add test for ProcessorsRegistry

core/src/test/java/org/elasticsearch/ingest/ProcessorsRegistryTests.java

@@ -0,0 +1,57 @@
+/*
+ * 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.ingest;
+
+import org.elasticsearch.test.ESTestCase;
+
+import java.util.Map;
+import java.util.Set;
+
+import static org.hamcrest.CoreMatchers.equalTo;
+
+public class ProcessorsRegistryTests extends ESTestCase {
+
+    public void testAddProcessor() {
+        ProcessorsRegistry processorsRegistry = new ProcessorsRegistry();
+        TestProcessor.Factory factory1 = new TestProcessor.Factory();
+        processorsRegistry.addProcessor("1", (environment, templateService) -> factory1);
+        TestProcessor.Factory factory2 = new TestProcessor.Factory();
+        processorsRegistry.addProcessor("2", (environment, templateService) -> factory2);
+        TestProcessor.Factory factory3 = new TestProcessor.Factory();
+        try {
+            processorsRegistry.addProcessor("1", (environment, templateService) -> factory3);
+            fail("addProcessor should have failed");
+        } catch(IllegalArgumentException e) {
+            assertThat(e.getMessage(), equalTo("Processor factory already registered for name [1]"));
+        }
+
+        Set<Map.Entry<String, ProcessorFactoryProvider>> entrySet = processorsRegistry.entrySet();
+        assertThat(entrySet.size(), equalTo(2));
+        for (Map.Entry<String, ProcessorFactoryProvider> entry : entrySet) {
+            if (entry.getKey().equals("1")) {
+                assertThat(entry.getValue().apply(null, null), equalTo(factory1));
+            } else if (entry.getKey().equals("2")) {
+                assertThat(entry.getValue().apply(null, null), equalTo(factory2));
+            } else {
+                fail("unexpected processor id [" + entry.getKey() + "]");
+            }
+        }
+    }
+}