code: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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 org.apache.skywalking.oap.meter.analyzer.dsl;
  
  import com.google.common.collect.ImmutableMap;
  import lombok.extern.slf4j.Slf4j;
  import org.junit.jupiter.params.ParameterizedTest;
  import org.junit.jupiter.params.provider.MethodSource;
  
  import java.util.Arrays;
  import java.util.Collection;
  
  import static com.google.common.collect.ImmutableMap.of;
  import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
  import static org.junit.jupiter.api.Assertions.fail;
  
  @Slf4j
  public class TagFilterTest {
      public static Collection<Object[]> data() {
          final SampleFamily sf =
              SampleFamilyBuilder.newBuilder(
                  Sample.builder().labels(of("idc", "t2")).value(50).name("http_success_request").build(),
                  Sample.builder()
                        .labels(of("idc", "t3", "region", "cn", "svc", "catalog"))
                        .value(50)
                        .name("http_success_request")
                        .build(),
                  Sample.builder()
                        .labels(of("idc", "t1", "region", "us", "svc", "product"))
                        .value(50)
                        .name("http_success_request")
                        .build(),
                  Sample.builder()
                        .labels(of("idc", "t1", "region", "us", "instance", "10.0.0.1"))
                        .name("http_success_request")
                        .value(50)
                        .build(),
                  Sample.builder()
                        .labels(of("idc", "t3", "region", "cn", "instance", "10.0.0.1"))
                        .name("http_success_request")
                        .value(3)
                        .build()
              ).build();
          return Arrays.asList(new Object[][] {
              {
                  "tagEqual",
                  of("http_success_request", sf),
                  "http_success_request.tagEqual('idc', 't3')",
                  Result.success(SampleFamilyBuilder.newBuilder(
                      Sample.builder()
                            .labels(of("idc", "t3", "region", "cn", "svc", "catalog"))
                            .value(50)
                            .name("http_success_request")
                            .build(),
                      Sample.builder()
                            .labels(of("idc", "t3", "region", "cn", "instance", "10.0.0.1"))
                            .name("http_success_request")
                            .value(3)
                            .build()
                  ).build()),
                  false,
                  },
              {
                  "tagNotEqual",
                  of("http_success_request", sf),
                  "http_success_request.tagNotEqual('idc', 't1')",
                  Result.success(SampleFamilyBuilder.newBuilder(
                      Sample.builder().labels(of("idc", "t2")).value(50).name("http_success_request").build(),
                      Sample.builder()
                            .labels(of("idc", "t3", "region", "cn", "svc", "catalog"))
                            .value(50)
                            .name("http_success_request")
                            .build(),
                      Sample.builder()
                            .labels(of("idc", "t3", "region", "cn", "instance", "10.0.0.1"))
                            .name("http_success_request")
                            .value(3)
                            .build()
                  ).build()),
                  false,
                  },
              {
                  "tagMatch",
                  of("http_success_request", sf),
                  "http_success_request.tagMatch('idc', 't1|t2|t3')",
                  Result.success(sf),
                  false,
                  },
              {
                  "tagNotMatch",
                  of("http_success_request", sf),
                  "http_success_request.tagNotMatch('idc', 't1|t3')",
                  Result.success(SampleFamilyBuilder.newBuilder(
                      Sample.builder().labels(of("idc", "t2")).value(50).name("http_success_request").build()).build()),
                  false,
                  },
              });
      }
  
      @ParameterizedTest(name = "{0}")
      @MethodSource("data")
      public void test(String name,
                       ImmutableMap<String, SampleFamily> input,
                       String expression,
                       Result want,
                       boolean isThrow) {
          Expression e = DSL.parse(expression);
          Result r = null;
          try {
              r = e.run(input);
          } catch (Throwable t) {
              if (isThrow) {
                  return;
              }
              log.error("Test failed", t);
              fail("Should not throw anything");
          }
          if (isThrow) {
              fail("Should throw something");
          }
          assertThat(r).isEqualTo(want);
      }
  }
  