fix: WPB-22188 Fail fast on no DB connection

build.gradle.kts

@@ -63,6 +63,7 @@ dependencies {
     testImplementation("io.mockk", "mockk", "1.13.16")
     testImplementation("org.jetbrains.kotlinx", "kotlinx-coroutines-test", "1.7.3")
     testImplementation("org.junit.jupiter", "junit-jupiter-params", "5.10.0")
+    testImplementation("io.ktor", "ktor-server-test-host", ktorVersion)
 }
 
 ktlint {

src/main/kotlin/com/wire/apps/polls/setup/KtorInstallation.kt

@@ -72,11 +72,7 @@ fun Application.connectDatabase() {
         installationLogger.info { "DB connected." }
         migrateDatabase(dbConfig)
     } else {
-        // TODO verify handling, maybe exit the App?
-        installationLogger.error {
-            "It was not possible to connect to db database! " +
-                "The application will start but it won't work."
-        }
+        error("Unable to connect to the database")
     }
 }
 

src/test/kotlin/com/wire/apps/polls/setup/SetupTest.kt

@@ -0,0 +1,27 @@
+package com.wire.apps.polls.setup
+
+import com.wire.apps.polls.dao.DatabaseSetup
+import io.ktor.server.testing.testApplication
+import io.mockk.every
+import io.mockk.mockkObject
+import io.mockk.unmockkObject
+import kotlin.test.Test
+import kotlin.test.assertFailsWith
+
+class SetupTest {
+    @Test
+    fun `connectDatabase throws when connection failed`() =
+        testApplication {
+            // Arrange
+            mockkObject(DatabaseSetup)
+
+            every { DatabaseSetup.isConnected() } returns false
+
+            // Act & Assert
+            assertFailsWith<IllegalStateException> {
+                application.connectDatabase()
+            }
+
+            unmockkObject(DatabaseSetup)
+        }
+}