test dict

engine/lib/Dictionary.test.ts

@@ -18,9 +18,6 @@ test("Dictionary", () => {
 	setEntrySave(dict, "bar", 0);
 	deleteEntrySave(dict, "bar");
 
-	console.table(dict.entries);
-	console.table(dict.indices);
-
 	expect(getEntry(dict, "foo")).toBe(42);
 	expect(getEntry(dict, "bar")).toBe(undefined);
 	expect(dict.indices.size).toBe(dict.entries.length);
@@ -31,3 +28,37 @@ test("Dictionary", () => {
 	});
 	expect(sum).toBe(48);
 });
+
+test("Dictionary don't mutate, when used 'save', while iterating", () => {
+	const dict: Dictionary<string, number> = createDictionary([
+		["a", 1],
+		["b", 2],
+		["c", 3],
+	]);
+
+	let sum = 0;
+	forEntry(dict, (value, __, index) => {
+		if (index < 1) {
+			setEntrySave(dict, "d", 4);
+			setEntrySave(dict, "e", 5);
+		}
+
+		sum += value;
+	});
+
+	expect(sum).toBe(6);
+	expect(dict.indices.size === 5).toEqual(dict.entries.length === 5);
+
+	sum = 0;
+	forEntry(dict, (value, __, index) => {
+		if (index < 1) {
+			deleteEntrySave(dict, "d");
+			deleteEntrySave(dict, "e");
+		}
+
+		sum += value;
+	});
+
+	expect(sum).toBe(15);
+	expect(dict.indices.size === 3).toEqual(dict.entries.length === 3);
+});