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diff --git a/config-model/src/test/java/com/yahoo/schema/RankingExpressionLoopDetectionTestCase.java b/config-model/src/test/java/com/yahoo/schema/RankingExpressionLoopDetectionTestCase.java
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+// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.schema;
+
+import com.yahoo.schema.parser.ParseException;
+import com.yahoo.yolean.Exceptions;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.fail;
+
+/**
+ * @author bratseth
+ */
+public class RankingExpressionLoopDetectionTestCase {
+
+ @Test
+ public void testSelfLoop() throws ParseException {
+ RankProfileRegistry rankProfileRegistry = new RankProfileRegistry();
+ ApplicationBuilder builder = new ApplicationBuilder(rankProfileRegistry);
+ builder.addSchema(
+ "search test {\n" +
+ " document test { \n" +
+ " field a type string { \n" +
+ " indexing: index \n" +
+ " }\n" +
+ " }\n" +
+ " \n" +
+ " rank-profile test {\n" +
+ " first-phase {\n" +
+ " expression: foo\n" +
+ " }\n" +
+ " function foo() {\n" +
+ " expression: foo\n" +
+ " }\n" +
+ " }\n" +
+ "\n" +
+ "}\n");
+ try {
+ builder.build(true);
+ fail("Excepted exception");
+ }
+ catch (IllegalArgumentException e) {
+ assertEquals("In schema 'test', rank profile 'test': The function 'foo' is invalid: foo is invalid: Invocation loop: foo -> foo",
+ Exceptions.toMessageString(e));
+ }
+ }
+
+ @Test
+ public void testNestedLoop() throws ParseException {
+ RankProfileRegistry rankProfileRegistry = new RankProfileRegistry();
+ ApplicationBuilder builder = new ApplicationBuilder(rankProfileRegistry);
+ builder.addSchema(
+ "search test {\n" +
+ " document test { \n" +
+ " field a type string { \n" +
+ " indexing: index \n" +
+ " }\n" +
+ " }\n" +
+ " \n" +
+ " rank-profile test {\n" +
+ " first-phase {\n" +
+ " expression: foo\n" +
+ " }\n" +
+ " function foo() {\n" +
+ " expression: arg(5)\n" +
+ " }\n" +
+ " function arg(a1) {\n" +
+ " expression: foo + a1*2\n" +
+ " }\n" +
+ " }\n" +
+ "\n" +
+ "}\n");
+ try {
+ builder.build(true);
+ fail("Excepted exception");
+ }
+ catch (IllegalArgumentException e) {
+ assertEquals("In schema 'test', rank profile 'test': The function 'foo' is invalid: arg(5) is invalid: foo is invalid: arg(5) is invalid: Invocation loop: arg(5) -> foo -> arg(5)",
+ Exceptions.toMessageString(e));
+ }
+ }
+
+ @Test
+ public void testSelfArgumentLoop() throws ParseException {
+ RankProfileRegistry rankProfileRegistry = new RankProfileRegistry();
+ ApplicationBuilder builder = new ApplicationBuilder(rankProfileRegistry);
+ builder.addSchema(
+ "search test {\n" +
+ " document test { \n" +
+ " field a type string { \n" +
+ " indexing: index \n" +
+ " }\n" +
+ " }\n" +
+ " \n" +
+ " rank-profile test {\n" +
+ " first-phase {\n" +
+ " expression: foo\n" +
+ " }\n" +
+ " function foo() {\n" +
+ " expression: arg(foo)\n" +
+ " }\n" +
+ " function arg(a1) {\n" +
+ " expression: a1*2\n" +
+ " }\n" +
+ " }\n" +
+ "\n" +
+ "}\n");
+ try {
+ builder.build(true);
+ fail("Excepted exception");
+ }
+ catch (IllegalArgumentException e) {
+ assertEquals("In schema 'test', rank profile 'test': The function 'foo' is invalid: arg(foo) is invalid: a1 is invalid: foo is invalid: arg(foo) is invalid: Invocation loop: arg(foo) -> foo -> arg(foo)",
+ Exceptions.toMessageString(e));
+ }
+ }
+
+ @Test
+ public void testNoLoopWithSameLocalArgument() throws ParseException {
+ RankProfileRegistry rankProfileRegistry = new RankProfileRegistry();
+ ApplicationBuilder builder = new ApplicationBuilder(rankProfileRegistry);
+ builder.addSchema(
+ "search test {\n" +
+ " document test { \n" +
+ " field a type string { \n" +
+ " indexing: index \n" +
+ " }\n" +
+ " }\n" +
+ " \n" +
+ " rank-profile test {\n" +
+ " first-phase {\n" +
+ " expression: foo(3)\n" +
+ " }\n" +
+ " function foo(a1) {\n" +
+ " expression: bar(3)\n" +
+ " }\n" +
+ " function bar(a1) {\n" +
+ " expression: a1*2\n" +
+ " }\n" +
+ " }\n" +
+ "\n" +
+ "}\n");
+ builder.build(true);
+ }
+
+ @Test
+ public void testNoLoopWithMultipleInvocations() throws ParseException {
+ RankProfileRegistry rankProfileRegistry = new RankProfileRegistry();
+ ApplicationBuilder builder = new ApplicationBuilder(rankProfileRegistry);
+ builder.addSchema(
+ "search test {\n" +
+ " document test { \n" +
+ " field a type string { \n" +
+ " indexing: index \n" +
+ " }\n" +
+ " }\n" +
+ " \n" +
+ " rank-profile test {\n" +
+ " first-phase {\n" +
+ " expression: foo(3)\n" +
+ " }\n" +
+ " function foo(a1) {\n" +
+ " expression: bar(3) + bar(a1)\n" +
+ " }\n" +
+ " function bar(a1) {\n" +
+ " expression: a1*2\n" +
+ " }\n" +
+ " }\n" +
+ "\n" +
+ "}\n");
+ builder.build(true);
+ }
+
+ @Test
+ public void testNoLoopWithBoundIdentifiers() throws ParseException {
+ RankProfileRegistry rankProfileRegistry = new RankProfileRegistry();
+ ApplicationBuilder builder = new ApplicationBuilder(rankProfileRegistry);
+ builder.addSchema(
+ "search test {\n" +
+ " document test { \n" +
+ " }\n" +
+ " rank-profile test {\n" +
+ " first-phase {\n" +
+ " expression: foo(bar(2))\n" +
+ " }\n" +
+ " function foo(x) {\n" +
+ " expression: x * x\n" +
+ " }\n" +
+ " function bar(x) {\n" +
+ " expression: x + x\n" +
+ " }\n" +
+ " }\n" +
+ "}\n");
+ builder.build(true);
+ }
+
+ @Test
+ public void testNoLoopWithTheSameNestedIdentifierWhichIsUnbound() throws ParseException {
+ RankProfileRegistry rankProfileRegistry = new RankProfileRegistry();
+ ApplicationBuilder builder = new ApplicationBuilder(rankProfileRegistry);
+ builder.addSchema(
+ "search test {\n" +
+ " document test { \n" +
+ " }\n" +
+ " rank-profile test {\n" +
+ " first-phase {\n" +
+ " expression: foo()\n" +
+ " }\n" +
+ " function foo() {\n" +
+ " expression: bar(x)\n" +
+ " }\n" +
+ " function bar(x) {\n" +
+ " expression: x + x\n" +
+ " }\n" +
+ " }\n" +
+ "}\n");
+ builder.build(true);
+ }
+
+ @Test
+ public void testNoLoopWithTheSameAlternatingNestedIdentifierWhichIsUnbound() throws ParseException {
+ RankProfileRegistry rankProfileRegistry = new RankProfileRegistry();
+ ApplicationBuilder builder = new ApplicationBuilder(rankProfileRegistry);
+ builder.addSchema(
+ "search test {\n" +
+ " document test { \n" +
+ " }\n" +
+ " rank-profile test {\n" +
+ " first-phase {\n" +
+ " expression: foo()\n" +
+ " }\n" +
+ " function foo() {\n" +
+ " expression: bar(x)\n" +
+ " }\n" +
+ " function bar(y) {\n" +
+ " expression: baz(y)\n" +
+ " }\n" +
+ " function baz(x) {\n" +
+ " expression: x + x\n" +
+ " }\n" +
+ " }\n" +
+ "}\n");
+ builder.build(true);
+ }
+
+}