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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.grouping.request;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
/**
* @author Simon Thoresen Hult
*/
public class MathResolverTestCase {
// --------------------------------------------------------------------------------
//
// Tests
//
// --------------------------------------------------------------------------------
@Test
void testOperators() {
MathResolver resolver = new MathResolver();
resolver.push(MathResolver.Type.ADD, new LongValue(1));
resolver.push(MathResolver.Type.ADD, new LongValue(2));
assertEquals("add(1, 2)",
resolver.resolve().toString());
resolver = new MathResolver();
resolver.push(MathResolver.Type.ADD, new LongValue(1));
resolver.push(MathResolver.Type.SUB, new LongValue(2));
assertEquals("sub(1, 2)",
resolver.resolve().toString());
resolver = new MathResolver();
resolver.push(MathResolver.Type.ADD, new LongValue(1));
resolver.push(MathResolver.Type.DIV, new LongValue(2));
assertEquals("div(1, 2)",
resolver.resolve().toString());
resolver = new MathResolver();
resolver.push(MathResolver.Type.ADD, new LongValue(1));
resolver.push(MathResolver.Type.MOD, new LongValue(2));
assertEquals("mod(1, 2)",
resolver.resolve().toString());
resolver = new MathResolver();
resolver.push(MathResolver.Type.ADD, new LongValue(1));
resolver.push(MathResolver.Type.MUL, new LongValue(2));
assertEquals("mul(1, 2)",
resolver.resolve().toString());
}
@Test
void testOperatorPrecedence() {
assertResolve("add(add(1, 2), 3)", MathResolver.Type.ADD, MathResolver.Type.ADD);
assertResolve("add(1, sub(2, 3))", MathResolver.Type.ADD, MathResolver.Type.SUB);
assertResolve("add(1, div(2, 3))", MathResolver.Type.ADD, MathResolver.Type.DIV);
assertResolve("add(1, mod(2, 3))", MathResolver.Type.ADD, MathResolver.Type.MOD);
assertResolve("add(1, mul(2, 3))", MathResolver.Type.ADD, MathResolver.Type.MUL);
assertResolve("add(sub(1, 2), 3)", MathResolver.Type.SUB, MathResolver.Type.ADD);
assertResolve("sub(sub(1, 2), 3)", MathResolver.Type.SUB, MathResolver.Type.SUB);
assertResolve("sub(1, div(2, 3))", MathResolver.Type.SUB, MathResolver.Type.DIV);
assertResolve("sub(1, mod(2, 3))", MathResolver.Type.SUB, MathResolver.Type.MOD);
assertResolve("sub(1, mul(2, 3))", MathResolver.Type.SUB, MathResolver.Type.MUL);
assertResolve("add(div(1, 2), 3)", MathResolver.Type.DIV, MathResolver.Type.ADD);
assertResolve("sub(div(1, 2), 3)", MathResolver.Type.DIV, MathResolver.Type.SUB);
assertResolve("div(div(1, 2), 3)", MathResolver.Type.DIV, MathResolver.Type.DIV);
assertResolve("div(1, mod(2, 3))", MathResolver.Type.DIV, MathResolver.Type.MOD);
assertResolve("div(1, mul(2, 3))", MathResolver.Type.DIV, MathResolver.Type.MUL);
assertResolve("add(mod(1, 2), 3)", MathResolver.Type.MOD, MathResolver.Type.ADD);
assertResolve("sub(mod(1, 2), 3)", MathResolver.Type.MOD, MathResolver.Type.SUB);
assertResolve("div(mod(1, 2), 3)", MathResolver.Type.MOD, MathResolver.Type.DIV);
assertResolve("mod(mod(1, 2), 3)", MathResolver.Type.MOD, MathResolver.Type.MOD);
assertResolve("mod(1, mul(2, 3))", MathResolver.Type.MOD, MathResolver.Type.MUL);
assertResolve("add(mul(1, 2), 3)", MathResolver.Type.MUL, MathResolver.Type.ADD);
assertResolve("sub(mul(1, 2), 3)", MathResolver.Type.MUL, MathResolver.Type.SUB);
assertResolve("div(mul(1, 2), 3)", MathResolver.Type.MUL, MathResolver.Type.DIV);
assertResolve("mod(mul(1, 2), 3)", MathResolver.Type.MUL, MathResolver.Type.MOD);
assertResolve("mul(mul(1, 2), 3)", MathResolver.Type.MUL, MathResolver.Type.MUL);
assertResolve("add(1, sub(div(2, mod(3, mul(4, 5))), 6))",
MathResolver.Type.ADD, MathResolver.Type.DIV, MathResolver.Type.MOD,
MathResolver.Type.MUL, MathResolver.Type.SUB);
assertResolve("add(sub(1, div(mod(mul(2, 3), 4), 5)), 6)",
MathResolver.Type.SUB, MathResolver.Type.MUL, MathResolver.Type.MOD,
MathResolver.Type.DIV, MathResolver.Type.ADD);
assertResolve("add(1, sub(2, div(3, mod(4, mul(5, 6)))))",
MathResolver.Type.ADD, MathResolver.Type.SUB, MathResolver.Type.DIV,
MathResolver.Type.MOD, MathResolver.Type.MUL);
assertResolve("add(sub(div(mod(mul(1, 2), 3), 4), 5), 6)",
MathResolver.Type.MUL, MathResolver.Type.MOD, MathResolver.Type.DIV,
MathResolver.Type.SUB, MathResolver.Type.ADD);
}
@Test
void testOperatorSupport() {
MathResolver resolver = new MathResolver();
for (MathResolver.Type type : MathResolver.Type.values()) {
if (type == MathResolver.Type.ADD) {
continue;
}
try {
resolver.push(type, new AttributeValue("foo"));
} catch (IllegalArgumentException e) {
assertEquals("First item in an arithmetic operation must be an addition.", e.getMessage());
}
}
}
// --------------------------------------------------------------------------------
//
// Utilities
//
// --------------------------------------------------------------------------------
private static void assertResolve(String expected, MathResolver.Type... types) {
MathResolver resolver = new MathResolver();
int val = 0;
resolver.push(MathResolver.Type.ADD, new LongValue(++val));
for (MathResolver.Type type : types) {
resolver.push(type, new LongValue(++val));
}
GroupingExpression exp = resolver.resolve();
assertNotNull(exp);
assertEquals(expected, exp.toString());
}
}
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