Adds basic tests.

Author: kzaher

Podfile

@@ -10,6 +10,10 @@ target 'RxDataSources' do
     common
 end
 
+target 'Tests' do
+    common
+end
+
 target 'Example' do
     common
 end

Podfile.lock

@@ -27,6 +27,6 @@ SPEC CHECKSUMS:
   RxCocoa: 5dc35c1bbda792ce1b78544ec293a45a59008781
   RxSwift: 00ffe5e4bc528e93765ccf04ab6408e39dd2a602
 
-PODFILE CHECKSUM: 43bd333b10d7dfc5029b1ff3167bbf181e4f3f65
+PODFILE CHECKSUM: 1b0f7075764ff8e3c7b3d06fc4b91da00c8f3bcd
 
-COCOAPODS: 1.1.0.rc.2
+COCOAPODS: 1.1.1

RxDataSources.xcodeproj/project.pbxproj

@@ -113,7 +113,7 @@ func indexSections<S: AnimatableSectionModelType>(_ sections: [S]) throws -> [S.
                     print("Section \(section) has already been indexed at \(indexedSections[section.identity]!)")
                 }
             #endif
-            throw DifferentiatorError.duplicateItem(item: section)
+            throw DifferentiatorError.duplicateSection(section: section)
         }
         indexedSections[section.identity] = i
     }
@@ -282,9 +282,9 @@ public func differencesForSectionedView<S: AnimatableSectionModelType>(
 
     var sectionCommands = try CommandGenerator<S>.generatorForInitialSections(initialSections, finalSections: finalSections)
 
-    result.append(contentsOf: try sectionCommands.generateDeleteSections())
+    result.append(contentsOf: try sectionCommands.generateDeleteSectionsDeletedItemsAndUpdatedItems())
     result.append(contentsOf: try sectionCommands.generateInsertAndMoveSections())
-    result.append(contentsOf: try sectionCommands.generateNewAndMovedItems())
+    result.append(contentsOf: try sectionCommands.generateInsertAndMovedItems())
 
     return result
 }
@@ -522,7 +522,7 @@ struct CommandGenerator<S: AnimatableSectionModelType> {
         return (initialSectionData, finalSectionData)
     }
 
-    mutating func generateDeleteSections() throws -> [Changeset<S>] {
+    mutating func generateDeleteSectionsDeletedItemsAndUpdatedItems() throws -> [Changeset<S>] {
         var deletedSections = [Int]()
         var deletedItems = [ItemPath]()
         var updatedItems = [ItemPath]()
@@ -652,7 +652,7 @@ struct CommandGenerator<S: AnimatableSectionModelType> {
         )]
     }
 
-    mutating func generateNewAndMovedItems() throws -> [Changeset<S>] {
+    mutating func generateInsertAndMovedItems() throws -> [Changeset<S>] {
         var insertedItems = [ItemPath]()
         var movedItems = [(from: ItemPath, to: ItemPath)]()
 

Sources/DataSources/Differentiator.swift

@@ -11,6 +11,11 @@ import Foundation
 public struct ItemPath {
     public let sectionIndex: Int
     public let itemIndex: Int
+
+    public init(sectionIndex: Int, itemIndex: Int) {
+        self.sectionIndex = sectionIndex
+        self.itemIndex = itemIndex
+    }
 }
 
 extension ItemPath : Equatable {
@@ -19,4 +24,12 @@ extension ItemPath : Equatable {
 
 public func == (lhs: ItemPath, rhs: ItemPath) -> Bool {
     return lhs.sectionIndex == rhs.sectionIndex && lhs.itemIndex == rhs.itemIndex
-}
+}
+
+extension ItemPath: Hashable {
+
+    public var hashValue: Int {
+        return sectionIndex.byteSwapped.hashValue ^ itemIndex.hashValue
+    }
+    
+}