Add availability test for incubating classes

semconv-incubating/src/test/java/io/opentelemetry/semconv/incubating/IncubatingAvailabilityTest.java

@@ -0,0 +1,24 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.semconv.incubating;
+
+import static org.assertj.core.api.Assertions.assertThatCode;
+
+import org.junit.jupiter.api.Test;
+
+/** A placeholder test which verifies that the generated classes compile and can load. */
+public class IncubatingAvailabilityTest {
+
+  @Test
+  void available() {
+    classAvailable("io.opentelemetry.semconv.incubating.IncubatingResourceAttributes");
+    classAvailable("io.opentelemetry.semconv.incubating.IncubatingSemanticAttributes");
+  }
+
+  private static void classAvailable(String fqcn) {
+    assertThatCode(() -> Class.forName(fqcn)).doesNotThrowAnyException();
+  }
+}