From e8b89b49aaa8fd6f127249b2ca18954ddcb338ff Mon Sep 17 00:00:00 2001
From: Alsey Coleman Miller <alseycmiller@gmail.com>
Date: Mon, 5 Nov 2018 02:18:44 -0500
Subject: [PATCH] Updated unit tests

---
 Sources/CoreModel/InMemoryStore.swift     | 39 ++++++++++++++++++++++-
 Tests/CoreModelTests/CoreModelTests.swift |  3 ++
 2 files changed, 41 insertions(+), 1 deletion(-)

diff --git a/Sources/CoreModel/InMemoryStore.swift b/Sources/CoreModel/InMemoryStore.swift
index b288950..f7267f8 100644
--- a/Sources/CoreModel/InMemoryStore.swift
+++ b/Sources/CoreModel/InMemoryStore.swift
@@ -23,7 +23,36 @@ public final class InMemoryStore: StoreProtocol {
     /// Fetch managed objects.
     public func fetch(_ fetchRequest: FetchRequest) throws -> [ManagedObject] {
         
-        fatalError()
+        var identifiers = data.keys.filter { $0.entity == fetchRequest.entity }
+        
+        if fetchRequest.fetchOffset > 0 {
+            
+            identifiers = Array(identifiers.suffix(fetchRequest.fetchOffset))
+        }
+        
+        if fetchRequest.fetchLimit > 0 {
+            
+            identifiers = Array(identifiers.prefix(fetchRequest.fetchLimit))
+        }
+        
+        var managedObjects = identifiers.map { ManagedObject(identifier: $0, store: self) }
+        
+        if let predicate = fetchRequest.predicate {
+            
+            managedObjects = try managedObjects.filter {
+                try $0.evaluate(with: predicate)
+            }
+        }
+        
+        if fetchRequest.sortDescriptors.isEmpty == false {
+            
+            for sort in fetchRequest.sortDescriptors.reversed() {
+                
+                //managedObjects.sort(by: { $0. })
+            }
+        }
+        
+        return managedObjects
     }
     
     /// Create new managed object.
@@ -275,3 +304,11 @@ private extension InMemoryStore {
         case toMany(Set<Identifier>)
     }
 }
+
+extension InMemoryStore.ManagedObject: PredicateEvaluatable {
+    
+    public func evaluate(with predicate: Predicate) throws -> Bool {
+        
+        
+    }
+}
diff --git a/Tests/CoreModelTests/CoreModelTests.swift b/Tests/CoreModelTests/CoreModelTests.swift
index 299ee23..a86bb46 100644
--- a/Tests/CoreModelTests/CoreModelTests.swift
+++ b/Tests/CoreModelTests/CoreModelTests.swift
@@ -103,6 +103,9 @@ final class CoreModelTests: XCTestCase {
             XCTAssertFalse(person2.isDeleted)
             XCTAssertEqual(person1.relationship(for: "events"), .toMany([]))
             XCTAssertEqual(person2.relationship(for: "events"), .toMany([]))
+            
+            XCTAssertEqual(try store.fetch(FetchRequest(entity: "Person")), [person1, person2])
+            XCTAssertEqual(try store.fetch(FetchRequest(entity: "Event")), [event])
         }
         
         catch { XCTFail("\(error)") }