- Fix failing unit tests

Took 30 minutes

app/build.gradle

@@ -49,6 +49,9 @@ dependencies {
     androidTestImplementation 'androidx.test:rules:1.4.0'
     implementation 'org.jetbrains.kotlin:kotlin-test:1.7.10'
 
+    // Coroutines
+    def coroutines_version = "1.6.2"
+    testImplementation "org.jetbrains.kotlinx:kotlinx-coroutines-test:$coroutines_version"
 
     //Retrofit and GSON
     def retrofit_ver = "2.8.1"

app/src/test/java/com/appttude/h_mal/easycc/ui/main/MainViewModelTest.kt

@@ -6,7 +6,9 @@ import androidx.arch.core.executor.testing.InstantTaskExecutorRule
 import com.appttude.h_mal.easycc.data.network.response.ResponseObject
 import com.appttude.h_mal.easycc.data.repository.Repository
 import com.appttude.h_mal.easycc.helper.CurrencyDataHelper
+import com.appttude.h_mal.easycc.utils.MainCoroutineRule
 import com.appttude.h_mal.easycc.utils.observeOnce
+import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.runBlocking
 import org.junit.Assert.*
 import org.junit.Before
@@ -23,6 +25,9 @@ class MainViewModelTest {
     @get:Rule
     val instantTaskExecutorRule: InstantTaskExecutorRule = InstantTaskExecutorRule()
 
+    @get:Rule
+    var mainCoroutineRule = MainCoroutineRule()
+
     lateinit var viewModel: MainViewModel
 
     @Mock

app/src/test/java/com/appttude/h_mal/easycc/utils/MainCoroutineRule.kt

@@ -0,0 +1,22 @@
+package com.appttude.h_mal.easycc.utils
+
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.test.*
+import org.junit.rules.TestWatcher
+import org.junit.runner.Description
+
+@ExperimentalCoroutinesApi
+class MainCoroutineRule(private val dispatcher: TestDispatcher = StandardTestDispatcher()) :
+    TestWatcher() {
+
+    override fun starting(description: Description) {
+        super.starting(description)
+        Dispatchers.setMain(dispatcher)
+    }
+
+    override fun finished(description: Description) {
+        super.finished(description)
+        Dispatchers.resetMain()
+    }
+}