test(std/node): make tests runnable from any directory (#7397)

This makes std/node tests runnable from any directory by resolving the
testdata directory and files relative to the module directory resolved
from import.meta.url.

3 files changed, 6 insertions, 7 deletions

diff --git a/std/node/_fs/_fs_readFile_test.ts b/std/node/_fs/_fs_readFile_test.ts
index ff449dbb2..9ada80057 100644
--- a/std/node/_fs/_fs_readFile_test.ts
+++ b/std/node/_fs/_fs_readFile_test.ts
@@ -2,9 +2,8 @@ import { readFile, readFileSync } from "./_fs_readFile.ts";
 import * as path from "../../path/mod.ts";
 import { assertEquals, assert } from "../../testing/asserts.ts";
 
-const testData = path.resolve(
-  path.join("node", "_fs", "testdata", "hello.txt"),
-);
+const moduleDir = path.dirname(path.fromFileUrl(import.meta.url));
+const testData = path.resolve(moduleDir, "testdata", "hello.txt");
 
 Deno.test("readFileSuccess", async function () {
   const data = await new Promise((res, rej) => {
diff --git a/std/node/_fs/_fs_writeFile_test.ts b/std/node/_fs/_fs_writeFile_test.ts
index a11e0fb67..6d50d1013 100644
--- a/std/node/_fs/_fs_writeFile_test.ts
+++ b/std/node/_fs/_fs_writeFile_test.ts
@@ -9,7 +9,8 @@ import { writeFile, writeFileSync } from "./_fs_writeFile.ts";
 import type { TextEncodings } from "./_fs_common.ts";
 import * as path from "../../path/mod.ts";
 
-const testDataDir = path.resolve(path.join("node", "_fs", "testdata"));
+const moduleDir = path.dirname(path.fromFileUrl(import.meta.url));
+const testDataDir = path.resolve(moduleDir, "testdata");
 const decoder = new TextDecoder("utf-8");
 
 Deno.test("Callback must be a function error", function fn() {
diff --git a/std/node/_fs/promises/_fs_readFile_test.ts b/std/node/_fs/promises/_fs_readFile_test.ts
index a5f5a1327..5414a3a09 100644
--- a/std/node/_fs/promises/_fs_readFile_test.ts
+++ b/std/node/_fs/promises/_fs_readFile_test.ts
@@ -2,9 +2,8 @@ import { readFile } from "./_fs_readFile.ts";
 import * as path from "../../../path/mod.ts";
 import { assertEquals, assert } from "../../../testing/asserts.ts";
 
-const testData = path.resolve(
-  path.join("node", "_fs", "testdata", "hello.txt"),
-);
+const moduleDir = path.dirname(path.fromFileUrl(import.meta.url));
+const testData = path.resolve(moduleDir, "..", "testdata", "hello.txt");
 
 Deno.test("readFileSuccess", async function () {
   const data: Uint8Array = await readFile(testData);