1 files changed, 32 insertions, 0 deletions
diff --git a/src/utils/bases.test.ts b/src/utils/bases.test.ts
new file mode 100644
index 0000000..9341b18
--- /dev/null
+++ b/src/utils/bases.test.ts
@@ -0,0 +1,32 @@
+import { assertEquals, assertThrows } from "@std/assert";
+import { describe, it } from "@std/testing/bdd";
+import { bufferToBase } from "./bases.ts";
+
+describe("bufferToBase", () => {
+  it("returns an empty string for an empty Uint8Array", () => {
+    assertEquals(bufferToBase(new Uint8Array([]), 16), "");
+  });
+
+  it("converts bytes to hexadecimal (base 16)", () => {
+    const input = new Uint8Array([0, 1, 15, 16, 255]);
+    const expected = "00010f10ff";
+    assertEquals(bufferToBase(input, 16), expected);
+  });
+
+  it("converts bytes to binary (base 2)", () => {
+    const input = new Uint8Array([255, 0, 1]);
+    const expected = "111111110000000000000001";
+    assertEquals(bufferToBase(input, 2), expected);
+  });
+
+  it("converts bytes to octal (base 8)", () => {
+    const input = new Uint8Array([8, 64, 255]);
+    const expected = "010100377";
+    assertEquals(bufferToBase(input, 8), expected);
+  });
+
+  it("throws on invalid base", () => {
+    assertThrows(() => bufferToBase(new Uint8Array([1, 2]), 1), RangeError);
+    assertThrows(() => bufferToBase(new Uint8Array([1, 2]), 37), RangeError);
+  });
+});