test: Added GenerateImage.

Author: HavenDV

Diff for: README.md

@@ -19,8 +19,15 @@ using Luma;
 
 using var api = new LumaClient(apiKey);
 
+// generate image
+Generation generation = await client.Generations.GenerateImageAsync(
+    prompt: "The beautiful woman just smiles",
+    aspectRatio: AspectRatio.x4_3,
+    cancellationToken: cancellationToken);
+
+// or generate video
 Generation generation = await client.Generations.CreateGenerationAsync(
-    prompt: "No camera movement. The girl just stands there and smiles. The waves in the background move a little.",
+    prompt: "No camera movement. The beautiful woman just stands there and smiles. The waves in the background move a little.",
     aspectRatio: AspectRatio.x4_3,
     loop: false,
     keyframes: new Keyframes

Diff for: src/tests/IntegrationTests/Tests.GenerateImage.cs

@@ -0,0 +1,42 @@
+namespace Luma.IntegrationTests;
+
+public partial class Tests
+{
+    [TestMethod]
+    public async Task GenerateImageAsync()
+    {
+        using var client = GetAuthenticatedClient();
+        using var cancellationTokenSource = new CancellationTokenSource(TimeSpan.FromMinutes(5));
+        var cancellationToken = cancellationTokenSource.Token;
+
+        Generation generation = await client.Generations.GenerateImageAsync(
+            prompt: "The beautiful woman just smiles",
+            aspectRatio: AspectRatio.x4_3,
+            cancellationToken: cancellationToken);
+
+        if (generation.Id == null)
+        {
+            throw new InvalidOperationException("Generation Id is null.");
+        }
+        
+        while (generation.State != State.Failed && generation.State != State.Completed)
+        {
+            await Task.Delay(TimeSpan.FromSeconds(5), cancellationToken);
+            
+            generation = await client.Generations.GetGenerationAsync(
+                id: generation.Id!.Value.ToString(),
+                cancellationToken: cancellationToken);
+        }
+        
+        Console.WriteLine($"Id: {generation.Id}");
+        Console.WriteLine($"FailureReason: {generation.FailureReason}");
+        Console.WriteLine($"Image URL: {generation.Assets?.Image}");
+        Console.WriteLine($"State: {generation.State}");
+        
+        generation.FailureReason.Should().BeNull();
+        generation.Id.Should().NotBeEmpty();
+        generation.Assets.Should().NotBeNull();
+        generation.Assets!.Image.Should().NotBeNull();
+        generation.State.Should().Be(State.Completed);
+    }
+}

Diff for: src/tests/IntegrationTests/Tests.CreateGeneration.cs renamed to src/tests/IntegrationTests/Tests.GenerateVideo.cs

@@ -3,14 +3,14 @@ namespace Luma.IntegrationTests;
 public partial class Tests
 {
     [TestMethod]
-    public async Task CreateGeneration()
+    public async Task GenerateVideo()
     {
         using var client = GetAuthenticatedClient();
         using var cancellationTokenSource = new CancellationTokenSource(TimeSpan.FromMinutes(5));
         var cancellationToken = cancellationTokenSource.Token;
 
         Generation generation = await client.Generations.CreateGenerationAsync(
-            prompt: "The girl just smiles",
+            prompt: "The beautiful woman just smiles",
             aspectRatio: AspectRatio.x4_3,
             loop: false,
             keyframes: new Keyframes