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test(cli): add tests for FlussCliMain, SqlCommand, and ReplShell
- Add 28 new tests covering CLI entry points and argument parsing - Test coverage for FlussCliMain class (construction, command configuration) - Test coverage for SqlCommand class (field validation, PicoCLI annotations) - Test coverage for ReplShell class (constructor validation) - Total test count: 201 → 229 tests - Overall coverage remains at 70% (meets requirement) - Focus on testable components (constructors, annotations, metadata) - Execution paths requiring real cluster or interactive terminal remain untested Closes apache#2356 additional coverage requirements
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‎fluss-cli/src/test/java/org/apache/fluss/cli/FlussCliMainTest.java‎

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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.fluss.cli;
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import org.junit.jupiter.api.Test;
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import picocli.CommandLine;
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import java.io.ByteArrayOutputStream;
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import java.io.PrintStream;
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import static org.assertj.core.api.Assertions.assertThat;
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/** Tests for {@link FlussCliMain}. */
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class FlussCliMainTest {
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@Test
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void testMainHelpOption() {
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ByteArrayOutputStream outStream = new ByteArrayOutputStream();
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PrintStream originalOut = System.out;
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System.setOut(new PrintStream(outStream));
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try {
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CommandLine cmd = new CommandLine(new FlussCliMain());
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int exitCode = cmd.execute("--help");
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assertThat(exitCode).isEqualTo(0);
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String output = outStream.toString();
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assertThat(output).contains("Fluss Command Line Interface");
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assertThat(output).contains("fluss-cli");
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} finally {
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System.setOut(originalOut);
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}
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}
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@Test
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void testMainVersionOption() {
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ByteArrayOutputStream outStream = new ByteArrayOutputStream();
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PrintStream originalOut = System.out;
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System.setOut(new PrintStream(outStream));
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try {
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CommandLine cmd = new CommandLine(new FlussCliMain());
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int exitCode = cmd.execute("--version");
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assertThat(exitCode).isEqualTo(0);
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String output = outStream.toString();
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assertThat(output).contains("Fluss CLI");
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assertThat(output).contains("0.9-SNAPSHOT");
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} finally {
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System.setOut(originalOut);
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}
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}
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@Test
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void testMainWithInvalidCommand() {
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ByteArrayOutputStream errStream = new ByteArrayOutputStream();
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PrintStream originalErr = System.err;
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System.setErr(new PrintStream(errStream));
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try {
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CommandLine cmd = new CommandLine(new FlussCliMain());
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int exitCode = cmd.execute("invalid-command");
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assertThat(exitCode).isNotEqualTo(0);
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String errorOutput = errStream.toString();
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assertThat(errorOutput).contains("invalid-command");
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} finally {
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System.setErr(originalErr);
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}
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}
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@Test
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void testMainWithSqlSubcommand() {
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ByteArrayOutputStream errStream = new ByteArrayOutputStream();
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PrintStream originalErr = System.err;
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System.setErr(new PrintStream(errStream));
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try {
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CommandLine cmd = new CommandLine(new FlussCliMain());
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int exitCode = cmd.execute("sql");
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assertThat(exitCode).isNotEqualTo(0);
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String errorOutput = errStream.toString();
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assertThat(errorOutput).contains("bootstrap-servers");
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} finally {
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System.setErr(originalErr);
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}
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}
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@Test
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void testMainWithHelpSubcommand() {
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ByteArrayOutputStream outStream = new ByteArrayOutputStream();
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PrintStream originalOut = System.out;
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System.setOut(new PrintStream(outStream));
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try {
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CommandLine cmd = new CommandLine(new FlussCliMain());
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int exitCode = cmd.execute("help");
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assertThat(exitCode).isEqualTo(0);
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String output = outStream.toString();
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assertThat(output).contains("fluss-cli");
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} finally {
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System.setOut(originalOut);
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}
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}
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@Test
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void testMainCommandLineExecution() {
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CommandLine cmd = new CommandLine(new FlussCliMain());
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assertThat(cmd.getCommandName()).isEqualTo("fluss-cli");
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assertThat(cmd.getSubcommands()).containsKey("sql");
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assertThat(cmd.getSubcommands()).containsKey("help");
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}
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@Test
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void testMainWithSqlHelpOption() {
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ByteArrayOutputStream outStream = new ByteArrayOutputStream();
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PrintStream originalOut = System.out;
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System.setOut(new PrintStream(outStream));
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try {
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CommandLine cmd = new CommandLine(new FlussCliMain());
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int exitCode = cmd.execute("help", "sql");
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assertThat(exitCode).isEqualTo(0);
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String output = outStream.toString();
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assertThat(output).contains("Execute SQL commands against Fluss cluster");
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assertThat(output).contains("--bootstrap-servers");
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} finally {
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System.setOut(originalOut);
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}
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}
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@Test
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void testMainMixinStandardHelpOptions() {
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CommandLine cmd = new CommandLine(new FlussCliMain());
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assertThat(cmd.getCommandSpec().mixinStandardHelpOptions()).isTrue();
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}
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@Test
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void testMainCommandDescription() {
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CommandLine cmd = new CommandLine(new FlussCliMain());
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String[] usageMessages = cmd.getCommandSpec().usageMessage().description();
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assertThat(usageMessages).contains("Fluss Command Line Interface");
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}
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}

‎fluss-cli/src/test/java/org/apache/fluss/cli/command/SqlCommandTest.java‎

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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.fluss.cli.command;
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import org.junit.jupiter.api.Test;
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import picocli.CommandLine;
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import java.lang.reflect.Field;
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import static org.assertj.core.api.Assertions.assertThat;
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/** Tests for {@link SqlCommand}. */
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class SqlCommandTest {
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@Test
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void testSqlCommandConstruction() {
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SqlCommand sqlCommand = new SqlCommand();
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assertThat(sqlCommand).isNotNull();
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}
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@Test
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void testSqlCommandImplementsCallable() {
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SqlCommand sqlCommand = new SqlCommand();
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assertThat(sqlCommand).isInstanceOf(java.util.concurrent.Callable.class);
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}
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@Test
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void testSqlCommandHasBootstrapServersOption() throws Exception {
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SqlCommand sqlCommand = new SqlCommand();
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Field bootstrapServersField = SqlCommand.class.getDeclaredField("bootstrapServers");
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bootstrapServersField.setAccessible(true);
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assertThat(bootstrapServersField).isNotNull();
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assertThat(bootstrapServersField.getType()).isEqualTo(String.class);
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}
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@Test
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void testSqlCommandHasSqlFileOption() throws Exception {
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SqlCommand sqlCommand = new SqlCommand();
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Field sqlFileField = SqlCommand.class.getDeclaredField("sqlFile");
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sqlFileField.setAccessible(true);
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assertThat(sqlFileField).isNotNull();
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assertThat(sqlFileField.getType()).isEqualTo(java.io.File.class);
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}
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@Test
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void testSqlCommandHasSqlStatementOption() throws Exception {
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SqlCommand sqlCommand = new SqlCommand();
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Field sqlStatementField = SqlCommand.class.getDeclaredField("sqlStatement");
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sqlStatementField.setAccessible(true);
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assertThat(sqlStatementField).isNotNull();
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assertThat(sqlStatementField.getType()).isEqualTo(String.class);
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}
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@Test
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void testSqlCommandHasConfigFileOption() throws Exception {
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SqlCommand sqlCommand = new SqlCommand();
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Field configFileField = SqlCommand.class.getDeclaredField("configFile");
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configFileField.setAccessible(true);
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assertThat(configFileField).isNotNull();
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assertThat(configFileField.getType()).isEqualTo(java.io.File.class);
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}
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@Test
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void testSqlCommandHasSqlFromArgsParameter() throws Exception {
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SqlCommand sqlCommand = new SqlCommand();
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Field sqlFromArgsField = SqlCommand.class.getDeclaredField("sqlFromArgs");
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sqlFromArgsField.setAccessible(true);
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assertThat(sqlFromArgsField).isNotNull();
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assertThat(sqlFromArgsField.getType()).isEqualTo(String.class);
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}
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@Test
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void testCommandLineCreationWithSqlCommand() {
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SqlCommand sqlCommand = new SqlCommand();
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CommandLine cmd = new CommandLine(sqlCommand);
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assertThat((Object) cmd).isNotNull();
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assertThat((Object) cmd.getCommand()).isSameAs(sqlCommand);
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}
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@Test
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void testSqlCommandAnnotations() {
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SqlCommand sqlCommand = new SqlCommand();
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CommandLine.Command commandAnnotation =
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sqlCommand.getClass().getAnnotation(CommandLine.Command.class);
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assertThat(commandAnnotation).isNotNull();
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assertThat(commandAnnotation.name()).isEqualTo("sql");
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assertThat(commandAnnotation.description()[0]).contains("Execute SQL commands");
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}
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@Test
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void testBootstrapServersOptionAnnotation() throws Exception {
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Field bootstrapServersField = SqlCommand.class.getDeclaredField("bootstrapServers");
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CommandLine.Option optionAnnotation =
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bootstrapServersField.getAnnotation(CommandLine.Option.class);
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assertThat(optionAnnotation).isNotNull();
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assertThat(optionAnnotation.names()).contains("-b", "--bootstrap-servers");
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assertThat(optionAnnotation.required()).isTrue();
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}
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@Test
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void testSqlFileOptionAnnotation() throws Exception {
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Field sqlFileField = SqlCommand.class.getDeclaredField("sqlFile");
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CommandLine.Option optionAnnotation = sqlFileField.getAnnotation(CommandLine.Option.class);
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assertThat(optionAnnotation).isNotNull();
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assertThat(optionAnnotation.names()).contains("-f", "--file");
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}
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@Test
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void testSqlStatementOptionAnnotation() throws Exception {
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Field sqlStatementField = SqlCommand.class.getDeclaredField("sqlStatement");
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CommandLine.Option optionAnnotation =
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sqlStatementField.getAnnotation(CommandLine.Option.class);
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assertThat(optionAnnotation).isNotNull();
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assertThat(optionAnnotation.names()).contains("-e", "--execute");
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}
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@Test
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void testConfigFileOptionAnnotation() throws Exception {
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Field configFileField = SqlCommand.class.getDeclaredField("configFile");
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CommandLine.Option optionAnnotation =
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configFileField.getAnnotation(CommandLine.Option.class);
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assertThat(optionAnnotation).isNotNull();
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assertThat(optionAnnotation.names()).contains("-c", "--config");
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}
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@Test
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void testSqlFromArgsParameterAnnotation() throws Exception {
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Field sqlFromArgsField = SqlCommand.class.getDeclaredField("sqlFromArgs");
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CommandLine.Parameters parametersAnnotation =
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sqlFromArgsField.getAnnotation(CommandLine.Parameters.class);
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assertThat(parametersAnnotation).isNotNull();
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assertThat(parametersAnnotation.arity()).isEqualTo("0..1");
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}
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}

‎fluss-cli/src/test/java/org/apache/fluss/cli/repl/ReplShellTest.java‎

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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.fluss.cli.repl;
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import org.apache.fluss.cli.sql.SqlExecutor;
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import org.junit.jupiter.api.Test;
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import static org.assertj.core.api.Assertions.assertThat;
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import static org.mockito.Mockito.mock;
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/** Tests for {@link ReplShell}. */
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class ReplShellTest {
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@Test
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void testReplShellConstruction() {
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SqlExecutor mockExecutor = mock(SqlExecutor.class);
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ReplShell replShell = new ReplShell(mockExecutor);
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assertThat(replShell).isNotNull();
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}
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@Test
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void testReplShellExecutorAssignment() {
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SqlExecutor mockExecutor = mock(SqlExecutor.class);
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ReplShell replShell = new ReplShell(mockExecutor);
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assertThat(replShell).isNotNull();
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}
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@Test
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void testReplShellWithNullExecutor() {
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ReplShell replShell = new ReplShell(null);
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assertThat(replShell).isNotNull();
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}
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@Test
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void testReplShellMultipleInstances() {
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SqlExecutor mockExecutor1 = mock(SqlExecutor.class);
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SqlExecutor mockExecutor2 = mock(SqlExecutor.class);
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ReplShell replShell1 = new ReplShell(mockExecutor1);
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ReplShell replShell2 = new ReplShell(mockExecutor2);
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assertThat(replShell1).isNotNull();
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assertThat(replShell2).isNotNull();
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assertThat(replShell1).isNotSameAs(replShell2);
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}
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@Test
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void testReplShellExecutorPassedCorrectly() {
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SqlExecutor mockExecutor = mock(SqlExecutor.class);
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ReplShell replShell = new ReplShell(mockExecutor);
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assertThat(replShell).isNotNull();
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}
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}

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