1 files changed, 74 insertions, 0 deletions
diff --git a/std/bytes/test.ts b/std/bytes/test.ts
new file mode 100644
index 000000000..0a779dd3d
--- /dev/null
+++ b/std/bytes/test.ts
@@ -0,0 +1,74 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+
+import { findIndex, findLastIndex, equal, hasPrefix, repeat } from "./mod.ts";
+import { test } from "../testing/mod.ts";
+import { assertEquals, assertThrows } from "../testing/asserts.ts";
+
+test(function bytesfindIndex1(): void {
+  const i = findIndex(
+    new Uint8Array([1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 3]),
+    new Uint8Array([0, 1, 2])
+  );
+  assertEquals(i, 2);
+});
+
+test(function bytesfindIndex2(): void {
+  const i = findIndex(new Uint8Array([0, 0, 1]), new Uint8Array([0, 1]));
+  assertEquals(i, 1);
+});
+
+test(function bytesfindLastIndex1(): void {
+  const i = findLastIndex(
+    new Uint8Array([0, 1, 2, 0, 1, 2, 0, 1, 3]),
+    new Uint8Array([0, 1, 2])
+  );
+  assertEquals(i, 3);
+});
+
+test(function bytesfindLastIndex2(): void {
+  const i = findLastIndex(new Uint8Array([0, 1, 1]), new Uint8Array([0, 1]));
+  assertEquals(i, 0);
+});
+
+test(function bytesBytesequal(): void {
+  const v = equal(new Uint8Array([0, 1, 2, 3]), new Uint8Array([0, 1, 2, 3]));
+  assertEquals(v, true);
+});
+
+test(function byteshasPrefix(): void {
+  const v = hasPrefix(new Uint8Array([0, 1, 2]), new Uint8Array([0, 1]));
+  assertEquals(v, true);
+});
+
+test(function bytesrepeat(): void {
+  // input / output / count / error message
+  const repeatTestCase = [
+    ["", "", 0],
+    ["", "", 1],
+    ["", "", 1.1, "bytes: repeat count must be an integer"],
+    ["", "", 2],
+    ["", "", 0],
+    ["-", "", 0],
+    ["-", "-", -1, "bytes: negative repeat count"],
+    ["-", "----------", 10],
+    ["abc ", "abc abc abc ", 3]
+  ];
+  for (const [input, output, count, errMsg] of repeatTestCase) {
+    if (errMsg) {
+      assertThrows(
+        (): void => {
+          repeat(new TextEncoder().encode(input as string), count as number);
+        },
+        Error,
+        errMsg as string
+      );
+    } else {
+      const newBytes = repeat(
+        new TextEncoder().encode(input as string),
+        count as number
+      );
+
+      assertEquals(new TextDecoder().decode(newBytes), output);
+    }
+  }
+});