wip: add integration test for custom SSL via gRPCs

Author: bevzzz

src/it/java/io/weaviate/integration/DefaultGrpcTransportITest.java

@@ -0,0 +1,55 @@
+package io.weaviate.integration;
+
+import java.io.IOException;
+import java.util.UUID;
+
+import javax.net.ssl.TrustManagerFactory;
+
+import org.assertj.core.api.Assertions;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import io.weaviate.ConcurrentTest;
+import io.weaviate.client6.v1.api.WeaviateClient;
+import io.weaviate.containers.Container;
+import io.weaviate.truststore.SingleTrustManagerFactory;
+import io.weaviate.truststore.SpyTrustManager;
+
+public class DefaultGrpcTransportITest extends ConcurrentTest {
+  private static final WeaviateClient _setupClient = Container.WEAVIATE.getClient();
+
+  private WeaviateClient client = Container.WEAVIATE.getClient();
+  private TrustManagerFactory tmf;
+
+  @Before
+  public void setUp() throws IOException {
+    tmf = SingleTrustManagerFactory.create(new SpyTrustManager());
+    client = WeaviateClient.custom(opt -> opt
+        .scheme("https")
+        .httpHost(Container.WEAVIATE.getHost())
+        .grpcHost(Container.WEAVIATE.getHost())
+        .httpPort(Container.WEAVIATE.getMappedPort(8080))
+        .grpcPort(Container.WEAVIATE.getMappedPort(50051))
+        .trustManagerFactory(tmf));
+  }
+
+  @Test
+  public void testCustomTrustStore_sync() throws IOException {
+    // Arrange
+    var nsThings = ns("Things");
+    _setupClient.collections.create(nsThings);
+
+    client.collections.use(nsThings).query.byId(UUID.randomUUID().toString());
+
+    var spy = SpyTrustManager.getSpy(tmf);
+    Assertions.assertThat(spy).get()
+        .as("HttpClient uses custom TrustManager")
+        .returns(true, SpyTrustManager::wasUsed);
+  }
+
+  @After
+  public void tearDown() throws IOException {
+    client.close();
+  }
+}