tests: update tests to account for serialization and deserialization changes with new/modified model properties to support caching

tests/AnthropicClient.Tests/Unit/Models/UsageTests.cs

@@ -7,26 +7,39 @@ public class UsageTests : SerializationTest
   {
     var expectedInputTokens = 1;
     var expectedOutputTokens = 2;
+    var expectedCacheCreationInputTokens = 3;
+    var expectedCacheReadInputTokens = 4;
 
     var usage = new Usage
     {
       InputTokens = expectedInputTokens,
-      OutputTokens = expectedOutputTokens
+      OutputTokens = expectedOutputTokens,
+      CacheCreationInputTokens = expectedCacheCreationInputTokens,
+      CacheReadInputTokens = expectedCacheReadInputTokens
     };
 
     usage.InputTokens.Should().Be(expectedInputTokens);
     usage.OutputTokens.Should().Be(expectedOutputTokens);
+    usage.CacheCreationInputTokens.Should().Be(expectedCacheCreationInputTokens);
+    usage.CacheReadInputTokens.Should().Be(expectedCacheReadInputTokens);
   }
 
   [Fact]
   public void JsonSerialization_WhenCalled_ItShouldSerializeCorrectly()
   {
-    var expectedJson = @"{ ""input_tokens"": 1, ""output_tokens"": 2 }";
+    var expectedJson = @"{ 
+      ""input_tokens"": 1, 
+      ""output_tokens"": 2,
+      ""cache_creation_input_tokens"": 3,
+      ""cache_read_input_tokens"": 4
+    }";
 
     var usage = new Usage
     {
       InputTokens = 1,
-      OutputTokens = 2
+      OutputTokens = 2,
+      CacheCreationInputTokens = 3,
+      CacheReadInputTokens = 4
     };
 
     var actual = Serialize(usage);
@@ -37,11 +50,18 @@ public class UsageTests : SerializationTest
   [Fact]
   public void JsonDeserialization_WhenCalled_ItShouldDeserializeCorrectly()
   {
-    var json = @"{ ""input_tokens"": 1, ""output_tokens"": 2 }";
+    var json = @"{ 
+      ""input_tokens"": 1, 
+      ""output_tokens"": 2,
+      ""cache_creation_input_tokens"": 3,
+      ""cache_read_input_tokens"": 4
+    }";
 
     var usage = Deserialize<Usage>(json);
 
     usage!.InputTokens.Should().Be(1);
     usage.OutputTokens.Should().Be(2);
+    usage.CacheCreationInputTokens.Should().Be(3);
+    usage.CacheReadInputTokens.Should().Be(4);
   }
 }