make openAnimation and closeAnimation functions private

.swift-version

@@ -1 +1 @@
-4.0
+4.2

FoldingCell.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = 'FoldingCell'
-  s.version      = '3.1.5'
+  s.version      = '4.0.0'
   s.summary      = 'UITableViewCell with folding animation.'
   s.homepage     = 'https://github.com/Ramotion/folding-cell'
   s.license      = 'MIT'

FoldingCell/FoldingCell/FoldingCell.swift

@@ -298,7 +298,7 @@ open class FoldingCell: UITableViewCell {
         return durations
     }
     
-    public func openAnimation(_ completion: (() -> Void)?) {
+    func openAnimation(_ completion: (() -> Void)?) {
         isUnfolded = true
         removeImageItemsFromAnimationView()
         addImageItemsToAnimationView()
@@ -345,7 +345,7 @@ open class FoldingCell: UITableViewCell {
         }
     }
     
-    public func closeAnimation(_ completion: (() -> Void)?) {
+    func closeAnimation(_ completion: (() -> Void)?) {
         isUnfolded = false
         removeImageItemsFromAnimationView()
         addImageItemsToAnimationView()

FoldingCell/FoldingCellDemoTests/FoldingCellDemoTests.swift

@@ -32,4 +32,10 @@ class FoldingCellDemoTests: XCTestCase {
     func testCreateFoldingCell() {
         XCTAssertNotNil(foldingCell)
     }
+    
+    func testUnfold() {
+        XCTAssertEqual(foldingCell.isUnfolded, false)
+        foldingCell.unfold(true)
+        XCTAssertEqual(foldingCell.isUnfolded, true)
+    }
 }