Add tests for NameSymbol

1 files changed, 8 insertions, 4 deletions

diff --git a/src/main/java/sevenUnits/utils/NameSymbol.java b/src/main/java/sevenUnits/utils/NameSymbol.java
index 49c44fa..290dcd6 100644
--- a/src/main/java/sevenUnits/utils/NameSymbol.java
+++ b/src/main/java/sevenUnits/utils/NameSymbol.java
@@ -196,14 +196,18 @@ public final class NameSymbol {
 	 *                    of the argument
 	 * @since 2019-10-21
 	 */
-	private NameSymbol(final Optional<String> primaryName,
+	NameSymbol(final Optional<String> primaryName,
 			final Optional<String> symbol, final Set<String> otherNames) {
 		this.primaryName = primaryName;
 		this.symbol = symbol;
-		otherNames.remove(null);
-		this.otherNames = Collections.unmodifiableSet(otherNames);
+		if (otherNames != null) {
+			otherNames.remove(null);
+			this.otherNames = Collections.unmodifiableSet(otherNames);
+		} else {
+			this.otherNames = Set.of();
+		}
 
-		if (this.primaryName.isEmpty()) {
+		if (this.primaryName == null || this.primaryName.isEmpty()) {
 			assert this.otherNames.isEmpty();
 		}
 	}