`grpctestify` supports console output and file reports.
```bash
grpctestify tests/
```
```bash
grpctestify tests/ --log-format json --log-output results.json
```
```bash
grpctestify tests/ --log-format junit --log-output results.xml
```
```bash
grpctestify tests/ --log-format allure --log-output allure-results
```
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