Add a failing test

I wonder if this will even run?

Author: davidwengier

.vscode/launch.json

@@ -43,6 +43,34 @@
             ],
             "preLaunchTask": "buildDev"
         },
+        {
+            "name": "Launch Current File BasicRazorApp Integration Tests",
+            "type": "extensionHost",
+            "request": "launch",
+            "runtimeExecutable": "${execPath}",
+            "args": [
+                // Create a temp profile that has no extensions / user settings.
+                // This allows us to only have the C# extension + the dotnet runtime installer extension dependency.
+                "--profile-temp",
+                "${workspaceRoot}/test/integrationTests/testAssets/BasicRazorApp2_1/.vscode/lsp_tools_host_BasicRazorApp2_1.code-workspace",
+                "--extensionDevelopmentPath=${workspaceRoot}",
+                "--extensionTestsPath=${workspaceRoot}/out/test/integrationTests",
+            ],
+            "env": {
+                "CODE_EXTENSIONS_PATH": "${workspaceRoot}",
+                "TEST_FILE_FILTER": "${file}"
+            },
+            "sourceMaps": true,
+            "outFiles": [
+              "${workspaceRoot}/dist/*.js",
+              "${workspaceRoot}/out/test/**/*.js"
+            ],
+            "resolveSourceMapLocations": [
+                "${workspaceFolder}/**",
+                "!**/node_modules/**"
+            ],
+            "preLaunchTask": "buildDev"
+        },
         {
             "type": "node",
             "request": "launch",

test/integrationTests/razorFormatting.integration.test.ts

@@ -0,0 +1,41 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as path from 'path';
+import * as vscode from 'vscode';
+import * as jestLib from '@jest/globals';
+import testAssetWorkspace from './testAssets/testAssetWorkspace';
+import * as integrationHelpers from './integrationHelpers';
+
+jestLib.describe(`Razor Formatting ${testAssetWorkspace.description}`, function () {
+    jestLib.beforeAll(async function () {
+        const editorConfig = vscode.workspace.getConfiguration('razor');
+        await editorConfig.update('format.enable', true);
+
+        await integrationHelpers.openFileInWorkspaceAsync(path.join('Pages', 'BadlyFormatted.razor'));
+        await integrationHelpers.activateCSharpExtension();
+    });
+
+    jestLib.afterAll(async () => {
+        await testAssetWorkspace.cleanupWorkspace();
+    });
+
+    jestLib.test('Document formatted correctly', async () => {
+        if (!integrationHelpers.isRazorWorkspace(vscode.workspace)) {
+            return;
+        }
+
+        const activeDocument = vscode.window.activeTextEditor?.document.uri;
+        if (!activeDocument) {
+            throw new Error('No active document');
+        }
+        const edits: vscode.TextEdit[] = await vscode.commands.executeCommand(
+            'vscode.executeFormatDocumentProvider',
+            activeDocument
+        );
+
+        jestLib.expect(edits).toHaveLength(6);
+    });
+});

test/integrationTests/testAssets/BasicRazorApp2_1/.vscode/lsp_tools_host_BasicRazorApp2_1.code-workspace

@@ -0,0 +1,14 @@
+{
+    "folders": [
+        {
+            "path": ".."
+        }
+    ],
+    "settings": {
+        "dotnet.defaultSolution": "BasicRazorApp2_1.sln",
+        "dotnet.server.trace": "Trace",
+        "dotnet.server.useOmnisharp": false,
+        "omnisharp.enableLspDriver": false,
+        "razor.trace": "Verbose"
+    }
+}

test/integrationTests/testAssets/BasicRazorApp2_1/BasicRazorApp2_1.sln

@@ -0,0 +1,22 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.0.31903.59
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BasicRazorApp2_1", "BasicRazorApp2_1.csproj", "{6311A302-9D48-4375-A137-85FF05AED7CF}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{6311A302-9D48-4375-A137-85FF05AED7CF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{6311A302-9D48-4375-A137-85FF05AED7CF}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{6311A302-9D48-4375-A137-85FF05AED7CF}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{6311A302-9D48-4375-A137-85FF05AED7CF}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+EndGlobal