Unit test for using non-existent driver

nb-engine/nb-engine-cli/src/test/java/io/nosqlbench/engine/cli/NBCLITest.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2020-2024 nosqlbench
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.nosqlbench.engine.cli;
+
+import io.nosqlbench.nb.api.errors.BasicError;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.AssertionsForClassTypes.assertThatExceptionOfType;
+
+public class NBCLITest {
+
+    @Test
+    public void testNonExistentDriverThrowsError() {
+        assertThatExceptionOfType(BasicError.class)
+            .isThrownBy(() -> new NBCLI("run driver=nonexistent --show-stacktraces"))
+            .withMessageContaining("Unable to load default driver adapter 'nonexistent'");
+    }
+}
+