test(vlei): testing if the vlei server is up and running

Caveat: This should be automated when deployed, changing localhost to actual host value

build.gradle.kts

@@ -40,6 +40,7 @@ dependencies {
         exclude("com.sksamuel.hoplite", "hoplite-yaml")
         exclude("com.sksamuel.hoplite", "hoplite-hikaricp")
     }
+    testImplementation("org.junit.jupiter:junit-jupiter:5.8.1")
 
     /* -- KTOR -- */
 
@@ -137,6 +138,8 @@ dependencies {
     testImplementation("io.kotest:kotest-assertions-core:5.5.5")
     testImplementation("io.kotest.extensions:kotest-assertions-ktor:2.0.0")*/
     testImplementation("io.ktor:ktor-server-tests-jvm:$ktorVersion")
+    testImplementation("org.jetbrains.kotlinx:kotlinx-coroutines-test:1.7.2")
+    testImplementation("org.junit.jupiter:junit-jupiter:5.9.2")
 
     // Logging
     implementation("io.github.oshai:kotlin-logging:5.1.0")

src/test/kotlin/config/keri/acdc/vlei/ServerTestvLEI.kt

@@ -1,4 +1,33 @@
 package config.keri.acdc.vlei
 
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.async
+import kotlinx.coroutines.runBlocking
+import kotlin.test.assertTrue
+import java.net.InetSocketAddress
+import java.net.Socket
+import org.junit.Test
 class ServerTestvLEI {
+    @Test
+    fun testServerAvailability() = runBlocking {
+        val host = "localhost"
+        val port = 7723
+
+        val serverAvailable = async(Dispatchers.IO) {
+            isServerAvailable(host, port)
+        }
+
+        assertTrue(serverAvailable.await(), "The server on $host:$port is not available.")
+    }
+
+    private fun isServerAvailable(host: String, port: Int): Boolean {
+        return try {
+            Socket().use { socket ->
+                socket.connect(InetSocketAddress(host, port), 2000)
+                true
+            }
+        } catch (e: Exception) {
+            false
+        }
+    }
 }