fixes case-projector post-processor: the configuration is not read in…

… the constructor, anymore (to avoid problems with powsybl-core/ImportersServiceLoader.loadPostProcessors(), when a 'case-projector' section doesn't exist in the configuration)

case-projector/src/main/java/eu/itesla_project/case_projector/CaseProjectorPostProcessor.java

@@ -8,8 +8,9 @@
 package eu.itesla_project.case_projector;
 
 import com.google.auto.service.AutoService;
+import com.google.common.base.Supplier;
+import com.google.common.base.Suppliers;
 import com.powsybl.commons.config.ComponentDefaultConfig;
-import com.powsybl.commons.config.PlatformConfig;
 import com.powsybl.computation.ComputationManager;
 import com.powsybl.iidm.import_.ImportPostProcessor;
 import com.powsybl.iidm.network.Network;
@@ -33,18 +34,11 @@ public class CaseProjectorPostProcessor implements ImportPostProcessor {
 
     public static final String NAME = "case-proj";
 
-    private final LoadFlowFactory loadFlowFactory;
+    private final Supplier<CaseProjectorConfig> caseProjectorConfigSupplier = Suppliers.memoize(CaseProjectorConfig::load);
 
-    private final CaseProjectorConfig config;
+    private final Supplier<ComponentDefaultConfig> defaultConfigSupplier = Suppliers.memoize(ComponentDefaultConfig::load);
 
     public CaseProjectorPostProcessor() {
-        this(PlatformConfig.defaultConfig());
-    }
-
-    public CaseProjectorPostProcessor(PlatformConfig platformConfig) {
-        ComponentDefaultConfig defaultConfig = ComponentDefaultConfig.load();
-        loadFlowFactory = defaultConfig.newFactoryImpl(LoadFlowFactory.class);
-        config = CaseProjectorConfig.load();
     }
 
     @Override
@@ -54,8 +48,9 @@ public String getName() {
 
     @Override
     public void process(Network network, ComputationManager computationManager) throws Exception {
+        LoadFlowFactory loadFlowFactory = defaultConfigSupplier.get().newFactoryImpl(LoadFlowFactory.class);
         LoadFlow loadFlow = loadFlowFactory.create(network, computationManager, 0);
-        CaseProjectorUtils.project(computationManager, network, loadFlow, network.getStateManager().getWorkingStateId(), config).join();
+        CaseProjectorUtils.project(computationManager, network, loadFlow, network.getStateManager().getWorkingStateId(), caseProjectorConfigSupplier.get()).join();
     }
 
 }

case-projector/src/test/java/eu/itesla_project/case_projector/CaseProjectorPostProcessorTest.java

@@ -0,0 +1,46 @@
+/**
+ * Copyright (c) 2018, RTE (http://www.rte-france.com)
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+package eu.itesla_project.case_projector;
+
+import com.google.common.jimfs.Configuration;
+import com.google.common.jimfs.Jimfs;
+import com.powsybl.commons.config.InMemoryPlatformConfig;
+import com.powsybl.commons.config.PlatformConfig;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.nio.file.FileSystem;
+
+public class CaseProjectorPostProcessorTest {
+
+    private FileSystem fileSystem;
+    private PlatformConfig platformConfig;
+
+    private PlatformConfig createEmptyPlatformConfig() {
+        fileSystem = Jimfs.newFileSystem(Configuration.unix());
+        platformConfig = new InMemoryPlatformConfig(fileSystem);
+        return platformConfig;
+    }
+
+    @Before
+    public void setUp() throws Exception {
+        fileSystem = Jimfs.newFileSystem(Configuration.unix());
+        platformConfig = createEmptyPlatformConfig();
+    }
+
+    @After
+    public void tearDown() throws Exception {
+        fileSystem.close();
+    }
+
+    @Test
+    public void testInstCaseProjectorPostProcessor() throws Exception {
+        //when there is no case-projector section, in the configuration, this constructor should not throw any exception
+        CaseProjectorPostProcessor postProcessor = new CaseProjectorPostProcessor();
+    }
+}