# D-1 Pre-Fix Test Suite

**Date:** 2026-03-29
**Branch:** culurien
**Purpose:** Document machine ID duplication bugs BEFORE fixes.
**Reference:** docs/D1_MachineID_Audit.md

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## Test Files

| File | Package | Bugs |
|------|---------|------|
| `system/machine_id_fallback_test.go` | `system` | F-D1-1 |
| `system/machine_id_format_test.go` | `system` | F-D1-1 |
| `system/machine_id_winpath_test.go` | `system` | F-D1-4 |
| `middleware/machine_id_recovery_test.go` | `middleware_test` | F-D1-2 |
| `logging/example_integration_test.go` | `logging` | F-D1-3 |
| `client/machine_id_logging_test.go` | `client` | F-D1-5 |

Note: `machine_id_winpath_test.go` uses this name (not `_windows_test.go`) to avoid Go's `_windows` filename suffix filtering which excludes files on Linux builds.

Note: `hashMachineID` is unexported but accessible from `system` package tests (same package).

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## State-Change Summary

| Test | Bug | Current | After Fix |
|------|-----|---------|-----------|
| TestRegistrationFallbackIsNotHashed | F-D1-1 | PASS | update |
| TestRegistrationFallbackUsesCanonicalFunction | F-D1-1 | **FAIL** | PASS |
| TestMachineIDIsAlways64HexChars | F-D1-1 | PASS | PASS |
| TestRegistrationAndRuntimeUseSameCodePath | F-D1-1 | **FAIL** | PASS |
| TestAllMachineIDFallbacksProduceSameFormat | F-D1-1 | PASS | PASS |
| TestHashMachineIDAlwaysProduces64HexChars | F-D1-1 | PASS | PASS |
| TestUnknownFallbackFormatDifferentFromHash | F-D1-1 | PASS | update |
| TestMachineBindingHasNoUpdatePath | F-D1-2 | PASS | update |
| TestMachineBindingShouldHaveUpdatePath | F-D1-2 | **FAIL** | PASS |
| TestExampleIntegrationFileIsDeadCode | F-D1-3 | PASS | update |
| TestExampleIntegrationFileDoesNotExist | F-D1-3 | **FAIL** | PASS |
| TestWindowsFallbackHasRedundantRetry | F-D1-4 | PASS | update |
| TestWindowsFallbackUsesAlternativeSources | F-D1-4 | **FAIL** | PASS |
| TestClientMachineIDErrorUsesFmtPrintf | F-D1-5 | PASS | update |
| TestClientMachineIDErrorUsesStructuredLogging | F-D1-5 | **FAIL** | PASS |

**6 FAIL** (assert post-fix), **9 PASS** (document current state).