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/*
* 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.assertTrue;
import static org.junit.jupiter.api.Assertions.assertEquals;
@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() throws Exception {
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");
}
}