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docs/ai/DataPRO/UnitTest/DatabaseUnitTesting/Properties.md

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+---
+source_files:
+  - DataPRO/UnitTest/DatabaseUnitTesting/Properties/Settings.Designer.cs
+generated_at: "2026-04-17T16:45:48.166150+00:00"
+model: "zai-org/GLM-5-FP8"
+schema_version: 1
+sha256: "414dafff4d3f4086"
+---
+
+# Documentation: DatabaseUnitTesting.Properties.Settings
+
+## 1. Purpose
+
+This module is an auto-generated settings class that provides strongly-typed access to application configuration values for the `DatabaseUnitTesting` project. It exists to centralize configuration management for database unit testing, specifically storing connection parameters, database names, and snapshot identifiers. The class is generated by Visual Studio's `SettingsSingleFileGenerator` tool and serves as the configuration layer between the unit test code and the underlying `.settings` file.
+
+---
+
+## 2. Public Interface
+
+### `Settings` (sealed partial class)
+**Inherits from:** `global::System.Configuration.ApplicationSettingsBase`
+
+| Member | Signature | Scope | Description |
+|--------|-----------|-------|-------------|
+| `Default` | `public static Settings Default { get; }` | Static | Returns the singleton default instance of the `Settings` class, synchronized for thread-safe access. |
+| `ConnectionString` | `public string ConnectionString { get; }` | Application-scoped | Returns the database connection string for the unit test database. Read-only. Default value points to `FAJITA\DEV_SQL` server with `DataPRO_UnitTest` catalog. |
+| `DBName` | `public string DBName { get; set; }` | User-scoped | Gets or sets the database name. Default value is `"DataPRO_UnitTest"`. |
+| `DBSnapshot` | `public string DBSnapshot { get; set; }` | User-scoped | Gets or sets the database snapshot name. Default value is `"DataPRO_UnitTestSnapshot"`. |
+
+---
+
+## 3. Invariants
+
+- **Auto-generated constraint**: This file is machine-generated by `Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator` version `17.10.0.0`. Manual modifications will be lost upon regeneration.
+- **Singleton pattern**: The `defaultInstance` field is created once via `Synchronized()` and returned through the `Default` property.
+- **Scope immutability**: `ConnectionString` is application-scoped (read-only at runtime); `DBName` and `DBSnapshot` are user-scoped (read/write).
+- **Type safety**: All settings are typed as `string`; accessors perform explicit casts from the underlying settings dictionary.
+
+---
+
+## 4. Dependencies
+
+### This module depends on:
+- `System.Configuration.ApplicationSettingsBase` - Base class providing settings management infrastructure
+- `System.Configuration.ApplicationScopedSettingAttribute` - Attribute for application-level settings
+- `System.Configuration.UserScopedSettingAttribute` - Attribute for user-level settings
+- `System.Configuration.SpecialSettingAttribute` - Marks `ConnectionString` as a special connection string type
+- `System.Configuration.DefaultSettingValueAttribute` - Provides default values for each setting
+- `System.Runtime.CompilerServices.CompilerGeneratedAttribute` - Indicates tool-generated code
+- `System.CodeDom.Compiler.GeneratedCodeAttribute` - Metadata about the code generator
+
+### What depends on this module:
+- **Inferred**: Any code within the `DatabaseUnitTesting` project that accesses configuration values via `Settings.Default`.
+
+---
+
+## 5. Gotchas
+
+1. **Hardcoded credentials in source control**: The `ConnectionString` default value contains a plaintext SQL Server `sa` password (`!!QQAAZZxxssww22`). This is a significant security risk and should be moved to a secure configuration mechanism (e.g