Test and fix remove nested

Author: julienmalard

src/nested.ts

@@ -72,7 +72,8 @@ const Nested =
     };
 
     const del = async (key: NestedKey): Promise<string> => {
-      return addOperation({ op: "DEL", key, value: null });
+      const joinedKey = typeof key === "string" ? key : joinKey(key);
+      return addOperation({ op: "DEL", key: joinedKey, value: null });
     };
 
     const get = async (key: NestedKey): Promise<PossiblyNestedValue> => {
@@ -165,6 +166,7 @@ const Nested =
       put,
       set: put,
       putNested,
+      settNested: putNested,
       get,
       del,
       iterator,

test/nested.spec.ts

@@ -183,6 +183,17 @@ describe("Nested Database", () => {
       expect(actualAB).to.equal(1);
     });
 
+    it("remove a nested value", async () => {
+      await db.put(["a/b"], 1);
+      await db.put("a/c", 2);
+
+      await db.del("a/b")
+      await db.del(["a", "c"])
+
+      const actual = await db.all();
+      expect(actual).to.be.empty();
+    });
+
     it("add a nested value - list syntax", async () => {
       const hash1 = await db.put(["a", "b"], 1);
       const hash2 = await db.put(["a", "c"], 2);