Separated 3WT unit tests (#79)

Signed-off-by: Florian Dupuy <florian.dupuy@rte-france.com>

src/test/java/com/powsybl/nad/svg/ThreeWindingTransformerTest.java

@@ -0,0 +1,67 @@
+/**
+ * Copyright (c) 2021, 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 com.powsybl.nad.svg;
+
+import com.powsybl.iidm.network.Network;
+import com.powsybl.iidm.network.ThreeWindingsTransformer;
+import com.powsybl.iidm.network.test.ThreeWindingsTransformerNetworkFactory;
+import com.powsybl.nad.AbstractTest;
+import com.powsybl.nad.build.iidm.VoltageLevelFilter;
+import com.powsybl.nad.layout.LayoutParameters;
+import com.powsybl.nad.svg.iidm.DefaultLabelProvider;
+import com.powsybl.nad.svg.iidm.NominalVoltageStyleProvider;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.util.Collections;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+/**
+ * @author Florian Dupuy <florian.dupuy at rte-france.com>
+ */
+class ThreeWindingTransformerTest extends AbstractTest {
+
+    @BeforeEach
+    public void setup() {
+        setLayoutParameters(new LayoutParameters());
+        setSvgParameters(new SvgParameters()
+                .setInsertNameDesc(true)
+                .setSvgWidthAndHeightAdded(true)
+                .setFixedWidth(800));
+    }
+
+    @Override
+    protected StyleProvider getStyleProvider(Network network) {
+        return new NominalVoltageStyleProvider(network);
+    }
+
+    @Override
+    protected LabelProvider getLabelProvider(Network network) {
+        return new DefaultLabelProvider(network);
+    }
+
+    @Test
+    void test3wt() {
+        Network network = ThreeWindingsTransformerNetworkFactory.create();
+        assertEquals(toString("/3wt.svg"), generateSvgString(network, "/3wt.svg"));
+    }
+
+    @Test
+    void testDisconnected3wt() {
+        Network network = ThreeWindingsTransformerNetworkFactory.create();
+        network.getThreeWindingsTransformer("3WT").getTerminal(ThreeWindingsTransformer.Side.TWO).disconnect();
+        assertEquals(toString("/3wt_disconnected.svg"), generateSvgString(network, "/3wt_disconnected.svg"));
+    }
+
+    @Test
+    void testPartial3wt() {
+        Network network = ThreeWindingsTransformerNetworkFactory.create();
+        VoltageLevelFilter filter = VoltageLevelFilter.createVoltageLevelsFilter(network, Collections.singletonList("VL_11"));
+        assertEquals(toString("/3wt_partial.svg"), generateSvgString(network, filter, "/3wt_partial.svg"));
+    }
+}