diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index 7c363b41..01ea1270 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -68,3 +68,24 @@ jobs:
         with:
           name: android-lint-report
           path: composeApp/build/reports/ktlint/
+
+  common-tests:
+    name: Common Tests
+    runs-on: macos-latest
+    needs: [ build ]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup
+        uses: ./.github/actions/setup
+
+      - name: Run common tests
+        run: ./gradlew copyBrandingToCommonResources :composeApp:iosSimulatorArm64Test
+
+      - name: Uploads test reports
+        uses: actions/upload-artifact@v4
+        if: failure()
+        with:
+          name: android-lint-report
+          path: composeApp/build/reports/tests/iosSimulatorArm64Test/
diff --git a/README.md b/README.md
index f37c9728..63806833 100644
--- a/README.md
+++ b/README.md
@@ -43,8 +43,6 @@ besides platform-specific code that we can’t avoid, such as the loading our pr
   * `data` data layer code (database, preferences, network...)
   * `ui` UI layer code, organized into features/screens
 
-
-
 ### Build, Install, and Run
 
 To build, install, and run your application, use the following commands:
@@ -59,7 +57,8 @@ To build, install, and run your application, use the following commands:
   ./gradlew runDebug -Porganization=dw
   ```
 
-There is a custom gradle task(`copyBrandingToCommonResources`) that is used to copy brand specific resources to the common resources folder. This task is called before the `preBuild` task.
+There is a custom gradle task(`copyBrandingToCommonResources`) that is used to copy brand specific
+resources to the common resources folder. This task is called before the `preBuild` task.
 
 ### Creating Run Configurations in Android Studio
 
@@ -82,11 +81,22 @@ Configure run configurations for easy execution within Android Studio:
 
 #### OONI Probe iOS Configuration
 
-The "Run/Debug Configurations" already has the proper configuration and you just need to select the XCode Project Scheme `OONIProbe` and run it.
+The "Run/Debug Configurations" already has the proper configuration and you just need to select the
+XCode Project Scheme `OONIProbe` and run it.
 
 #### News Media Scan iOS Configuration
-The "Run/Debug Configurations" already has the proper configuration and you just need to select the XCode Project Scheme `NewsMediaScan` and run it.
+
+The "Run/Debug Configurations" already has the proper configuration and you just need to select the
+XCode Project Scheme `NewsMediaScan` and run it.
 
 #### Switching between OONI Probe and News Media Scan
+
 - Ensure you can run clean and build the project successfully.
 - Run `pod install` in the `iosApp` directory.
+
+## Testing
+
+Common tests (tests inside `commonTest`) only run on the iOS Simulator.
+Choosing the option `android (local)` won't work. This is a current
+[issue](https://www.jetbrains.com/help/kotlin-multiplatform-dev/compose-test.html#f03e048) with
+the official testing library.
diff --git a/composeApp/build.gradle.kts b/composeApp/build.gradle.kts
index e77fd2a0..5c03ce11 100644
--- a/composeApp/build.gradle.kts
+++ b/composeApp/build.gradle.kts
@@ -1,3 +1,4 @@
+import org.jetbrains.compose.ExperimentalComposeLibrary
 import org.jetbrains.kotlin.gradle.ExperimentalKotlinGradlePluginApi
 import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 
@@ -84,10 +85,16 @@ kotlin {
                 kotlin.srcDir(config.srcRoot)
             }
         }
+        commonTest.dependencies {
+            implementation(kotlin("test"))
+            @OptIn(ExperimentalComposeLibrary::class)
+            implementation(compose.uiTest)
+        }
         all {
             languageSettings {
                 optIn("kotlinx.coroutines.ExperimentalCoroutinesApi")
                 optIn("androidx.compose.material3.ExperimentalMaterial3Api")
+                optIn("androidx.compose.ui.test.ExperimentalTestApi")
             }
         }
     }
diff --git a/composeApp/src/commonTest/kotlin/org/ooni/probe/ui/result/ResultScreenTest.kt b/composeApp/src/commonTest/kotlin/org/ooni/probe/ui/result/ResultScreenTest.kt
new file mode 100644
index 00000000..71e6f6c0
--- /dev/null
+++ b/composeApp/src/commonTest/kotlin/org/ooni/probe/ui/result/ResultScreenTest.kt
@@ -0,0 +1,42 @@
+package org.ooni.probe.ui.result
+
+import androidx.compose.ui.test.onNodeWithContentDescription
+import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.test.performClick
+import androidx.compose.ui.test.runComposeUiTest
+import org.ooni.probe.data.models.TestResult
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+class ResultScreenTest {
+    @Test
+    fun showResult() =
+        runComposeUiTest {
+            val result = TestResult(TestResult.Id("ABCDEF"))
+            setContent {
+                ResultScreen(
+                    state = ResultViewModel.State(result),
+                    onEvent = {},
+                )
+            }
+
+            onNodeWithText(result.id.value).assertExists()
+        }
+
+    @Test
+    fun pressBack() =
+        runComposeUiTest {
+            val events = mutableListOf<ResultViewModel.Event>()
+            val result = TestResult(TestResult.Id("ABCDEF"))
+            setContent {
+                ResultScreen(
+                    state = ResultViewModel.State(result),
+                    onEvent = events::add,
+                )
+            }
+
+            onNodeWithContentDescription("Back").performClick()
+            assertEquals(1, events.size)
+            assertEquals(ResultViewModel.Event.BackClicked, events.first())
+        }
+}
diff --git a/composeApp/src/commonTest/kotlin/org/ooni/probe/ui/result/ResultViewModelTest.kt b/composeApp/src/commonTest/kotlin/org/ooni/probe/ui/result/ResultViewModelTest.kt
new file mode 100644
index 00000000..e6c08302
--- /dev/null
+++ b/composeApp/src/commonTest/kotlin/org/ooni/probe/ui/result/ResultViewModelTest.kt
@@ -0,0 +1,21 @@
+package org.ooni.probe.ui.result
+
+import org.ooni.probe.data.models.TestResult
+import kotlin.test.Test
+import kotlin.test.assertTrue
+
+class ResultViewModelTest {
+    @Test
+    fun backClicked() {
+        var backPressed = false
+
+        val viewModel =
+            ResultViewModel(
+                resultId = TestResult.Id("1234"),
+                onBack = { backPressed = true },
+            )
+
+        viewModel.onEvent(ResultViewModel.Event.BackClicked)
+        assertTrue(backPressed)
+    }
+}