Move tmpdir test helper to test helpers file

test/e2e/terminal.test.ts

@@ -1,10 +1,10 @@
-import { test, expect } from "@playwright/test"
+import { expect, test } from "@playwright/test"
 import * as cp from "child_process"
 import * as fs from "fs"
-// import { tmpdir } from "os"
 import * as path from "path"
 import util from "util"
-import { STORAGE, tmpdir } from "../utils/constants"
+import { STORAGE } from "../utils/constants"
+import { tmpdir } from "../utils/helpers"
 import { CodeServer } from "./models/CodeServer"
 
 test.describe("Integrated Terminal", () => {

test/unit/constants.test.ts

@@ -1,5 +1,3 @@
-import * as fs from "fs"
-import { tmpdir } from "../../test/utils/constants"
 import { loggerModule } from "../utils/helpers"
 
 // jest.mock is hoisted above the imports so we must use `require` here.
@@ -89,16 +87,3 @@ describe("constants", () => {
     })
   })
 })
-
-describe("test constants", () => {
-  describe("tmpdir", () => {
-    it("should return a temp directory", async () => {
-      const testName = "temp-dir"
-      const pathToTempDir = await tmpdir(testName)
-
-      expect(pathToTempDir).toContain(testName)
-
-      await fs.promises.rmdir(pathToTempDir)
-    })
-  })
-})

test/unit/helpers.test.ts

@@ -0,0 +1,14 @@
+import { promises as fs } from "fs"
+import { tmpdir } from "../../test/utils/helpers"
+
+/**
+ * This file is for testing test helpers (not core code).
+ */
+describe("test helpers", () => {
+  it("should return a temp directory", async () => {
+    const testName = "temp-dir"
+    const pathToTempDir = await tmpdir(testName)
+    expect(pathToTempDir).toContain(testName)
+    expect(fs.access(pathToTempDir)).resolves.toStrictEqual(undefined)
+  })
+})

test/utils/constants.ts

@@ -1,14 +1,3 @@
-import * as fs from "fs"
-import * as os from "os"
-import * as path from "path"
-
 export const CODE_SERVER_ADDRESS = process.env.CODE_SERVER_ADDRESS || "http://localhost:8080"
 export const PASSWORD = process.env.PASSWORD || "e45432jklfdsab"
 export const STORAGE = process.env.STORAGE || ""
-
-export async function tmpdir(testName: string): Promise<string> {
-  const dir = path.join(os.tmpdir(), "code-server")
-  await fs.promises.mkdir(dir, { recursive: true })
-
-  return await fs.promises.mkdtemp(path.join(dir, `test-${testName}-`), { encoding: "utf8" })
-}

test/utils/helpers.ts

@@ -1,3 +1,7 @@
+import * as fs from "fs"
+import * as os from "os"
+import * as path from "path"
+
 export const loggerModule = {
   field: jest.fn(),
   level: 2,
@@ -9,3 +13,15 @@ export const loggerModule = {
     warn: jest.fn(),
   },
 }
+
+/**
+ * Create a uniquely named temporary directory.
+ *
+ * These directories are placed under a single temporary code-server directory.
+ */
+export async function tmpdir(testName: string): Promise<string> {
+  const dir = path.join(os.tmpdir(), "code-server")
+  await fs.promises.mkdir(dir, { recursive: true })
+
+  return await fs.promises.mkdtemp(path.join(dir, `test-${testName}-`), { encoding: "utf8" })
+}