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a21a5ad2fa
Resolves #1705 This PR adds the Deno APIs as a global namespace named `Deno`. For backwards compatibility, the ability to `import * from "deno"` is preserved. I have tried to convert every test and internal code the references the module to use the namespace instead, but because I didn't break compatibility I am not sure. On the REPL, `deno` no longer exists, replaced only with `Deno` to align with the regular runtime. The runtime type library includes both the namespace and module. This means it duplicates the whole type information. When we remove the functionality from the runtime, it will be a one line change to the library generator to remove the module definition from the type library. I marked a `TODO` in a couple places where to remove the `"deno"` module, but there are additional places I know I didn't mark.
155 lines
4.6 KiB
TypeScript
155 lines
4.6 KiB
TypeScript
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
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import { test, testPerm, assert, assertEqual } from "./test_util.ts";
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test(function filesStdioFileDescriptors() {
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assertEqual(Deno.stdin.rid, 0);
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assertEqual(Deno.stdout.rid, 1);
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assertEqual(Deno.stderr.rid, 2);
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});
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testPerm({ read: true }, async function filesCopyToStdout() {
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const filename = "package.json";
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const file = await Deno.open(filename);
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assert(file.rid > 2);
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const bytesWritten = await Deno.copy(Deno.stdout, file);
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const fileSize = Deno.statSync(filename).len;
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assertEqual(bytesWritten, fileSize);
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console.log("bytes written", bytesWritten);
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});
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testPerm({ read: true }, async function filesToAsyncIterator() {
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const filename = "tests/hello.txt";
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const file = await Deno.open(filename);
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let totalSize = 0;
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for await (const buf of Deno.toAsyncIterator(file)) {
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totalSize += buf.byteLength;
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}
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assertEqual(totalSize, 12);
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});
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testPerm({ write: false }, async function writePermFailure() {
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const filename = "tests/hello.txt";
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const writeModes: Deno.OpenMode[] = ["w", "a", "x"];
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for (const mode of writeModes) {
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let err;
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try {
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await Deno.open(filename, mode);
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} catch (e) {
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err = e;
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}
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assert(!!err);
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assertEqual(err.kind, Deno.ErrorKind.PermissionDenied);
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assertEqual(err.name, "PermissionDenied");
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}
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});
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testPerm({ read: false }, async function readPermFailure() {
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let caughtError = false;
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try {
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await Deno.open("package.json", "r");
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} catch (e) {
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caughtError = true;
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assertEqual(e.kind, Deno.ErrorKind.PermissionDenied);
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assertEqual(e.name, "PermissionDenied");
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}
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assert(caughtError);
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});
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testPerm({ write: false, read: false }, async function readWritePermFailure() {
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const filename = "tests/hello.txt";
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const writeModes: Deno.OpenMode[] = ["r+", "w+", "a+", "x+"];
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for (const mode of writeModes) {
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let err;
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try {
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await Deno.open(filename, mode);
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} catch (e) {
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err = e;
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}
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assert(!!err);
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assertEqual(err.kind, Deno.ErrorKind.PermissionDenied);
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assertEqual(err.name, "PermissionDenied");
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}
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});
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testPerm({ read: true, write: true }, async function createFile() {
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const tempDir = await Deno.makeTempDir();
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const filename = tempDir + "/test.txt";
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const f = await Deno.open(filename, "w");
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let fileInfo = Deno.statSync(filename);
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assert(fileInfo.isFile());
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assert(fileInfo.len === 0);
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const enc = new TextEncoder();
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const data = enc.encode("Hello");
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await f.write(data);
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fileInfo = Deno.statSync(filename);
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assert(fileInfo.len === 5);
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f.close();
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// TODO: test different modes
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await Deno.remove(tempDir, { recursive: true });
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});
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testPerm({ read: true, write: true }, async function openModeWrite() {
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const tempDir = Deno.makeTempDirSync();
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const encoder = new TextEncoder();
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const filename = tempDir + "hello.txt";
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const data = encoder.encode("Hello world!\n");
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let file = await Deno.open(filename, "w");
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// assert file was created
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let fileInfo = Deno.statSync(filename);
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assert(fileInfo.isFile());
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assertEqual(fileInfo.len, 0);
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// write some data
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await file.write(data);
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fileInfo = Deno.statSync(filename);
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assertEqual(fileInfo.len, 13);
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// assert we can't read from file
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let thrown = false;
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try {
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const buf = new Uint8Array(20);
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await file.read(buf);
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} catch (e) {
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thrown = true;
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} finally {
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assert(thrown, "'w' mode shouldn't allow to read file");
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}
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file.close();
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// assert that existing file is truncated on open
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file = await Deno.open(filename, "w");
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file.close();
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const fileSize = Deno.statSync(filename).len;
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assertEqual(fileSize, 0);
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await Deno.remove(tempDir, { recursive: true });
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});
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testPerm({ read: true, write: true }, async function openModeWriteRead() {
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const tempDir = Deno.makeTempDirSync();
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const encoder = new TextEncoder();
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const filename = tempDir + "hello.txt";
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const data = encoder.encode("Hello world!\n");
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const file = await Deno.open(filename, "w+");
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// assert file was created
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let fileInfo = Deno.statSync(filename);
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assert(fileInfo.isFile());
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assertEqual(fileInfo.len, 0);
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// write some data
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await file.write(data);
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fileInfo = Deno.statSync(filename);
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assertEqual(fileInfo.len, 13);
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// TODO: this test is not working, I expect because
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// file handle points to the end of file, but ATM
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// deno has no seek implementation on Rust side
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// assert file can be read
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// const buf = new Uint8Array(20);
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// const result = await file.read(buf);
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// console.log(result.eof, result.nread);
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// assertEqual(result.nread, 13);
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// file.close();
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await Deno.remove(tempDir, { recursive: true });
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});
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