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skydovesskydoves
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Merge pull request #1 from RevenueCat/test/subscriptions
Add unit tests for the subscriptions
2 parents 24373b1 + 9cbba38 commit 99c2159

9 files changed

Lines changed: 454 additions & 1 deletion

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‎.github/workflows/build.yml‎

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@@ -87,7 +87,7 @@ jobs:
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uses: gradle/actions/setup-gradle@v4
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- name: Run unit tests
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run: ./gradlew allTests --stacktrace
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run: ./gradlew testDebugUnitTest --stacktrace
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- name: Upload test reports
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if: always()

‎build-logic/convention/src/main/kotlin/KmpLibraryConventionPlugin.kt‎

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@@ -54,6 +54,12 @@ class KmpLibraryConventionPlugin : Plugin<Project> {
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commonMain.dependencies {
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implementation(libs.findLibrary("kotlinx-coroutines-core").get())
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}
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commonTest.dependencies {
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implementation(libs.findLibrary("kotlin-test").get())
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implementation(libs.findLibrary("kotlinx-coroutines-test").get())
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implementation(libs.findLibrary("turbine").get())
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}
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}
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}
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‎feature/home/build.gradle.kts‎

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@@ -5,3 +5,11 @@ plugins {
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android {
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namespace = "com.revenuecat.catpaywalls.feature.home"
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}
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kotlin {
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sourceSets {
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commonTest.dependencies {
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implementation(projects.core.data)
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}
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}
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}

‎feature/home/src/commonTest/kotlin/com/revenuecat/catpaywalls/feature/home/CatArticlesViewModelTest.kt‎

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/*
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* Copyright (c) 2025 RevenueCat, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.revenuecat.catpaywalls.feature.home
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import app.cash.turbine.test
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import kotlinx.coroutines.Dispatchers
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import kotlinx.coroutines.ExperimentalCoroutinesApi
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import kotlinx.coroutines.test.StandardTestDispatcher
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import kotlinx.coroutines.test.resetMain
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import kotlinx.coroutines.test.runTest
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import kotlinx.coroutines.test.setMain
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import kotlin.test.AfterTest
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import kotlin.test.BeforeTest
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import kotlin.test.Test
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import kotlin.test.assertEquals
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import kotlin.test.assertIs
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@OptIn(ExperimentalCoroutinesApi::class)
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class CatArticlesViewModelTest {
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private val testDispatcher = StandardTestDispatcher()
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private lateinit var fakeRepository: FakeArticlesRepository
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@BeforeTest
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fun setup() {
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Dispatchers.setMain(testDispatcher)
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fakeRepository = FakeArticlesRepository()
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}
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@AfterTest
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fun tearDown() {
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Dispatchers.resetMain()
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}
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@Test
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fun initialStateIsLoading() = runTest {
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// Given
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val articles = FakeArticlesRepository.createSampleArticles()
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fakeRepository.setArticlesResult(Result.success(articles))
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// When
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val viewModel = CatArticlesViewModel(fakeRepository)
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// Then
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viewModel.uiState.test {
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assertIs<HomeUiState.Loading>(awaitItem())
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cancelAndIgnoreRemainingEvents()
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}
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}
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@Test
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fun whenArticlesFetchSucceeds_stateIsSuccessWithArticles() = runTest {
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// Given
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val articles = FakeArticlesRepository.createSampleArticles(count = 5)
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fakeRepository.setArticlesResult(Result.success(articles))
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// When
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val viewModel = CatArticlesViewModel(fakeRepository)
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// Then
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viewModel.uiState.test {
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// Initial loading state
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assertIs<HomeUiState.Loading>(awaitItem())
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// Advance dispatcher to process the flow
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testDispatcher.scheduler.advanceUntilIdle()
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// Success state with articles
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val successState = awaitItem()
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assertIs<HomeUiState.Success>(successState)
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assertEquals(5, successState.articles.size)
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assertEquals("Test Article 1", successState.articles.first().title)
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cancelAndIgnoreRemainingEvents()
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}
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}
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@Test
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fun whenArticlesFetchFails_stateIsErrorWithMessage() = runTest {
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// Given
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val errorMessage = "Network error"
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fakeRepository.setArticlesResult(Result.failure(Exception(errorMessage)))
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// When
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val viewModel = CatArticlesViewModel(fakeRepository)
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// Then
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viewModel.uiState.test {
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// Initial loading state
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assertIs<HomeUiState.Loading>(awaitItem())
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// Advance dispatcher to process the flow
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testDispatcher.scheduler.advanceUntilIdle()
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// Error state
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val errorState = awaitItem()
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assertIs<HomeUiState.Error>(errorState)
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assertEquals(errorMessage, errorState.message)
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cancelAndIgnoreRemainingEvents()
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}
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}
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@Test
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fun whenArticlesListIsEmpty_stateIsSuccessWithEmptyList() = runTest {
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// Given
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fakeRepository.setArticlesResult(Result.success(emptyList()))
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// When
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val viewModel = CatArticlesViewModel(fakeRepository)
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// Then
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viewModel.uiState.test {
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// Initial loading state
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assertIs<HomeUiState.Loading>(awaitItem())
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// Advance dispatcher
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testDispatcher.scheduler.advanceUntilIdle()
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// Success state with empty list
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val successState = awaitItem()
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assertIs<HomeUiState.Success>(successState)
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assertEquals(0, successState.articles.size)
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cancelAndIgnoreRemainingEvents()
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}
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}
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}

‎feature/home/src/commonTest/kotlin/com/revenuecat/catpaywalls/feature/home/FakeArticlesRepository.kt‎

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/*
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* Copyright (c) 2025 RevenueCat, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.revenuecat.catpaywalls.feature.home
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import com.revenuecat.catpaywalls.core.data.ArticlesRepository
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import com.revenuecat.catpaywalls.core.model.Article
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import kotlinx.coroutines.flow.Flow
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import kotlinx.coroutines.flow.flow
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/**
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* Fake implementation of [ArticlesRepository] for testing.
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*/
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class FakeArticlesRepository : ArticlesRepository {
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private var articlesResult: Result<List<Article>> = Result.success(emptyList())
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private var articleByIdResults: MutableMap<Long, Result<Article>> = mutableMapOf()
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fun setArticlesResult(result: Result<List<Article>>) {
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articlesResult = result
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}
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fun setArticleByIdResult(id: Long, result: Result<Article>) {
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articleByIdResults[id] = result
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}
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override fun fetchArticles(): Flow<Result<List<Article>>> = flow {
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emit(articlesResult)
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}
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override fun getArticleById(id: Long): Flow<Result<Article>> = flow {
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val result = articleByIdResults[id]
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?: Result.failure(NoSuchElementException("Article with id $id not found"))
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emit(result)
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}
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companion object {
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fun createSampleArticles(count: Int = 3): List<Article> = (1..count).map { index ->
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Article(
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title = "Test Article $index",
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content = "This is the content for test article $index",
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description = "Description for article $index",
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author = "Test Author $index",
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date = "2025-01-0$index",
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cover = "https://example.com/cover$index.jpg",
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)
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}
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}
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}

‎feature/subscriptions/build.gradle.kts‎

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@@ -5,3 +5,11 @@ plugins {
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android {
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namespace = "com.revenuecat.catpaywalls.feature.subscriptions"
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}
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kotlin {
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sourceSets {
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commonTest.dependencies {
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implementation(projects.core.data)
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}
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}
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}

‎feature/subscriptions/src/commonTest/kotlin/com/revenuecat/catpaywalls/feature/subscriptions/FakePaywallsRepository.kt‎

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/*
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* Copyright (c) 2025 RevenueCat, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.revenuecat.catpaywalls.feature.subscriptions
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import com.revenuecat.catpaywalls.core.data.PaywallsRepository
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import com.revenuecat.purchases.kmp.models.CustomerInfo
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import com.revenuecat.purchases.kmp.models.Offering
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import com.revenuecat.purchases.kmp.models.StoreTransaction
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import kotlinx.coroutines.flow.Flow
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import kotlinx.coroutines.flow.flow
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/**
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* Fake implementation of [PaywallsRepository] for testing.
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*/
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class FakePaywallsRepository : PaywallsRepository {
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private var offeringResult: Result<Offering>? = null
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private var customerInfoResult: Result<CustomerInfo>? = null
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private var purchaseResults: MutableMap<String, Result<StoreTransaction>> = mutableMapOf()
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fun setOfferingResult(result: Result<Offering>?) {
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offeringResult = result
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}
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fun setCustomerInfoResult(result: Result<CustomerInfo>?) {
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customerInfoResult = result
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}
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fun setPurchaseResult(packageId: String, result: Result<StoreTransaction>) {
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purchaseResults[packageId] = result
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}
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fun simulateOfferingError(message: String = "Failed to fetch offering") {
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offeringResult = Result.failure(Exception(message))
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}
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fun simulateCustomerInfoError(message: String = "Failed to fetch customer info") {
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customerInfoResult = Result.failure(Exception(message))
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}
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override fun fetchOffering(): Flow<Result<Offering>> = flow {
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val result = offeringResult
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?: Result.failure(IllegalStateException("No offering configured"))
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emit(result)
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}
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override fun fetchCustomerInfo(): Flow<Result<CustomerInfo>> = flow {
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val result = customerInfoResult
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?: Result.failure(IllegalStateException("No customer info configured"))
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emit(result)
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}
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override fun awaitPurchase(packageId: String): Flow<Result<StoreTransaction>> = flow {
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val result = purchaseResults[packageId]
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?: Result.failure(IllegalStateException("Package not found: $packageId"))
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emit(result)
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}
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}

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