chore(test): Test murmurHash with utf8-strings, uint8arrays, empty in…

…put etc.
unjs · Sep 14, 2024 · 4002f38 · 4002f38
1 parent 5c10976
commit 4002f38
Showing 1 changed file with 31 additions and 11 deletions.
diff --git a/test/index.test.ts b/test/index.test.ts
@@ -34,17 +34,37 @@ describe("objectHash", () => {
   });
 });
 
-it("murmurHash", () => {
-  expect(murmurHash("Hello World")).toMatchInlineSnapshot("427197390");
-  expect(murmurHash("a")).toMatchInlineSnapshot("1009084850");
-  expect(murmurHash("aa")).toMatchInlineSnapshot("923832745");
-  expect(murmurHash("aaa")).toMatchInlineSnapshot("3033554871");
-  expect(murmurHash("aaaa")).toMatchInlineSnapshot("2129582471");
-  expect(murmurHash("aaaaa")).toMatchInlineSnapshot("3922341931");
-  expect(murmurHash("aaaaaa")).toMatchInlineSnapshot("1736445713");
-  expect(murmurHash("aaaaaaa")).toMatchInlineSnapshot("1497565372");
-  expect(murmurHash("aaaaaaaa")).toMatchInlineSnapshot("3662943087");
-  expect(murmurHash("aaaaaaaaa")).toMatchInlineSnapshot("2724714153");
+describe("murmurHash", () => {
+  it("Generates correct hash for 0 bytes without seed", () => {
+    expect(murmurHash("")).toMatchInlineSnapshot("0");
+  });
+  it("Generates correct hash for 0 bytes with seed", () => {
+    expect(murmurHash("", 1)).toMatchInlineSnapshot("1364076727"); // 0x514E28B7
+  });
+  it("Generates correct hash for 'Hello World'", () => {
+    expect(murmurHash("Hello World")).toMatchInlineSnapshot("427197390");
+  });
+  it("Generates the correct hash for varios string lengths", () => {
+    expect(murmurHash("a")).toMatchInlineSnapshot("1009084850");
+    expect(murmurHash("aa")).toMatchInlineSnapshot("923832745");
+    expect(murmurHash("aaa")).toMatchInlineSnapshot("3033554871");
+    expect(murmurHash("aaaa")).toMatchInlineSnapshot("2129582471");
+    expect(murmurHash("aaaaa")).toMatchInlineSnapshot("3922341931");
+    expect(murmurHash("aaaaaa")).toMatchInlineSnapshot("1736445713");
+    expect(murmurHash("aaaaaaa")).toMatchInlineSnapshot("1497565372");
+    expect(murmurHash("aaaaaaaa")).toMatchInlineSnapshot("3662943087");
+    expect(murmurHash("aaaaaaaaa")).toMatchInlineSnapshot("2724714153");
+  });
+  it("Works with Uint8Arrays", () => {
+    expect(
+      murmurHash(new Uint8Array([0x21, 0x43, 0x65, 0x87])),
+    ).toMatchInlineSnapshot("4116402539"); // 0xF55B516B
+  });
+  it("Handles UTF-8 high characters correctly", () => {
+    expect(murmurHash("ππππππππ", 0x97_47_b2_8c)).toMatchInlineSnapshot(
+      "3581961153",
+    );
+  });
 });
 
 it("sha256", () => {