runEval method

Future<D4rtTestResult> runEval(BridgeConfig config, String initScriptFile, String expressionFile, { Duration? timeout, })

Generate bridges and evaluate an expression file, capturing results.

1. Runs the bridge generator in-memory with config.
2. Compiles and runs the test runner with --test-eval <initScriptFile> <expressionFile>. The init script sets up the D4rt environment (imports, variables), then the expression file is evaluated using eval().
3. Returns a D4rtTestResult.

Both file paths are relative to projectPath or absolute.

Example:

final result = await tester.runEval(
  config,
  'scripts/init.dart',
  'scripts/eval_expressions.dart',
);
expect(result.success, isTrue);

Implementation

Future<D4rtTestResult> runEval(
  BridgeConfig config,
  String initScriptFile,
  String expressionFile, {
  Duration? timeout,
}) async {
  // Generate and compile bridges
  final ok = await prepareBridges(config);
  if (!ok) {
    return D4rtTestResult(
      timedOut: false,
      exceptions: _lastGenerationErrors!,
      exitCode: -1,
    );
  }

  // Run using compiled binary
  return _runBinary([
    '--test-eval',
    initScriptFile,
    expressionFile,
  ], timeout ?? defaultTimeout);
}