{"record":{"id":"c6f5985ce1483654","repo":"crowdsecurity/crowdsec","slug":"couldn-t-generate-assertion-w-c6f598","errorCode":null,"errorMessage":"couldn't generate assertion: %w","messagePattern":"couldn't generate assertion: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"pkg/hubtest/parser_assert.go","lineNumber":141,"sourceCode":"\t\t\tif err != nil {\n\t\t\t\tlog.Errorf(\"unable to evaluate variable '%s': %s\", variable, err)\n\t\t\t\tcontinue\n\t\t\t}\n\n\t\t\tfailedAssert.Debug[variable] = result\n\t\t\tp.Fails = append(p.Fails, *failedAssert)\n\n\t\t\tcontinue\n\t\t}\n\t\t// fmt.Printf(\" %s '%s'\\n\", emoji.GreenSquare, scanner.Text())\n\t}\n\n\tfile.Close()\n\n\tif p.NbAssert == 0 {\n\t\tassertData, err := p.AutoGenFromFile(testFile)\n\t\tif err != nil {\n\t\t\treturn fmt.Errorf(\"couldn't generate assertion: %w\", err)\n\t\t}\n\n\t\tp.AutoGenAssertData = assertData\n\t\tp.AutoGenAssert = true\n\t}\n\n\tif len(p.Fails) == 0 {\n\t\tp.Success = true\n\t}\n\n\treturn nil\n}\n\nfunc basenameShim(expression string) string {\n\tif strings.Contains(expression, \"datasource_path\") && !strings.Contains(expression, \"basename(\") {\n\t\t// match everything before == and wrap it with basename()\n\t\tmatch := strings.Split(expression, \"==\")\n\t\treturn fmt.Sprintf(\"basename(%s) == %s\", match[0], match[1])","sourceCodeStart":123,"sourceCodeEnd":159,"githubUrl":"https://github.com/crowdsecurity/crowdsec/blob/909b5157986a2b2c2163300fdaef5ed01289f7d2/pkg/hubtest/parser_assert.go#L123-L159","documentation":"If an assert file contains zero assertions (NbAssert == 0 after reading all lines), hubtest tries to auto-generate assertions from the test file via AutoGenFromFile. This error wraps a failure of that auto-generation step, meaning the test file could not be parsed into generated assertion data.","triggerScenarios":"Calling AssertFile with an empty or all-comment assert file whose paired test file cannot be auto-asserted, e.g. AutoGenFromFile fails to read/parse the test file or produce assertion data.","commonSituations":"Empty .assert files where the sibling .txt/.log test file is missing or unreadable; test file path wrong in the test definition; malformed test data preventing auto-generation.","solutions":["Check that the test file paired with the assert file exists and is readable at the expected path","Write at least one real assertion in the .assert file so auto-generation is skipped","Inspect the wrapped AutoGenFromFile error for the root cause (I/O vs parse)","Regenerate the test bundle with cscli hubtest commands"],"exampleFix":"// before: empty mytest.assert causing autogen\n// after: add a valid assertion\nAlert.GetRemediationComponent() == 'crowdsec'","handlingStrategy":"validation","validationCode":"info, err := os.Stat(testFile)\nif err != nil || info.IsDir() {\n    return fmt.Errorf(\"test file %q missing for autogen\", testFile)\n}","typeGuard":null,"tryCatchPattern":"if err := p.AssertFile(...); err != nil {\n    if strings.Contains(err.Error(), \"couldn't generate assertion\") {\n        // fall back to writing manual assertions\n    }\n    return err\n}","preventionTips":["Always pair an empty .assert file with an existing, readable test data file","Write at least one assertion manually to avoid autogen entirely","Check test file paths in hubtest .yaml definitions"],"tags":["hubtest","assertion","autogen"],"backgroundTag":"file-read-failed","analyzedSha":"909b5157986a2b2c2163300fdaef5ed01289f7d2","analyzedAt":"2026-09-06T12:27:26.012Z","contentChangedAt":"2026-09-06T12:27:26.012Z","schemaVersion":2},"datasetVersion":"2026-09-14T00:17:10.932Z"}