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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.import { assertEquals, assertThrows, fail } from "../../testing/asserts.ts";import { appendFile, appendFileSync } from "./_fs_appendFile.ts";import { fromFileUrl } from "../path.ts";import { assertCallbackErrorUncaught } from "../_test_utils.ts";
const decoder = new TextDecoder("utf-8");
Deno.test({  name: "No callback Fn results in Error",  fn() {    assertThrows(      () => {        appendFile("some/path", "some data", "utf8");      },      Error,      "The \"cb\" argument must be of type function. Received type string ('utf8')",    );  },});
Deno.test({  name: "Unsupported encoding results in error()",  fn() {    assertThrows(      () => {        // @ts-expect-error Type '"made-up-encoding"' is not assignable to type        appendFile("some/path", "some data", "made-up-encoding", () => {});      },      Error,      "The argument 'made-up-encoding' is invalid encoding. Received 'encoding'",    );    assertThrows(      () => {        appendFile(          "some/path",          "some data",          // @ts-expect-error Type '"made-up-encoding"' is not assignable to type          { encoding: "made-up-encoding" },          () => {},        );      },      Error,      "The argument 'made-up-encoding' is invalid encoding. Received 'encoding'",    );    assertThrows(      // @ts-expect-error Type '"made-up-encoding"' is not assignable to type      () => appendFileSync("some/path", "some data", "made-up-encoding"),      Error,      "The argument 'made-up-encoding' is invalid encoding. Received 'encoding'",    );    assertThrows(      () =>        appendFileSync("some/path", "some data", {          // @ts-expect-error Type '"made-up-encoding"' is not assignable to type          encoding: "made-up-encoding",        }),      Error,      "The argument 'made-up-encoding' is invalid encoding. Received 'encoding'",    );  },});
Deno.test({  name: "Async: Data is written to passed in rid",  async fn() {    const tempFile: string = await Deno.makeTempFile();    const file: Deno.FsFile = await Deno.open(tempFile, {      create: true,      write: true,      read: true,    });    await new Promise<void>((resolve, reject) => {      appendFile(file.rid, "hello world", (err) => {        if (err) reject();        else resolve();      });    })      .then(async () => {        const data = await Deno.readFile(tempFile);        assertEquals(decoder.decode(data), "hello world");      }, () => {        fail("No error expected");      })      .finally(async () => {        Deno.close(file.rid);        await Deno.remove(tempFile);      });  },});
Deno.test({  name: "Async: Data is written to passed in file path",  async fn() {    const openResourcesBeforeAppend: Deno.ResourceMap = Deno.resources();    await new Promise<void>((resolve, reject) => {      appendFile("_fs_appendFile_test_file.txt", "hello world", (err) => {        if (err) reject(err);        else resolve();      });    })      .then(async () => {        assertEquals(Deno.resources(), openResourcesBeforeAppend);        const data = await Deno.readFile("_fs_appendFile_test_file.txt");        assertEquals(decoder.decode(data), "hello world");      }, (err) => {        fail("No error was expected: " + err);      })      .finally(async () => {        await Deno.remove("_fs_appendFile_test_file.txt");      });  },});
Deno.test({  name: "Async: Data is written to passed in URL",  async fn() {    const openResourcesBeforeAppend: Deno.ResourceMap = Deno.resources();    const fileURL = new URL("_fs_appendFile_test_file.txt", import.meta.url);    await new Promise<void>((resolve, reject) => {      appendFile(fileURL, "hello world", (err) => {        if (err) reject(err);        else resolve();      });    })      .then(async () => {        assertEquals(Deno.resources(), openResourcesBeforeAppend);        const data = await Deno.readFile(fromFileUrl(fileURL));        assertEquals(decoder.decode(data), "hello world");      }, (err) => {        fail("No error was expected: " + err);      })      .finally(async () => {        await Deno.remove(fromFileUrl(fileURL));      });  },});
Deno.test({  name:    "Async: Callback is made with error if attempting to append data to an existing file with 'ax' flag",  async fn() {    const openResourcesBeforeAppend: Deno.ResourceMap = Deno.resources();    const tempFile: string = await Deno.makeTempFile();    await new Promise<void>((resolve, reject) => {      appendFile(tempFile, "hello world", { flag: "ax" }, (err) => {        if (err) reject(err);        else resolve();      });    })      .then(() => {        fail("Expected error to be thrown");      }, () => {        assertEquals(Deno.resources(), openResourcesBeforeAppend);      })      .finally(async () => {        await Deno.remove(tempFile);      });  },});
Deno.test({  name: "Sync: Data is written to passed in rid",  fn() {    const tempFile: string = Deno.makeTempFileSync();    const file: Deno.FsFile = 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);  },});
Deno.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");  },});
Deno.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" }),      Error,      "",    );    assertEquals(Deno.resources(), openResourcesBeforeAppend);    Deno.removeSync(tempFile);  },});
Deno.test({  name: "Sync: Data is written in Uint8Array to passed in file path",  fn() {    const openResourcesBeforeAppend: Deno.ResourceMap = Deno.resources();    const testData = new TextEncoder().encode("hello world");    appendFileSync("_fs_appendFile_test_file_sync.txt", testData);    assertEquals(Deno.resources(), openResourcesBeforeAppend);    const data = Deno.readFileSync("_fs_appendFile_test_file_sync.txt");    assertEquals(data, testData);    Deno.removeSync("_fs_appendFile_test_file_sync.txt");  },});
Deno.test({  name: "Async: Data is written in Uint8Array to passed in file path",  async fn() {    const openResourcesBeforeAppend: Deno.ResourceMap = Deno.resources();    const testData = new TextEncoder().encode("hello world");    await new Promise<void>((resolve, reject) => {      appendFile("_fs_appendFile_test_file.txt", testData, (err) => {        if (err) reject(err);        else resolve();      });    })      .then(async () => {        assertEquals(Deno.resources(), openResourcesBeforeAppend);        const data = await Deno.readFile("_fs_appendFile_test_file.txt");        assertEquals(data, testData);      }, (err) => {        fail("No error was expected: " + err);      })      .finally(async () => {        await Deno.remove("_fs_appendFile_test_file.txt");      });  },});
Deno.test("[std/node/fs] appendFile callback isn't called twice if error is thrown", async () => {  const tempFile = await Deno.makeTempFile();  const importUrl = new URL("./_fs_appendFile.ts", import.meta.url);  await assertCallbackErrorUncaught({    prelude: `import { appendFile } from ${JSON.stringify(importUrl)}`,    invocation: `appendFile(${JSON.stringify(tempFile)}, "hello world", `,    async cleanup() {      await Deno.remove(tempFile);    },  });});