#1833 add happyflow tests

starsky/starskytest/starsky.foundation.writemeta/Helpers/ExifToolTest.cs

@@ -5,16 +5,61 @@
 using System.Threading.Tasks;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using starsky.foundation.platform.Models;
+using starsky.foundation.storage.Helpers;
+using starsky.foundation.storage.Services;
+using starsky.foundation.storage.Storage;
+using starsky.foundation.video.GetDependencies;
 using starsky.foundation.writemeta.Helpers;
 using starsky.foundation.writemeta.Services;
 using starskytest.FakeCreateAn;
+using starskytest.FakeCreateAn.CreateFakeExifToolWindows;
 using starskytest.FakeMocks;
 
 namespace starskytest.starsky.foundation.writemeta.Helpers;
 
 [TestClass]
 public sealed class ExifToolTest
 {
+	private readonly AppSettings _appSettingsWithExifTool;
+	private readonly StorageHostFullPathFilesystem _hostFullPathFilesystem;
+
+	public ExifToolTest()
+	{
+		_hostFullPathFilesystem = new StorageHostFullPathFilesystem(new FakeIWebLogger());
+		var exifToolExeWindows = new CreateFakeExifToolWindows().ExifToolPath;
+		_hostFullPathFilesystem.CreateDirectory(Path.Combine(new CreateAnImage().BasePath,
+			"ExifToolTest"));
+		var exifToolExePosix = Path.Combine(new CreateAnImage().BasePath,
+			"ExifToolTest", "exiftool");
+
+		CreateStubFile(exifToolExePosix,
+			"#!/bin/bash\necho Fake Executable");
+
+		new FfMpegChmod(new FakeSelectorStorage(_hostFullPathFilesystem),
+				new FakeIWebLogger())
+			.Chmod(exifToolExePosix).ConfigureAwait(false);
+
+		var exifToolExe = new AppSettings().IsWindows ? exifToolExeWindows : exifToolExePosix;
+		_appSettingsWithExifTool = new AppSettings { ExifToolPath = exifToolExe };
+	}
+
+	[ClassCleanup]
+	public static void CleanUp()
+	{
+		var folder = Path.Combine(new CreateAnImage().BasePath,
+			"ExifToolTest");
+		if ( Directory.Exists(folder) )
+		{
+			Directory.Delete(folder, true);
+		}
+	}
+
+	private void CreateStubFile(string path, string content)
+	{
+		var stream = StringToStreamHelper.StringToStream(content);
+		_hostFullPathFilesystem.WriteStream(stream, path);
+	}
+
 	[TestMethod]
 	public async Task ExifTool_ArgumentException()
 	{
@@ -121,4 +166,29 @@ public async Task WriteTagsAndRenameThumbnailAsync_Disposed()
 
 		Assert.AreEqual(1, storage.ExceptionCount);
 	}
+
+	[TestMethod]
+	public async Task ExifTool_WriteTagsAsync_HappyFlow()
+	{
+		var storage = new FakeIStorage(["/"],
+			["/test.jpg"],
+			new List<byte[]> { CreateAnImage.Bytes.ToArray() });
+
+		var (beforeHash, _) =
+			await new FileHash(storage, new FakeIWebLogger()).GetHashCodeAsync("/test.jpg");
+
+		var sut = new ExifTool(storage, storage,
+			_appSettingsWithExifTool, new FakeIWebLogger());
+
+		// Act
+		var result = await sut.WriteTagsAsync("/test.jpg", "-Software=\"Qdraw 2.0\"");
+
+		// Assert
+		var (afterHash, _) =
+			await new FileHash(storage, new FakeIWebLogger()).GetHashCodeAsync("/test.jpg");
+
+		Assert.IsTrue(result);
+		// Does change after update
+		Assert.AreNotEqual(beforeHash, afterHash);
+	}
 }