fix: Fixed response deserialization when response type is just string.

Author: HavenDV

src/libs/OpenApiGenerator.Core/Generation/Sources.Methods.cs

@@ -202,7 +202,7 @@ public static string GenerateMethod(
             }" : @"
             response.EnsureSuccessStatusCode();")}
 
-{(endPoint.ContentType == ContentType.String ? $@" 
+{(endPoint.ContentType == ContentType.String && endPoint.ResponseType.CSharpTypeWithoutNullability is not "string" ? $@" 
             return
                 {jsonSerializer.GenerateDeserializeCall(endPoint.ResponseType, endPoint.Settings.JsonSerializerContext)} ??
                 throw new global::System.InvalidOperationException($""Response deserialization failed for \""{{__content}}\"" "");" : @" 

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/NewtonsoftJson/_#G.RAGEngineClient.V1LibraryManagement4.g.verified.cs

@@ -82,9 +82,7 @@ partial void ProcessV1LibraryManagement4ResponseContent(
                 throw new global::System.InvalidOperationException(__content, ex);
             }
 
-            return
-                global::Newtonsoft.Json.JsonConvert.DeserializeObject<string?>(__content, _jsonSerializerOptions) ??
-                throw new global::System.InvalidOperationException($"Response deserialization failed for \"{__content}\" ");
+            return __content;
         }
     }
 }

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/SystemTextJson/_#G.RAGEngineClient.V1LibraryManagement4.g.verified.cs

@@ -82,9 +82,7 @@ partial void ProcessV1LibraryManagement4ResponseContent(
                 throw new global::System.InvalidOperationException(__content, ex);
             }
 
-            return
-                global::System.Text.Json.JsonSerializer.Deserialize<string?>(__content, _jsonSerializerOptions) ??
-                throw new global::System.InvalidOperationException($"Response deserialization failed for \"{__content}\" ");
+            return __content;
         }
     }
 }

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Dedoose/NewtonsoftJson/_#G.AccountClient.AccountGetExportStorageMetricsJobId.g.verified.cs

@@ -88,9 +88,7 @@ partial void ProcessAccountGetExportStorageMetricsJobIdResponseContent(
                 throw new global::System.InvalidOperationException(__content, ex);
             }
 
-            return
-                global::Newtonsoft.Json.JsonConvert.DeserializeObject<string?>(__content, _jsonSerializerOptions) ??
-                throw new global::System.InvalidOperationException($"Response deserialization failed for \"{__content}\" ");
+            return __content;
         }
     }
 }

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Dedoose/NewtonsoftJson/_#G.AccountClient.AccountSendPaymentReceipt.g.verified.cs

@@ -100,9 +100,7 @@ partial void ProcessAccountSendPaymentReceiptResponseContent(
                 throw new global::System.InvalidOperationException(__content, ex);
             }
 
-            return
-                global::Newtonsoft.Json.JsonConvert.DeserializeObject<string?>(__content, _jsonSerializerOptions) ??
-                throw new global::System.InvalidOperationException($"Response deserialization failed for \"{__content}\" ");
+            return __content;
         }
     }
 }

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Dedoose/NewtonsoftJson/_#G.AccountClient.AccountStartExportAccountChargesJob.g.verified.cs

@@ -88,9 +88,7 @@ partial void ProcessAccountStartExportAccountChargesJobResponseContent(
                 throw new global::System.InvalidOperationException(__content, ex);
             }
 
-            return
-                global::Newtonsoft.Json.JsonConvert.DeserializeObject<string?>(__content, _jsonSerializerOptions) ??
-                throw new global::System.InvalidOperationException($"Response deserialization failed for \"{__content}\" ");
+            return __content;
         }
     }
 }

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Dedoose/NewtonsoftJson/_#G.AccountClient.AccountStartExportAccountPaymentsJob.g.verified.cs

@@ -88,9 +88,7 @@ partial void ProcessAccountStartExportAccountPaymentsJobResponseContent(
                 throw new global::System.InvalidOperationException(__content, ex);
             }
 
-            return
-                global::Newtonsoft.Json.JsonConvert.DeserializeObject<string?>(__content, _jsonSerializerOptions) ??
-                throw new global::System.InvalidOperationException($"Response deserialization failed for \"{__content}\" ");
+            return __content;
         }
     }
 }

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Dedoose/NewtonsoftJson/_#G.AccountClient.AccountStartExportAccountProjectSummaryJob.g.verified.cs

@@ -88,9 +88,7 @@ partial void ProcessAccountStartExportAccountProjectSummaryJobResponseContent(
                 throw new global::System.InvalidOperationException(__content, ex);
             }
 
-            return
-                global::Newtonsoft.Json.JsonConvert.DeserializeObject<string?>(__content, _jsonSerializerOptions) ??
-                throw new global::System.InvalidOperationException($"Response deserialization failed for \"{__content}\" ");
+            return __content;
         }
     }
 }

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Dedoose/NewtonsoftJson/_#G.AccountClient.AccountStartGetAccountProjectInfoJob.g.verified.cs

@@ -88,9 +88,7 @@ partial void ProcessAccountStartGetAccountProjectInfoJobResponseContent(
                 throw new global::System.InvalidOperationException(__content, ex);
             }
 
-            return
-                global::Newtonsoft.Json.JsonConvert.DeserializeObject<string?>(__content, _jsonSerializerOptions) ??
-                throw new global::System.InvalidOperationException($"Response deserialization failed for \"{__content}\" ");
+            return __content;
         }
     }
 }

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Dedoose/NewtonsoftJson/_#G.DescriptorClient.DescriptorForceDeleteDescriptorSetPolled.g.verified.cs

@@ -94,9 +94,7 @@ partial void ProcessDescriptorForceDeleteDescriptorSetPolledResponseContent(
                 throw new global::System.InvalidOperationException(__content, ex);
             }
 
-            return
-                global::Newtonsoft.Json.JsonConvert.DeserializeObject<string?>(__content, _jsonSerializerOptions) ??
-                throw new global::System.InvalidOperationException($"Response deserialization failed for \"{__content}\" ");
+            return __content;
         }
     }
 }