    composeOptions {
+        kotlinCompilerExtensionVersion = "1.4.3"
+    }
+
     kotlinOptions {
         jvmTarget = "17"
     }
 
-    buildFeatures {
-        compose = true
-        buildConfig = true
+    packaging {
+        resources {
+            excludes += "/META-INF/{AL2.0,LGPL2.1}"
+        }
     }
 
-    composeOptions {
-        kotlinCompilerExtensionVersion = "1.4.3"
+    testOptions {
+        unitTests {
+            isIncludeAndroidResources = true
+            isReturnDefaultValues = true
+        }
+        animationsDisabled = true
     }
 
-    packaging {
-        resources {
-            excludes += "/META-INF/{AL2.0,LGPL2.1}"
+    sourceSets {
+        getByName("main") {
+            resources.srcDirs("src/main/assets")
+        }
+        getByName("test") {
+            resources.srcDirs("src/main/assets")
+        }
+        getByName("androidTest") {
+            resources.srcDirs("src/main/assets")
         }
     }
 
@@ -76,6 +97,7 @@ dependencies {
 
     implementation("androidx.core:core-ktx:1.9.0")
     implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.6.2")
+    implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:2.6.2")
 
     // jetpack compose
     implementation("androidx.activity:activity-compose:1.8.0")
@@ -94,7 +116,10 @@ dependencies {
 
     // test tools
     testImplementation("junit:junit:4.13.2")
+    testImplementation("io.mockk:mockk:1.13.5")
     testImplementation("androidx.test.ext:junit:1.1.5")
+    testImplementation("androidx.paging:paging-testing:3.2.1")
+    testImplementation ("org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.4")
     androidTestImplementation("androidx.test.ext:junit:1.1.5")
     androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")
     androidTestImplementation(platform("androidx.compose:compose-bom:2023.03.00"))
@@ -105,6 +130,8 @@ dependencies {
     // hilt
     implementation("com.google.dagger:hilt-android:2.44")
     kapt("com.google.dagger:hilt-android-compiler:2.44")
+    kaptTest("com.google.dagger:hilt-android-compiler:2.44")
+    kaptAndroidTest("com.google.dagger:hilt-android-compiler:2.44")
 
     // navigation
     implementation("androidx.navigation:navigation-compose:2.5.3")

android/app/src/main/java/com/goliath/emojihub/EmojiHubApplication.kt

@@ -1,13 +1,14 @@
 package com.goliath.emojihub
 
 import android.app.Application
+import com.goliath.emojihub.data_sources.LocalStorage
 import com.goliath.emojihub.data_sources.SharedLocalStorage
 import dagger.hilt.android.HiltAndroidApp
 
 @HiltAndroidApp
 class EmojiHubApplication: Application() {
     companion object {
-        lateinit var preferences: SharedLocalStorage
+        lateinit var preferences: LocalStorage
     }
 
     override fun onCreate() {

android/app/src/main/java/com/goliath/emojihub/data_sources/SharedLocalStorage.kt

@@ -6,14 +6,18 @@ import android.content.SharedPreferences
 import dagger.hilt.android.qualifiers.ApplicationContext
 import javax.inject.Singleton
 
+interface LocalStorage {
+    var accessToken: String?
+}
+
 @Singleton
 class SharedLocalStorage(
     @ApplicationContext private val context: Context
-) {
+) : LocalStorage {
     private val preferences: SharedPreferences =
         context.getSharedPreferences("EMOJI_HUB", MODE_PRIVATE)
 
-    var accessToken: String?
+    override var accessToken: String?
         get() = preferences.getString("accessToken", "")
         set(value) = preferences.edit().putString("accessToken", value).apply()
 }

android/app/src/main/java/com/goliath/emojihub/repositories/remote/EmojiRepository.kt

@@ -3,7 +3,6 @@ package com.goliath.emojihub.repositories.remote
 import android.util.Log
 import com.goliath.emojihub.data_sources.api.EmojiApi
 import com.goliath.emojihub.models.EmojiDto
-import com.goliath.emojihub.models.FetchEmojiListDto
 import com.goliath.emojihub.models.UploadEmojiDto
 import com.google.gson.Gson
 import okhttp3.MediaType
@@ -64,12 +63,14 @@ class EmojiRepositoryImpl @Inject constructor(
         }
         catch (e: IOException) {
             Log.d("EmojiRepository", "IOException")
-            e.printStackTrace()
             false
         }
         catch (e: HttpException) {
             Log.d("EmojiRepository", "HttpException")
-            e.printStackTrace()
+            false
+        }
+        catch (e: Exception) {
+            Log.d("EmojiRepository", e.message.toString())
             false
         }
     }

android/app/src/main/java/com/goliath/emojihub/repositories/remote/UserRepository.kt

@@ -11,7 +11,7 @@ import javax.inject.Singleton
 
 interface UserRepository {
     suspend fun fetchUserList(): Array<UserDtoList>
-    fun fetchUser(name: String)
+    fun fetchUser(id: String)
     suspend fun registerUser(dto: RegisterUserDto): Response<LoginResponseDto>
     suspend fun login(dto: LoginUserDto): Response<LoginResponseDto>
 }

android/app/src/main/java/com/goliath/emojihub/usecases/PostUseCase.kt

@@ -4,6 +4,7 @@ import androidx.paging.PagingData
 import androidx.paging.map
 import com.goliath.emojihub.data_sources.ApiErrorController
 import com.goliath.emojihub.models.Post
+import com.goliath.emojihub.models.PostDto
 import com.goliath.emojihub.models.UploadPostDto
 import com.goliath.emojihub.repositories.remote.PostRepository
 import kotlinx.coroutines.flow.Flow
@@ -17,7 +18,7 @@ sealed interface PostUseCase {
     suspend fun updatePostList(data: PagingData<Post>)
     suspend fun fetchPostList(): Flow<PagingData<Post>>
     suspend fun uploadPost(content: String): Boolean
-    suspend fun getPostWithId(id: String)
+    suspend fun getPostWithId(id: String): PostDto?
     suspend fun editPost(id: String, content: String)
     suspend fun deletePost(id: String)
 }
@@ -49,8 +50,8 @@ class PostUseCaseImpl @Inject constructor(
         }
     }
 
-    override suspend fun getPostWithId(id: String) {
-        repository.getPostWithId(id)
+    override suspend fun getPostWithId(id: String): PostDto? {
+        return repository.getPostWithId(id)
     }
 
     override suspend fun editPost(id: String, content: String) {

android/app/src/test/java/com/goliath/emojihub/repositories/remote/EmojiRepositoryImplTest.kt

@@ -0,0 +1,175 @@
+package com.goliath.emojihub.repositories.remote
+
+import com.goliath.emojihub.data_sources.api.EmojiApi
+import com.goliath.emojihub.mockLogClass
+import com.goliath.emojihub.models.UploadEmojiDto
+import retrofit2.Response
+import io.mockk.coEvery
+import io.mockk.coVerify
+import io.mockk.mockk
+import io.mockk.mockkStatic
+import io.mockk.spyk
+import kotlinx.coroutines.runBlocking
+import org.junit.Assert.*
+import org.junit.Before
+
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.junit.runners.JUnit4
+import retrofit2.HttpException
+import java.io.File
+import java.io.IOException
+import java.lang.Exception
+
+@RunWith(JUnit4::class)
+class EmojiRepositoryImplTest {
+    private val emojiApi = mockk<EmojiApi>()
+    private val emojiRepositoryImpl = EmojiRepositoryImpl(emojiApi)
+    @Before
+    fun setUp() {
+        mockLogClass()
+    }
+
+//    @Test
+    fun fetchEmojiList() {
+        TODO("Implement after applying pagination")
+    }
+
+//    @Test
+    fun getEmojiWithId() {
+        TODO("Not yet implemented")
+    }
+
+    @Test
+    fun uploadEmoji_success_returnsTrue() {
+        // given
+        mockkStatic(File::class)
+        val sampleVideoFile = File("sampleVideoFile")
+        val sampleUploadEmojiDto = mockk<UploadEmojiDto>()
+        coEvery {
+            emojiApi.uploadEmoji(any(), any())
+        } returns Response.success(Unit)
+        // when
+        val isUploaded = runBlocking {
+            emojiRepositoryImpl.uploadEmoji(sampleVideoFile, sampleUploadEmojiDto)
+        }
+        // then
+        coVerify(exactly = 1) { emojiApi.uploadEmoji(any(), any()) }
+        assertTrue(isUploaded)
+    }
+
+    @Test
+    fun uploadEmoji_failureWithIOException_returnsFalse() {
+        // given
+        mockkStatic(File::class)
+        val sampleVideoFile = File("sampleVideoFile")
+        val sampleUploadEmojiDto = mockk<UploadEmojiDto>()
+        coEvery {
+            emojiApi.uploadEmoji(any(), any())
+        } throws mockk<IOException>()
+        // when
+        val isUploaded = runBlocking {
+            emojiRepositoryImpl.uploadEmoji(sampleVideoFile, sampleUploadEmojiDto)
+        }
+        // then
+        coVerify(exactly = 1) { emojiApi.uploadEmoji(any(), any()) }
+        assertFalse(isUploaded)
+    }
+
+    @Test
+    fun uploadEmoji_failureWithHttpException_returnsFalse() {
+        // given
+        mockkStatic(File::class)
+        val sampleVideoFile = File("sampleVideoFile")
+        val sampleUploadEmojiDto = mockk<UploadEmojiDto>()
+        coEvery {
+            emojiApi.uploadEmoji(any(), any())
+        } throws mockk<HttpException>()
+        // when
+        val isUploaded = runBlocking {
+            emojiRepositoryImpl.uploadEmoji(sampleVideoFile, sampleUploadEmojiDto)
+        }
+        // then
+        coVerify(exactly = 1) { emojiApi.uploadEmoji(any(), any()) }
+        assertFalse(isUploaded)
+    }
+
+    @Test
+    fun uploadEmoji_failureWithOtherException_returnsFalse() {
+        // given
+        mockkStatic(File::class)
+        val sampleVideoFile = File("sampleVideoFile")
+        val sampleUploadEmojiDto = mockk<UploadEmojiDto>()
+        coEvery {
+            emojiApi.uploadEmoji(any(), any())
+        } throws spyk<Exception>()
+        // when
+        val isUploaded = runBlocking {
+            emojiRepositoryImpl.uploadEmoji(sampleVideoFile, sampleUploadEmojiDto)
+        }
+        // then
+        coVerify(exactly = 1) { emojiApi.uploadEmoji(any(), any()) }
+        assertFalse(isUploaded)
+    }
+
+    @Test
+    fun saveEmoji_success_returnsSuccessResponseUnit() {
+        // given
+        val sampleEmojiId = "1234"
+        coEvery {
+            emojiApi.saveEmoji(any())
+        } returns Response.success(Unit)
+        // when
+        val response = runBlocking { emojiRepositoryImpl.saveEmoji(sampleEmojiId) }
+        // then
+        coVerify(exactly = 1) { emojiApi.saveEmoji(sampleEmojiId) }
+        assert(response.isSuccessful)
+    }
+
+    @Test
+    fun saveEmoji_failure_returnsFailureResponseUnit() {
+        // given
+        val sampleEmojiId = "1234"
+        coEvery {
+            emojiApi.saveEmoji(any())
+        } returns Response.error(400, mockk(relaxed=true))
+        // when
+        val response = runBlocking { emojiRepositoryImpl.saveEmoji(sampleEmojiId) }
+        // then
+        coVerify(exactly = 1) { emojiApi.saveEmoji(sampleEmojiId) }
+        assertFalse(response.isSuccessful)
+    }
+
+    @Test
+    fun unSaveEmoji_success_returnsSuccessResponseUnit() {
+        // given
+        val sampleEmojiId = "1234"
+        coEvery {
+            emojiApi.unSaveEmoji(any())
+        } returns Response.success(Unit)
+        // when
+        val response = runBlocking { emojiRepositoryImpl.unSaveEmoji(sampleEmojiId) }
+        // then
+        coVerify(exactly = 1) { emojiApi.unSaveEmoji(sampleEmojiId) }
+        assert(response.isSuccessful)
+    }
+
+    @Test
+    fun unSaveEmoji_failure_returnsFailureResponseUnit() {
+        // given
+        val sampleEmojiId = "1234"
+        coEvery {
+            emojiApi.unSaveEmoji(any())
+        } returns Response.error(400, mockk(relaxed=true))
+        // when
+        val response = runBlocking { emojiRepositoryImpl.unSaveEmoji(sampleEmojiId) }
+        // then
+        coVerify(exactly = 1) { emojiApi.unSaveEmoji(sampleEmojiId) }
+        assertFalse(response.isSuccessful)
+    }
+
+//    @Test
+    fun deleteEmoji() {
+        TODO("Not yet implemented")
+    }
+}