rename toAsyncIterator, add tests

denoland · Oct 31, 2018 · 27dc6d5 · 27dc6d5
1 parent 7c8483d
commit 27dc6d5
Show file tree

Hide file tree

Showing 3 changed files with 15 additions and 2 deletions.
diff --git a/js/deno.ts b/js/deno.ts
@@ -7,7 +7,7 @@ export { chdir, cwd } from "./dir";
 export { File, open, stdin, stdout, stderr, read, write, close } from "./files";
 export {
   copy,
-  readerIterator,
+  toAsyncIterator,
   ReadResult,
   Reader,
   Writer,

diff --git a/js/files_test.ts b/js/files_test.ts
@@ -17,3 +17,16 @@ test(async function filesCopyToStdout() {
   assertEqual(bytesWritten, fileSize);
   console.log("bytes written", bytesWritten);
 });
+
+test(async function filesToAsyncIterator() {
+  const filename = 'tests/hello.txt';
+  const file = await deno.open(filename);
+  const fileSize = deno.statSync(filename).len;
+
+  let totalSize = 0;
+  for await (const buf of deno.toAsyncIterator(file)) {
+    totalSize += buf.byteLength;
+  }
+
+  assertEqual(totalSize, fileSize);
+});
diff --git a/js/io.ts b/js/io.ts
@@ -123,7 +123,7 @@ export async function copy(dst: Writer, src: Reader): Promise<number> {
  *        console.log(chunk)
  *    }
  */
-export function readerIterator(
+export function toAsyncIterator(
   r: Reader
 ): AsyncIterableIterator<ArrayBufferView> {
   const b = new Uint8Array(1024);