/*
 * Copyright ConsenSys AG.
 *
 * 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.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
package org.hyperledger.besu.ethereum.api.query;

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;

import java.util.function.Supplier;
import java.util.stream.Stream;

import org.junit.jupiter.api.Test;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.MethodSource;

public class BackendQueryTest<T> {
  public static Stream<Arguments> data() {
    return Stream.of(
        Arguments.of(supplierOf(false), null, true, RuntimeException.class, "Timeout expired"),
        Arguments.of(supplierOf(true), "expected return", false, null, null));
  }

  private static Supplier<Boolean> supplierOf(final boolean val) {
    return () -> val;
  }

  @ParameterizedTest
  @MethodSource("data")
  public void test(
      final Supplier<Boolean> alive,
      final Object wantReturn,
      final boolean wantException,
      final Class<T> wantExceptionClass,
      final String wantExceptionMessage)
      throws Exception {
    if (wantException) {
      assertThatThrownBy(() -> BackendQuery.runIfAlive(() -> wantReturn, alive))
          .isInstanceOf(wantExceptionClass)
          .hasMessage(wantExceptionMessage);
    } else {
      assertThat(BackendQuery.runIfAlive(() -> wantReturn, alive)).isEqualTo(wantReturn);
    }
  }

  @Test
  void dryRunDetector() {
    assertThat(true)
        .withFailMessage("This test is here so gradle --dry-run executes this class")
        .isTrue();
  }
}
