v3

packages/shared/src/compression.test.ts

@@ -0,0 +1,26 @@
+import { describe, expect, it } from "vitest";
+import { compress, decompress, utf8ToBytes } from "./index";
+
+describe("compression", () => {
+  it("round-trips small text", () => {
+    const data = utf8ToBytes("hello world");
+    const compressed = compress(data);
+    const decompressed = decompress(compressed);
+    expect(decompressed).toEqual(data);
+  });
+
+  it("round-trips highly compressible data", () => {
+    const data = utf8ToBytes("a".repeat(10_000));
+    const compressed = compress(data);
+    expect(compressed.length).toBeLessThan(data.length);
+    const decompressed = decompress(compressed);
+    expect(decompressed).toEqual(data);
+  });
+
+  it("round-trips arbitrary bytes", () => {
+    const data = new Uint8Array([0, 128, 255, 1, 2, 3, 200, 100]);
+    const compressed = compress(data);
+    const decompressed = decompress(compressed);
+    expect(decompressed).toEqual(data);
+  });
+});