Add Tests to DoiCleanup

src/test/java/org/jabref/logic/cleanup/DoiCleanupTest.java

@@ -0,0 +1,67 @@
+package org.jabref.logic.cleanup;
+
+import java.util.stream.Stream;
+
+import org.jabref.model.entry.BibEntry;
+import org.jabref.model.entry.field.StandardField;
+import org.jabref.model.entry.field.UnknownField;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class DoiCleanupTest {
+
+    @ParameterizedTest
+    @MethodSource("provideDoiForAllLowers")
+    public void testChangeDoi(BibEntry expected, BibEntry doiInfoField) {
+        DoiCleanup cleanUp = new DoiCleanup();
+        cleanUp.cleanup(doiInfoField);
+
+        assertEquals(expected, doiInfoField);
+    }
+
+    private static Stream<Arguments> provideDoiForAllLowers() {
+        UnknownField unknownField = new UnknownField("ee");
+        BibEntry doiResult = new BibEntry().withField(StandardField.DOI, "10.1145/2594455");
+
+        return Stream.of(
+                // cleanup for Doi field only
+                Arguments.of(doiResult, new BibEntry().withField(
+                        StandardField.URL, "https://doi.org/10.1145/2594455")),
+
+                // cleanup with Doi and URL to all entries
+                Arguments.of(doiResult, new BibEntry()
+                        .withField(StandardField.DOI, "10.1145/2594455")
+                        .withField(StandardField.URL, "https://doi.org/10.1145/2594455")
+                        .withField(StandardField.NOTE, "https://doi.org/10.1145/2594455")
+                        .withField(unknownField, "https://doi.org/10.1145/2594455")),
+
+                // cleanup with Doi and no URL to entries
+                Arguments.of(
+                        new BibEntry()
+                        .withField(StandardField.DOI, "10.1145/2594455")
+                        .withField(StandardField.NOTE, "This is a random note to this Doi")
+                        .withField(unknownField, "This is a random ee field for this Doi"),
+                        new BibEntry()
+                        .withField(StandardField.DOI, "10.1145/2594455")
+                        .withField(StandardField.NOTE, "This is a random note to this Doi")
+                        .withField(unknownField, "This is a random ee field for this Doi")),
+
+                // cleanup with spaced Doi
+                Arguments.of(doiResult, new BibEntry()
+                        .withField(StandardField.DOI, "10.1145 / 2594455")),
+
+                // cleanup just Note field with URL
+                Arguments.of(doiResult, new BibEntry()
+                        .withField(StandardField.NOTE, "https://doi.org/10.1145/2594455")),
+
+                // cleanup just ee field with URL
+                Arguments.of(doiResult, new BibEntry()
+                        .withField(unknownField, "https://doi.org/10.1145/2594455"))
+        );
+    }
+
+}