First running test

.editorconfig

@@ -0,0 +1,3 @@
+[*.{kt,kts}]
+max_line_length = 120
+ktlint_code_style = ktlint_official

pom.xml

@@ -7,6 +7,7 @@
         <kotlin.version>1.9.10</kotlin.version>
         <ktor.version>2.3.4</ktor.version>
         <main.class>com.github.statnett.loadflowservice.AppKt</main.class>
+        <kotlin.code.style>official</kotlin.code.style>
     </properties>
 
     <repositories>
@@ -38,6 +39,11 @@
             <artifactId>ktor-server-netty-jvm</artifactId>
             <version>${ktor.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-test-junit5</artifactId>
+            <version>1.9.20-Beta2</version>
+        </dependency>
     </dependencies>
 
     <build>

src/main/ApiDataModels.kt

@@ -0,0 +1,26 @@
+package com.github.statnett.loadflowservice
+
+import com.powsybl.iidm.network.Network
+
+/**
+ * Class for holding properties from the PowsbyBl bus class that are
+ * returned via the Rest API
+ */
+data class BusProperties(
+    val id: String,
+    val voltage: Double,
+    val angle: Double,
+    val activePower: Double,
+    val reactivePower: Double,
+)
+
+fun busPropertiesFromNetwork(network: Network) =
+    network.getBusView().getBusStream().map {
+        BusProperties(
+            id = it.getId(),
+            voltage = it.getV(),
+            angle = it.getAngle(),
+            activePower = it.getP(),
+            reactivePower = it.getQ(),
+        )
+    }

src/main/app.kt → src/main/App.kt

@@ -1,10 +1,10 @@
 package com.github.statnett.loadflowservice
 
 import io.ktor.server.application.*
+import io.ktor.server.engine.*
+import io.ktor.server.netty.Netty
 import io.ktor.server.response.*
 import io.ktor.server.routing.*
-import io.ktor.server.engine.*
-import io.ktor.server.netty.*
 
 fun main() {
     embeddedServer(Netty, port = 8080) {
@@ -14,4 +14,4 @@ fun main() {
             }
         }
     }.start(wait = true)
-}
+}

src/main/solver.kt → src/main/Solver.kt

@@ -1,14 +1,20 @@
 package com.github.statnett.loadflowservice
 
 import com.powsybl.iidm.network.Network
-import com.powsybl.loadflow.LoadFlowParameters
 import com.powsybl.loadflow.LoadFlow
+import com.powsybl.loadflow.LoadFlowParameters
 import java.io.InputStream
 
-fun networkFromStream(fname: String, content: InputStream): Network {
+fun networkFromStream(
+    fname: String,
+    content: InputStream,
+): Network {
     return Network.read(fname, content)
-} 
+}
 
-fun solve(network: Network, parameters: LoadFlowParameters) {
-    LoadFlow.run(network, parameters);
-}
+fun solve(
+    network: Network,
+    parameters: LoadFlowParameters,
+) {
+    LoadFlow.run(network, parameters)
+}

src/test/ApiDataModelsTest.kt

@@ -0,0 +1,14 @@
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import com.powsybl.ieeecdf.converter.IeeeCdfNetworkFactory
+import com.github.statnett.loadflowservice.busPropertiesFromNetwork
+
+class ApiDataModelTest {
+
+    @Test
+    fun `Should be 14 buses in test network`() {
+        val network = IeeeCdfNetworkFactory.create14()
+        val buses = busPropertiesFromNetwork(network)
+        assertEquals(buses.count(), 14)
+    }
+}