Added some tests for invalid unitfiles

1 files changed, 20 insertions, 0 deletions

diff --git a/src/test/java/sevenUnits/unit/UnitDatabaseTest.java b/src/test/java/sevenUnits/unit/UnitDatabaseTest.java
index 15bebcb..31323a7 100644
--- a/src/test/java/sevenUnits/unit/UnitDatabaseTest.java
+++ b/src/test/java/sevenUnits/unit/UnitDatabaseTest.java
@@ -33,6 +33,8 @@ import java.util.NoSuchElementException;
 import java.util.Set;
 
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.ValueSource;
 
 /**
  * A test for the {@link UnitDatabase} class. This is NOT part of this program's
@@ -112,6 +114,22 @@ class UnitDatabaseTest {
 	}
 	
 	/**
+	 * A bunch of tests for invalid unit files
+	 *
+	 * @param num which file to test
+	 * @since 2021-09-27
+	 */
+	@ParameterizedTest
+	@ValueSource(ints = { 1, 2, 3, 4, 5 })
+	public void testLoadingInvalidFile(int num) {
+		final UnitDatabase database = new UnitDatabase();
+		final String filename = String.format("/test-unitsfile-invalid%d.txt",
+				num);
+		assertThrows(IllegalArgumentException.class,
+				() -> loadUnitsFile(database, filename));
+	}
+	
+	/**
 	 * Tests loading a valid unitfile with some prefixes and no units.
 	 * 
 	 * @since 2021-09-22
@@ -161,6 +179,8 @@ class UnitDatabaseTest {
 				.times(A.getMultiplier() + C.getMultiplier() - B.getMultiplier());
 		final Unit actual3 = database.getUnit("test3");
 		assertEquals(expected3, actual3);
+		
+		assertTrue(System.err.toString().length() > 0);
 	}
 	
 	/**