1 files changed, 28 insertions, 0 deletions
diff --git a/tests/format.test.ts b/tests/format.test.ts
new file mode 100644
index 0000000..ae5d40c
--- /dev/null
+++ b/tests/format.test.ts
@@ -0,0 +1,28 @@
+
+
+
+
+/*** IMPORT ------------------------------------------- ***/
+
+import { expect, test } from "vitest";
+
+/*** UTILITY ------------------------------------------ ***/
+
+import { format } from "../source/library/graphql/format.ts";
+
+/*** TESTS -------------------------------------------- ***/
+
+test("format pretty-prints a valid query", () => {
+  const input = "query Foo{viewer{id name}}";
+  const expected = "query Foo {\n  viewer {\n    id\n    name\n  }\n}";
+  expect(format(input)).toEqual(expected);
+});
+
+test("format returns the input unchanged on parse failure", () => {
+  const input = "query { ...";
+  expect(format(input)).toEqual(input);
+});
+
+test("format returns empty string for empty input", () => {
+  expect(format("")).toEqual("");
+});