Merge pull request #95 from snuhcs-course/test/mySymbol-Settings-view…

…model

Test: My symbol settings viewmodel

frontend/app/src/test/java/com/example/speechbuddy/viewmodel/MySymbolSettingsViewModelTest.kt

@@ -0,0 +1,132 @@
+package com.example.speechbuddy.viewmodel
+
+import androidx.arch.core.executor.testing.InstantTaskExecutorRule
+import androidx.lifecycle.Observer
+import com.example.speechbuddy.domain.models.Symbol
+import com.example.speechbuddy.repository.SymbolRepository
+import com.example.speechbuddy.repository.WeightTableRepository
+import com.example.speechbuddy.ui.models.MySymbolSettingsDisplayMode
+import io.mockk.coEvery
+import io.mockk.coVerify
+import io.mockk.impl.annotations.MockK
+import io.mockk.mockk
+import junit.framework.TestCase.assertEquals
+import kotlinx.coroutines.DelicateCoroutinesApi
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.flow.flowOf
+import kotlinx.coroutines.newSingleThreadContext
+import kotlinx.coroutines.runBlocking
+import kotlinx.coroutines.test.resetMain
+import kotlinx.coroutines.test.setMain
+import org.junit.After
+import org.junit.Before
+import org.junit.Rule
+import org.junit.Test
+
+class MySymbolSettingsViewModelTest {
+    @OptIn(DelicateCoroutinesApi::class)
+    private val mainThreadSurrogate = newSingleThreadContext("UI thread")
+
+    @MockK
+    private val mockWeightTableRepository: WeightTableRepository = mockk(relaxed = true)
+    private val mockSymbolRepository: SymbolRepository = mockk(relaxed = true)
+    private lateinit var viewModel: MySymbolSettingsViewModel
+
+    @get:Rule
+    val instantExecutorRule = InstantTaskExecutorRule()
+
+    val symbol = Symbol(1, "test", null, 1, false, true)
+    val query = "test"
+
+
+    @OptIn(ExperimentalCoroutinesApi::class)
+    @Before
+    fun setup() {
+        Dispatchers.setMain(mainThreadSurrogate)
+        viewModel = MySymbolSettingsViewModel(mockWeightTableRepository, mockSymbolRepository)
+    }
+
+    @OptIn(ExperimentalCoroutinesApi::class)
+    @After
+    fun tearDown() {
+        Dispatchers.resetMain()
+        mainThreadSurrogate.close()
+    }
+
+    class TestObserver<T> : Observer<T> {
+        val observedValues = mutableListOf<T?>()
+
+        override fun onChanged(value: T) {
+            observedValues.add(value)
+        }
+    }
+
+    @Test
+    fun `should set query when called`() {
+        viewModel.setQuery(query)
+
+        assertEquals(query, viewModel.queryInput)
+    }
+
+    @Test
+    fun `should toggle checked symbols when symbol is inputted`() {
+        viewModel.toggleSymbolChecked(symbol)
+
+        assertEquals(symbol, viewModel.checkedSymbols[0])
+    }
+
+    @Test
+    fun `should un-toggle checked symbols when symbol is inputted`() {
+        viewModel.toggleSymbolChecked(symbol)
+        viewModel.toggleSymbolChecked(symbol)
+
+        assertEquals(true, viewModel.checkedSymbols.isEmpty())
+    }
+
+    @Test
+    fun `should update favorite when symbol is inputted`() = runBlocking {
+        coEvery { mockSymbolRepository.updateFavorite(symbol, true) } returns Unit
+        coEvery { mockSymbolRepository.updateFavorite(symbol, false) } returns Unit
+
+        viewModel.updateFavorite(symbol, true)
+        coVerify { mockSymbolRepository.updateFavorite(symbol, true) }
+
+        viewModel.updateFavorite(symbol, false)
+        coVerify { mockSymbolRepository.updateFavorite(symbol, false) }
+    }
+
+    @Test
+    fun `should select display mode when display mode is inputted`() = runBlocking {
+        val displayModeSymbol = MySymbolSettingsDisplayMode.SYMBOL
+        val displayModeFavorite = MySymbolSettingsDisplayMode.FAVORITE
+        val observer = TestObserver<List<Symbol>>()
+        viewModel.symbols.observeForever(observer)
+
+        coEvery { mockSymbolRepository.getUserSymbols("") } returns flowOf(listOf(symbol))
+        coEvery { mockSymbolRepository.getFavoriteSymbols("") } returns flowOf(listOf(symbol))
+
+        viewModel.selectDisplayMode(displayModeFavorite)
+        Thread.sleep(10) // viewModel.selectDisplayMode() does not immediately produce result
+        assertEquals(displayModeFavorite, viewModel.uiState.value.mySymbolSettingsDisplayMode)
+        assertEquals(symbol, observer.observedValues.last()?.get(0))
+
+        viewModel.selectDisplayMode(displayModeSymbol)
+        Thread.sleep(10)
+        assertEquals(displayModeSymbol, viewModel.uiState.value.mySymbolSettingsDisplayMode)
+        assertEquals(symbol, observer.observedValues.last()?.get(0))
+    }
+
+    @Test
+    fun `should delete checked symbols when called`() = runBlocking {
+        coEvery { mockSymbolRepository.deleteSymbol(symbol) } returns Unit
+        coEvery { mockWeightTableRepository.updateWeightTableForDeletedSymbol(symbol) }returns Unit
+
+        viewModel.toggleSymbolChecked(symbol)
+        viewModel.deleteCheckedSymbols()
+
+        coVerify { mockSymbolRepository.deleteSymbol(symbol) }
+        coVerify { mockWeightTableRepository.updateWeightTableForDeletedSymbol(symbol) }
+        assertEquals(true, viewModel.checkedSymbols.isEmpty())
+    }
+}