Remove unused ResourceBundle reports files, keep reports_en.properties to fallback on en locale for tests

Signed-off-by: CARON Alice <[email protected]>

Author: alicecaron

src/main/resources/com/powsybl/openloadflow/reports_fr.properties

@@ -0,0 +1,40 @@
+/**
+ * Copyright (c) 2024, 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/.
+ * SPDX-License-Identifier: MPL-2.0
+ */
+package com.powsybl.openloadflow.util;
+
+import com.powsybl.commons.report.ReportNode;
+import com.powsybl.commons.test.PowsyblCoreTestReportResourceBundle;
+import org.junit.jupiter.api.Test;
+import java.util.Locale;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+/**
+ * @author Alice Caron {@literal <alice.caron at rte-france.com>}
+ */
+class ReportsTest {
+
+    @Test
+    void useReportWithFranceLocaleTest() {
+        ReportNode reportNode = ReportNode.newRootReportNode()
+                .withLocale(Locale.FRANCE)
+                .withResourceBundles(PowsyblCoreTestReportResourceBundle.TEST_BASE_NAME)
+                .withMessageTemplate("testReport")
+                .build();
+        assertEquals("Rapport de test en français", reportNode.getMessage());
+    }
+
+    @Test
+    void useReportWithJVMLocaleTest() {
+        ReportNode reportNode = ReportNode.newRootReportNode()
+                .withLocale(Locale.ENGLISH)
+                .withResourceBundles(PowsyblCoreTestReportResourceBundle.TEST_BASE_NAME)
+                .withMessageTemplate("testReport")
+                .build();
+        assertEquals("Test Report", reportNode.getMessage());
+    }
+}

src/main/resources/com/powsybl/openloadflow/reports_fr_FR.properties

@@ -0,0 +1 @@
+testReport = Rapport de test en français