/*
 * Copyright OpenSearch Contributors
 * SPDX-License-Identifier: Apache-2.0
 */

package org.opensearch.dataprepper.expression;

import org.opensearch.dataprepper.model.event.Event;
import org.opensearch.dataprepper.model.event.JacksonEvent;
import org.junit.jupiter.api.Test;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.hamcrest.CoreMatchers.equalTo;

public class ExpressionEvaluatorTest {
    private ExpressionEvaluator expressionEvaluator;
    class TestExpressionEvaluator implements ExpressionEvaluator {
        public Object evaluate(final String statement, final Event event) {
            return event.get(statement, Object.class);
        }

        @Override
        public Boolean isValidExpressionStatement(final String statement) {
            return true;
        }
    }

    @Test
    public void testDefaultEvaluateConditional() {
        expressionEvaluator = new TestExpressionEvaluator();
        assertThat(expressionEvaluator.evaluateConditional("/status", event("{\"status\":true}")), equalTo(true));
        
    }

    @Test
    public void testDefaultEvaluateConditionalThrows() {
        expressionEvaluator = new TestExpressionEvaluator();
        assertThrows(ClassCastException.class, () -> expressionEvaluator.evaluateConditional("/status", event("{\"status\":200}")));
    }

    private static Event event(final String data) {
        return JacksonEvent.builder().withEventType("event").withData(data).build();
    }
}