add unit test Teamscale need

Author: pengpeng-lu

fdb-relational-core/src/test/java/com/apple/foundationdb/relational/recordlayer/query/functions/CompilableSqlFunctionTest.java

@@ -0,0 +1,82 @@
+/*
+ * CompilableSqlFunctionTest.java
+ *
+ * This source file is part of the FoundationDB open source project
+ *
+ * Copyright 2021-2025 Apple Inc. and the FoundationDB project authors
+ *
+ * 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 com.apple.foundationdb.relational.recordlayer.query.functions;
+
+import com.apple.foundationdb.record.RecordCoreException;
+import com.apple.foundationdb.record.query.plan.cascades.expressions.RelationalExpression;
+import com.apple.foundationdb.record.query.plan.cascades.expressions.SelectExpression;
+import com.apple.foundationdb.relational.recordlayer.query.Literals;
+import com.google.common.collect.ImmutableList;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import javax.annotation.Nonnull;
+import java.util.Optional;
+
+/**
+ * Tests for {@link CompilableSqlFunction}.
+ */
+class CompilableSqlFunctionTest {
+
+    @Test
+    void toProtoThrowsRecordCoreException() {
+        final var function = createTestFunction();
+
+        final var exception = Assertions.assertThrows(RecordCoreException.class, function::toProto);
+
+        Assertions.assertNotNull(exception);
+        Assertions.assertEquals("attempt to serialize compiled SQL function", exception.getMessage());
+    }
+
+    /**
+     * Creates a simple test function with basic parameters.
+     */
+    @Nonnull
+    private CompilableSqlFunction createTestFunction() {
+        return new CompilableSqlFunction(
+                "testFunction",
+                ImmutableList.of("param1", "param2"),
+                ImmutableList.of(
+                        com.apple.foundationdb.record.query.plan.cascades.typing.Type.primitiveType(
+                                com.apple.foundationdb.record.query.plan.cascades.typing.Type.TypeCode.INT),
+                        com.apple.foundationdb.record.query.plan.cascades.typing.Type.primitiveType(
+                                com.apple.foundationdb.record.query.plan.cascades.typing.Type.TypeCode.STRING)
+                ),
+                ImmutableList.of(Optional.empty(), Optional.empty()),
+                Optional.of(com.apple.foundationdb.record.query.plan.cascades.CorrelationIdentifier.of("test")),
+                createDummyBody(),
+                Literals.empty()
+        );
+    }
+
+    /**
+     * Creates a dummy relational expression to use as function body.
+     */
+    @Nonnull
+    private RelationalExpression createDummyBody() {
+        // Create a minimal SelectExpression as the function body
+        return new SelectExpression(
+                com.apple.foundationdb.record.query.plan.cascades.values.RecordConstructorValue.ofUnnamed(ImmutableList.of()),
+                ImmutableList.of(),
+                ImmutableList.of()
+        );
+    }
+}