Watcher: Fold two smoke test projects into smoke-test-watcher (#30137)

In order to have less qa/ projects, this commit removes the
watcher-smoke-test-mustache and the watcher-smoke-test-painless projects
and moves the tests of both into the watcher-smoke-test projects.

This results in less projects to parse when calling gradle and a shorter test
time due to being able to run everything within one elasticsearch
instance.

x-pack/qa/smoke-test-watcher/build.gradle

@@ -9,6 +9,8 @@ apply plugin: 'elasticsearch.rest-test'
 dependencies {
   testCompile project(path: xpackModule('core'), configuration: 'runtime')
   testCompile project(path: xpackModule('watcher'), configuration: 'runtime')
+  testCompile project(path: ':modules:lang-mustache', configuration: 'runtime')
+  testCompile project(path: ':modules:lang-painless', configuration: 'runtime')
 }
 
 integTestCluster {

x-pack/qa/smoke-test-watcher/src/test/java/org/elasticsearch/smoketest/WatcherRestIT.java

@@ -0,0 +1,95 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+package org.elasticsearch.smoketest;
+
+import com.carrotsearch.randomizedtesting.annotations.Name;
+import com.carrotsearch.randomizedtesting.annotations.ParametersFactory;
+import org.elasticsearch.test.rest.yaml.ClientYamlTestCandidate;
+import org.elasticsearch.test.rest.yaml.ClientYamlTestResponse;
+import org.elasticsearch.test.rest.yaml.ESClientYamlSuiteTestCase;
+import org.elasticsearch.xpack.core.watcher.support.WatcherIndexTemplateRegistryField;
+import org.junit.After;
+import org.junit.Before;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.emptyMap;
+import static java.util.Collections.singletonMap;
+import static org.hamcrest.Matchers.is;
+
+/** Runs rest tests against external cluster */
+public class WatcherRestIT extends ESClientYamlSuiteTestCase {
+
+    public WatcherRestIT(@Name("yaml") ClientYamlTestCandidate testCandidate) {
+        super(testCandidate);
+    }
+
+    @ParametersFactory
+    public static Iterable<Object[]> parameters() throws Exception {
+        return ESClientYamlSuiteTestCase.createParameters();
+    }
+
+    @Before
+    public void startWatcher() throws Exception {
+        assertBusy(() -> {
+            ClientYamlTestResponse response =
+                getAdminExecutionContext().callApi("xpack.watcher.stats", emptyMap(), emptyList(), emptyMap());
+            String state = (String) response.evaluate("stats.0.watcher_state");
+
+            switch (state) {
+                case "stopped":
+                    ClientYamlTestResponse startResponse =
+                        getAdminExecutionContext().callApi("xpack.watcher.start", emptyMap(), emptyList(), emptyMap());
+                    boolean isAcknowledged = (boolean) startResponse.evaluate("acknowledged");
+                    assertThat(isAcknowledged, is(true));
+                    break;
+                case "stopping":
+                    throw new AssertionError("waiting until stopping state reached stopped state to start again");
+                case "starting":
+                    throw new AssertionError("waiting until starting state reached started state");
+                case "started":
+                    // all good here, we are done
+                    break;
+                default:
+                    throw new AssertionError("unknown state[" + state + "]");
+            }
+        });
+
+        assertBusy(() -> {
+            for (String template : WatcherIndexTemplateRegistryField.TEMPLATE_NAMES) {
+                ClientYamlTestResponse templateExistsResponse = getAdminExecutionContext().callApi("indices.exists_template",
+                    singletonMap("name", template), emptyList(), emptyMap());
+                assertThat(templateExistsResponse.getStatusCode(), is(200));
+            }
+        });
+    }
+
+    @After
+    public void stopWatcher() throws Exception {
+        assertBusy(() -> {
+            ClientYamlTestResponse response =
+                getAdminExecutionContext().callApi("xpack.watcher.stats", emptyMap(), emptyList(), emptyMap());
+            String state = (String) response.evaluate("stats.0.watcher_state");
+
+            switch (state) {
+                case "stopped":
+                    // all good here, we are done
+                    break;
+                case "stopping":
+                    throw new AssertionError("waiting until stopping state reached stopped state");
+                case "starting":
+                    throw new AssertionError("waiting until starting state reached started state to stop");
+                case "started":
+                    ClientYamlTestResponse stopResponse =
+                        getAdminExecutionContext().callApi("xpack.watcher.stop", emptyMap(), emptyList(), emptyMap());
+                    boolean isAcknowledged = (boolean) stopResponse.evaluate("acknowledged");
+                    assertThat(isAcknowledged, is(true));
+                    break;
+                default:
+                    throw new AssertionError("unknown state[" + state + "]");
+            }
+        });
+    }
+}

x-pack/qa/smoke-test-watcher-with-mustache/src/test/java/org/elasticsearch/smoketest/WatcherTemplateTests.java → x-pack/qa/smoke-test-watcher/src/test/java/org/elasticsearch/smoketest/WatcherTemplateIT.java

@@ -30,7 +30,7 @@
 import static org.hamcrest.Matchers.equalTo;
 import static org.hamcrest.Matchers.notNullValue;
 
-public class WatcherTemplateTests extends ESTestCase {
+public class WatcherTemplateIT extends ESTestCase {
 
     private TextTemplateEngine textTemplateEngine;