Added tests.

Author: Chriztiaan

packages/dev-adapter/README.md

@@ -17,8 +17,6 @@ powersync = new PowerSyncDatabase({
 });
 ```
 
-````
-
 ## Persister examples
 
 ### Expo
@@ -72,7 +70,7 @@ const createSQLJSPersister = (dbFilename: string): SQLJSPersister => {
     }
   };
 };
-````
+```
 
 Which can then be used here
 

packages/dev-adapter/tests/setup/db.ts

@@ -0,0 +1,32 @@
+import { AbstractPowerSyncDatabase, column, PowerSyncDatabase, Schema, Table } from '@powersync/web';
+import { SQLJSOpenFactory } from '../../src/SQLJSAdapter';
+
+const AppSchema = new Schema({
+  users: new Table({
+    name: column.text,
+    age: column.integer,
+    networth: column.real
+  }),
+  t1: new Table({
+    a: column.integer,
+    b: column.integer,
+    c: column.text
+  })
+});
+
+export const getPowerSyncDb = () => {
+  const database = new PowerSyncDatabase({
+    database: new SQLJSOpenFactory({
+      dbFilename: 'powersync-test.db',
+      persister: {
+        // in-memory db
+        readFile: async () => null,
+        writeFile: async () => {}
+      }
+    }),
+
+    schema: AppSchema
+  });
+
+  return database;
+};