Make web integration tests functional

Author: simolus3

sqlite3_web/lib/src/client.dart

@@ -281,7 +281,9 @@ final class DatabaseClient implements WebSqlite {
 
       if (result.canUseOpfs) {
         available.add((StorageMode.opfs, AccessMode.throughSharedWorker));
-      } else {
+      } else if (result.sharedCanSpawnDedicated) {
+        // Only report OPFS as unavailable if we can spawn dedicated workers.
+        // If we can't, it's known that we can't use OPFS.
         _missingFeatures.add(MissingBrowserFeature.fileSystemAccess);
       }
 

sqlite3_web/test/integration_test.dart

@@ -72,7 +72,7 @@ void main() {
   for (final browser in Browser.values) {
     group(browser.name, () {
       late Process driverProcess;
-      late DriftWebDriver driver;
+      late TestWebDriver driver;
 
       setUpAll(() async => driverProcess = await browser.spawnDriver());
       tearDownAll(() => driverProcess.kill());
@@ -83,8 +83,19 @@ void main() {
           uri: browser.driverUri,
         );
 
-        driver = DriftWebDriver(server, rawDriver);
+        driver = TestWebDriver(server, rawDriver);
         await driver.driver.get('http://localhost:8080/');
+
+        while (true) {
+          try {
+            // This element is created after main() has completed, make sure
+            // all the callbacks have been installed.
+            await driver.driver.findElement(By.id('ready'));
+            break;
+          } on NoSuchElementException {
+            continue;
+          }
+        }
       });
 
       tearDown(() => driver.driver.quit());
@@ -95,6 +106,16 @@ void main() {
         expect(result.missingFeatures, browser.missingFeatures);
         expect(result.impls, browser.availableImplementations);
       });
+
+      for (final (storage, access) in browser.availableImplementations) {
+        test('$storage through $access', () async {
+          await driver.openDatabase((storage, access));
+          await driver.execute('CREATE TABLE foo (bar TEXT);');
+          final event = driver.waitForUpdate();
+          await driver.execute("INSERT INTO foo (bar) VALUES ('hello');");
+          await event;
+        });
+      }
     });
   }
 }

sqlite3_web/tool/server.dart

@@ -98,11 +98,11 @@ class TestAssetServer {
   }
 }
 
-class DriftWebDriver {
+class TestWebDriver {
   final TestAssetServer server;
   final WebDriver driver;
 
-  DriftWebDriver(this.server, this.driver);
+  TestWebDriver(this.server, this.driver);
 
   Future<
       ({

sqlite3_web/web/main.dart

@@ -33,6 +33,8 @@ void main() {
     print('selected storage: ${database.storage} through ${database.access}');
     print('missing features: ${database.features.missingFeatures}');
   });
+
+  document.body!.children.add(DivElement()..id = 'ready');
 }
 
 void _addCallbackForWebDriver(
@@ -105,6 +107,6 @@ Future<JSAny?> _open(String? implementationName) async {
 }
 
 Future<JSAny?> _exec(String? sql) async {
-  database!.execute(sql!);
+  await database!.execute(sql!);
   return null;
 }