Avoid test implementation import

Author: simolus3

Diff for: packages/sqlite_async/test/utils/abstract_test_utils.dart

@@ -1,5 +1,4 @@
 import 'package:sqlite_async/sqlite_async.dart';
-import 'package:test_api/src/backend/invoker.dart';
 
 class TestDefaultSqliteOpenFactory extends DefaultSqliteOpenFactory {
   final String sqlitePath;
@@ -9,14 +8,7 @@ class TestDefaultSqliteOpenFactory extends DefaultSqliteOpenFactory {
 }
 
 abstract class AbstractTestUtils {
-  String dbPath() {
-    final test = Invoker.current!.liveTest;
-    var testName = test.test.name;
-    var testShortName =
-        testName.replaceAll(RegExp(r'[\s\./]'), '_').toLowerCase();
-    var dbName = "test-db/$testShortName.db";
-    return dbName;
-  }
+  String dbPath();
 
   /// Generates a test open factory
   Future<TestDefaultSqliteOpenFactory> testFactory(

Diff for: packages/sqlite_async/test/utils/native_test_utils.dart

@@ -26,6 +26,10 @@ class TestSqliteOpenFactory extends TestDefaultSqliteOpenFactory {
     sqlite_open.open.overrideFor(sqlite_open.OperatingSystem.linux, () {
       return DynamicLibrary.open(sqlitePath);
     });
+    sqlite_open.open.overrideFor(sqlite_open.OperatingSystem.macOS, () {
+      return DynamicLibrary.open(
+          '/Users/simon/src/sqlite_async.dart/sqlite-autoconf-3480000/.libs/libsqlite3.dylib');
+    });
     final db = super.open(options);
 
     db.createFunction(

Diff for: packages/sqlite_async/test/utils/stub_test_utils.dart

@@ -1,6 +1,11 @@
 import 'abstract_test_utils.dart';
 
 class TestUtils extends AbstractTestUtils {
+  @override
+  String dbPath() {
+    throw UnimplementedError();
+  }
+
   @override
   Future<void> cleanDb({required String path}) {
     throw UnimplementedError();

Diff for: packages/sqlite_async/test/utils/web_test_utils.dart

@@ -1,5 +1,6 @@
 import 'dart:async';
 import 'dart:js_interop';
+import 'dart:math';
 
 import 'package:sqlite_async/sqlite_async.dart';
 import 'package:test/test.dart';
@@ -9,6 +10,8 @@ import 'abstract_test_utils.dart';
 @JS('URL.createObjectURL')
 external String _createObjectURL(Blob blob);
 
+String? _dbPath;
+
 class TestUtils extends AbstractTestUtils {
   late Future<void> _isInitialized;
   late final SqliteOptions webOptions;
@@ -33,6 +36,21 @@ class TestUtils extends AbstractTestUtils {
             wasmUri: sqliteWasmUri.toString(), workerUri: sqliteUri));
   }
 
+  @override
+  String dbPath() {
+    if (_dbPath case final path?) {
+      return path;
+    }
+
+    final created = _dbPath = 'test-db/${Random().nextInt(1 << 31)}/test.db';
+    addTearDown(() {
+      // Pick a new path for the next test.
+      _dbPath = null;
+    });
+
+    return created;
+  }
+
   @override
   Future<void> cleanDb({required String path}) async {}