Unittest Language Server spawning

Fixes #422

Author: gnikit

.github/workflows/main.yaml

@@ -1,11 +1,12 @@
 name: CI
 on: [push, pull_request]
 jobs:
-  grammar:
+  tests:
     runs-on: ubuntu-latest
     strategy:
       matrix:
         node-version: [14.x, 16.x]
+      fail-fast: false
     steps:
       - uses: actions/checkout@v3
       - name: Use Node.js ${{ matrix.node-version }}

.vscode/launch.json

@@ -18,6 +18,10 @@
       "request": "launch",
       "runtimeExecutable": "${execPath}",
       "args": [
+        "${workspaceFolder}/test/resources",
+        "--install-extension",
+        "ms-vscode.cpptools",
+        "--disable-extensions",
         "--extensionDevelopmentPath=${workspaceFolder}",
         "--extensionTestsPath=${workspaceFolder}/out/test"
       ],

.vscode/settings.json

@@ -57,7 +57,6 @@
   "fortran.formatting.findentArgs": ["-Cn", "--align-paren=1"],
   // Fortran-Language-Server specific options
   "fortran.fortls.incrementalSync": true,
-  "fortran.fortls.preserveKeywordOrder": true,
   // Other Fortran options
   "fortran.preferredCase": "lowercase"
 }

CHANGELOG.md

@@ -11,6 +11,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Added
 
+- Added unittest for `fortls` spawning and integration, checks for initialization values
+  ([#422](https://github.com/fortran-lang/vscode-fortran-support/issues/422))
 - Added warning notifications for extensions that interfere with Modern Fortran
   ([#458](https://github.com/fortran-lang/vscode-fortran-support/issues/458))
 - Added single file and multiple workspace folder support for the Language Server

src/extension.ts

@@ -87,6 +87,7 @@ export async function activate(context: vscode.ExtensionContext) {
       },
     })
   );
+  return context;
 }
 
 function detectDeprecatedOptions() {

src/lib/helper.ts

@@ -78,6 +78,8 @@ const saveKeywordToJson = keyword => {
   });
 };
 
+export const delay = (ms: number) => new Promise(res => setTimeout(res, ms));
+
 export function isUri(input: any): input is vscode.Uri {
   return input && input instanceof vscode.Uri;
 }

test/lsp-client.test.ts

@@ -0,0 +1,50 @@
+import * as vscode from 'vscode';
+import * as path from 'path';
+import { strictEqual } from 'assert';
+import { spawnSync } from 'child_process';
+import { LoggingService } from '../src/services/logging-service';
+import { FortlsClient } from '../src/lsp/client';
+import { delay } from '../src/lib/helper';
+
+suite('Language Server integration tests', () => {
+  let doc: vscode.TextDocument;
+  const server = new FortlsClient(new LoggingService());
+  const fileUri = vscode.Uri.file(
+    path.resolve(__dirname, '../../test/resources/function_subroutine_definitions.f90')
+  );
+
+  suiteSetup(async function (): Promise<void> {
+    console.log('Installing fortls Language Server');
+    spawnSync('pip', ['install', '--user', '--upgrade', 'fortls']);
+    await server.activate();
+  });
+
+  test('Launch fortls & Check Initialization Response', async () => {
+    await delay(3000); // wait for server to initialize
+    doc = await vscode.workspace.openTextDocument(fileUri);
+    await vscode.window.showTextDocument(doc);
+
+    const ref = {
+      capabilities: {
+        completionProvider: {
+          resolveProvider: false,
+          triggerCharacters: ['%'],
+        },
+        definitionProvider: true,
+        documentSymbolProvider: true,
+        referencesProvider: true,
+        hoverProvider: true,
+        implementationProvider: true,
+        renameProvider: true,
+        workspaceSymbolProvider: true,
+        textDocumentSync: 2,
+        signatureHelpProvider: {
+          triggerCharacters: ['(', ','],
+        },
+        codeActionProvider: true,
+      },
+    };
+    const res = server['client'].initializeResult;
+    strictEqual(JSON.stringify(ref), JSON.stringify(res));
+  });
+});

test/resources/.vscode/launch.json

@@ -0,0 +1,37 @@
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "Launch current F90",
+      "type": "cppdbg",
+      "request": "launch",
+      "program": "${fileDirname}/${fileBasenameNoExtension}",
+      "cwd": "${fileDirname}",
+      "stopAtEntry": false,
+      "environment": [],
+      "externalConsole": false,
+      "MIMode": "gdb",
+      "setupCommands": [
+        {
+          "description": "Enable pretty-printing for gdb",
+          "text": "-enable-pretty-printing",
+          "ignoreFailures": true
+        },
+        {
+          "description": "Set Disassembly Flavor to Intel",
+          "text": "-gdb-set disassembly-flavor intel",
+          "ignoreFailures": true
+        }
+      ],
+      "preLaunchTask": "compile",
+      "logging": {
+        "engineLogging": false,
+        "moduleLoad": true,
+        "exceptions": true
+      }
+    }
+  ]
+}

test/resources/.vscode/tasks.json

@@ -0,0 +1,24 @@
+{
+  // See https://go.microsoft.com/fwlink/?LinkId=733558
+  // for the documentation about the tasks.json format
+  "version": "2.0.0",
+  "tasks": [
+    {
+      "label": "compile",
+      "type": "shell",
+      "command": "gfortran",
+      "args": ["-Wall", "-g", "${file}", "-o${fileDirname}/${fileBasenameNoExtension}"],
+      "presentation": {
+        "echo": true,
+        "reveal": "always",
+        "focus": false,
+        "panel": "shared"
+      },
+      "group": {
+        "kind": "build",
+        "isDefault": true
+      },
+      "problemMatcher": "$gcc"
+    }
+  ]
+}

test/runTest.ts

@@ -7,12 +7,18 @@ async function main() {
     // The folder containing the Extension Manifest package.json
     // Passed to `--extensionDevelopmentPath`
     const extensionDevelopmentPath = path.resolve(__dirname, '../../');
+    const workspacePath = path.resolve(__dirname, '../../test/resources/');
 
     // The path to the extension test runner script
     // Passed to --extensionTestsPath
     const extensionTestsPath = path.resolve(__dirname, './index');
 
-    const launchArgs = ['--disable-extensions', '--install-extension', 'ms-vscode.cpptools'];
+    const launchArgs = [
+      workspacePath,
+      '--disable-extensions',
+      '--install-extension',
+      'ms-vscode.cpptools',
+    ];
     // Download VS Code, unzip it and run the integration test
     await runTests({
       launchArgs,