Github user ahgittin commented on a diff in the pull request:

    https://github.com/apache/brooklyn-server/pull/462#discussion_r90568817
  
    --- Diff: 
core/src/test/java/org/apache/brooklyn/core/mgmt/rebind/RebindConfigInheritanceTest.java
 ---
    @@ -0,0 +1,145 @@
    +/*
    + * Licensed to the Apache Software Foundation (ASF) under one
    + * or more contributor license agreements.  See the NOTICE file
    + * distributed with this work for additional information
    + * regarding copyright ownership.  The ASF 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.apache.brooklyn.core.mgmt.rebind;
    +
    +import java.io.File;
    +import java.io.FileReader;
    +
    +import org.apache.brooklyn.api.entity.Application;
    +import org.apache.brooklyn.api.entity.EntitySpec;
    +import org.apache.brooklyn.config.ConfigInheritance;
    +import org.apache.brooklyn.config.ConfigKey;
    +import org.apache.brooklyn.core.config.BasicConfigInheritance;
    +import org.apache.brooklyn.core.config.ConfigKeys;
    +import org.apache.brooklyn.core.config.ConfigKeys.InheritanceContext;
    +import org.apache.brooklyn.core.config.ConfigPredicates;
    +import org.apache.brooklyn.core.entity.EntityAsserts;
    +import org.apache.brooklyn.core.test.entity.TestEntity;
    +import org.apache.brooklyn.test.Asserts;
    +import org.apache.brooklyn.util.os.Os;
    +import org.apache.brooklyn.util.stream.Streams;
    +import org.slf4j.Logger;
    +import org.slf4j.LoggerFactory;
    +import org.testng.Assert;
    +import org.testng.annotations.BeforeMethod;
    +import org.testng.annotations.Test;
    +
    +import com.google.common.base.Charsets;
    +import com.google.common.base.Joiner;
    +import com.google.common.collect.Iterables;
    +import com.google.common.io.Files;
    +
    +public class RebindConfigInheritanceTest extends RebindTestFixtureWithApp {
    +
    +    private static final Logger log = 
LoggerFactory.getLogger(RebindConfigInheritanceTest.class);
    +
    +    ConfigKey<String> key1 = ConfigKeys.builder(String.class, 
"key1").runtimeInheritance(BasicConfigInheritance.NEVER_INHERITED).build();
    +    String origMemento, newMemento;
    +    Application rebindedApp;
    +    
    +    @Override
    +    @BeforeMethod(alwaysRun=true)
    +    public void setUp() throws Exception {
    +        super.setUp();
    +    }
    +        
    +    protected void doReadConfigInheritance(String label, String entityId) 
throws Exception {
    +        String mementoFilename = "config-inheritance-"+label+"-"+entityId;
    +        origMemento = 
Streams.readFullyString(getClass().getResourceAsStream(mementoFilename));
    +        
    +        File persistedEntityFile = new File(mementoDir, 
Os.mergePaths("entities", entityId));
    +        Files.write(origMemento.getBytes(), persistedEntityFile);
    +        
    +        // we'll make assertions on what we've loaded
    +        rebind();
    +        rebindedApp = (Application) newManagementContext.lookup(entityId);
    +        
    +        // we'll also make assertions on the contents written out
    +        RebindTestUtils.waitForPersisted(mgmt());
    +        newMemento = 
Joiner.on("\n").join(Files.readLines(persistedEntityFile, Charsets.UTF_8));
    +    }
    +    
    +    /** also see {@link RebindWithDeserializingClassRenamesTest} */
    +    @Test
    +    public void testPreBasicConfigInheritance_2016_07() throws Exception {
    +        doReadConfigInheritance("prebasic-2016-07", "toruf2wxg4");
    +        
    +        ConfigKey<?> k = Iterables.getOnlyElement( 
rebindedApp.config().findKeys(ConfigPredicates.nameEqualTo("my.config.inheritanceMerged"))
 );
    +        
    +        Asserts.assertStringContains(origMemento, "<parentInheritance 
class=\"org.apache.brooklyn.config.ConfigInheritance$Merged\"/>");
    +        Asserts.assertStringDoesNotContain(origMemento, 
BasicConfigInheritance.DEEP_MERGE.getClass().getName());
    +
    +        // should now convert it to BasicConfigInheritance.DEEP_MERGE
    +        Asserts.assertStringDoesNotContain(newMemento, 
"ConfigInheritance$Merged");
    +        Asserts.assertStringDoesNotContain(newMemento, 
"ConfigInheritance$Legacy$Merged");
    +        Asserts.assertStringContains(newMemento, 
BasicConfigInheritance.DEEP_MERGE.getClass().getName());
    +        
    +        ConfigInheritance inh = 
k.getInheritanceByContext(InheritanceContext.RUNTIME_MANAGEMENT);
    +        Assert.assertEquals(inh, BasicConfigInheritance.DEEP_MERGE);
    +    }
    +    
    +    @Test
    +    public void testBasicConfigInheritance_2016_10() throws Exception {
    +        doReadConfigInheritance("basic-2016-10", "wj5s8u9h73");
    +
    +        checkNewAppNonInheritingKey1(rebindedApp);
    +        
    +        Asserts.assertStringContains(origMemento, "isReinherited");
    +        Asserts.assertStringDoesNotContain(origMemento, "NEVER_INHERITED");
    +        Asserts.assertStringDoesNotContain(origMemento, "NeverInherited");
    +        
    +        // should write it out as NeverInherited
    +        Asserts.assertStringDoesNotContain(newMemento, "isReinherited");
    +        Asserts.assertStringContains(newMemento, "NeverInherited");
    +    }
    +
    +    @Test
    +    public void testReadConfigInheritance_2016_11() throws Exception {
    +        doReadConfigInheritance("basic-2016-11", "kmpez5fznt");
    +        checkNewAppNonInheritingKey1(rebindedApp);
    +        
    +        String origMementoWithoutLicenseHeader = 
origMemento.substring(origMemento.indexOf("<entity>"));
    +        Asserts.assertEquals(origMementoWithoutLicenseHeader, newMemento);
    +    }
    +    
    +    @Test
    +    public void testBasicConfigInheritanceProgrammatic() throws Exception {
    +        origApp.config().set(key1, "1");
    +        
    +        RebindOptions opts = RebindOptions.create();
    +        opts.keepSameInstance = true;
    +        
    +        rebind(opts);
    +        
    +        String entityFile = Streams.readFully(new FileReader(new 
File(opts.mementoDir, "entities/"+origApp.getApplicationId())));
    --- End diff --
    
    d'oh.  thought it was awfully hard to find that!  agree, will remove 
keepSameInstance.


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