diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
new file mode 100644
index 0000000..071eb6a
--- /dev/null
+++ b/.github/workflows/unit_tests.yml
@@ -0,0 +1,30 @@
+name: Unit Tests
+
+on:
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  unit-test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+
+      - name: Run Unit Tests
+        run: ./gradlew test
+
+      - name: Upload Test Results
+        uses: actions/upload-artifact@v3
+        if: failure()
+        with:
+          name: unit-test-results
+          path: app/build/reports/tests/
\ No newline at end of file
diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 2e700a1..9a36bb6 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -62,14 +62,15 @@ dependencies {
     implementation(libs.androidx.material3)
     implementation(libs.androidx.ui.text.google.fonts)
     testImplementation(libs.junit)
+    testImplementation(libs.truth)
     androidTestImplementation(libs.androidx.junit)
     androidTestImplementation(libs.androidx.espresso.core)
     androidTestImplementation(platform(libs.androidx.compose.bom))
     androidTestImplementation(libs.androidx.ui.test.junit4)
     debugImplementation(libs.androidx.ui.tooling)
     debugImplementation(libs.androidx.ui.test.manifest)
-    implementation("com.google.dagger:hilt-android:2.44")
-    kapt("com.google.dagger:hilt-android-compiler:2.44")
+    implementation(libs.hilt.android)
+    kapt(libs.hilt.android.compiler)
 }
 
 kapt {
diff --git a/app/src/androidTest/java/com/mnbpdx/gardenbook/DetailScreenTest.kt b/app/src/androidTest/java/com/mnbpdx/gardenbook/DetailScreenTest.kt
new file mode 100644
index 0000000..830c11b
--- /dev/null
+++ b/app/src/androidTest/java/com/mnbpdx/gardenbook/DetailScreenTest.kt
@@ -0,0 +1,58 @@
+package com.mnbpdx.gardenbook
+
+import androidx.compose.foundation.ExperimentalFoundationApi
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.ui.test.*
+import androidx.compose.ui.test.junit4.createComposeRule
+import com.mnbpdx.gardenbook.ui.detail.DetailScreenContent
+import com.mnbpdx.gardenbook.ui.theme.GardenBookTheme
+import org.junit.Before
+import org.junit.Rule
+import org.junit.Test
+
+@ExperimentalMaterial3Api
+@ExperimentalFoundationApi
+class DetailScreenTest {
+
+    @get:Rule
+    val composeTestRule = createComposeRule()
+
+    private var backPressed = false
+    private val testPlantName = "Test Plant"
+
+    @Before
+    fun setUp() {
+        backPressed = false
+        composeTestRule.setContent {
+            GardenBookTheme {
+                DetailScreenContent(
+                    plantName = testPlantName,
+                    onArrowBackPress = { backPressed = true }
+                )
+            }
+        }
+    }
+
+    @Test
+    fun detailScreen_displaysPlantName() {
+        composeTestRule.onNodeWithText(testPlantName).assertIsDisplayed()
+    }
+
+    @Test
+    fun detailScreen_displaysImageCarousel() {
+        composeTestRule.onNodeWithContentDescription("Carousel image 0").assertIsDisplayed()
+    }
+
+    @Test
+    fun detailScreen_displaysThreeImagesInCarousel() {
+        repeat(3) { index ->
+            composeTestRule.onNodeWithContentDescription("Carousel image $index")
+        }
+    }
+
+    @Test
+    fun detailScreen_backPress_triggersCallback() {
+        composeTestRule.onNodeWithContentDescription("up icon").performClick()
+        assert(backPressed)
+    }
+}
diff --git a/app/src/test/java/com/mnbpdx/gardenbook/ui/NavigationViewModelTest.kt b/app/src/test/java/com/mnbpdx/gardenbook/ui/NavigationViewModelTest.kt
new file mode 100644
index 0000000..13c390b
--- /dev/null
+++ b/app/src/test/java/com/mnbpdx/gardenbook/ui/NavigationViewModelTest.kt
@@ -0,0 +1,21 @@
+package com.mnbpdx.gardenbook.ui
+
+import com.google.common.truth.Truth.assertThat
+import org.junit.Test
+
+class NavigationViewModelTest {
+
+    private val viewModel = NavigationViewModel()
+
+    @Test
+    fun `WHEN navigateToHomeScreen is called THEN destination set to home screen`() {
+        viewModel.navigateToHomeScreen()
+        assertThat(viewModel.destination.value).isEqualTo(Destination.HomeScreen)
+    }
+
+    @Test
+    fun `WHEN navigateToDetailScreen is called THEN destination set to detail screen`() {
+        viewModel.navigateToDetailScreen("test plant name")
+        assertThat(viewModel.destination.value).isEqualTo(Destination.DetailScreen("test plant name"))
+    }
+}
\ No newline at end of file
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 704fe78..69ef472 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,5 +1,6 @@
 [versions]
 agp = "8.5.0"
+hiltAndroid = "2.44"
 kotlin = "1.9.0"
 coreKtx = "1.10.1"
 junit = "4.13.2"
@@ -8,10 +9,13 @@ espressoCore = "3.5.1"
 lifecycleRuntimeKtx = "2.6.1"
 activityCompose = "1.8.0"
 composeBom = "2024.04.01"
+truth = "1.4.3"
 uiTextGoogleFonts = "1.6.8"
 
 [libraries]
 androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
+hilt-android = { module = "com.google.dagger:hilt-android", version.ref = "hiltAndroid" }
+hilt-android-compiler = { module = "com.google.dagger:hilt-android-compiler", version.ref = "hiltAndroid" }
 junit = { group = "junit", name = "junit", version.ref = "junit" }
 androidx-junit = { group = "androidx.test.ext", name = "junit", version.ref = "junitVersion" }
 androidx-espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" }
@@ -26,6 +30,7 @@ androidx-ui-test-manifest = { group = "androidx.compose.ui", name = "ui-test-man
 androidx-ui-test-junit4 = { group = "androidx.compose.ui", name = "ui-test-junit4" }
 androidx-material3 = { group = "androidx.compose.material3", name = "material3" }
 androidx-ui-text-google-fonts = { group = "androidx.compose.ui", name = "ui-text-google-fonts", version.ref = "uiTextGoogleFonts" }
+truth = { module = "com.google.truth:truth", version.ref = "truth" }
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }