OP-SQLite async iterator tests

.github/workflows/test-simulators.yaml

@@ -17,7 +17,7 @@ jobs:
         id: check
         run: |
           git fetch origin ${{ github.base_ref }}
-          if git diff --quiet origin/${{ github.base_ref }} -- packages/common packages/powersync-op-sqlite; then
+          if git diff --quiet origin/${{ github.base_ref }} -- packages/common packages/powersync-op-sqlite tools/powersynctests; then
             echo "should_run=false" >> $GITHUB_OUTPUT
           else
             echo "should_run=true" >> $GITHUB_OUTPUT

tools/powersynctests/babel.config.js

@@ -1,14 +1,15 @@
 module.exports = {
   presets: ['module:@react-native/babel-preset'],
   plugins: [
+    '@babel/plugin-transform-async-generator-functions',
     '@babel/plugin-transform-class-static-block',
     [
       'module-resolver',
       {
         alias: {
-          stream: 'stream-browserify',
-        },
-      },
-    ],
-  ],
+          stream: 'stream-browserify'
+        }
+      }
+    ]
+  ]
 };

tools/powersynctests/ios/Podfile.lock

@@ -8,7 +8,7 @@ PODS:
   - hermes-engine (0.78.0):
     - hermes-engine/Pre-built (= 0.78.0)
   - hermes-engine/Pre-built (0.78.0)
-  - op-sqlite (11.4.9):
+  - op-sqlite (11.4.8):
     - DoubleConversion
     - glog
     - hermes-engine
@@ -31,7 +31,7 @@ PODS:
     - ReactCommon/turbomodule/bridging
     - ReactCommon/turbomodule/core
     - Yoga
-  - powersync-op-sqlite (0.5.4):
+  - powersync-op-sqlite (0.6.0):
     - DoubleConversion
     - glog
     - hermes-engine
@@ -1829,8 +1829,8 @@ SPEC CHECKSUMS:
   fmt: a40bb5bd0294ea969aaaba240a927bd33d878cdd
   glog: eb93e2f488219332457c3c4eafd2738ddc7e80b8
   hermes-engine: b417d2b2aee3b89b58e63e23a51e02be91dc876d
-  op-sqlite: d07002ecca5c39575deb7c4abd9e5310da6aa07d
-  powersync-op-sqlite: ce90a0e44924deea3901d06892d2d687e6eaf0c1
+  op-sqlite: 060f3d3902e6a49657051505a9c93f2688ef4943
+  powersync-op-sqlite: f2cacb147e29212f3f76ce44f50d7cac20949a5b
   powersync-sqlite-core: ef06642c8110680fcddce8a8c0dd2696daaf672d
   RCT-Folly: 36fe2295e44b10d831836cc0d1daec5f8abcf809
   RCTDeprecation: b2eecf2d60216df56bc5e6be5f063826d3c1ee35
@@ -1897,4 +1897,4 @@ SPEC CHECKSUMS:
 
 PODFILE CHECKSUM: a15b54e8d191759ce7fcccb262b8753851ec9fde
 
-COCOAPODS: 1.15.2
+COCOAPODS: 1.16.2

tools/powersynctests/package.json

@@ -9,6 +9,7 @@
     "start": "react-native start"
   },
   "dependencies": {
+    "@azure/core-asynciterator-polyfill": "^1.0.2",
     "@op-engineering/op-sqlite": "^11.4.8",
     "@powersync/common": "workspace:*",
     "@powersync/op-sqlite": "workspace:*",
@@ -30,6 +31,7 @@
   },
   "devDependencies": {
     "@babel/core": "^7.25.2",
+    "@babel/plugin-transform-async-generator-functions": "^7.27.1",
     "@babel/plugin-transform-class-static-block": "^7.26.0",
     "@babel/preset-env": "^7.25.3",
     "@babel/runtime": "^7.25.0",

tools/powersynctests/src/App.tsx

@@ -4,7 +4,7 @@
  *
  * @format
  */
-
+import '@azure/core-asynciterator-polyfill';
 import React from 'react';
 import { SafeAreaView, ScrollView, StatusBar, useColorScheme } from 'react-native';
 
@@ -17,7 +17,7 @@ function App(): React.JSX.Element {
   const isDarkMode = useColorScheme() === 'dark';
 
   const backgroundStyle = {
-    backgroundColor: isDarkMode ? Colors.darker : Colors.lighter,
+    backgroundColor: isDarkMode ? Colors.darker : Colors.lighter
   };
 
   const [] = React.useState(registerBaseTests());
@@ -40,7 +40,7 @@ function App(): React.JSX.Element {
       />
       <ScrollView style={backgroundStyle}>
         {/* <PowerSyncIndicator /> */}
-        {rootSuite.suites.map(suite => (
+        {rootSuite.suites.map((suite) => (
           <SuitWidget key={suite.title} suit={suite} />
         ))}
       </ScrollView>

tools/powersynctests/src/tests/queries.test.ts

@@ -528,6 +528,49 @@ export function registerBaseTests() {
       await watched;
     });
 
+    it('Should reflect writeTransaction updates on read connections (iterator)', async () => {
+      const watched = new Promise<void>(async (resolve) => {
+        for await (const result of db.watch('SELECT COUNT(*) as count FROM users', [])) {
+          if (result.rows?.item(0).count == 1) {
+            resolve();
+          }
+        }
+      });
+
+      await db.writeTransaction(async (tx) => {
+        return createTestUser(tx);
+      });
+
+      // The watched query should have updated
+      await watched;
+    });
+
+    it('Should throw for async iterator watch errors', async () => {
+      let error: Error | undefined;
+      try {
+        // The table here does not exist, so it should throw an error
+        for await (const result of db.watch('SELECT COUNT(*) as count FROM faketable', [])) {
+        }
+      } catch (ex) {
+        error = ex as Error;
+      }
+
+      expect(error!.message).to.include('no such table: faketable');
+    });
+
+    it('Should throw for async iterator invalid query errors', async () => {
+      let error: Error | undefined;
+      try {
+        // Invalid SQL
+        for await (const result of db.watch('invalidsyntax', [])) {
+        }
+      } catch (ex) {
+        error = ex as Error;
+      }
+
+      expect(error!.message).to.include('sqlite query error');
+    });
+
     it('Should reflect writeLock updates on read connections ', async () => {
       const numberOfUsers = 1000;