Add explicit date format tests

Author: simolus3

modules/module-mongodb/test/src/mongo_test.test.ts

@@ -1,5 +1,11 @@
 import { mongo } from '@powersync/lib-service-mongodb';
-import { applyRowContext, CompatibilityContext, SqliteInputRow, SqlSyncRules } from '@powersync/service-sync-rules';
+import {
+  applyRowContext,
+  CompatibilityContext,
+  CompatibilityLevel,
+  SqliteInputRow,
+  SqlSyncRules
+} from '@powersync/service-sync-rules';
 import { describe, expect, test } from 'vitest';
 
 import { MongoRouteAPIAdapter } from '@module/api/MongoRouteAPIAdapter.js';
@@ -526,6 +532,38 @@ bucket_definitions:
       errors: []
     });
   });
+
+  test('date format', async () => {
+    const { db, client } = await connectMongoData();
+    const collection = db.collection('test_data');
+    try {
+      await setupTable(db);
+      await collection.insertOne({
+        fraction: new Date('2023-03-06 15:47:01.123+02'),
+        noFraction: new Date('2023-03-06 15:47:01+02')
+      });
+
+      const rawResults = await db
+        .collection('test_data')
+        .find({}, { sort: { _id: 1 } })
+        .toArray();
+      const [row] = [...ChangeStream.getQueryData(rawResults)];
+
+      const oldFormat = applyRowContext(row, CompatibilityContext.FULL_BACKWARDS_COMPATIBILITY);
+      expect(oldFormat).toMatchObject({
+        fraction: '2023-03-06 13:47:01.123Z',
+        noFraction: '2023-03-06 13:47:01.000Z'
+      });
+
+      const newFormat = applyRowContext(row, new CompatibilityContext(CompatibilityLevel.SYNC_STREAMS));
+      expect(newFormat).toMatchObject({
+        fraction: '2023-03-06T13:47:01.123Z',
+        noFraction: '2023-03-06T13:47:01.000Z'
+      });
+    } finally {
+      await client.close();
+    }
+  });
 });
 
 /**

modules/module-postgres/test/src/pg_test.test.ts

@@ -5,7 +5,8 @@ import {
   CompatibilityContext,
   SqliteInputRow,
   DateTimeValue,
-  TimeValue
+  TimeValue,
+  CompatibilityLevel
 } from '@powersync/service-sync-rules';
 import { describe, expect, test } from 'vitest';
 import { clearTestDb, connectPgPool, connectPgWire, TEST_URI } from './util.js';
@@ -436,6 +437,39 @@ VALUES(10, ARRAY['null']::TEXT[]);
     // const schema = await api.getConnectionsSchema(db);
     // expect(schema).toMatchSnapshot();
   });
+
+  test('date formats', async () => {
+    const db = await connectPgWire();
+    try {
+      await setupTable(db);
+
+      await db.query(`
+INSERT INTO test_data(id, time, timestamp, timestamptz) VALUES (1, '17:42:01.12', '2023-03-06 15:47:12.4', '2023-03-06 15:47+02');
+`);
+
+      const [row] = [
+        ...WalStream.getQueryData(
+          pgwire.pgwireRows(await db.query(`SELECT time, timestamp, timestamptz FROM test_data`))
+        )
+      ];
+
+      const oldFormat = applyRowContext(row, CompatibilityContext.FULL_BACKWARDS_COMPATIBILITY);
+      expect(oldFormat).toMatchObject({
+        time: '17:42:01.12',
+        timestamp: '2023-03-06 15:47:12.4',
+        timestamptz: '2023-03-06 13:47:00Z'
+      });
+
+      const newFormat = applyRowContext(row, new CompatibilityContext(CompatibilityLevel.SYNC_STREAMS));
+      expect(newFormat).toMatchObject({
+        time: '17:42:01.120000',
+        timestamp: '2023-03-06T15:47:12.400000',
+        timestamptz: '2023-03-06T13:47:00.000000Z'
+      });
+    } finally {
+      await db.end();
+    }
+  });
 });
 
 /**