add default value type tests

vojtatranta · Nov 26, 2024 · cf5751e · cf5751e
1 parent 9cedb47
commit cf5751e
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/src/Maybe.test.ts b/src/Maybe.test.ts
@@ -48,6 +48,18 @@ describe("Maybe", () => {
       expect(result).toEqual("a");
     });
 
+    it("should return the default value type when the mapping returns falsy", () => {
+      const result: "b" = Maybe.of("a" as const)
+        .map(() => null)
+        .getValue("b");
+      expect(result).toEqual("b");
+    });
+
+    it("should return the default value type when the value is null", () => {
+      const result: "b" = Maybe.of(null).getValue("b");
+      expect(result).toEqual("b");
+    });
+
     it("should return original when default parameter is NOT passed to getValue()", () => {
       const a = "a" as const;