SourcePosition errorPos = pos(errorLine, errorColumn);
for (IllegalOperatorExpression illegalOp : ILLEGAL_OPERATORS) {
compile(prefix + CharEscapers.xmlEscaper().escape(illegalOp.getExpression()) + suffix);
for (OutputLanguage outputLanguage : illegalOp.getOutputLanguages()) {
assertAlert(new IllegalOperatorError(errorPos, outputLanguage.getDisplay(),
illegalOp.getOperator()));
}
assertNoUnexpectedAlerts();
}