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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
const { test } = Deno;
import {
assertEquals,
assert,
assertThrows,
assertThrowsAsync
} from "../../testing/asserts.ts";
import { appendFile, appendFileSync } from "./_fs_appendFile.ts";
const decoder = new TextDecoder("utf-8");
test({
name: "No callback Fn results in Error",
async fn() {
await assertThrowsAsync(
async () => {
await appendFile("some/path", "some data", "utf8");
},
Error,
"No callback function supplied"
);
}
});
test({
name: "Unsupported encoding results in error()",
async fn() {
await assertThrowsAsync(
async () => {
await appendFile(
"some/path",
"some data",
"made-up-encoding",
() => {}
);
},
Error,
"Only 'utf8' encoding is currently supported"
);
await assertThrowsAsync(
async () => {
await appendFile(
"some/path",
"some data",
{ encoding: "made-up-encoding" },
() => {}
);
},
Error,
"Only 'utf8' encoding is currently supported"
);
assertThrows(
() => appendFileSync("some/path", "some data", "made-up-encoding"),
Error,
"Only 'utf8' encoding is currently supported"
);
assertThrows(
() =>
appendFileSync("some/path", "some data", {
encoding: "made-up-encoding"
}),
Error,
"Only 'utf8' encoding is currently supported"
);
}
});
test({
name: "Async: Data is written to passed in rid",
async fn() {
const tempFile: string = await Deno.makeTempFile();
const file: Deno.File = await Deno.open(tempFile, {
create: true,
write: true,
read: true
});
let calledBack = false;
await appendFile(file.rid, "hello world", () => {
calledBack = true;
});
assert(calledBack);
Deno.close(file.rid);
const data = await Deno.readFile(tempFile);
assertEquals(decoder.decode(data), "hello world");
await Deno.remove(tempFile);
}
});
test({
name: "Async: Data is written to passed in file path",
async fn() {
let calledBack = false;
const openResourcesBeforeAppend: Deno.ResourceMap = Deno.resources();
await appendFile("_fs_appendFile_test_file.txt", "hello world", () => {
calledBack = true;
});
assert(calledBack);
assertEquals(Deno.resources(), openResourcesBeforeAppend);
const data = await Deno.readFile("_fs_appendFile_test_file.txt");
assertEquals(decoder.decode(data), "hello world");
await Deno.remove("_fs_appendFile_test_file.txt");
}
});
test({
name:
"Async: Callback is made with error if attempting to append data to an existing file with 'ax' flag",
async fn() {
let calledBack = false;
const openResourcesBeforeAppend: Deno.ResourceMap = Deno.resources();
const tempFile: string = await Deno.makeTempFile();
await appendFile(tempFile, "hello world", { flag: "ax" }, (err: Error) => {
calledBack = true;
assert(err);
});
assert(calledBack);
assertEquals(Deno.resources(), openResourcesBeforeAppend);
await Deno.remove(tempFile);
}
});
test({
name: "Sync: Data is written to passed in rid",
fn() {
const tempFile: string = Deno.makeTempFileSync();
const file: Deno.File = Deno.openSync(tempFile, {
create: true,
write: true,
read: true
});
appendFileSync(file.rid, "hello world");
Deno.close(file.rid);
const data = Deno.readFileSync(tempFile);
assertEquals(decoder.decode(data), "hello world");
Deno.removeSync(tempFile);
}
});
test({
name: "Sync: Data is written to passed in file path",
fn() {
const openResourcesBeforeAppend: Deno.ResourceMap = Deno.resources();
appendFileSync("_fs_appendFile_test_file_sync.txt", "hello world");
assertEquals(Deno.resources(), openResourcesBeforeAppend);
const data = Deno.readFileSync("_fs_appendFile_test_file_sync.txt");
assertEquals(decoder.decode(data), "hello world");
Deno.removeSync("_fs_appendFile_test_file_sync.txt");
}
});
test({
name:
"Sync: error thrown if attempting to append data to an existing file with 'ax' flag",
fn() {
const openResourcesBeforeAppend: Deno.ResourceMap = Deno.resources();
const tempFile: string = Deno.makeTempFileSync();
assertThrows(
() => appendFileSync(tempFile, "hello world", { flag: "ax" }),
Deno.errors.AlreadyExists,
""
);
assertEquals(Deno.resources(), openResourcesBeforeAppend);
Deno.removeSync(tempFile);
}
});
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