feat(std/node): add directory classes (#4087)

1 files changed, 123 insertions, 0 deletions

diff --git a/std/node/_fs_dirent_test.ts b/std/node/_fs_dirent_test.ts
new file mode 100644
index 000000000..acbaffc50
--- /dev/null
+++ b/std/node/_fs_dirent_test.ts
@@ -0,0 +1,123 @@
+const { test } = Deno;
+import { assert, assertEquals, assertThrows } from "../testing/asserts.ts";
+import Dirent from "./_fs_dirent.ts";
+
+class FileInfoMock implements Deno.FileInfo {
+  len = -1;
+  modified = -1;
+  accessed = -1;
+  created = -1;
+  name = "";
+  dev = -1;
+  ino = -1;
+  mode = -1;
+  nlink = -1;
+  uid = -1;
+  gid = -1;
+  rdev = -1;
+  blksize = -1;
+  blocks: number | null = null;
+
+  isFileMock = false;
+  isDirectoryMock = false;
+  isSymlinkMock = false;
+
+  isFile(): boolean {
+    return this.isFileMock;
+  }
+  isDirectory(): boolean {
+    return this.isDirectoryMock;
+  }
+  isSymlink(): boolean {
+    return this.isSymlinkMock;
+  }
+}
+
+test({
+  name: "Block devices are correctly identified",
+  fn() {
+    const fileInfo: FileInfoMock = new FileInfoMock();
+    fileInfo.blocks = 5;
+    assert(new Dirent(fileInfo).isBlockDevice());
+    assert(!new Dirent(fileInfo).isCharacterDevice());
+  }
+});
+
+test({
+  name: "Character devices are correctly identified",
+  fn() {
+    const fileInfo: FileInfoMock = new FileInfoMock();
+    fileInfo.blocks = null;
+    assert(new Dirent(fileInfo).isCharacterDevice());
+    assert(!new Dirent(fileInfo).isBlockDevice());
+  }
+});
+
+test({
+  name: "Directories are correctly identified",
+  fn() {
+    const fileInfo: FileInfoMock = new FileInfoMock();
+    fileInfo.isDirectoryMock = true;
+    fileInfo.isFileMock = false;
+    fileInfo.isSymlinkMock = false;
+    assert(new Dirent(fileInfo).isDirectory());
+    assert(!new Dirent(fileInfo).isFile());
+    assert(!new Dirent(fileInfo).isSymbolicLink());
+  }
+});
+
+test({
+  name: "Files are correctly identified",
+  fn() {
+    const fileInfo: FileInfoMock = new FileInfoMock();
+    fileInfo.isDirectoryMock = false;
+    fileInfo.isFileMock = true;
+    fileInfo.isSymlinkMock = false;
+    assert(!new Dirent(fileInfo).isDirectory());
+    assert(new Dirent(fileInfo).isFile());
+    assert(!new Dirent(fileInfo).isSymbolicLink());
+  }
+});
+
+test({
+  name: "Symlinks are correctly identified",
+  fn() {
+    const fileInfo: FileInfoMock = new FileInfoMock();
+    fileInfo.isDirectoryMock = false;
+    fileInfo.isFileMock = false;
+    fileInfo.isSymlinkMock = true;
+    assert(!new Dirent(fileInfo).isDirectory());
+    assert(!new Dirent(fileInfo).isFile());
+    assert(new Dirent(fileInfo).isSymbolicLink());
+  }
+});
+
+test({
+  name: "File name is correct",
+  fn() {
+    const fileInfo: FileInfoMock = new FileInfoMock();
+    fileInfo.name = "my_file";
+    assertEquals(new Dirent(fileInfo).name, "my_file");
+  }
+});
+
+test({
+  name: "Socket and FIFO pipes aren't yet available",
+  fn() {
+    const fileInfo: FileInfoMock = new FileInfoMock();
+    assertThrows(
+      () => {
+        new Dirent(fileInfo).isFIFO();
+      },
+      Error,
+      "does not yet support"
+    );
+    assertThrows(
+      () => {
+        new Dirent(fileInfo).isSocket();
+      },
+      Error,
+      "does not yet support"
+    );
+  }
+});