diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 35e9e77..19e4fc9 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -20,7 +20,7 @@ android {
         versionCode = 1
         versionName = "1.0"
 
-        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+        testInstrumentationRunner = "com.example.rememberme.CustomTestRunner"
         vectorDrawables {
             useSupportLibrary = true
         }
@@ -105,6 +105,17 @@ dependencies {
     implementation(libs.hilt.android)
     implementation(libs.androidx.hilt.navigation.compose)
     kapt(libs.hilt.compiler)
+
+    // For Robolectric tests.
+    testImplementation(libs.hilt.android.testing)
+    // ...with Kotlin.
+    kspTest(libs.hilt.android.compiler)
+
+    // For instrumented tests.
+
+    androidTestImplementation(libs.hilt.android.testing)
+    // ...with Kotlin.
+    kspAndroidTest(libs.hilt.android.compiler)
     // Hilt Worker
     implementation(libs.androidx.hilt.work)
     // When using Kotlin.
diff --git a/app/src/androidTest/java/com/example/rememberme/CustomTestRunner.kt b/app/src/androidTest/java/com/example/rememberme/CustomTestRunner.kt
new file mode 100644
index 0000000..53fef35
--- /dev/null
+++ b/app/src/androidTest/java/com/example/rememberme/CustomTestRunner.kt
@@ -0,0 +1,14 @@
+package com.example.rememberme
+
+import android.app.Application
+import android.content.Context
+import androidx.test.runner.AndroidJUnitRunner
+import dagger.hilt.android.testing.HiltTestApplication
+
+// A custom runner to set up the instrumented application class for tests.
+class CustomTestRunner : AndroidJUnitRunner() {
+
+    override fun newApplication(cl: ClassLoader?, name: String?, context: Context?): Application {
+        return super.newApplication(cl, HiltTestApplication::class.java.name, context)
+    }
+}
\ No newline at end of file
diff --git a/app/src/androidTest/java/com/example/rememberme/presentation/navgraph/NavGraphTest.kt b/app/src/androidTest/java/com/example/rememberme/presentation/navgraph/NavGraphTest.kt
index 6fba3b0..9e83e10 100644
--- a/app/src/androidTest/java/com/example/rememberme/presentation/navgraph/NavGraphTest.kt
+++ b/app/src/androidTest/java/com/example/rememberme/presentation/navgraph/NavGraphTest.kt
@@ -1,19 +1,23 @@
-package com.example.rememberme
+package com.example.rememberme.presentation.navgraph
 
 import androidx.compose.ui.test.assertIsDisplayed
 import androidx.compose.ui.test.junit4.createComposeRule
 import androidx.compose.ui.test.onNodeWithTag
 import androidx.compose.ui.test.onNodeWithText
 import androidx.test.ext.junit.runners.AndroidJUnit4
-import com.example.rememberme.presentation.navgraph.NavGraph
-import com.example.rememberme.presentation.navgraph.Routes
+import dagger.hilt.android.testing.HiltAndroidRule
+import dagger.hilt.android.testing.HiltAndroidTest
 import org.junit.Rule
 import org.junit.Test
 import org.junit.runner.RunWith
 
 @RunWith(AndroidJUnit4::class)
+@HiltAndroidTest
 class NavGraphTest {
 
+    @get:Rule
+    var hiltRule = HiltAndroidRule(this)
+
     @get:Rule
     val composeTestRule = createComposeRule()
 
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 5d088ec..bbe0264 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -7,6 +7,7 @@ coreTestingVersion = "1.1.1"
 datastorePreferences = "1.1.1"
 firebaseBom = "33.1.2"
 gradle = "8.0.2"
+hiltAndroidTesting = "2.44"
 hiltCompiler = "2.49"
 hiltAndroidGradlePlugin = "2.49"
 hiltNavigationCompose = "1.2.0"
@@ -56,6 +57,8 @@ core-testing = { module = "android.arch.core:core-testing", version.ref = "coreT
 firebase-bom = { module = "com.google.firebase:firebase-bom", version.ref = "firebaseBom" }
 gradle = { module = "com.android.tools.build:gradle", version.ref = "gradle" }
 hilt-android = { module = "com.google.dagger:hilt-android", version.ref = "hiltCompiler" }
+hilt-android-compiler = { module = "com.google.dagger:hilt-android-compiler", version.ref = "hiltAndroidTesting" }
+hilt-android-testing = { module = "com.google.dagger:hilt-android-testing", version.ref = "hiltAndroidTesting" }
 hilt-compiler = { module = "com.google.dagger:hilt-compiler", version.ref = "hiltCompiler" }
 androidx-hilt-navigation-compose = { module = "androidx.hilt:hilt-navigation-compose", version.ref = "hiltNavigationCompose" }
 hilt-android-gradle-plugin = { module = "com.google.dagger:hilt-android-gradle-plugin", version.ref = "hiltAndroidGradlePlugin" }