Product Launch Poster Example

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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

using Aspire.Cli.Utils;

namespace Aspire.Cli.Tests.Utils;

public class FileSystemHelperTests(ITestOutputHelper outputHelper)
{
 [Fact]
 public void CopyDirectory_WithSimpleFiles_CopiesAllFiles()
 {
 // Arrange
 using var workspace = TemporaryWorkspace.Create(outputHelper);
 var sourceDir = workspace.CreateDirectory("source");
 var destDir = Path.Combine(workspace.WorkspaceRoot.FullName, "destination");

 // Create some test files
 File.WriteAllText(Path.Combine(sourceDir.FullName, "file1.txt"), "content1");
 File.WriteAllText(Path.Combine(sourceDir.FullName, "file2.txt"), "content2");
 File.WriteAllText(Path.Combine(sourceDir.FullName, "file3.cs"), "using System;");

 // Act
 FileSystemHelper.CopyDirectory(sourceDir.FullName, destDir);

 // Assert
 Assert.True(Directory.Exists(destDir));
 Assert.True(File.Exists(Path.Combine(destDir, "file1.txt")));
 Assert.True(File.Exists(Path.Combine(destDir, "file2.txt")));
 Assert.True(File.Exists(Path.Combine(destDir, "file3.cs")));

 Assert.Equal("content1", File.ReadAllText(Path.Combine(destDir, "file1.txt")));
 Assert.Equal("content2", File.ReadAllText(Path.Combine(destDir, "file2.txt")));
 Assert.Equal("using System;", File.ReadAllText(Path.Combine(destDir, "file3.cs")));
 }

 [Fact]
 public void CopyDirectory_WithSubdirectories_CopiesRecursively()
 {
 // Arrange
 using var workspace = TemporaryWorkspace.Create(outputHelper);
 var sourceDir = workspace.CreateDirectory("source");
 var destDir = Path.Combine(workspace.WorkspaceRoot.FullName, "destination");

 // Create nested directory structure
 var subDir1 = sourceDir.CreateSubdirectory("subdir1");
 var subDir2 = subDir1.CreateSubdirectory("subdir2");

 File.WriteAllText(Path.Combine(sourceDir.FullName, "root.txt"), "root content");
 File.WriteAllText(Path.Combine(subDir1.FullName, "level1.txt"), "level 1 content");
 File.WriteAllText(Path.Combine(subDir2.FullName, "level2.txt"), "level 2 content");

 // Act
 FileSystemHelper.CopyDirectory(sourceDir.FullName, destDir);

 // Assert
 Assert.True(Directory.Exists(destDir));
 Assert.True(File.Exists(Path.Combine(destDir, "root.txt")));
 Assert.True(Directory.Exists(Path.Combine(destDir, "subdir1")));
 Assert.True(File.Exists(Path.Combine(destDir, "subdir1", "level1.txt")));
 Assert.True(Directory.Exists(Path.Combine(destDir, "subdir1", "subdir2")));
 Assert.True(File.Exists(Path.Combine(destDir, "subdir1", "subdir2", "level2.txt")));

 Assert.Equal("root content", File.ReadAllText(Path.Combine(destDir, "root.txt")));
 Assert.Equal("level 1 content", File.ReadAllText(Path.Combine(destDir, "subdir1", "level1.txt")));
 Assert.Equal("level 2 content", File.ReadAllText(Path.Combine(destDir, "subdir1", "subdir2", "level2.txt")));
 }

 [Fact]
 public void CopyDirectory_WithEmptyDirectory_CreatesDestination()
 {
 // Arrange
 using var workspace = TemporaryWorkspace.Create(outputHelper);
 var sourceDir = workspace.CreateDirectory("empty_source");
 var destDir = Path.Combine(workspace.WorkspaceRoot.FullName, "empty_destination");

 // Act
 FileSystemHelper.CopyDirectory(sourceDir.FullName, destDir);

 // Assert
 Assert.True(Directory.Exists(destDir));
 Assert.Empty(Directory.GetFiles(destDir));
 Assert.Empty(Directory.GetDirectories(destDir));
 }

 [Fact]
 public void CopyDirectory_WithNonExistentSource_ThrowsDirectoryNotFoundException()
 {
 // Arrange
 using var workspace = TemporaryWorkspace.Create(outputHelper);
 var nonExistentSource = Path.Combine(workspace.WorkspaceRoot.FullName, "nonexistent");
 var destDir = Path.Combine(workspace.WorkspaceRoot.FullName, "destination");

 // Act & Assert
 Assert.Throws<DirectoryNotFoundException>(() =>
 FileSystemHelper.CopyDirectory(nonExistentSource, destDir));
 }

 [Fact]
 public void CopyDirectory_WithNullSource_ThrowsArgumentNullException()
 {
 // Arrange
 using var workspace = TemporaryWorkspace.Create(outputHelper);
 var destDir = Path.Combine(workspace.WorkspaceRoot.FullName, "destination");

 // Act & Assert
 Assert.Throws<ArgumentNullException>(() =>
 FileSystemHelper.CopyDirectory(null!, destDir));
 }

 [Fact]
 public void CopyDirectory_WithNullDestination_ThrowsArgumentNullException()
 {
 // Arrange
 using var workspace = TemporaryWorkspace.Create(outputHelper);
 var sourceDir = workspace.CreateDirectory("source");

 // Act & Assert
 Assert.Throws<ArgumentNullException>(() =>
 FileSystemHelper.CopyDirectory(sourceDir.FullName, null!));
 }

 [Fact]
 public void CopyDirectory_WithEmptySource_ThrowsArgumentException()
 {
 // Arrange
 using var workspace = TemporaryWorkspace.Create(outputHelper);
 var destDir = Path.Combine(workspace.WorkspaceRoot.FullName, "destination");

 // Act & Assert
 Assert.Throws<ArgumentException>(() =>
 FileSystemHelper.CopyDirectory(string.Empty, destDir));
 }

 [Fact]
 public void CopyDirectory_WithEmptyDestination_ThrowsArgumentException()
 {
 // Arrange
 using var workspace = TemporaryWorkspace.Create(outputHelper);
 var sourceDir = workspace.CreateDirectory("source");

 // Act & Assert
 Assert.Throws<ArgumentException>(() =>
 FileSystemHelper.CopyDirectory(sourceDir.FullName, string.Empty));
 }

 [Fact]
 public void CopyDirectory_PreservesFileContent_WithBinaryFiles()
 {
 // Arrange
 using var workspace = TemporaryWorkspace.Create(outputHelper);
 var sourceDir = workspace.CreateDirectory("source");
 var destDir = Path.Combine(workspace.WorkspaceRoot.FullName, "destination");

 // Create a binary file with random content
 var binaryFilePath = Path.Combine(sourceDir.FullName, "binary.dat");
 var randomBytes = new byte[1024];
 Random.Shared.NextBytes(randomBytes);
 File.WriteAllBytes(binaryFilePath, randomBytes);

 // Act
 FileSystemHelper.CopyDirectory(sourceDir.FullName, destDir);

 // Assert
 var copiedFilePath = Path.Combine(destDir, "binary.dat");
 Assert.True(File.Exists(copiedFilePath));

 var copiedBytes = File.ReadAllBytes(copiedFilePath);
 Assert.Equal(randomBytes, copiedBytes);
 }

 [Fact]
 public void CopyDirectory_WithMultipleLevelsOfSubdirectories_CopiesAll()
 {
 // Arrange
 using var workspace = TemporaryWorkspace.Create(outputHelper);
 var sourceDir = workspace.CreateDirectory("source");
 var destDir = Path.Combine(workspace.WorkspaceRoot.FullName, "destination");

 // Create a deep directory structure
 var current = sourceDir;
 for (int i = 0; i < 5; i++)
 {
 current = current.CreateSubdirectory($"level{i}");
 File.WriteAllText(Path.Combine(current.FullName, $"file{i}.txt"), $"content at level {i}");
 }

 // Act
 FileSystemHelper.CopyDirectory(sourceDir.FullName, destDir);

 // Assert
 var currentDest = destDir;
 for (int i = 0; i < 5; i++)
 {
 currentDest = Path.Combine(currentDest, $"level{i}");
 Assert.True(Directory.Exists(currentDest));
 var filePath = Path.Combine(currentDest, $"file{i}.txt");
 Assert.True(File.Exists(filePath));
 Assert.Equal($"content at level {i}", File.ReadAllText(filePath));
 }
 }
}