First pass at bufio.

Original: https://github.com/denoland/deno_std/commit/c5cc6959705c310f4f7a864d77aae54171707c04

1 files changed, 32 insertions, 0 deletions

diff --git a/bufio_test.ts b/bufio_test.ts
new file mode 100644
index 000000000..a66052ba1
--- /dev/null
+++ b/bufio_test.ts
@@ -0,0 +1,32 @@
+import * as deno from "deno";
+import { test, assertEqual } from "http://deno.land/x/testing/testing.ts";
+import * as bufio from "./bufio.ts";
+import { Buffer } from "./buffer.ts";
+
+async function readBytes(buf: bufio.Reader): Promise<string> {
+  const b = new Uint8Array(1000);
+  let nb = 0;
+  while (true) {
+    let c = await buf.readByte();
+    if (c < 0) {
+      break; // EOF
+    }
+    b[nb] = c;
+    nb++;
+  }
+  const decoder = new TextDecoder();
+  return decoder.decode(b.subarray(0, nb));
+}
+
+function stringsReader(s: string): deno.Reader {
+  const encoder = new TextEncoder();
+  const ui8 = encoder.encode(s);
+  return new Buffer(ui8.buffer as ArrayBuffer);
+}
+
+test(async function bufioReaderSimple() {
+  const data = "hello world";
+  const b = new bufio.Reader(stringsReader(data));
+  const s = await readBytes(b);
+  assertEqual(s, data);
+});