content: /*
   * 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.calcite.adapter.enumerable;
  
  import org.apache.calcite.linq4j.tree.ClassDeclaration;
  import org.apache.calcite.linq4j.tree.Expressions;
  import org.apache.calcite.linq4j.tree.FieldDeclaration;
  
  import com.google.common.collect.ImmutableList;
  
  import org.junit.jupiter.api.Test;
  
  import java.lang.reflect.Modifier;
  import java.util.Arrays;
  
  import static org.hamcrest.CoreMatchers.is;
  import static org.hamcrest.MatcherAssert.assertThat;
  
  /**
   * Tests for {@link EnumerableInterpretable.StaticFieldDetector}.
   */
  public final class StaticFieldDetectorTest {
  
    @Test void testClassWithoutStaticFields() {
      ClassDeclaration classDeclaration =
          createClassDeclaration(
              new FieldDeclaration(
                  Modifier.PUBLIC,
                  Expressions.parameter(int.class, "x"),
                  Expressions.constant(0)));
  
      EnumerableInterpretable.StaticFieldDetector detector =
          new EnumerableInterpretable.StaticFieldDetector();
      classDeclaration.accept(detector);
      assertThat(detector.containsStaticField, is(false));
    }
  
    @Test void testClassWithOnlyStaticFields() {
      ClassDeclaration classDeclaration =
          createClassDeclaration(
              new FieldDeclaration(
                  Modifier.PUBLIC | Modifier.STATIC,
                  Expressions.parameter(int.class, "x"),
                  Expressions.constant(0)),
              new FieldDeclaration(
                  Modifier.STATIC,
                  Expressions.parameter(int.class, "y"),
                  Expressions.constant(0)));
  
      EnumerableInterpretable.StaticFieldDetector detector =
          new EnumerableInterpretable.StaticFieldDetector();
      classDeclaration.accept(detector);
      assertThat(detector.containsStaticField, is(true));
    }
  
    @Test void testClassWithStaticAndNonStaticFields() {
      ClassDeclaration classDeclaration =
          createClassDeclaration(
              new FieldDeclaration(
                  Modifier.PUBLIC | Modifier.STATIC,
                  Expressions.parameter(int.class, "x"),
                  Expressions.constant(0)),
              new FieldDeclaration(
                  Modifier.PUBLIC,
                  Expressions.parameter(int.class, "y"),
                  Expressions.constant(0)));
  
      EnumerableInterpretable.StaticFieldDetector detector =
          new EnumerableInterpretable.StaticFieldDetector();
      classDeclaration.accept(detector);
      assertThat(detector.containsStaticField, is(true));
    }
  
    @Test void testClassWithNonStaticAndStaticFields() {
      ClassDeclaration classDeclaration =
          createClassDeclaration(
              new FieldDeclaration(
                  Modifier.PUBLIC,
                  Expressions.parameter(int.class, "x"),
                  Expressions.constant(0)),
              new FieldDeclaration(
                  Modifier.PUBLIC | Modifier.STATIC,
                  Expressions.parameter(int.class, "y"),
                  Expressions.constant(0)));
  
      EnumerableInterpretable.StaticFieldDetector detector =
          new EnumerableInterpretable.StaticFieldDetector();
      classDeclaration.accept(detector);
      assertThat(detector.containsStaticField, is(true));
    }
  
    private static ClassDeclaration createClassDeclaration(FieldDeclaration... fieldDeclarations) {
      return new ClassDeclaration(
          Modifier.PUBLIC,
          "MyClass",
          null,
          ImmutableList.of(),
          Arrays.asList(fieldDeclarations));
    }
  
  }
  