flint client builder test

Signed-off-by: Sean Kao <[email protected]>

integ-test/src/test/scala/org/opensearch/flint/core/FlintClientBuilderSuite.scala

@@ -0,0 +1,29 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.opensearch.flint.core
+
+import scala.collection.JavaConverters._
+
+import org.opensearch.flint.OpenSearchSuite
+import org.scalatest.flatspec.AnyFlatSpec
+import org.scalatest.matchers.should.Matchers
+
+class FlintClientBuilderSuite extends AnyFlatSpec with OpenSearchSuite with Matchers {
+
+  behavior of "Flint client builder"
+
+  it should "build flint client" in {
+    val flintClient = FlintClientBuilder.build(new FlintOptions(openSearchOptions.asJava))
+    flintClient shouldBe a[FlintClient]
+  }
+
+  it should "fail if cannot instantiate metadata log service" in {
+    val options = openSearchOptions + (FlintOptions.CUSTOM_FLINT_METADATA_LOG_SERVICE_CLASS -> "org.dummy.Class")
+    the[RuntimeException] thrownBy {
+      FlintClientBuilder.build(new FlintOptions(options.asJava))
+    }
+  }
+}