From bc6377f1ab4e3cd7496fecab583a8fd00a310e75 Mon Sep 17 00:00:00 2001
From: r-plus <anasthasia.r@gmail.com>
Date: Mon, 10 Jun 2019 12:08:17 +0900
Subject: [PATCH] test: Add test case for #1043

---
 Tests/ObjectMapperTests/ImmutableTests.swift | 28 ++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/Tests/ObjectMapperTests/ImmutableTests.swift b/Tests/ObjectMapperTests/ImmutableTests.swift
index b0d23e3e..9a13661b 100644
--- a/Tests/ObjectMapperTests/ImmutableTests.swift
+++ b/Tests/ObjectMapperTests/ImmutableTests.swift
@@ -331,6 +331,34 @@ class ImmutableObjectTests: XCTestCase {
 		XCTAssertEqual(object?.immutable?.value, "Hello")
 	}
 	
+	func testAsPropertyOfOptionalImmutableMappable() {
+		struct ImmutableObject: ImmutableMappable {
+			let value: String?
+			init(map: Map) throws {
+				self.value = try map.value("value")
+			}
+		}
+
+		struct Object: ImmutableMappable {
+			let immutable: ImmutableObject?
+			init(map: Map) throws {
+				self.immutable = try map.value("immutable")
+			}
+		}
+
+		let json: [String: Any] = [
+			"immutable": [
+				"value": "Hello"
+			]
+		]
+		do {
+			let object = try Mapper<Object>().map(JSON: json)
+			XCTAssertEqual(object.immutable?.value, "Hello")
+		} catch {
+			XCTFail()
+		}
+	}
+
 }
 
 struct Struct {