/*
* Copyright 2013 the original author or authors.
*
* Licensed 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.springframework.xd.shell.command;
import static org.hamcrest.Matchers.equalTo;
import static org.junit.Assert.assertThat;
import static org.springframework.xd.shell.command.fixtures.XDMatchers.eventually;
import static org.springframework.xd.shell.command.fixtures.XDMatchers.hasContentsThat;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.junit.Test;
import org.springframework.xd.test.fixtures.FileSink;
import org.springframework.xd.shell.command.fixtures.HttpSource;
/**
* Tests for custom PropertyAccessors in SpEL expressions within streams.
*
* @author Mark Fisher
*/
public class SpelPropertyAccessorIntegrationTests extends AbstractStreamIntegrationTest {
private static final Log logger = LogFactory.getLog(StreamCommandTests.class);
/**
* This test focuses on tuple access. Note that it explicitly creates a tuple out of Json, which is no longer
* required for end-user usecases (see {@link #testJsonPropertyAccessor()}).
*/
@Test
public void testTuplePropertyAccessor() throws Exception {
logger.info("Creating stream with temp File 'tupletest' as sink");
FileSink sink = newFileSink().binary(true);
HttpSource source = newHttpSource();
stream().create(
generateStreamName(),
"%s | json-to-tuple | transform --expression=payload.foo | %s",
source, sink);
source.ensureReady().postData("{\"foo\":\"bar\"}");
assertThat(sink, eventually(hasContentsThat(equalTo("bar"))));
}
/**
* This tests that we have Json property access out of the box.
*/
@Test
public void testJsonPropertyAccessor() throws Exception {
FileSink sink = newFileSink().binary(true);
HttpSource source = newHttpSource();
stream().create(
generateStreamName(),
"%s | transform --expression=payload.foo.toString() | %s",
source, sink);
source.ensureReady().postData("{\"foo\":\"bar\"}");
assertThat(sink, eventually(hasContentsThat(equalTo("bar"))));
}
@Test
public void testTuplePropertyAccessorProjection() throws Exception {
FileSink sink = newFileSink().binary(true);
HttpSource source = newHttpSource();
stream().create(
generateStreamName(),
"%s | json-to-tuple | transform --expression=payload.entities.hashtags.![text].toString() | %s",
source, sink);
String tweet = "{\"created_at\":\"Tue Aug 27 18:17:06 +0000 2013\",\"id\":100000,\"text\":\"whocares\",\"retweet_count\":0,"
+
"\"entities\":{\"hashtags\":[{\"text\":\"hello\",\"indices\":[23,41]},{\"text\":\"there\",\"indices\":[45,50]}],\"symbols\":[],"
+
"\"urls\":[],\"user_mentions\":[]},"
+
"\"favorited\":false,\"retweeted\":false,\"possibly_sensitive\":false,\"filter_level\":\"medium\",\"lang\":\"bg\"}";
source.ensureReady().postData(tweet);
assertThat(sink, eventually(hasContentsThat(equalTo("[hello, there]"))));
}
}