50 lines
4.3 KiB
Markdown
50 lines
4.3 KiB
Markdown
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---
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source_files:
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- DataPRO/UnitTest/DatabaseUnitTesting/Properties/Settings.Designer.cs
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generated_at: "2026-04-16T03:51:52.660365+00:00"
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model: "Qwen/Qwen3-Coder-Next-FP8"
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schema_version: 1
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sha256: "f8ee505a9bbaa788"
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---
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# Properties
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## 1. Purpose
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This module defines strongly-typed application and user settings for the `DatabaseUnitTesting` project, specifically managing database connection and naming configuration used during unit testing. It leverages .NET’s `ApplicationSettingsBase` to provide compile-time-safe access to configuration values—such as the test database connection string, database name, and snapshot name—enabling consistent and maintainable test environment setup without hardcoding values.
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## 2. Public Interface
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The class `Settings` (fully qualified: `DatabaseUnitTesting.Properties.Settings`) exposes the following members:
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- **`public static Settings Default { get; }`**
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A thread-safe singleton accessor for the settings instance. Returns the single shared `Settings` object used throughout the application.
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- **`public string ConnectionString { get; }`**
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An *application-scoped* read-only string property providing the SQL Server connection string for the unit test database. Default value:
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`"Data Source=FAJITA\\DEV_SQL;Initial Catalog=DataPRO_UnitTest;Integrated Security=False;Persist Security Info=True;User ID=sa;Password=!!QQAAZZxxssww22;Connect Timeout=15;Encrypt=False;TrustServerCertificate=True;ApplicationIntent=ReadWrite;MultiSubnetFailover=False"`
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Marked with `SpecialSettingAttribute.SpecialSetting.ConnectionString`, indicating it is intended for ADO.NET connection usage.
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- **`public string DBName { get; set; }`**
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A *user-scoped* read-write string property for the target database name used in tests. Default value: `"DataPRO_UnitTest"`.
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- **`public string DBSnapshot { get; set; }`**
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A *user-scoped* read-write string property for the database snapshot name used during testing (likely for restoring state between test runs). Default value: `"DataPRO_UnitTestSnapshot"`.
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## 3. Invariants
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- The `ConnectionString` property is **application-scoped** and immutable at runtime—its value cannot be changed programmatically after initialization.
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- `DBName` and `DBSnapshot` are **user-scoped** and mutable; changes persist only for the current user and require explicit saving (e.g., via `Settings.Default.Save()`) to be persisted across sessions.
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- The `Default` property returns a synchronized (thread-safe) instance, implying safe concurrent read access.
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- The `ConnectionString` value is validated at design time by the Settings Designer as a well-formed connection string, but no runtime validation is present in this file.
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## 4. Dependencies
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- **Depends on**:
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- `System.Configuration` (for `ApplicationSettingsBase`, attributes like `ApplicationScopedSettingAttribute`, `SpecialSettingAttribute`, etc.)
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- `System.Diagnostics` (for `DebuggerNonUserCodeAttribute`)
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- `System.Runtime.CompilerServices` (for `CompilerGeneratedAttribute`)
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- **Used by**: Any code in the `DatabaseUnitTesting` project (or referencing it) that needs to access test database configuration—e.g., test setup/teardown logic, database initialization utilities, or test harnesses that restore snapshots or connect to the test database.
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## 5. Gotchas
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- **Hardcoded credentials**: The default `ConnectionString` embeds a plaintext password (`User ID=sa;Password=!!QQAAZZxxssww22`). This is a security risk and should be replaced with secure credential storage (e.g., Windows Credential Manager, Azure Key Vault) in production or shared environments.
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- **Assumed SQL Server instance**: The `Data Source=FAJITA\DEV_SQL` implies a specific named instance; this will fail on machines without that instance unless overridden in user settings or config.
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- **`Integrated Security=False`**: Explicit use of SQL authentication (not Windows auth) may not align with security policies in some environments.
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- **No validation logic**: The settings class does not validate that `DBName` or `DBSnapshot` refer to actual databases or that `DBSnapshot` is a valid snapshot name. Errors will surface only at runtime during database operations.
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- **Auto-generated file**: As indicated by the `<auto-generated>` header, manual edits will be overwritten on regeneration (e.g., after modifying settings in Visual Studio’s designer).
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