Code factorization

Author: cedx

res/Database.sqlite

@@ -0,0 +1,26 @@
+namespace Belin.Sql;
+
+using System.Data.SQLite;
+
+/// <summary>
+/// Provides extensions members for test assertions.
+/// </summary>
+public static class AssertExtensions {
+	// TODO (.NET 10) extension(Assert _) {
+
+	/// <summary>
+	/// Creates a new in-memory SQLite database, initialized with a default dataset.
+	/// </summary>
+	/// <param name="_">The instance of the assertion functionality.</param>
+	/// <returns>The connection to the newly created in-memory database.</returns>
+	public static SQLiteConnection CreateInMemoryDatabase(this Assert _) {
+		var connection = new SQLiteConnection("DataSource=:memory:");
+		connection.Open();
+
+		using var command = connection.CreateCommand();
+		command.CommandText = File.ReadAllText(Path.Join(AppContext.BaseDirectory, "../res/Schema.sql"));
+		command.ExecuteNonQuery();
+
+		return connection;
+	}
+}

test/AssertExtensions.cs

@@ -0,0 +1 @@
+$connection.Close()

test/Cmdlets/AfterEach.ps1

@@ -0,0 +1,3 @@
+Import-Module "$PSScriptRoot/../../Sql.psd1"
+Import-Module "$PSScriptRoot/../../bin/System.Data.SQLite.dll"
+. "$PSScriptRoot/../Fixtures/Character.ps1"

test/Cmdlets/BeforeAll.ps1

@@ -0,0 +1,10 @@
+using namespace System.Diagnostics.CodeAnalysis
+
+[SuppressMessage("PSUseDeclaredVarsMoreThanAssignments", "")]
+$connection = [System.Data.SQLite.SQLiteConnection]::new("DataSource=:memory:")
+$connection.Open()
+
+$command = $connection.CreateCommand()
+$command.CommandText = Get-Content "res/Schema.sql" -Raw
+$command.ExecuteNonQuery()
+$command.Dispose()

test/Cmdlets/BeforeEach.ps1

@@ -1,24 +1,11 @@
-using namespace System.Diagnostics.CodeAnalysis
-
 <#
 .SYNOPSIS
 	Tests the features of the `Get-First` cmdlet.
 #>
 Describe "Get-First" {
-	BeforeAll {
-		Import-Module "$PSScriptRoot/../../Sql.psd1"
-		Import-Module "$PSScriptRoot/../../bin/System.Data.SQLite.dll"
-		. "$PSScriptRoot/../Fixtures/Character.ps1"
-	}
-
-	BeforeEach {
-		[SuppressMessage("PSUseDeclaredVarsMoreThanAssignments", "")]
-		$connection = [System.Data.SQLite.SQLiteConnection]::new("DataSource=$PSScriptRoot/../../res/Database.sqlite")
-	}
-
-	AfterEach {
-		$connection.Close()
-	}
+	BeforeAll { . "$PSScriptRoot/BeforeAll.ps1" }
+	BeforeEach { . "$PSScriptRoot/BeforeEach.ps1" }
+	AfterEach { . "$PSScriptRoot/AfterEach.ps1" }
 
 	It "should return the first record produced by the SQL query" {
 		$sql = "SELECT * FROM Characters WHERE FullName = @FullName"

test/Cmdlets/Get-First.Tests.ps1

@@ -4,8 +4,7 @@
 #>
 Describe "Get-Mapper" {
 	BeforeAll {
-		Import-Module "$PSScriptRoot/../../Sql.psd1"
-		. "$PSScriptRoot/../Fixtures/Character.ps1"
+		. "$PSScriptRoot/BeforeAll.ps1"
 	}
 
 	Describe "CreateInstance()" {

test/Cmdlets/Get-Mapper.Tests.ps1

@@ -1,23 +1,11 @@
-using namespace System.Diagnostics.CodeAnalysis
-
 <#
 .SYNOPSIS
 	Tests the features of the `Get-Scalar` cmdlet.
 #>
 Describe "Get-Scalar" {
-	BeforeAll {
-		Import-Module "$PSScriptRoot/../../Sql.psd1"
-		Import-Module "$PSScriptRoot/../../bin/System.Data.SQLite.dll"
-	}
-
-	BeforeEach {
-		[SuppressMessage("PSUseDeclaredVarsMoreThanAssignments", "")]
-		$connection = [System.Data.SQLite.SQLiteConnection]::new("DataSource=$PSScriptRoot/../../res/Database.sqlite")
-	}
-
-	AfterEach {
-		$connection.Close()
-	}
+	BeforeAll { . "$PSScriptRoot/BeforeAll.ps1" }
+	BeforeEach { . "$PSScriptRoot/BeforeEach.ps1" }
+	AfterEach { . "$PSScriptRoot/AfterEach.ps1" }
 
 	It "should return the single value produced by the SQL query" {
 		$sql = "SELECT COUNT(*) FROM Characters WHERE Gender = @Gender"

test/Cmdlets/Get-Scalar.Tests.ps1

@@ -1,24 +1,11 @@
-using namespace System.Diagnostics.CodeAnalysis
-
 <#
 .SYNOPSIS
 	Tests the features of the `Get-Single` cmdlet.
 #>
 Describe "Get-Single" {
-	BeforeAll {
-		Import-Module "$PSScriptRoot/../../Sql.psd1"
-		Import-Module "$PSScriptRoot/../../bin/System.Data.SQLite.dll"
-		. "$PSScriptRoot/../Fixtures/Character.ps1"
-	}
-
-	BeforeEach {
-		[SuppressMessage("PSUseDeclaredVarsMoreThanAssignments", "")]
-		$connection = [System.Data.SQLite.SQLiteConnection]::new("DataSource=$PSScriptRoot/../../res/Database.sqlite")
-	}
-
-	AfterEach {
-		$connection.Close()
-	}
+	BeforeAll { . "$PSScriptRoot/BeforeAll.ps1" }
+	BeforeEach { . "$PSScriptRoot/BeforeEach.ps1" }
+	AfterEach { . "$PSScriptRoot/AfterEach.ps1" }
 
 	It "should return the single record produced by the SQL query" {
 		$sql = "SELECT * FROM Characters WHERE FullName = @FullName"

test/Cmdlets/Get-Single.Tests.ps1

@@ -1,24 +1,11 @@
-using namespace System.Diagnostics.CodeAnalysis
-
 <#
 .SYNOPSIS
 	Tests the features of the `Invoke-Query` cmdlet.
 #>
 Describe "Invoke-Query" {
-	BeforeAll {
-		Import-Module "$PSScriptRoot/../../Sql.psd1"
-		Import-Module "$PSScriptRoot/../../bin/System.Data.SQLite.dll"
-		. "$PSScriptRoot/../Fixtures/Character.ps1"
-	}
-
-	BeforeEach {
-		[SuppressMessage("PSUseDeclaredVarsMoreThanAssignments", "")]
-		$connection = [System.Data.SQLite.SQLiteConnection]::new("DataSource=$PSScriptRoot/../../res/Database.sqlite")
-	}
-
-	AfterEach {
-		$connection.Close()
-	}
+	BeforeAll { . "$PSScriptRoot/BeforeAll.ps1" }
+	BeforeEach { . "$PSScriptRoot/BeforeEach.ps1" }
+	AfterEach { . "$PSScriptRoot/AfterEach.ps1" }
 
 	It "should return the records produced by the SQL query" {
 		$sql = "SELECT * FROM Characters WHERE Gender = @Gender ORDER BY FullName"