initial tests for issue JabRef#6189

src/test/java/org/jabref/gui/fieldeditors/JournayEditorPopOverTest.java

@@ -0,0 +1,63 @@
+package org.jabref.gui.fieldeditors;
+
+import java.io.File;
+import java.nio.file.Path;
+import java.util.Optional;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class JournalEditorPopOverTest {
+
+    private Path tempFolder;
+
+    @BeforeEach
+    void setUp(@TempDir Path tempFolder) throws Exception {
+        this.tempFolder = tempFolder; // Set up the temp folder
+        // 1) Create Journal Object
+
+        // Test entry
+        // 6, 58530, National vital statistics reports : from the Centers for Disease Control and Prevention,
+        // National Center for Health Statistics, National Vital Statistics System,	book series,	15518922, 15518930
+        // 29,810,	Q1,	95,	14,	30,	379, 1059, 30, 41,61, 27,07, United States, Northern America
+        // Public Health Services, US Dept of Health and Human Services	1998-2020	Life-span and Life-course Studies (Q1)
+    }
+
+    @Test
+    void testValidISSN() {
+        // Check if valid ISSN returns something
+        Path file = tempFolder.resolve("<Filename>.json"); // Load in the file
+        // Call method with valid ISSN
+//        String expectedJournalName = journalObject.getJournalNameByISSN(file, 15518922);
+        String expectedJournalName = "Hello";
+        String trueJournalName = "National vital statistics reports : from the Centers for Disease Control and Prevention, " +
+                "National Center for Health Statistics, National Vital Statistics System";
+
+        assertEquals(trueJournalName, expectedJournalName);
+    }
+
+    @Test
+    void testInvalidISSN() {
+        // Check if invalid ISSN returns something
+        Path file = tempFolder.resolve("<Filename>.json"); // Load in the file
+        // Call method with valid ISSN
+//        String expectedJournalName = journalObject.getJournalNameByISSN(file, 15518922); // Should return null or something
+        String expectedJournalName = null;
+        String trueJournalName = null; // Or empty String
+
+        assertEquals(expectedJournalName, trueJournalName);
+    }
+
+    @Test
+    void testReadInput() {
+        Path expectedFile = tempFolder.resolve("test.json"); // Load in the file
+        Optional<String> file = journalObject.getFileByISSN(); // .... Load in the file
+
+        // If file is not found
+        assertTrue(file.isPresent()); // File is present
+    }
+}