Add new UI test for syntax highlighting in documents without extension

Author: urbanfly

rascal-vscode-extension/src/test/vscode-suite/dsl.test.ts

@@ -25,7 +25,7 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
-import { SideBarView, VSBrowser, WebDriver, Workbench } from 'vscode-extension-tester';
+import { InputBox, TextEditor, SideBarView, VSBrowser, WebDriver, Workbench } from 'vscode-extension-tester';
 import { Delays, IDEOperations, ignoreFails, printRascalOutputOnFailure, RascalREPL, sleep, TestWorkspace } from './utils';
 
 import { expect } from 'chai';
@@ -75,6 +75,13 @@ parameterizedDescribe(function (errorRecovery: boolean) {
         await repl.terminate();
     }
 
+    async function waitForPico() {
+        const isPicoLoading = ide.statusContains("Pico");
+        // we might miss this event, but we wait for it to show up
+        await ignoreFails(driver.wait(isPicoLoading, Delays.normal, "Pico parser generator should have started"));
+        // now wait for the Pico parser generator to disappear
+        await driver.wait(async () => !(await isPicoLoading()), Delays.verySlow, "Pico parser generator should have finished", 100);
+    }
 
     before(async () => {
         browser = VSBrowser.instance;
@@ -103,14 +110,10 @@ parameterizedDescribe(function (errorRecovery: boolean) {
         await fs.writeFile(TestWorkspace.picoFile, picoFileBackup);
     });
 
-    it("have highlighting and parse errors", async function () {
+    it("has highlighting and parse errors", async function () {
         await ignoreFails(new Workbench().getEditorView().closeAllEditors());
         const editor = await ide.openModule(TestWorkspace.picoFile);
-        const isPicoLoading = ide.statusContains("Pico");
-        // we might miss this event, but we wait for it to show up
-        await ignoreFails(driver.wait(isPicoLoading, Delays.normal, "Pico parser generator should have started"));
-        // now wait for the Pico parser generator to disappear
-        await driver.wait(async () => !(await isPicoLoading()), Delays.verySlow, "Pico parser generator should have finished", 100);
+        await waitForPico();
         await ide.hasSyntaxHighlighting(editor, Delays.slow);
         console.log("We got syntax highlighting");
         try {
@@ -126,7 +129,7 @@ parameterizedDescribe(function (errorRecovery: boolean) {
         }
     }).retries(2);
 
-    it("have highlighting and parse errors for second extension", async function () {
+    it("has highlighting and parse errors for second extension", async function () {
         const editor = await ide.openModule(TestWorkspace.picoNewFile);
         await ide.hasSyntaxHighlighting(editor);
         try {
@@ -137,6 +140,33 @@ parameterizedDescribe(function (errorRecovery: boolean) {
         }
     });
 
+    it("has syntax highlighting in documents without extension", async function () {
+        await bench.executeCommand("workbench.action.files.newUntitledFile");
+        await bench.executeCommand("workbench.action.editor.changeLanguageMode");
+
+        const inputBox = new InputBox();
+        await inputBox.setText("parametric-rascalmpl");
+        await inputBox.confirm();
+
+        const file = "Untitled-1";
+        const editor = await driver.wait(async () => {
+            const result = await ignoreFails(new Workbench().getEditorView().openEditor(file)) as TextEditor;
+            if (result && await ignoreFails(result.getTitle()) === file) {
+                return result;
+            }
+            return undefined;
+        }, Delays.normal, "Could not open file");
+        expect(editor).to.not.be.undefined;
+
+        await editor!.setText(`begin
+  declare
+     a : natural;
+  a := 2;
+end
+`, true);
+        await ide.hasSyntaxHighlighting(editor!, Delays.slow);
+    }).retries(2);
+
     it("error recovery works", async function () {
         if (!errorRecovery) { this.skip(); }
         const editor = await ide.openModule(TestWorkspace.picoNewFile);