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.kafka.message;
  
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.Timeout;
  
  import java.io.StringWriter;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  @Timeout(120)
  public class VersionConditionalTest {
  
      static void claimEquals(CodeBuffer buffer, String... lines) throws Exception {
          StringWriter stringWriter = new StringWriter();
          buffer.write(stringWriter);
          StringBuilder expectedStringBuilder = new StringBuilder();
          for (String line : lines) {
              expectedStringBuilder.append(String.format(line));
          }
          assertEquals(stringWriter.toString(), expectedStringBuilder.toString());
      }
  
      @Test
      public void testAlwaysFalseConditional() throws Exception {
          CodeBuffer buffer = new CodeBuffer();
          VersionConditional.
              forVersions(Versions.parse("1-2", null), Versions.parse("3+", null)).
              ifMember(__ -> {
                  buffer.printf("System.out.println(\"hello world\");%n");
              }).
              ifNotMember(__ -> {
                  buffer.printf("System.out.println(\"foobar\");%n");
              }).
              generate(buffer);
          claimEquals(buffer,
              "System.out.println(\"foobar\");%n");
      }
  
      @Test
      public void testAnotherAlwaysFalseConditional() throws Exception {
          CodeBuffer buffer = new CodeBuffer();
          VersionConditional.
              forVersions(Versions.parse("3+", null), Versions.parse("1-2", null)).
              ifMember(__ -> {
                  buffer.printf("System.out.println(\"hello world\");%n");
              }).
              ifNotMember(__ -> {
                  buffer.printf("System.out.println(\"foobar\");%n");
              }).
              generate(buffer);
          claimEquals(buffer,
              "System.out.println(\"foobar\");%n");
      }
  
      @Test
      public void testAllowMembershipCheckAlwaysFalseFails() {
          try {
              CodeBuffer buffer = new CodeBuffer();
              VersionConditional.
                  forVersions(Versions.parse("1-2", null), Versions.parse("3+", null)).
                  ifMember(__ -> {
                      buffer.printf("System.out.println(\"hello world\");%n");
                  }).
                  ifNotMember(__ -> {
                      buffer.printf("System.out.println(\"foobar\");%n");
                  }).
                  allowMembershipCheckAlwaysFalse(false).
                  generate(buffer);
          } catch (RuntimeException e) {
              assertTrue(e.getMessage().contains("no versions in common"));
          }
      }
  
      @Test
      public void testAlwaysTrueConditional() throws Exception {
          CodeBuffer buffer = new CodeBuffer();
          VersionConditional.
              forVersions(Versions.parse("1-5", null), Versions.parse("2-4", null)).
              ifMember(__ -> {
                  buffer.printf("System.out.println(\"hello world\");%n");
              }).
              ifNotMember(__ -> {
                  buffer.printf("System.out.println(\"foobar\");%n");
              }).
              allowMembershipCheckAlwaysFalse(false).
              generate(buffer);
          claimEquals(buffer,
              "System.out.println(\"hello world\");%n");
      }
  
      @Test
      public void testAlwaysTrueConditionalWithAlwaysEmitBlockScope() throws Exception {
          CodeBuffer buffer = new CodeBuffer();
          VersionConditional.
              forVersions(Versions.parse("1-5", null), Versions.parse("2-4", null)).
              ifMember(__ -> {
                  buffer.printf("System.out.println(\"hello world\");%n");
              }).
              ifNotMember(__ -> {
                  buffer.printf("System.out.println(\"foobar\");%n");
              }).
              alwaysEmitBlockScope(true).
              generate(buffer);
          claimEquals(buffer,
              "{%n",
              "    System.out.println(\"hello world\");%n",
              "}%n");
      }
  
      @Test
      public void testLowerRangeCheckWithElse() throws Exception {
          CodeBuffer buffer = new CodeBuffer();
          VersionConditional.
              forVersions(Versions.parse("1+", null), Versions.parse("0-100", null)).
              ifMember(__ -> {
                  buffer.printf("System.out.println(\"hello world\");%n");
              }).
              ifNotMember(__ -> {
                  buffer.printf("System.out.println(\"foobar\");%n");
              }).
              generate(buffer);
          claimEquals(buffer,
              "if (_version >= 1) {%n",
              "    System.out.println(\"hello world\");%n",
              "} else {%n",
              "    System.out.println(\"foobar\");%n",
              "}%n");
      }
  
      @Test
      public void testLowerRangeCheckWithIfMember() throws Exception {
          CodeBuffer buffer = new CodeBuffer();
          VersionConditional.
              forVersions(Versions.parse("1+", null), Versions.parse("0-100", null)).
              ifMember(__ -> {
                  buffer.printf("System.out.println(\"hello world\");%n");
              }).
              generate(buffer);
          claimEquals(buffer,
              "if (_version >= 1) {%n",
              "    System.out.println(\"hello world\");%n",
              "}%n");
      }
  
      @Test
      public void testLowerRangeCheckWithIfNotMember() throws Exception {
          CodeBuffer buffer = new CodeBuffer();
          VersionConditional.
              forVersions(Versions.parse("1+", null), Versions.parse("0-100", null)).
              ifNotMember(__ -> {
                  buffer.printf("System.out.println(\"hello world\");%n");
              }).
              generate(buffer);
          claimEquals(buffer,
              "if (_version < 1) {%n",
              "    System.out.println(\"hello world\");%n",
              "}%n");
      }
  
      @Test
      public void testUpperRangeCheckWithElse() throws Exception {
          CodeBuffer buffer = new CodeBuffer();
          VersionConditional.
              forVersions(Versions.parse("0-10", null), Versions.parse("4+", null)).
              ifMember(__ -> {
                  buffer.printf("System.out.println(\"hello world\");%n");
              }).
              ifNotMember(__ -> {
                  buffer.printf("System.out.println(\"foobar\");%n");
              }).
              generate(buffer);
          claimEquals(buffer,
              "if (_version <= 10) {%n",
              "    System.out.println(\"hello world\");%n",
              "} else {%n",
              "    System.out.println(\"foobar\");%n",
              "}%n");
      }
  
      @Test
      public void testUpperRangeCheckWithIfMember() throws Exception {
          CodeBuffer buffer = new CodeBuffer();
          VersionConditional.
              forVersions(Versions.parse("0-10", null), Versions.parse("4+", null)).
              ifMember(__ -> {
                  buffer.printf("System.out.println(\"hello world\");%n");
              }).
              generate(buffer);
          claimEquals(buffer,
              "if (_version <= 10) {%n",
              "    System.out.println(\"hello world\");%n",
              "}%n");
      }
  
      @Test
      public void testUpperRangeCheckWithIfNotMember() throws Exception {
          CodeBuffer buffer = new CodeBuffer();
          VersionConditional.
              forVersions(Versions.parse("1+", null), Versions.parse("0-100", null)).
              ifNotMember(__ -> {
                  buffer.printf("System.out.println(\"hello world\");%n");
              }).
              generate(buffer);
          claimEquals(buffer,
              "if (_version < 1) {%n",
              "    System.out.println(\"hello world\");%n",
              "}%n");
      }
  
      @Test
      public void testFullRangeCheck() throws Exception {
          CodeBuffer buffer = new CodeBuffer();
          VersionConditional.
              forVersions(Versions.parse("5-10", null), Versions.parse("1+", null)).
              ifMember(__ -> {
                  buffer.printf("System.out.println(\"hello world\");%n");
              }).
              allowMembershipCheckAlwaysFalse(false).
              generate(buffer);
          claimEquals(buffer,
              "if ((_version >= 5) && (_version <= 10)) {%n",
              "    System.out.println(\"hello world\");%n",
              "}%n");
      }
  }
  