author | prappo |
Tue, 02 Jul 2019 13:25:51 +0100 | |
changeset 55546 | 3ae57bbf9585 |
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/* |
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* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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|
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/* |
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* @test |
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* @bug 8226602 |
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* @summary Tests convenience reactive primitives with RS TCK |
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* |
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* @library ../reactivestreams-tck |
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* @build S |
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* |
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* @compile -encoding UTF-8 SPublisherOfStream.java |
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* |
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* @compile -encoding UTF-8 BodyPublishersFromPublisher.java |
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* @compile -encoding UTF-8 BodyPublishersNoBody.java |
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* @compile -encoding UTF-8 BodyPublishersOfByteArray.java |
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* @compile -encoding UTF-8 BodyPublishersOfByteArrays.java |
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* @compile -encoding UTF-8 BodyPublishersOfFile.java |
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* @compile -encoding UTF-8 BodyPublishersOfInputStream.java |
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* @compile -encoding UTF-8 BodyPublishersOfSubByteArray.java |
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* |
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* @compile -encoding UTF-8 BodySubscribersBuffering.java |
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* @compile -encoding UTF-8 BodySubscribersDiscarding.java |
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* @compile -encoding UTF-8 BodySubscribersFromLineSubscriber.java |
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* @compile -encoding UTF-8 BodySubscribersFromSubscriber.java |
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* @compile -encoding UTF-8 BodySubscribersMapping.java |
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* @compile -encoding UTF-8 BodySubscribersOfByteArray.java |
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* @compile -encoding UTF-8 BodySubscribersOfByteArrayConsumer.java |
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* @compile -encoding UTF-8 BodySubscribersOfFile.java |
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* @compile -encoding UTF-8 BodySubscribersOfInputStream.java |
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* @compile -encoding UTF-8 BodySubscribersOfLines.java |
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* @compile -encoding UTF-8 BodySubscribersOfPublisher.java |
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* @compile -encoding UTF-8 BodySubscribersOfPublisher1.java |
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* @compile -encoding UTF-8 BodySubscribersOfPublisherPublisher.java |
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* @compile -encoding UTF-8 BodySubscribersOfString.java |
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* @compile -encoding UTF-8 BodySubscribersReplacing.java |
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* |
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* @run testng/othervm STest |
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* @run testng/othervm SPublisherOfStream |
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* |
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* @run testng/othervm BodyPublishersFromPublisher |
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* @run testng/othervm BodyPublishersNoBody |
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* @run testng/othervm BodyPublishersOfByteArray |
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* @run testng/othervm BodyPublishersOfByteArrays |
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* @run testng/othervm BodyPublishersOfFile |
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* @run testng/othervm BodyPublishersOfInputStream |
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* @run testng/othervm BodyPublishersOfSubByteArray |
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* |
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* @run testng/othervm BodySubscribersBuffering |
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* @run testng/othervm BodySubscribersDiscarding |
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* @run testng/othervm BodySubscribersFromLineSubscriber |
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* @run testng/othervm BodySubscribersFromSubscriber |
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* @run testng/othervm BodySubscribersMapping |
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* @run testng/othervm BodySubscribersOfByteArray |
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* @run testng/othervm BodySubscribersOfByteArrayConsumer |
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* @run testng/othervm BodySubscribersOfFile |
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* @run testng/othervm BodySubscribersOfInputStream |
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* @run testng/othervm BodySubscribersOfLines |
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* @run testng/othervm BodySubscribersOfPublisher |
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* @run testng/othervm BodySubscribersOfPublisher1 |
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* @run testng/othervm BodySubscribersOfPublisherPublisher |
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* @run testng/othervm BodySubscribersOfString |
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* @run testng/othervm BodySubscribersReplacing |
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* |
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* @key randomness |
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*/ |
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public class TckDriver { |
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/* |
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#### General Information |
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|
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1. This JTREG test aggregates multiple TestNG tests. This is because |
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these tests share a common library (reactivestreams-tck), and we don't |
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want this library to be compiled separately for each of those tests. |
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|
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2. Tests that use RS TCK are compiled with the UTF-8 encoding. This is |
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performed for the sake of reactivestreams-tck. We don't want to patch |
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the TCK because of the extra merging work in the future, should we bring |
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update(s) from the RS repo. |
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|
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#### Tests |
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|
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1. The purpose of each test should be easily digestible. The name of the |
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test is derived from the very entity the test exercises. For example, |
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|
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the BodyPublishersOfFile test exercises the BodyPublisher obtained |
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by calling BodyPublishers.ofFile(Path) |
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|
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the BodySubscribersOfFile test exercises the BodySubscriber obtained |
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by calling BodySubscribers.ofFile(Path) |
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|
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2. RS TCK requires PublisherVerification tests to produce publishers |
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capable of emitting a certain number of elements. In order to achieve |
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this, we use some knowledge of the internal workings of our publishers. |
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An example would be a chunk size a publisher uses to deliver a portion |
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of data. Without knowing that it is not possible to guarantee that the |
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publisher will emit a particular number of elements. |
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|
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3. Typically our publishers cannot be created in a known failed state. |
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In this case the corresponding `createFailedFlowPublisher` method |
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returns `null`. |
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|
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4. SubscriberBlackBoxVerification uses the `createElement(int element)` |
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method. Our implementations usually cap the amount of data created by |
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this method, because it's not known beforehand how big the `element` |
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value is. Hence, sometimes there's code like as follows: |
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|
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@Override |
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public List<ByteBuffer> createElement(int element) { |
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return scatterBuffer( |
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bufferOfNRandomASCIIBytes(element % 17)); |
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^ |
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} |
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|
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5. The amount of testing RS TCK performs on a publisher seems to depend |
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on the number of elements this publisher reports it can emit. Sometimes |
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a code like the following can be seen in the tests: |
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|
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@Override public long maxElementsFromPublisher() { |
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return 21; |
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~~~~~~~~~~~^ |
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} |
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|
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This magic number is a result of trial and error and seems to unlock |
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most of the tests. Reporting big values (e.g. Long.MAX_VALUE - 1) is |
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not an option for most of our publishers because they require to have |
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all the elements upfront. |
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|
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6. It doesn't seem currently feasible to provide SubscriberWhiteboxVerification |
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tests as a) it's not clear how much better the coverage is and b) it's |
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significantly harder to code that. |
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|
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#### S (Support) |
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|
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Support utilities are being tested (STest) too. |
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*/ |
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} |