How to merge results from multiple .xcresult files into a single Allure 3 report?

[danmir]

Hi,

With Allure 2, my CI workflow for multi-shard iOS test runs was:

• Convert each shard's .xcresult to raw allure-results using xcresults export:
  • xcresults export shard_0.xcresult -o allure-results-0
  • xcresults export shard_1.xcresult -o allure-results-1
• Merge all raw results into a single report:
  • allure generate allure-results-0 allure-results-1 -o combined-report

With Allure 3, allure generate reads .xcresult natively, which is great. But it produces a final report in one step. I can't find a way to combine results from multiple .xcresult files (from parallel test shards) into a single merged report.

What I've tried:

• Passing multiple directories to allure generate. Only accepts a single glob pattern
• Using a glob like "./shard_*" - fails with error parsing summary.json TypeError: parsed is not iterable (the cucumber JSON reader tries to parse non-result files)
• Pointing at the internal data/test-results directories from already-generated reports. Same parsing errors
• --dump flag — requires archives created by allure run --stage, which doesn't apply to my case

What I'm looking for:

• Is there a way to convert .xcresult → raw allure-results format without generating the final report (equivalent to xcresults export)? This would let me collect results from all shards and then run allure generate once.
  Alternatively, is there a supported way to merge multiple .xcresult files into one Allure 3 report?

Environment: Allure 3 (installed globally via npm), macOS, Xcode test results from 4 parallel shards.

Thank you!