Fix path regressions and cover with tests

.vsts-ci/templates/ci-general.yml

@@ -46,6 +46,7 @@ steps:
   inputs:
     targetType: inline
     script: |
+      Get-Module -ListAvailable Pester
       Install-Module InvokeBuild -Scope CurrentUser -Force
       Invoke-Build
       Write-Host "##vso[task.setvariable variable=vsixPath]$(Resolve-Path powershell-*.vsix)"

src/features/Examples.ts

@@ -2,19 +2,20 @@
 // Licensed under the MIT License.
 
 import path = require("path");
+import utils = require("../utils")
 import vscode = require("vscode");
 
 export class ExamplesFeature implements vscode.Disposable {
     private command: vscode.Disposable;
-    private examplesPath: string;
+    private examplesPath: vscode.Uri;
 
     constructor() {
-        this.examplesPath = path.resolve(__dirname, "../../examples");
+        this.examplesPath = vscode.Uri.file(path.resolve(__dirname, "../examples"));
         this.command = vscode.commands.registerCommand("PowerShell.OpenExamplesFolder", () => {
-            vscode.commands.executeCommand(
-                "vscode.openFolder",
-                vscode.Uri.file(this.examplesPath),
-                true);
+            vscode.commands.executeCommand("vscode.openFolder", this.examplesPath, true);
+            // Return existence of the path for testing. The `vscode.openFolder`
+            // command should do this, but doesn't (yet).
+            return utils.fileExists(this.examplesPath);
         });
     }
 

src/features/PesterTests.ts

@@ -18,48 +18,51 @@ export class PesterTestsFeature implements vscode.Disposable {
     private invokePesterStubScriptPath: string;
 
     constructor(private sessionManager: SessionManager) {
-        this.invokePesterStubScriptPath = path.resolve(__dirname, "../../modules/PowerShellEditorServices/InvokePesterStub.ps1");
+        this.invokePesterStubScriptPath = path.resolve(__dirname, "../modules/PowerShellEditorServices/InvokePesterStub.ps1");
 
         // File context-menu command - Run Pester Tests
         this.command = vscode.commands.registerCommand(
             "PowerShell.RunPesterTestsFromFile",
             (fileUri) => {
-                this.launchAllTestsInActiveEditor(LaunchType.Run, fileUri);
+                return this.launchAllTestsInActiveEditor(LaunchType.Run, fileUri);
             });
         // File context-menu command - Debug Pester Tests
         this.command = vscode.commands.registerCommand(
             "PowerShell.DebugPesterTestsFromFile",
             (fileUri) => {
-                this.launchAllTestsInActiveEditor(LaunchType.Debug, fileUri);
+                return this.launchAllTestsInActiveEditor(LaunchType.Debug, fileUri);
             });
         // This command is provided for usage by PowerShellEditorServices (PSES) only
         this.command = vscode.commands.registerCommand(
             "PowerShell.RunPesterTests",
             (uriString, runInDebugger, describeBlockName?, describeBlockLineNumber?, outputPath?) => {
-                this.launchTests(uriString, runInDebugger, describeBlockName, describeBlockLineNumber, outputPath);
+                return this.launchTests(uriString, runInDebugger, describeBlockName, describeBlockLineNumber, outputPath);
             });
     }
 
     public dispose() {
         this.command.dispose();
     }
 
-    private launchAllTestsInActiveEditor(launchType: LaunchType, fileUri: vscode.Uri) {
+    private async launchAllTestsInActiveEditor(
+        launchType: LaunchType,
+        fileUri: vscode.Uri): Promise<boolean> {
+
         const uriString = (fileUri || vscode.window.activeTextEditor.document.uri).toString();
         const launchConfig = this.createLaunchConfig(uriString, launchType);
-        this.launch(launchConfig);
+        return this.launch(launchConfig);
     }
 
     private async launchTests(
         uriString: string,
         runInDebugger: boolean,
         describeBlockName?: string,
         describeBlockLineNumber?: number,
-        outputPath?: string) {
+        outputPath?: string): Promise<boolean> {
 
         const launchType = runInDebugger ? LaunchType.Debug : LaunchType.Run;
         const launchConfig = this.createLaunchConfig(uriString, launchType, describeBlockName, describeBlockLineNumber, outputPath);
-        this.launch(launchConfig);
+        return this.launch(launchConfig);
     }
 
     private createLaunchConfig(
@@ -126,9 +129,9 @@ export class PesterTestsFeature implements vscode.Disposable {
         return launchConfig;
     }
 
-    private launch(launchConfig) {
+    private async launch(launchConfig): Promise<boolean> {
         // Create or show the interactive console
-        // TODO #367: Check if "newSession" mode is configured
+        // TODO: #367 Check if "newSession" mode is configured
         vscode.commands.executeCommand("PowerShell.ShowSessionConsole", true);
 
         // Write out temporary debug session file
@@ -137,6 +140,10 @@ export class PesterTestsFeature implements vscode.Disposable {
             this.sessionManager.getSessionDetails());
 
         // TODO: Update to handle multiple root workspaces.
-        vscode.debug.startDebugging(vscode.workspace.workspaceFolders[0], launchConfig);
+        //
+        // Ensure the necessary script exists (for testing). The debugger will
+        // start regardless, but we also pass its success along.
+        return utils.fileExists(this.invokePesterStubScriptPath)
+            && vscode.debug.startDebugging(vscode.workspace.workspaceFolders[0], launchConfig);
     }
 }

src/settings.ts

@@ -157,6 +157,8 @@ export function load(): ISettings {
 
     const defaultDeveloperSettings: IDeveloperSettings = {
         featureFlags: [],
+        // From `<root>/out/main.js` we go to the directory before <root> and
+        // then into the other repo.
         bundledModulesPath: "../../PowerShellEditorServices/module",
         editorServicesLogLevel: "Normal",
         editorServicesWaitForDebugger: false,
@@ -234,7 +236,7 @@ export function load(): ISettings {
         promptToUpdatePackageManagement:
             configuration.get<boolean>("promptToUpdatePackageManagement", true),
         bundledModulesPath:
-            "../modules",
+            "../modules", // Because the extension is always at `<root>/out/main.js`
         useX86Host:
             configuration.get<boolean>("useX86Host", false),
         enableProfileLoading:

src/utils.ts

@@ -6,12 +6,14 @@
 import fs = require("fs");
 import os = require("os");
 import path = require("path");
+import vscode = require("vscode");
 
 export const PowerShellLanguageId = "powershell";
 
-export function ensurePathExists(targetPath: string) {
+export function ensurePathExists(targetPath: string): void {
     // Ensure that the path exists
     try {
+        // TODO: Use vscode.workspace.fs
         fs.mkdirSync(targetPath);
     } catch (e) {
         // If the exception isn't to indicate that the folder exists already, rethrow it.
@@ -21,6 +23,23 @@ export function ensurePathExists(targetPath: string) {
     }
 }
 
+// Check that the file exists in an asynchronous manner that relies solely on the VS Code API, not Node's fs library.
+export async function fileExists(targetPath: string | vscode.Uri): Promise<boolean> {
+    try {
+            await vscode.workspace.fs.stat(
+                targetPath instanceof vscode.Uri
+                    ? targetPath
+                    : vscode.Uri.file(targetPath));
+        return true;
+    } catch (e) {
+        if (e instanceof vscode.FileSystemError.FileNotFound) {
+            return false;
+        }
+        throw e;
+    }
+
+}
+
 export function getPipePath(pipeName: string) {
     if (os.platform() === "win32") {
         return "\\\\.\\pipe\\" + pipeName;
@@ -45,7 +64,7 @@ export interface IEditorServicesSessionDetails {
 
 export type IReadSessionFileCallback = (details: IEditorServicesSessionDetails) => void;
 
-const sessionsFolder = path.resolve(__dirname, "..", "..", "sessions/");
+const sessionsFolder = path.resolve(__dirname, "../sessions");
 const sessionFilePathPrefix = path.resolve(sessionsFolder, "PSES-VSCode-" + process.env.VSCODE_PID);
 
 // Create the sessions path if it doesn't exist already

test/core/paths.test.ts

@@ -0,0 +1,28 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+
+import * as assert from "assert";
+import * as fs from "fs";
+import * as path from "path";
+import * as vscode from "vscode";
+import { suiteSetup } from "mocha";
+import utils = require("../utils");
+
+suite("Path assumptions", () => {
+    suiteSetup(utils.ensureExtensionIsActivated);
+
+    // TODO: This is skipped because it intereferes with other tests. Either
+    // need to find a way to close the opened folder via a Code API, or find
+    // another way to test this.
+    test.skip("The examples folder can be opened (and exists)", async () => {
+        assert(await vscode.commands.executeCommand("PowerShell.OpenExamplesFolder"));
+    });
+
+    test("The session folder is created in the right place", async () => {
+        assert(fs.existsSync(path.resolve(utils.rootPath, "sessions")));
+    });
+
+    test("The logs folder is created in the right place", async () => {
+        assert(fs.existsSync(path.resolve(utils.rootPath, "logs")));
+    });
+});

test/features/CustomViews.test.ts

@@ -70,15 +70,15 @@ hello
                     content: "console.log('asdf');",
                 },
                 {
-                    fileName: "../../testCustomViews.js",
+                    fileName: "../testCustomViews.js",
                     content: "console.log('asdf');",
                 },
             ],
             cssFiles: [],
             expectedHtmlString: `<html><head></head><body>
 hello
 <script src="${convertToVSCodeResourceScheme(path.join(__dirname, "testCustomViews.js"))}"></script>
-<script src="${convertToVSCodeResourceScheme(path.join(__dirname, "../../testCustomViews.js"))}"></script>
+<script src="${convertToVSCodeResourceScheme(path.join(__dirname, "../testCustomViews.js"))}"></script>
 </body></html>`,
         },
 
@@ -129,7 +129,7 @@ hello
                 styleSheetPaths: cssPaths,
             };
             try {
-                assert.equal(htmlContentView.getContent(), testCase.expectedHtmlString);
+                assert.strictEqual(htmlContentView.getContent(), testCase.expectedHtmlString);
             } finally {
                 jsPaths.forEach((jsPath) => fs.unlinkSync(vscode.Uri.parse(jsPath).fsPath));
                 cssPaths.forEach((cssPath) => fs.unlinkSync(vscode.Uri.parse(cssPath).fsPath));

test/features/ExternalApi.test.ts

@@ -2,27 +2,19 @@
 // Licensed under the MIT License.
 
 import * as assert from "assert";
-import * as vscode from "vscode";
-import { before, beforeEach, afterEach } from "mocha";
+import { suiteSetup, setup, teardown } from "mocha";
+import utils = require("../utils");
 import { IExternalPowerShellDetails, IPowerShellExtensionClient } from "../../src/features/ExternalApi";
 
-// tslint:disable-next-line: no-var-requires
-const PackageJSON: any = require("../../../package.json");
-const testExtensionId = `${PackageJSON.publisher}.${PackageJSON.name}`;
-
 suite("ExternalApi feature - Registration API", () => {
     let powerShellExtensionClient: IPowerShellExtensionClient;
-    before(async () => {
-        const powershellExtension = vscode.extensions.getExtension<IPowerShellExtensionClient>(testExtensionId);
-        if (!powershellExtension.isActive) {
-            powerShellExtensionClient = await powershellExtension.activate();
-            return;
-        }
+    suiteSetup(async () => {
+        const powershellExtension = await utils.ensureExtensionIsActivated();
         powerShellExtensionClient = powershellExtension!.exports as IPowerShellExtensionClient;
     });
 
     test("It can register and unregister an extension", () => {
-        const sessionId: string = powerShellExtensionClient.registerExternalExtension(testExtensionId);
+        const sessionId: string = powerShellExtensionClient.registerExternalExtension(utils.extensionId);
         assert.notStrictEqual(sessionId , "");
         assert.notStrictEqual(sessionId , null);
         assert.strictEqual(
@@ -31,7 +23,7 @@ suite("ExternalApi feature - Registration API", () => {
     });
 
     test("It can register and unregister an extension with a version", () => {
-        const sessionId: string = powerShellExtensionClient.registerExternalExtension(testExtensionId, "v2");
+        const sessionId: string = powerShellExtensionClient.registerExternalExtension(utils.extensionId, "v2");
         assert.notStrictEqual(sessionId , "");
         assert.notStrictEqual(sessionId , null);
         assert.strictEqual(
@@ -48,12 +40,12 @@ suite("ExternalApi feature - Registration API", () => {
     });
 
     test("It can't register the same extension twice", async () => {
-        const sessionId: string = powerShellExtensionClient.registerExternalExtension(testExtensionId);
+        const sessionId: string = powerShellExtensionClient.registerExternalExtension(utils.extensionId);
         try {
             assert.throws(
-                () => powerShellExtensionClient.registerExternalExtension(testExtensionId),
+                () => powerShellExtensionClient.registerExternalExtension(utils.extensionId),
                 {
-                    message: `The extension '${testExtensionId}' is already registered.`
+                    message: `The extension '${utils.extensionId}' is already registered.`
                 });
         } finally {
             powerShellExtensionClient.unregisterExternalExtension(sessionId);
@@ -73,20 +65,16 @@ suite("ExternalApi feature - Other APIs", () => {
     let sessionId: string;
     let powerShellExtensionClient: IPowerShellExtensionClient;
 
-    before(async () => {
-        const powershellExtension = vscode.extensions.getExtension<IPowerShellExtensionClient>(testExtensionId);
-        if (!powershellExtension.isActive) {
-            powerShellExtensionClient = await powershellExtension.activate();
-            return;
-        }
+    suiteSetup(async () => {
+        const powershellExtension = await utils.ensureExtensionIsActivated();
         powerShellExtensionClient = powershellExtension!.exports as IPowerShellExtensionClient;
     });
 
-    beforeEach(() => {
-        sessionId = powerShellExtensionClient.registerExternalExtension(testExtensionId);
+    setup(() => {
+        sessionId = powerShellExtensionClient.registerExternalExtension(utils.extensionId);
     });
 
-    afterEach(() => {
+    teardown(() => {
         powerShellExtensionClient.unregisterExternalExtension(sessionId);
     });
 
@@ -105,6 +93,6 @@ suite("ExternalApi feature - Other APIs", () => {
         assert.notStrictEqual(versionDetails.version, "");
         assert.notStrictEqual(versionDetails.version, null);
 
-        // Start up can take some time... so set the time out to 30s
+        // Start up can take some time...so set the timeout to 30 seconds.
     }).timeout(30000);
 });