From 473a302dad8de4291a6270ddcb7b1e3a01218b3f Mon Sep 17 00:00:00 2001
From: ened <acedealer2014@gmail.com>
Date: Fri, 9 Jun 2023 14:16:33 +0900
Subject: [PATCH] Validate when result of Item is un-sorted

---
 KissMeme/KissDB.swift             |  2 ++
 KissMemeTests/KissMemeTests.swift | 17 +++++++++++++----
 2 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/KissMeme/KissDB.swift b/KissMeme/KissDB.swift
index 951468b..9075e78 100644
--- a/KissMeme/KissDB.swift
+++ b/KissMeme/KissDB.swift
@@ -126,6 +126,8 @@ public class KissDB: NSObject {
         }
     }
     
+    /// The result of `Item` is not sorted.
+    /// 
     public func select(into: ((Item)->Bool)?) throws {
         let obj = ItemCallbackObject(itemCallback: into)
         let userPtr = Unmanaged.passUnretained(obj).toOpaque()
diff --git a/KissMemeTests/KissMemeTests.swift b/KissMemeTests/KissMemeTests.swift
index 7fd1f88..f1fbcb2 100644
--- a/KissMemeTests/KissMemeTests.swift
+++ b/KissMemeTests/KissMemeTests.swift
@@ -62,14 +62,23 @@ final class KissMemeTests: XCTestCase {
         try db.begin()
         print("DB count: \(db.count)")
         
-        var index = 0
+        var result = [String: String]()
         try db.select(into: { item in
-            XCTAssertTrue(item.key == "hello\(index)")
-            XCTAssertTrue(item.value == "world\(index)")
-            index += 1
+            result[item.key] = item.value
             return true
         })
         
+        for i in 0 ..< maxItems {
+            guard let value = result["hello\(i)"] else {
+                XCTAssertThrowsError("key not exist for hello\(i)")
+                continue
+            }
+            guard value == "world\(i)" else {
+                XCTAssertThrowsError("value not matched for hello\(i) \(value)")
+                continue
+            }
+        }
+        
         try db.rollback()
         let endTime = KissDB.appTime
         print("DB count: \(db.count) selectAll elapsed: \(endTime - startTime)")