fix error handling under new content map structure

Author: mattpolzin

Sources/OpenAPIKit/Encoding and Decoding Errors/ResponseDecodingError.swift

@@ -70,6 +70,11 @@ extension OpenAPI.Error.Decoding.Response {
 
     internal init(_ error: GenericError) {
         var codingPath = Self.relativePath(from: error.codingPath)
+
+        if error.pathIncludesSubject {
+            codingPath = codingPath.dropLast()
+        }
+
         let code = codingPath.removeFirst().stringValue.lowercased()
 
         // this part of the coding path is structurally guaranteed to be a status code

Sources/OpenAPIKit/Schema Object/JSONSchemaContext.swift

@@ -1173,11 +1173,13 @@ extension JSONSchema.IntegerContext: Decodable {
             let value = try intAttempt
                 ?? doubleAttempt.map { floatVal in
                 guard let integer = Int(exactly: floatVal) else {
+                    let key = max ? CodingKeys.maximum : CodingKeys.minimum
+                    let subject = key.rawValue
                     throw GenericError(
-                        subjectName: max ? "maximum" : "minimum",
+                        subjectName: subject,
                         details: "Expected an Integer literal but found a floating point value (\(String(describing: floatVal)))",
-                        codingPath: decoder.codingPath,
-                        pathIncludesSubject: false
+                        codingPath: decoder.codingPath + [key],
+                        pathIncludesSubject: true
                     )
                 }
                 return integer

Tests/OpenAPIKitErrorReportingTests/SchemaErrorTests.swift

@@ -44,7 +44,8 @@ final class SchemaErrorTests: XCTestCase {
                 "200",
                 "content",
                 "application/json",
-                "schema"
+                "schema",
+                "maximum"
             ])
         }
     }