String _textMismatchMessage()

in lib/src/file_descriptor.dart [143:177]

• 26 lines of code
• 5 McCabe index (conditional complexity)

  String _textMismatchMessage(
      String prettyPath, String expected, String actual) {
    final expectedLines = expected.split('\n');
    final actualLines = actual.split('\n');

    var results = [];

    // Compare them line by line to see which ones match.
    var length = math.max(expectedLines.length, actualLines.length);
    for (var i = 0; i < length; i++) {
      if (i >= actualLines.length) {
        // Missing output.
        results.add('? ${expectedLines[i]}');
      } else if (i >= expectedLines.length) {
        // Unexpected extra output.
        results.add('X ${actualLines[i]}');
      } else {
        var expectedLine = expectedLines[i];
        var actualLine = actualLines[i];

        if (expectedLine != actualLine) {
          // Mismatched lines.
          results.add('X $actualLine');
        } else {
          // Matched lines.
          results.add('${glyph.verticalLine} $actualLine');
        }
      }
    }

    return 'File "$prettyPath" should contain:\n'
        '${addBar(expected)}\n'
        'but actually contained:\n'
        "${results.join('\n')}";
  }