Prepare karate for tests with multiple backends running at the same time

.gitignore

@@ -42,3 +42,6 @@ fe2-android/app/src/main/resources/protocol
 
 .DS_Store
 **/.DS_Store
+
+# Scala Metals
+*.metals

be1-go/cli/cli.go

@@ -5,8 +5,6 @@ import (
 	"encoding/base64"
 	"encoding/json"
 	"fmt"
-	"github.com/rs/zerolog"
-	"golang.org/x/exp/slices"
 	"net/url"
 	"os"
 	popstellar "popstellar"
@@ -24,6 +22,9 @@ import (
 	"sync"
 	"time"
 
+	"github.com/rs/zerolog"
+	"golang.org/x/exp/slices"
+
 	"github.com/rs/zerolog/log"
 	"go.dedis.ch/kyber/v3"
 
@@ -57,6 +58,7 @@ type ServerConfig struct {
 	ServerPort     int      `json:"server-port"`
 	AuthPort       int      `json:"auth-port"`
 	OtherServers   []string `json:"other-servers"`
+	DatabasePath   string   `json:"database-path"`
 }
 
 func (s *ServerConfig) newHub(l *zerolog.Logger) (hub.Hub, error) {
@@ -69,10 +71,12 @@ func (s *ServerConfig) newHub(l *zerolog.Logger) (hub.Hub, error) {
 		s.ServerAddress = fmt.Sprintf("ws://%s:%d/server", s.PublicAddress, s.ServerPort)
 	}
 
-	path := "./database-a/" + sqlite.DefaultPath
-
-	if s.ClientPort == 9002 {
-		path = "./database-b/" + sqlite.DefaultPath
+	if s.DatabasePath == "" {
+		if s.ClientPort == 9002 {
+			s.DatabasePath = "./database-b/" + sqlite.DefaultPath
+		} else {
+			s.DatabasePath = "./database-a/" + sqlite.DefaultPath
+		}
 	}
 
 	var point kyber.Point = nil
@@ -86,7 +90,7 @@ func (s *ServerConfig) newHub(l *zerolog.Logger) (hub.Hub, error) {
 		return nil, err
 	}
 
-	db, err := sqlite.NewSQLite(path, true)
+	db, err := sqlite.NewSQLite(s.DatabasePath, true)
 	if err != nil {
 		return nil, err
 	}
@@ -407,6 +411,7 @@ func startWithFlags(cliCtx *cli.Context) (ServerConfig, error) {
 		ServerPort:     serverPort,
 		AuthPort:       authPort,
 		OtherServers:   cliCtx.StringSlice("other-servers"),
+		DatabasePath:   cliCtx.String("database-path"),
 	}, nil
 }
 

be1-go/cli/pop.go

@@ -93,6 +93,11 @@ func run(ctx context.Context, args []string) {
 		Aliases: []string{"cf"},
 		Usage:   "path to the config file which will override other flags if present",
 	}
+	databasePathFlag := &cli.StringFlag{
+		Name:    "database-path",
+		Aliases: []string{"dbp"},
+		Usage:   "path to the database file",
+	}
 
 	app := &cli.App{
 		Name:  "pop",
@@ -119,6 +124,7 @@ func run(ctx context.Context, args []string) {
 							authServerPortFlag,
 							otherServersFlag,
 							configFileFlag,
+							databasePathFlag,
 						},
 						Action: func(c *cli.Context) error {
 							err := Serve(c)

be2-scala/src/main/scala/ch/epfl/pop/config/RuntimeEnvironment.scala

@@ -24,6 +24,7 @@ object RuntimeEnvironment {
   private val configParam = "scala.config"
   private val securityParam = "scala.security"
   private val dbPathParam = "scala.db"
+  private val peerListParam = "scala.peerlist"
   private val dbFolder = "database"
   private val testParam = "test"
 
@@ -45,12 +46,7 @@ object RuntimeEnvironment {
 
   // Needed for unit tests
   lazy val isTestMode: Boolean = testMode(testParam)
-  lazy val serverPeersListPath: String =
-    if (isTestMode) {
-      confDir + File.separator + "server-peers-list-mock.conf"
-    } else {
-      confDir + File.separator + "server-peers-list.conf"
-    }
+  lazy val serverPeersListPath: String = getPeerListPath()
 
   def readServerPeers(): List[String] = {
     val source =
@@ -102,6 +98,17 @@ object RuntimeEnvironment {
     }
   }
 
+  private def getPeerListPath(): String = {
+    val path = sp(peerListParam)
+    if (path != null && path.trim.nonEmpty) {
+      path.trim
+    } else if (isTestMode) {
+      confDir + File.separator + "server-peers-list-mock.conf"
+    } else {
+      confDir + File.separator + "server-peers-list.conf"
+    }
+  }
+
   private def testMode(testParam: String): Boolean = {
     sp(testParam) != null
   }

tests/karate/src/test/java/be/features/LAO/create.feature

@@ -110,7 +110,7 @@ Feature: Create a pop LAO
 
   @create6
   Scenario: Create Lao request with public key different from the sender public key should fail
-    Given def notOrganizer = call createMockClient
+    Given def notOrganizer = call createMockFrontend
     And def laoCreateRequest =
       """
         {

tests/karate/src/test/java/be/features/election/castVote.feature

@@ -153,7 +153,7 @@ Feature: Cast a vote
   # upon a non-attendee casting a valid vote.
   @castVote6
   Scenario: Non attendee casting a vote should return an error
-    Given def nonAttendee = call createMockClient
+    Given def nonAttendee = call createMockFrontend
     And def validCastVote =
       """
         {

tests/karate/src/test/java/be/features/election/electionOpen.feature

@@ -78,7 +78,7 @@ Feature: Open an Election
   # if an open election message is sent by a non-organizer
   @electionOpen4
   Scenario: Non organizer opening the election should result in an error
-    Given def notOrganizer = call createMockClient
+    Given def notOrganizer = call createMockFrontend
     And def validElectionOpen =
       """
         {

tests/karate/src/test/java/be/features/rollCall/closeRollCall.feature

@@ -39,7 +39,7 @@ Feature: Close a Roll Call
 
   @closeRollCall2
   Scenario: Non-organizer closing a roll call should fail
-    Given def notOrganizer = call createMockClient
+    Given def notOrganizer = call createMockFrontend
     And def validCloseRollCall =
       """
         {

tests/karate/src/test/java/be/features/rollCall/createRollCall.feature

@@ -67,7 +67,7 @@ Feature: Create a Roll Call
   # a non-organizer should result in an error message being sent by the backend.
   @createRollCall3
   Scenario: Roll Call Creation with non-organizer as sender should return an error
-    Given def notOrganizer = call createMockClient
+    Given def notOrganizer = call createMockFrontend
     And def validCreateRollCall =
       """
         {

tests/karate/src/test/java/be/features/rollCall/openRollCall.feature

@@ -38,7 +38,7 @@ Feature: Roll Call Open
 
   @openRollCall2
   Scenario: Opening a Roll Call with non-organizer as sender should fail
-    Given def notOrganizer = call createMockClient
+    Given def notOrganizer = call createMockFrontend
     And def validOpenRollCall =
       """
         {

tests/karate/src/test/java/be/utils/GoServer.java

@@ -1,32 +1,57 @@
 package be.utils;
 
 import java.nio.file.Paths;
+import java.util.HashMap;
+import java.util.Map;
+import java.nio.file.Files;
+import java.io.IOException;
 
 public class GoServer extends Server implements Configurable {
+  private String dbPath;
 
-  @Override
-  public boolean start() {
-    return super.start(getCmd(), getDir(), getLogPath());
+  public GoServer(String host, int clientPort, int serverPort, int authPort, String dbPath, String logPath) {
+    super(host, clientPort, serverPort, authPort, logPath);
+    this.dbPath = dbPath;
   }
 
-  @Override
-  public void stop() {
-    super.stop();
+  public GoServer() {
+    this("localhost", 9000, 9001, 9100, null, null);
   }
 
   @Override
-  public String[] getCmd() {
+  public String[] getCmd() throws IOException {
+    Map<String, String> args = new HashMap<>();
+    args.put("client-port", String.valueOf(clientPort));
+    args.put("server-port", String.valueOf(serverPort));
+    args.put("auth-port", String.valueOf(authPort));
+    args.put("server-public-address", host);
+    args.put("server-listen-address", host);
+
+    if (dbPath == null) {
+      dbPath = Files.createTempFile("go_database", ".sqlite").toString();
+    }
+    args.put("database-path", dbPath);
+
+    if (peers.size() > 0) {
+      args.put("other-servers", String.join(",", peers));
+    }
+
+    String cmd = "server serve";
+    for (Map.Entry<String, String> entry : args.entrySet()) {
+      cmd += " --" + entry.getKey() + " " + entry.getValue();
+    }
+
     if (isWindowsOS()) {
       return new String[]{
         "cmd",
         "/c",
-        "\"pop.exe server serve\""
+        "\"pop.exe " + cmd + "\""
       };
     } else {
       return new String[]{
         "bash",
         "-c",
-        "./pop server serve"
+        "./pop " + cmd
       };
     }
   }
@@ -36,15 +61,14 @@ public String getDir() {
     return Paths.get("..", "..", "be1-go").toString();
   }
 
-  @Override
-  public String getLogPath() {
-    return Paths.get("go.log").toString();
-  }
-
   @Override
   public void deleteDatabaseDir() {
-    //TODO: delete GO backend database if necessary
-    System.out.println("No database to delete for GO backend");
-
+    if (dbPath != null) {
+      try {
+        Files.deleteIfExists(Paths.get(dbPath));
+      } catch (Exception e) {
+        e.printStackTrace();
+      }
+    }
   }
 }

tests/karate/src/test/java/be/utils/ScalaServer.java

@@ -12,27 +12,49 @@
 import java.util.stream.Stream;
 
 public class ScalaServer extends Server implements Configurable {
+  private String dbPath;
 
-  @Override
-  public boolean start() throws IOException {
-    return super.start(getCmd(), getDir(), getLogPath());
+  public ScalaServer(String host, int port, String dbPath, String logPath) {
+    super(host, port, port, port, logPath);
+    this.dbPath = dbPath;
   }
 
-  @Override
-  public void stop() {
-    super.stop();
+  public ScalaServer() {
+    this("127.0.0.1", 8000, null, null);
   }
 
   @Override
   public String[] getCmd() throws IOException {
-    String configPath = Paths.get("src", "main", "scala", "ch", "epfl", "pop", "config").toString();
+    Path workingDirectory = Paths.get("").toAbsolutePath();
+    Path tempDir = Files.createTempDirectory("scala-server");
+
+    // Create a temporary config file
+    Path configTemplate = workingDirectory.resolve("src/test/java/data/scala.template.conf");
+    String config = new String(Files.readAllBytes(configTemplate));
+    config = config.replace("{{host}}", host);
+    config = config.replace("{{port}}", String.valueOf(serverPort));
+    File configFile = new File(tempDir.toFile(), "application.conf");
+    Files.write(configFile.toPath(), config.getBytes());
+
+    // Create a temporary peer file
+    File peerFile = File.createTempFile("scala-peers", ".conf");
+    for (String peer : peers) {
+      Files.write(peerFile.toPath(), ("ws://" + peer + "/server\n").getBytes());
+    }
+
+    if (this.dbPath == null) {
+      dbPath = Files.createTempDirectory("scala-db").toString();
+    }
+
     String securityDirPath = Paths.get("src", "security").toString();
     File targetJar = getTargetJar();
 
     return new String[] {
       "java",
-      "-Dscala.config=" + configPath,
+      "-Dscala.config=" + tempDir.toString(),
+      "-Dscala.peerlist=" + peerFile.getCanonicalPath(),
       "-Dscala.security=" + securityDirPath,
+      "-Dscala.db=" + dbPath,
       "-jar", targetJar.getCanonicalPath()
     };
   }
@@ -67,15 +89,14 @@ public String getDir() {
     return Paths.get("..", "..", "be2-scala").toString();
   }
 
-  @Override
-  public String getLogPath() {
-    return Paths.get("scala.log").toString();
-  }
-
   @Override
   public void deleteDatabaseDir() {
-    System.out.println("Deleting database...");
-    Path path = Paths.get("..", "..", "be2-scala", "database");
+    if (dbPath == null) {
+      System.out.println("No database to delete");
+      return;
+    }
+
+    Path path = Paths.get(dbPath);
     try (Stream<Path> walk = Files.walk(path)) {
       walk.sorted(Comparator.reverseOrder())
           .map(Path::toFile)