feat: add test for terminal echo to file

test/e2e/terminal.test.ts

@@ -1,4 +1,8 @@
 import { test, expect } from "@playwright/test"
+import * as fs from "fs"
+import { tmpdir } from "os"
+import * as path from "path"
+
 import { STORAGE } from "../utils/constants"
 import { CodeServer } from "./models/CodeServer"
 
@@ -6,7 +10,7 @@ test.describe("Integrated Terminal", () => {
   // Create a new context with the saved storage state
   // so we don't have to logged in
   const options: any = {}
-  const testFileName = "hello.txt"
+  const testFileName = "test.txt"
   const testString = "new string test from e2e test"
   let codeServer: CodeServer
 
@@ -25,36 +29,34 @@ test.describe("Integrated Terminal", () => {
   })
 
   test("should echo a string to a file", options, async ({ page }) => {
-    // Open the default folder
-    await codeServer.openFolder()
-
+    const tmpFolderPath = fs.mkdtempSync(path.join(tmpdir(), "code-server-test"))
+    const tmpFile = `${tmpFolderPath}${path.sep}${testFileName}`
     // Open terminal and type in value
-    await codeServer.viewTerminal()
     await codeServer.focusTerminal()
 
-    await page.keyboard.type(`echo '${testString}' >> ${testFileName}`)
+    // give the terminal a second to load
+    await page.waitForTimeout(3000)
+    await page.keyboard.type(`echo '${testString}' > ${tmpFile}`)
+    // Wait for the typing to finish before hitting enter
+    await page.waitForTimeout(500)
     await page.keyboard.press("Enter")
     await page.waitForTimeout(2000)
-    // It should show up on the left sidebar as a new file
-    const isFileVisible = await page.isVisible(`text="${testFileName}"`)
-    expect(isFileVisible).toBe(true)
 
-    if (isFileVisible) {
-      // Check that the file has the test string in it
-      await codeServer.quickOpen(testFileName)
-      expect(await page.isVisible(`text="${testString}"`)).toBe(true)
+    // .access checks if the file exists without opening it
+    // it doesn't return anything hence why we expect it to
+    // resolve to undefined
+    // If the promise rejects (i.e. the file doesn't exist)
+    // then the assertion will fail
+    await expect(fs.promises.access(tmpFile)).resolves.toBeUndefined()
 
-      // Clean up
-      // Remove file
-      await codeServer.focusTerminal()
-      await page.keyboard.type(`rm ${testFileName}`)
-      await page.keyboard.press("Enter")
-      await page.waitForTimeout(2000)
-      // Close the file from workbench
-      // otherwise it will still be visible
-      // and our assertion will fail
-      await page.keyboard.press(`Meta+W`)
-      expect(await page.isVisible(`text="${testString}"`)).toBe(false)
-    }
+    await fs.promises.rmdir(tmpFolderPath, { recursive: true })
+    // Make sure neither file nor folder exist
+    // Note: We have to use ts-ignore because of an upstream typing error
+    // See: https://github.com/microsoft/folio/issues/230#event-4621948411
+    /* eslint-disable @typescript-eslint/ban-ts-comment */
+    // @ts-ignore
+    expect(fs.promises.access(tmpFile)).rejects.toThrowError(/no such file or directory/)
+    // @ts-ignore
+    expect(fs.promises.access(tmpFolderPath)).rejects.toThrowError(/no such file or directory/)
   })
 })