feat(std/fs/node): adding some functions (#7921)

1 files changed, 209 insertions, 0 deletions

diff --git a/std/node/_fs/_fs_open_test.ts b/std/node/_fs/_fs_open_test.ts
new file mode 100644
index 000000000..4cbd58d02
--- /dev/null
+++ b/std/node/_fs/_fs_open_test.ts
@@ -0,0 +1,209 @@
+import {
+  assert,
+  assertEquals,
+  assertThrows,
+  fail,
+} from "../../testing/asserts.ts";
+import { open, openSync } from "./_fs_open.ts";
+import { join, parse } from "../../path/mod.ts";
+import { existsSync } from "../../fs/mod.ts";
+import { closeSync } from "./_fs_close.ts";
+
+const temp_dir = parse(Deno.makeTempFileSync()).dir;
+
+Deno.test({
+  name: "ASYNC: open file",
+  async fn() {
+    const file = Deno.makeTempFileSync();
+    let fd1: number;
+    await new Promise<number>((resolve, reject) => {
+      open(file, (err, fd) => {
+        if (err) reject(err);
+        resolve(fd);
+      });
+    })
+      .then((fd) => {
+        fd1 = fd;
+        assert(Deno.resources()[fd], `${fd}`);
+      })
+      .catch(() => fail())
+      .finally(() => closeSync(fd1));
+  },
+});
+
+Deno.test({
+  name: "SYNC: open file",
+  fn() {
+    const file = Deno.makeTempFileSync();
+    const fd = openSync(file);
+    assert(Deno.resources()[fd]);
+    closeSync(fd);
+  },
+});
+
+Deno.test({
+  name: "open with flag 'a'",
+  fn() {
+    const file = join(temp_dir, "some_random_file");
+    const fd = openSync(file, "a");
+    assertEquals(typeof fd, "number");
+    assertEquals(existsSync(file), true);
+    assert(Deno.resources()[fd]);
+    closeSync(fd);
+  },
+});
+
+Deno.test({
+  name: "open with flag 'ax'",
+  fn() {
+    const file = Deno.makeTempFileSync();
+    assertThrows(
+      () => {
+        openSync(file, "ax");
+      },
+      Error,
+      `EEXIST: file already exists, open '${file}'`,
+    );
+    Deno.removeSync(file);
+  },
+});
+
+Deno.test({
+  name: "open with flag 'a+'",
+  fn() {
+    const file = join(temp_dir, "some_random_file2");
+    const fd = openSync(file, "a+");
+    assertEquals(typeof fd, "number");
+    assertEquals(existsSync(file), true);
+    closeSync(fd);
+  },
+});
+
+Deno.test({
+  name: "open with flag 'ax+'",
+  fn() {
+    const file = Deno.makeTempFileSync();
+    assertThrows(
+      () => {
+        openSync(file, "ax+");
+      },
+      Error,
+      `EEXIST: file already exists, open '${file}'`,
+    );
+    Deno.removeSync(file);
+  },
+});
+
+Deno.test({
+  name: "open with flag 'as'",
+  fn() {
+    const file = join(temp_dir, "some_random_file10");
+    const fd = openSync(file, "as");
+    assertEquals(existsSync(file), true);
+    assertEquals(typeof fd, "number");
+    closeSync(fd);
+  },
+});
+
+Deno.test({
+  name: "open with flag 'as+'",
+  fn() {
+    const file = join(temp_dir, "some_random_file10");
+    const fd = openSync(file, "as+");
+    assertEquals(existsSync(file), true);
+    assertEquals(typeof fd, "number");
+    closeSync(fd);
+  },
+});
+
+Deno.test({
+  name: "open with flag 'r'",
+  fn() {
+    const file = join(temp_dir, "some_random_file3");
+    assertThrows(() => {
+      openSync(file, "r");
+    }, Error);
+  },
+});
+
+Deno.test({
+  name: "open with flag 'r+'",
+  fn() {
+    const file = join(temp_dir, "some_random_file4");
+    assertThrows(() => {
+      openSync(file, "r+");
+    }, Error);
+  },
+});
+
+Deno.test({
+  name: "open with flag 'w'",
+  fn() {
+    const file = Deno.makeTempFileSync();
+    Deno.writeTextFileSync(file, "hi there");
+    const fd = openSync(file, "w");
+    assertEquals(typeof fd, "number");
+    assertEquals(Deno.readTextFileSync(file), "");
+    closeSync(fd);
+
+    const file2 = join(temp_dir, "some_random_file5");
+    const fd2 = openSync(file2, "w");
+    assertEquals(typeof fd2, "number");
+    assertEquals(existsSync(file2), true);
+    closeSync(fd2);
+  },
+});
+
+Deno.test({
+  name: "open with flag 'wx'",
+  fn() {
+    const file = Deno.makeTempFileSync();
+    Deno.writeTextFileSync(file, "hi there");
+    const fd = openSync(file, "w");
+    assertEquals(typeof fd, "number");
+    assertEquals(Deno.readTextFileSync(file), "");
+    closeSync(fd);
+
+    const file2 = Deno.makeTempFileSync();
+    assertThrows(
+      () => {
+        openSync(file2, "wx");
+      },
+      Error,
+      `EEXIST: file already exists, open '${file2}'`,
+    );
+  },
+});
+
+Deno.test({
+  name: "open with flag 'w+'",
+  fn() {
+    const file = Deno.makeTempFileSync();
+    Deno.writeTextFileSync(file, "hi there");
+    const fd = openSync(file, "w+");
+    assertEquals(typeof fd, "number");
+    assertEquals(Deno.readTextFileSync(file), "");
+    closeSync(fd);
+
+    const file2 = join(temp_dir, "some_random_file6");
+    const fd2 = openSync(file2, "w+");
+    assertEquals(typeof fd2, "number");
+    assertEquals(existsSync(file2), true);
+    closeSync(fd2);
+  },
+});
+
+Deno.test({
+  name: "open with flag 'wx+'",
+  fn() {
+    const file = Deno.makeTempFileSync();
+    assertThrows(
+      () => {
+        openSync(file, "wx+");
+      },
+      Error,
+      `EEXIST: file already exists, open '${file}'`,
+    );
+    Deno.removeSync(file);
+  },
+});