Do not change default version on known checksum update (#39)

__tests__/download/checksum/checksum.test.ts

@@ -0,0 +1,37 @@
+import { expect, test, it } from "@jest/globals";
+import {
+  isknownVersion,
+  validateChecksum,
+} from "../../../src/download/checksum/checksum";
+
+test("checksum should match", async () => {
+  const validChecksum =
+    "f3da96ec7e995debee7f5d52ecd034dfb7074309a1da42f76429ecb814d813a3";
+  const filePath = "__tests__/fixtures/checksumfile";
+  // string params don't matter only test the checksum mechanism, not known checksums
+  await validateChecksum(
+    validChecksum,
+    filePath,
+    "aarch64",
+    "pc-windows-msvc",
+    "1.2.3",
+  );
+});
+
+type KnownVersionFixture = { version: string; known: boolean };
+
+it.each<KnownVersionFixture>([
+  {
+    version: "0.3.0",
+    known: true,
+  },
+  {
+    version: "0.0.15",
+    known: false,
+  },
+])(
+  "isknownVersion should return $known for version $version",
+  ({ version, known }) => {
+    expect(isknownVersion(version)).toBe(known);
+  },
+);