fraiseql-server 2.0.0-alpha.1

// Phase 12.3 Cycle 2: Database Adapter Integration Tests (RED)
//! Comprehensive test specifications for integrating field-level encryption
//! with database adapters for automatic encryption/decryption

#[cfg(test)]
mod database_adapter_tests {
    // ============================================================================
    // QUERY BUILDER INTEGRATION TESTS
    // ============================================================================

    /// Test encrypted field on INSERT query
    #[tokio::test]
    #[ignore] // Requires database setup
    async fn test_query_auto_encrypt_on_insert() {
        // When inserting a record with an encrypted field
        // Query builder should automatically encrypt plaintext
        // Encrypted value stored in database
        // Plaintext not visible in queries
        assert!(true);
    }

    /// Test encrypted field on SELECT query
    #[tokio::test]
    #[ignore]
    async fn test_query_auto_decrypt_on_select() {
        // When selecting rows with encrypted fields
        // Query builder automatically decrypts ciphertext
        // Application receives plaintext
        // No manual encryption/decryption needed
        assert!(true);
    }

    /// Test encrypted field on UPDATE query
    #[tokio::test]
    #[ignore]
    async fn test_query_auto_encrypt_on_update() {
        // When updating an encrypted field
        // New value automatically encrypted
        // Old value may be preserved or re-encrypted
        // Ciphertext only stored in database
        assert!(true);
    }

    /// Test encrypted field in WHERE clause limitations
    #[tokio::test]
    #[ignore]
    async fn test_query_encrypted_field_where_limitations() {
        // When attempting WHERE clause on encrypted field
        // Should not support direct equality (e.g., WHERE email = ?)
        // Encrypted data is not queryable directly
        // Need deterministic hash or separate index for searches
        assert!(true);
    }

    /// Test encrypted field in ORDER BY
    #[tokio::test]
    #[ignore]
    async fn test_query_encrypted_field_order_by() {
        // When attempting ORDER BY on encrypted field
        // Should not work (encrypted data not comparable)
        // Should return error or be unsupported
        assert!(true);
    }

    /// Test encrypted field in JOIN conditions
    #[tokio::test]
    #[ignore]
    async fn test_query_encrypted_field_join() {
        // When joining on encrypted field
        // Should not work (encrypted data not comparable)
        // Should return error
        assert!(true);
    }

    // ============================================================================
    // ADAPTER TRAIT TESTS
    // ============================================================================

    /// Test EncryptedFieldAdapter trait
    #[test]
    #[ignore]
    fn test_encrypted_field_adapter_trait() {
        // Adapter should define:
        // - get_encrypted_fields() -> list of field names
        // - get_encryption_key(field_name) -> Key from SecretsManager
        // - encrypt_value(field, value) -> ciphertext
        // - decrypt_value(field, ciphertext) -> plaintext
        assert!(true);
    }

    /// Test adapter with multiple encryption keys
    #[test]
    #[ignore]
    fn test_adapter_multiple_keys() {
        // When adapter has multiple fields with different encryption keys
        // Each field should use its own key
        // Keys sourced from SecretsManager
        // No key mixing between fields
        assert!(true);
    }

    /// Test adapter key caching
    #[test]
    #[ignore]
    fn test_adapter_key_caching() {
        // When encryption key accessed multiple times
        // Should cache key (via SecretsManager cache)
        // No redundant fetches from Vault
        // Cache invalidation on rotation
        assert!(true);
    }

    // ============================================================================
    // MAPPER/CODEC INTEGRATION TESTS
    // ============================================================================

    /// Test field mapper for encrypt on write
    #[tokio::test]
    #[ignore]
    async fn test_mapper_encrypt_on_write() {
        // When mapper writes a record
        // Designated fields automatically encrypted
        // Other fields left as-is
        // Mapper preserves type information
        assert!(true);
    }

    /// Test field mapper for decrypt on read
    #[tokio::test]
    #[ignore]
    async fn test_mapper_decrypt_on_read() {
        // When mapper reads a record from database
        // Encrypted fields automatically decrypted
        // Plaintext values available to application
        // Type information preserved
        assert!(true);
    }

    /// Test mapper with mixed encrypted/unencrypted fields
    #[tokio::test]
    #[ignore]
    async fn test_mapper_mixed_fields() {
        // When model has both encrypted and unencrypted fields
        // Only designated fields encrypted/decrypted
        // Other fields passed through unchanged
        // All fields available in result
        assert!(true);
    }

    /// Test mapper batch operations
    #[tokio::test]
    #[ignore]
    async fn test_mapper_batch_encrypt_decrypt() {
        // When processing batch of records
        // All records encrypted on insert
        // All records decrypted on select
        // Performance scales linearly
        assert!(true);
    }

    // ============================================================================
    // VAULT INTEGRATION TESTS
    // ============================================================================

    /// Test getting encryption key from Vault
    #[tokio::test]
    #[ignore]
    async fn test_adapter_vault_key_retrieval() {
        // When adapter needs encryption key
        // Should fetch from SecretsManager
        // SecretsManager connects to Vault Transit engine
        // Key cached for subsequent operations
        assert!(true);
    }

    /// Test key rotation from Vault
    #[tokio::test]
    #[ignore]
    async fn test_adapter_vault_key_rotation() {
        // When encryption key rotated in Vault
        // Adapter invalidates cached key
        // Next operation fetches new key
        // Old ciphertexts still decrypt (Vault versioning)
        assert!(true);
    }

    /// Test Vault unavailability handling
    #[tokio::test]
    #[ignore]
    async fn test_adapter_vault_unavailable() {
        // When Vault becomes unavailable
        // If key cached, operations continue
        // New operations fail with clear error
        // Graceful degradation (not panic)
        assert!(true);
    }

    // ============================================================================
    // CONTEXT-BASED ENCRYPTION IN DATABASE TESTS
    // ============================================================================

    /// Test storing context with encrypted data
    #[tokio::test]
    #[ignore]
    async fn test_database_context_storage() {
        // When encrypting with context (e.g., "user:123:email")
        // Context not stored (only plaintext encrypted)
        // Application must provide context on decrypt
        // Context mismatch detected on decrypt
        assert!(true);
    }

    /// Test context audit trail
    #[tokio::test]
    #[ignore]
    async fn test_database_context_audit_trail() {
        // When using context encryption
        // Audit log can track access by user (from context)
        // Encryption/decryption events correlated
        // Who accessed what when
        assert!(true);
    }

    /// Test context field validation
    #[tokio::test]
    #[ignore]
    async fn test_database_context_validation() {
        // When context generated from database values
        // Should validate context format
        // Prevent injection or tampering
        // Consistent format enforcement
        assert!(true);
    }

    // ============================================================================
    // TRANSACTION TESTS
    // ============================================================================

    /// Test encrypted fields in transactions
    #[tokio::test]
    #[ignore]
    async fn test_transaction_encrypt_decrypt() {
        // When transaction inserts and reads encrypted field
        // Insert encrypts value
        // Read within same transaction decrypts
        // Consistent encryption key throughout
        assert!(true);
    }

    /// Test transaction rollback with encryption
    #[tokio::test]
    #[ignore]
    async fn test_transaction_rollback() {
        // When transaction rolls back
        // Encrypted data not committed
        // Application state unchanged
        // No stale decryption keys
        assert!(true);
    }

    /// Test concurrent transactions with encryption
    #[tokio::test]
    #[ignore]
    async fn test_transaction_concurrent_encryption() {
        // When multiple transactions encrypt different fields
        // No lock contention on encryption
        // Keys cached per transaction
        // Isolation maintained
        assert!(true);
    }

    // ============================================================================
    // NULL AND EMPTY VALUE TESTS
    // ============================================================================

    /// Test NULL encrypted field
    #[tokio::test]
    #[ignore]
    async fn test_null_encrypted_field() {
        // When encrypted field is NULL
        // Should remain NULL (not encrypted)
        // Query builder handles NULL correctly
        // Decrypt of NULL returns NULL
        assert!(true);
    }

    /// Test empty string encryption
    #[tokio::test]
    #[ignore]
    async fn test_empty_string_encrypted_field() {
        // When encrypted field is empty string
        // Should encrypt empty string (not skip)
        // Decrypt returns empty string
        // Distinguishable from NULL
        assert!(true);
    }

    /// Test default value encryption
    #[tokio::test]
    #[ignore]
    async fn test_default_value_encrypted_field() {
        // When encrypted field uses DEFAULT value
        // Default applied before encryption
        // Encrypted value stored
        // Retrieved as encrypted
        assert!(true);
    }

    // ============================================================================
    // PERFORMANCE TESTS
    // ============================================================================

    /// Test encryption overhead on INSERT
    #[tokio::test]
    #[ignore]
    async fn test_performance_encrypt_overhead() {
        // When inserting 1000 records with encrypted fields
        // Encryption adds <10% overhead typically
        // Depends on key size and crypto library
        // Should complete in reasonable time
        assert!(true);
    }

    /// Test decryption overhead on SELECT
    #[tokio::test]
    #[ignore]
    async fn test_performance_decrypt_overhead() {
        // When selecting 1000 rows with encrypted fields
        // Decryption adds <10% overhead typically
        // Parallel decryption possible for batch reads
        // Should complete quickly
        assert!(true);
    }

    /// Test encryption key caching impact
    #[tokio::test]
    #[ignore]
    async fn test_performance_key_caching() {
        // When accessing encrypted fields repeatedly
        // With key caching: fast (no Vault calls)
        // Without key caching: slow (Vault round-trip)
        // Caching dramatically improves performance
        assert!(true);
    }

    // ============================================================================
    // ERROR HANDLING TESTS
    // ============================================================================

    /// Test encryption of invalid UTF-8
    #[tokio::test]
    #[ignore]
    async fn test_error_invalid_utf8_field() {
        // When database field contains invalid UTF-8
        // Should return error (not panic)
        // Clear error message
        // Indicate which field failed
        assert!(true);
    }

    /// Test decryption with wrong key
    #[tokio::test]
    #[ignore]
    async fn test_error_decrypt_wrong_key() {
        // When decryption key changed
        // Old ciphertexts fail to decrypt
        // Should return error (not garbage)
        // Indicate authentication failure
        assert!(true);
    }

    /// Test corrupted ciphertext in database
    #[tokio::test]
    #[ignore]
    async fn test_error_corrupted_ciphertext() {
        // When database contains corrupted encrypted data
        // Decryption should fail
        // Should return error (not panic)
        // Indicate data integrity issue
        assert!(true);
    }

    /// Test missing key in SecretsManager
    #[tokio::test]
    #[ignore]
    async fn test_error_missing_encryption_key() {
        // When encryption key not in SecretsManager
        // Should return error (not panic)
        // Clear indication that key missing
        // Operation cannot proceed
        assert!(true);
    }

    // ============================================================================
    // TYPE SYSTEM TESTS
    // ============================================================================

    /// Test encrypted VARCHAR field
    #[tokio::test]
    #[ignore]
    async fn test_type_varchar_encrypted() {
        // When VARCHAR field encrypted
        // Stored as BYTEA or BLOB in database
        // Retrieved as encrypted bytes
        // Decrypted to String
        assert!(true);
    }

    /// Test encrypted NUMERIC field
    #[tokio::test]
    #[ignore]
    async fn test_type_numeric_encrypted() {
        // When NUMERIC field encrypted (converted to string)
        // Encrypted as string representation
        // Decrypted returns string
        // Application converts back to number
        assert!(true);
    }

    /// Test encrypted TIMESTAMP field
    #[tokio::test]
    #[ignore]
    async fn test_type_timestamp_encrypted() {
        // When TIMESTAMP field encrypted
        // Converted to string, then encrypted
        // Decrypted string converted back to timestamp
        // Round-trip preserves value
        assert!(true);
    }

    /// Test encrypted JSON field
    #[tokio::test]
    #[ignore]
    async fn test_type_json_encrypted() {
        // When JSON field encrypted
        // Entire JSON encrypted as string
        // Decrypted JSON can be parsed
        // Structure preserved
        assert!(true);
    }

    // ============================================================================
    // SCHEMA DISCOVERY TESTS
    // ============================================================================

    /// Test adapter detects encrypted fields from schema
    #[test]
    #[ignore]
    fn test_schema_detect_encrypted_fields() {
        // Adapter should detect which fields are encrypted
        // From schema metadata or annotations
        // Auto-apply encryption/decryption
        // No manual configuration needed per query
        assert!(true);
    }

    /// Test adapter handles schema evolution
    #[test]
    #[ignore]
    fn test_schema_evolution_add_encrypted_field() {
        // When new encrypted field added to schema
        // Adapter automatically handles it
        // Old records (without encrypted field) work
        // New records encrypted
        assert!(true);
    }

    /// Test adapter handles encryption key changes
    #[test]
    #[ignore]
    fn test_schema_encryption_key_change() {
        // When encryption key changes for a field
        // Adapter uses new key
        // Old ciphertexts still decrypt (versioning)
        // Can support re-encryption if needed
        assert!(true);
    }
}