Add test for colliding state

test/e2e/codeServer.test.ts

@@ -33,4 +33,25 @@ describe("CodeServer", true, [], () => {
     await fs.writeFile(file, "bar")
     await codeServerPage.openFile(file)
   })
+
+  test("should not share state with other paths", async ({ codeServerPage }) => {
+    const dir = await codeServerPage.dir()
+    const file = path.join(dir, "foo")
+    await fs.writeFile(file, "bar")
+
+    await codeServerPage.openFile(file)
+
+    // If we reload now VS Code will be unable to save the state changes so wait
+    // until those have been written to the database.  It flushes every five
+    // seconds so we need to wait at least that long.
+    await codeServerPage.page.waitForTimeout(5500)
+
+    // The tab should re-open on refresh.
+    await codeServerPage.page.reload()
+    await codeServerPage.waitForTab(file)
+
+    // The tab should not re-open on a different path.
+    await codeServerPage.setup(true, "/vscode")
+    expect(await codeServerPage.tabIsVisible(file)).toBe(false)
+  })
 })

test/e2e/models/CodeServer.ts

@@ -203,11 +203,11 @@ export class CodeServerPage {
   }
 
   /**
-   * Navigate to code-server.
+   * Navigate to a code-server endpoint.  By default go to the root.
    */
-  async navigate() {
-    const address = await this.codeServer.address()
-    await this.page.goto(address, { waitUntil: "networkidle" })
+  async navigate(path: string = "/") {
+    const to = new URL(path, await this.codeServer.address())
+    await this.page.goto(to.toString(), { waitUntil: "networkidle" })
   }
 
   /**
@@ -308,6 +308,13 @@ export class CodeServerPage {
     return this.page.waitForSelector(`.tab :text("${path.basename(file)}")`)
   }
 
+  /**
+   * See if the specified tab is open.
+   */
+  async tabIsVisible(file: string): Promise<void> {
+    return this.page.isVisible(`.tab :text("${path.basename(file)}")`)
+  }
+
   /**
    * Navigate to the command palette via menus then execute a command by typing
    * it then clicking the match from the results.
@@ -426,8 +433,8 @@ export class CodeServerPage {
    *
    * It is recommended to run setup before using this model in any tests.
    */
-  async setup(authenticated: boolean) {
-    await this.navigate()
+  async setup(authenticated: boolean, endpoint = "/") {
+    await this.navigate(endpoint)
     // If we aren't authenticated we'll see a login page so we can't wait until
     // the editor is ready.
     if (authenticated) {