2 files changed, 39 insertions, 0 deletions
diff --git a/src/test/java/sevenUnitsGUI/I18nTest.java b/src/test/java/sevenUnitsGUI/I18nTest.java
new file mode 100644
index 0000000..73bd727
--- /dev/null
+++ b/src/test/java/sevenUnitsGUI/I18nTest.java
@@ -0,0 +1,21 @@
+package sevenUnitsGUI;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+import org.junit.jupiter.api.Test;
+
+class I18nTest {
+
+	/**
+	 * Tests that the default locale exists.
+	 * 
+	 * Currently this test fails.
+	 */
+	@Test
+	void testDefaultLocale() {
+		Presenter p = new Presenter(new ViewBot());
+		assertNotNull(p.locales.get(Presenter.DEFAULT_LOCALE),
+				"Default locale does not exist.");
+	}
+
+}
diff --git a/src/test/java/sevenUnitsGUI/PresenterTest.java b/src/test/java/sevenUnitsGUI/PresenterTest.java
index 9e25a08..8b16365 100644
--- a/src/test/java/sevenUnitsGUI/PresenterTest.java
+++ b/src/test/java/sevenUnitsGUI/PresenterTest.java
@@ -17,6 +17,7 @@
 package sevenUnitsGUI;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 import static org.junit.jupiter.api.Assumptions.assumeTrue;
 
@@ -154,6 +155,23 @@ public final class PresenterTest {
 				expectedOutput.getValue().toString(false, RoundingMode.HALF_EVEN));
 		assertEquals(List.of(expectedUC), viewBot.unitConversionList());
 	}
+	
+	/**
+	 * Ensures that the default unitfile can be disabled.
+	 * 
+	 * @since v1.0.0
+	 * @since 2025-02-23
+	 */
+	@Test
+	void testDisableDefault() {
+		final var viewBot = new ViewBot();
+		final var presenter = new Presenter(viewBot);
+		assumeTrue(presenter.database.containsUnitName("joule"),
+				"Attempted to test disabling default on unit not in default file.");
+		presenter.setUseDefaultDatafiles(false);
+		assertFalse(presenter.database.containsUnitName("joule"),
+				"Presenter disabled default datafiles, but still contains the joule.");
+	}
 
 	/**
 	 * Tests that duplicate units are successfully removed, if that is asked for