[HUDI-708] Add temps show and unit test for TempViewCommand (#1770)

hudi-cli/src/test/java/org/apache/hudi/cli/commands/TestTempViewCommand.java

@@ -0,0 +1,84 @@
+/*
+ * 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.hudi.cli.commands;
+
+import org.apache.hudi.cli.HoodieCLI;
+import org.apache.hudi.cli.testutils.AbstractShellBaseIntegrationTest;
+import org.apache.hudi.exception.HoodieException;
+
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.springframework.shell.core.CommandResult;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public class TestTempViewCommand extends AbstractShellBaseIntegrationTest {
+
+  private String tableName = "test_table";
+
+  @BeforeEach
+  public void init() {
+    List<List<Comparable>> rows = new ArrayList<>();
+    for (int i = 0; i < 3; i++) {
+      rows.add(Arrays.asList(new Comparable[] {"c1", "c2", "c3"}));
+    }
+    HoodieCLI.getTempViewProvider().createOrReplace(tableName, Arrays.asList("t1", "t2", "t3"), rows);
+  }
+
+  @AfterAll
+  public static void shutdown() {
+    if (HoodieCLI.getTempViewProvider() != null) {
+      HoodieCLI.closeTempViewProvider();
+    }
+  }
+
+  @Test
+  public void testQueryWithException() {
+    CommandResult cr = getShell().executeCommand(String.format("temp query --sql 'select * from %s'", "table_1"));
+    assertEquals(TempViewCommand.QUERY_FAIL, cr.getResult().toString());
+  }
+
+  @Test
+  public void testQuery() {
+    CommandResult cr = getShell().executeCommand(String.format("temp query --sql 'select * from %s'", tableName));
+    assertEquals(TempViewCommand.QUERY_SUCCESS, cr.getResult().toString());
+  }
+
+  @Test
+  public void testShowAll() {
+    CommandResult cr = getShell().executeCommand("temps show");
+    assertEquals(TempViewCommand.SHOW_SUCCESS, cr.getResult().toString());
+  }
+
+  @Test
+  public void testDelete() {
+    CommandResult cr = getShell().executeCommand(String.format("temp delete --view %s", tableName));
+    assertTrue(cr.getResult().toString().endsWith("successfully!"));
+
+    // after delete, we can not access table yet.
+    assertThrows(HoodieException.class, () -> HoodieCLI.getTempViewProvider().runQuery("select * from " + tableName));
+  }
+}

hudi-cli/src/test/java/org/apache/hudi/cli/testutils/AbstractShellBaseIntegrationTest.java

@@ -0,0 +1,70 @@
+/*
+ * 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.hudi.cli.testutils;
+
+import org.apache.hudi.testutils.HoodieClientTestHarness;
+
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.springframework.shell.Bootstrap;
+import org.springframework.shell.core.JLineShellComponent;
+
+/**
+ * Class to start Bootstrap and JLineShellComponent.
+ */
+public class AbstractShellBaseIntegrationTest extends HoodieClientTestHarness {
+
+  private static JLineShellComponent shell;
+
+  @BeforeAll
+  public static void startup() {
+    Bootstrap bootstrap = new Bootstrap();
+    shell = bootstrap.getJLineShellComponent();
+  }
+
+  @AfterAll
+  public static void shutdown() {
+    shell.stop();
+  }
+
+  @BeforeEach
+  public void setup() throws Exception {
+    initPath();
+  }
+
+  @AfterEach
+  public void teardown() throws Exception {
+    System.gc();
+  }
+
+  protected static JLineShellComponent getShell() {
+    return shell;
+  }
+
+  /**
+   * Helper to prepare string for matching.
+   * @param str Input string.
+   * @return pruned string with non word characters removed.
+   */
+  protected String removeNonWordAndStripSpace(String str) {
+    return str.replaceAll("[\\s]+", ",").replaceAll("[\\W]+", ",");
+  }
+}

hudi-cli/src/test/java/org/apache/hudi/cli/testutils/AbstractShellIntegrationTest.java

@@ -18,53 +18,23 @@
 
 package org.apache.hudi.cli.testutils;
 
-import org.apache.hudi.testutils.HoodieClientTestHarness;
-
-import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.AfterEach;
-import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.BeforeEach;
-import org.springframework.shell.Bootstrap;
-import org.springframework.shell.core.JLineShellComponent;
 
 /**
- * Class to start Bootstrap and JLineShellComponent.
+ * Class to initial resources for shell.
  */
-public abstract class AbstractShellIntegrationTest extends HoodieClientTestHarness {
-
-  private static JLineShellComponent shell;
-
-  @BeforeAll
-  public static void startup() {
-    Bootstrap bootstrap = new Bootstrap();
-    shell = bootstrap.getJLineShellComponent();
-  }
-
-  @AfterAll
-  public static void shutdown() {
-    shell.stop();
-  }
+public abstract class AbstractShellIntegrationTest extends AbstractShellBaseIntegrationTest {
 
+  @Override
   @BeforeEach
   public void setup() throws Exception {
     initResources();
   }
 
+  @Override
   @AfterEach
   public void teardown() throws Exception {
     cleanupResources();
   }
-
-  protected static JLineShellComponent getShell() {
-    return shell;
-  }
-
-  /**
-   * Helper to prepare string for matching.
-   * @param str Input string.
-   * @return pruned string with non word characters removed.
-   */
-  protected String removeNonWordAndStripSpace(String str) {
-    return str.replaceAll("[\\s]+", ",").replaceAll("[\\W]+", ",");
-  }
 }