feat(node): implement fs.statfs() (#22862)

1 files changed, 77 insertions, 0 deletions

diff --git a/tests/unit_node/_fs/_fs_statfs_test.ts b/tests/unit_node/_fs/_fs_statfs_test.ts
new file mode 100644
index 000000000..fde1c8fed
--- /dev/null
+++ b/tests/unit_node/_fs/_fs_statfs_test.ts
@@ -0,0 +1,77 @@
+// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
+
+import * as fs from "node:fs";
+import { assertEquals, assertRejects } from "@std/assert/mod.ts";
+import * as path from "@std/path/mod.ts";
+
+function assertStatFs(
+  statFs: fs.StatsFsBase<unknown>,
+  { bigint = false } = {},
+) {
+  assertEquals(statFs.constructor.name, "StatFs");
+  const expectedType = bigint ? "bigint" : "number";
+  assertEquals(typeof statFs.type, expectedType);
+  assertEquals(typeof statFs.bsize, expectedType);
+  assertEquals(typeof statFs.blocks, expectedType);
+  assertEquals(typeof statFs.bfree, expectedType);
+  assertEquals(typeof statFs.bavail, expectedType);
+  assertEquals(typeof statFs.files, expectedType);
+  assertEquals(typeof statFs.ffree, expectedType);
+  if (Deno.build.os == "windows") {
+    assertEquals(statFs.type, bigint ? 0n : 0);
+    assertEquals(statFs.files, bigint ? 0n : 0);
+    assertEquals(statFs.ffree, bigint ? 0n : 0);
+  }
+}
+
+const filePath = path.fromFileUrl(import.meta.url);
+
+Deno.test({
+  name: "fs.statfs()",
+  async fn() {
+    await new Promise<fs.StatsFsBase<unknown>>((resolve, reject) => {
+      fs.statfs(filePath, (err, statFs) => {
+        if (err) reject(err);
+        resolve(statFs);
+      });
+    }).then((statFs) => assertStatFs(statFs));
+  },
+});
+
+Deno.test({
+  name: "fs.statfs() bigint",
+  async fn() {
+    await new Promise<fs.StatsFsBase<unknown>>((resolve, reject) => {
+      fs.statfs(filePath, { bigint: true }, (err, statFs) => {
+        if (err) reject(err);
+        resolve(statFs);
+      });
+    }).then((statFs) => assertStatFs(statFs, { bigint: true }));
+  },
+});
+
+Deno.test({
+  name: "fs.statfsSync()",
+  fn() {
+    const statFs = fs.statfsSync(filePath);
+    assertStatFs(statFs);
+  },
+});
+
+Deno.test({
+  name: "fs.statfsSync() bigint",
+  fn() {
+    const statFs = fs.statfsSync(filePath, { bigint: true });
+    assertStatFs(statFs, { bigint: true });
+  },
+});
+
+Deno.test({
+  name: "fs.statfs() non-existent path",
+  async fn() {
+    const nonExistentPath = path.join(filePath, "../non-existent");
+    await assertRejects(async () => {
+      await fs.promises.statfs(nonExistentPath);
+    }, "NotFound");
+  },
+});