Migrate cron eval bats test to java (#50940) (#51007)

This commit migrates the simple test of the cron eval tool from bats to
java packaging tests.

relates #46005

buildSrc/src/main/java/org/elasticsearch/gradle/test/DistroTestPlugin.java

@@ -114,7 +114,6 @@ public void apply(Project project) {
         }
         Map<String, TaskProvider<?>> batsTests = new HashMap<>();
         batsTests.put("bats oss", configureBatsTest(project, "oss", distributionsDir, copyDistributionsTask));
-        batsTests.put("bats default", configureBatsTest(project, "default", distributionsDir, copyDistributionsTask));
         configureBatsTest(project, "plugins", distributionsDir, copyDistributionsTask, copyPluginsTask).configure(
             t -> t.setPluginsDir(pluginsDir)
         );

qa/os/build.gradle

@@ -58,7 +58,7 @@ tasks.dependenciesInfo.enabled = false
 tasks.thirdPartyAudit.ignoreMissingClasses()
 
 tasks.register('destructivePackagingTest') {
-  dependsOn 'destructiveDistroTest', 'destructiveBatsTest.oss', 'destructiveBatsTest.default'
+  dependsOn 'destructiveDistroTest', 'destructiveBatsTest.oss'
 }
 
 processTestResources {

qa/os/src/test/java/org/elasticsearch/packaging/test/CronEvalCliTests.java

@@ -0,0 +1,50 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch 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.elasticsearch.packaging.test;
+
+import org.elasticsearch.packaging.util.Distribution;
+import org.elasticsearch.packaging.util.Shell;
+import org.junit.Before;
+
+import static org.hamcrest.CoreMatchers.containsString;
+import static org.junit.Assume.assumeTrue;
+
+public class CronEvalCliTests extends PackagingTestCase {
+
+    @Before
+    public void filterDistros() {
+        assumeTrue("only default distro", distribution.flavor == Distribution.Flavor.DEFAULT);
+        assumeTrue("no docker", distribution.packaging != Distribution.Packaging.DOCKER);
+    }
+
+    public void test10Install() throws Exception {
+        install();
+    }
+
+    public void test20Help() throws Exception {
+        Shell.Result result = installation.executables().cronevalTool.run("--help");
+        assertThat(result.stdout, containsString("Validates and evaluates a cron expression"));
+    }
+
+    public void test30Run() throws Exception {
+        Shell.Result result = installation.executables().cronevalTool.run("'0 0 20 ? * MON-THU' -c 2");
+        assertThat(result.stdout, containsString("Valid!"));
+    }
+}

qa/os/src/test/java/org/elasticsearch/packaging/util/Installation.java

@@ -177,6 +177,7 @@ public class Executables {
         public final Executable keystoreTool = new Executable("elasticsearch-keystore");
         public final Executable certutilTool = new Executable("elasticsearch-certutil");
         public final Executable certgenTool = new Executable("elasticsearch-certgen");
+        public final Executable cronevalTool = new Executable("elasticsearch-croneval");
         public final Executable shardTool = new Executable("elasticsearch-shard");
         public final Executable nodeTool = new Executable("elasticsearch-node");
         public final Executable setupPasswordsTool = new Executable("elasticsearch-setup-passwords");

x-pack/plugin/watcher/src/main/java/org/elasticsearch/xpack/watcher/trigger/schedule/tool/CronEvalTool.java

@@ -56,7 +56,7 @@ protected void execute(Terminal terminal, OptionSet options) throws Exception {
         int count = countOption.value(options);
         List<String> args = arguments.values(options);
         if (args.size() != 1) {
-            throw new UserException(ExitCodes.USAGE, "expecting a single argument that is the cron expression to evaluate");
+            throw new UserException(ExitCodes.USAGE, "expecting a single argument that is the cron expression to evaluate, got " + args);
         }
         boolean printDetail = options.has(detailOption);
         execute(terminal, args.get(0), count, printDetail);