test(lsp): added integration test for path resolution

Author: gnikit

test/fortran/.vscode/settings.json

@@ -7,6 +7,7 @@
     "DEBUG": "1",
     "VAL": ""
   },
+  "fortran.fortls.path": "fortls",
   "fortran.fortls.disableAutoupdate": true,
   "fortran.fortls.preprocessor.definitions": {
     "HAVE_ZOLTAN": "",

test/unitTest/client.test.ts

@@ -0,0 +1,43 @@
+import * as vscode from 'vscode';
+import * as path from 'path';
+import { strictEqual } from 'assert';
+import { FortlsClient } from '../../src/lsp/client';
+import { Logger, LogLevel } from '../../src/services/logging';
+import { EXTENSION_ID } from '../../src/lib/tools';
+
+const logger = new Logger(
+  vscode.window.createOutputChannel('Modern Fortran', 'log'),
+  LogLevel.DEBUG
+);
+
+suite('Language Server integration tests', () => {
+  const server = new FortlsClient(logger);
+  const fileUri = vscode.Uri.file(path.resolve(__dirname, '../../../test/fortran/sample.f90'));
+  const config = vscode.workspace.getConfiguration(EXTENSION_ID);
+  const oldVal = config.get<string>('fortls.path');
+  let doc: vscode.TextDocument;
+
+  suiteSetup(async () => {
+    await config.update('fortls.path', './venv/bin/fortls', false);
+    doc = await vscode.workspace.openTextDocument(fileUri);
+  });
+
+  test('Local path resolution (Document URI)', async () => {
+    const ls = await server['fortlsPath'](doc);
+    const root = path.resolve(__dirname, '../../../test/fortran/');
+    const ref = path.resolve(root, './venv/bin/fortls');
+    console.log(`Reference: ${ref}`);
+    strictEqual(ls, ref);
+  });
+
+  test('Local path resolution (Document missing workspaceFolders[0])', async () => {
+    const ls = await server['fortlsPath']();
+    const root = path.resolve(__dirname, '../../../test/fortran/');
+    const ref = path.resolve(root, './venv/bin/fortls');
+    strictEqual(ls, ref);
+  });
+
+  suiteTeardown(async () => {
+    await config.update('fortls.path', oldVal, false);
+  });
+});