flutter unit/integration tests

veilid-flutter/example/integration_test/test_table_db.dart

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+import 'dart:convert';
+
+import 'package:flutter_test/flutter_test.dart';
+import 'package:veilid/veilid.dart';
+
+const testDb = "__dart_test_db";
+const testNonexistentDb = "__dart_test_nonexistent_db";
+
+Future<void> testDeleteTableDbNonExistent() async {
+  expect(await Veilid.instance.deleteTableDB(testNonexistentDb), isFalse);
+}
+
+Future<void> testOpenDeleteTableDb() async {
+  // delete test db if it exists
+  await Veilid.instance.deleteTableDB(testDb);
+
+  final tdb = await Veilid.instance.openTableDB(testDb, 1);
+  try {
+    expect(() async => await Veilid.instance.deleteTableDB(testDb),
+        throwsA(isA<VeilidAPIException>()));
+  } finally {
+    tdb.close();
+  }
+  expect(await Veilid.instance.deleteTableDB(testDb), isTrue);
+}
+
+Future<void> testOpenTwiceTableDb() async {
+  // delete test db if it exists
+  await Veilid.instance.deleteTableDB(testDb);
+
+  final tdb = await Veilid.instance.openTableDB(testDb, 1);
+  final tdb2 = await Veilid.instance.openTableDB(testDb, 1);
+
+  // delete should fail because open
+  await expectLater(() async => await Veilid.instance.deleteTableDB(testDb),
+      throwsA(isA<VeilidAPIException>()));
+  tdb.close();
+  // delete should fail because open
+  await expectLater(() async => await Veilid.instance.deleteTableDB(testDb),
+      throwsA(isA<VeilidAPIException>()));
+  tdb2.close();
+
+  // delete should now succeed
+  expect(await Veilid.instance.deleteTableDB(testDb), isTrue);
+}
+
+Future<void> testOpenTwiceTableDbStoreLoad() async {
+  // delete test db if it exists
+  await Veilid.instance.deleteTableDB(testDb);
+
+  final tdb = await Veilid.instance.openTableDB(testDb, 1);
+  try {
+    final tdb2 = await Veilid.instance.openTableDB(testDb, 1);
+    try {
+      // store into first db copy
+      await tdb.store(0, utf8.encode("asdf"), utf8.encode("1234"));
+      // load from second db copy
+      expect(
+          await tdb2.load(0, utf8.encode("asdf")), equals(utf8.encode("1234")));
+    } finally {
+      tdb2.close();
+    }
+  } finally {
+    tdb.close();
+  }
+
+  // delete should now succeed
+  expect(await Veilid.instance.deleteTableDB(testDb), isTrue);
+}
+
+Future<void> testOpenTwiceTableDbStoreDeleteLoad() async {
+  // delete test db if it exists
+  await Veilid.instance.deleteTableDB(testDb);
+
+  final tdb = await Veilid.instance.openTableDB(testDb, 1);
+  try {
+    final tdb2 = await Veilid.instance.openTableDB(testDb, 1);
+    try {
+      // store into first db copy
+      await tdb.store(0, utf8.encode("asdf"), utf8.encode("1234"));
+      // delete from second db copy and clean up
+      await tdb2.delete(0, utf8.encode("asdf"));
+    } finally {
+      tdb2.close();
+    }
+    // load from first db copy
+    expect(await tdb.load(0, utf8.encode("asdf")), isNull);
+  } finally {
+    tdb.close();
+  }
+
+  // delete should now succeed
+  expect(await Veilid.instance.deleteTableDB(testDb), isTrue);
+}
+
+Future<void> testResizeTableDb() async {
+  // delete test db if it exists
+  await Veilid.instance.deleteTableDB(testDb);
+
+  final tdb = await Veilid.instance.openTableDB(testDb, 1);
+  try {
+    // reopen the db with more columns should fail if it is already open
+    await expectLater(() async => await Veilid.instance.openTableDB(testDb, 2),
+        throwsA(isA<VeilidAPIException>()));
+  } finally {
+    tdb.close();
+  }
+
+  final tdb2 = await Veilid.instance.openTableDB(testDb, 2);
+  try {
+    // write something to second column
+    await tdb2.store(1, utf8.encode("qwer"), utf8.encode("5678"));
+
+    // reopen the db with fewer columns
+    final tdb3 = await Veilid.instance.openTableDB(testDb, 1);
+    try {
+      // Should fail access to second column
+      await expectLater(() async => await tdb3.load(1, utf8.encode("qwer")),
+          throwsA(isA<VeilidAPIException>()));
+
+      // Should succeed with access to second column
+      expect(
+          await tdb2.load(1, utf8.encode("qwer")), equals(utf8.encode("5678")));
+    } finally {
+      tdb3.close();
+    }
+  } finally {
+    tdb2.close();
+  }
+
+  // delete should now succeed
+  expect(await Veilid.instance.deleteTableDB(testDb), isTrue);
+}