package fault

import (
	"os"
	"testing"
)

// TestMain controls whether fault injection tests run
// These tests require toxiproxy and are intended for nightly CI only
func TestMain(m *testing.M) {
	// Check if fault injection tests should run
	if os.Getenv("FETCH_ML_FAULT_INJECTION") != "1" {
		// Skip all fault tests silently
		os.Exit(0)
	}
	os.Exit(m.Run())
}

// TestNVMLUnavailableProvenanceFail verifies that when NVML is unavailable
// and ProvenanceBestEffort=false, the job fails loudly (no silent degradation)
func TestNVMLUnavailableProvenanceFail(t *testing.T) {
	// TODO: Implement fault injection test with toxiproxy
	// This test requires:
	// - toxiproxy setup for GPU/NVML fault simulation
	// - Configuration with ProvenanceBestEffort=false
	// - A job that requires GPU
	// - Verification that job fails with clear error, not silent degradation
	t.Log("TODO: Implement NVML fault injection test")
}

// TestManifestWritePartialFailure verifies that if manifest write fails midway,
// no partial manifest is left on disk
func TestManifestWritePartialFailure(t *testing.T) {
	// TODO: Implement fault injection test with disk fault simulation
	// This test requires:
	// - toxiproxy or disk fault injection setup
	// - Write of large manifest that gets interrupted
	// - Verification that no partial/corrupted manifest exists
	t.Log("TODO: Implement manifest partial failure test")
}

// TestRedisUnavailableQueueBehavior verifies that when Redis is unavailable,
// there is no silent queue item drop
func TestRedisUnavailableQueueBehavior(t *testing.T) {
	// TODO: Implement fault injection test with Redis fault simulation
	// This test requires:
	// - toxiproxy for Redis fault simulation
	// - Queue operations during Redis outage
	// - Verification that items are not dropped (either processed or error returned)
	t.Log("TODO: Implement Redis queue fault injection test")
}

// TestAuditLogUnavailableHaltsJob verifies that if audit log write fails,
// the job halts rather than continuing without audit trail
func TestAuditLogUnavailableHaltsJob(t *testing.T) {
	// TODO: Implement fault injection test for audit log failures
	// This test requires:
	// - toxiproxy for audit log fault simulation
	// - Job submission when audit log is unavailable
	// - Verification that job halts rather than continuing unaudited
	t.Log("TODO: Implement audit log fault injection test")
}

// TestConfigHashFailureProvenanceClosed verifies that if config hash computation
// fails in strict mode, the operation fails closed (secure default)
func TestConfigHashFailureProvenanceClosed(t *testing.T) {
	// TODO: Implement fault injection test for hash computation failures
	// This test requires:
	// - Fault injection framework for hash computation failures
	// - Strict provenance mode enabled
	// - Verification that operation fails closed (secure default)
	t.Log("TODO: Implement config hash failure test")
}

// TestDiskFullDuringArtifactScan verifies that when disk is full during
// artifact scanning, an error is returned rather than a partial manifest
func TestDiskFullDuringArtifactScan(t *testing.T) {
	// TODO: Implement fault injection test for disk full scenarios
	// This test requires:
	// - Disk space fault injection or container limits
	// - Artifact scan operation that would fill disk
	// - Verification that error is returned, not partial manifest
	t.Log("TODO: Implement disk full artifact scan test")
}