Add UIScrollViewDelegate control event tests

qazyn951230 · Jun 29, 2017 · 4e06fc8 · 4e06fc8
1 parent b7d1bdd
commit 4e06fc8
Showing 1 changed file with 101 additions and 0 deletions.
diff --git a/Tests/RxCocoaTests/UIScrollView+RxTests.swift b/Tests/RxCocoaTests/UIScrollView+RxTests.swift
@@ -62,6 +62,28 @@ extension UIScrollViewTests {
         XCTAssertTrue(completed)
     }
 
+    func testScrollViewWillBeginDecelerating() {
+        var completed = false
+
+        autoreleasepool {
+            let scrollView = UIScrollView()
+            var willBeginDecelerating = false
+
+            _ = scrollView.rx.willBeginDecelerating.subscribe(onNext: {
+                willBeginDecelerating = true
+            }, onCompleted: {
+                completed = true
+            })
+
+            XCTAssertFalse(willBeginDecelerating)
+
+            scrollView.delegate!.scrollViewWillBeginDecelerating!(scrollView)
+
+            XCTAssertTrue(willBeginDecelerating)
+        }
+
+        XCTAssertTrue(completed)
+    }
 
 	func testScrollViewDidEndDecelerating() {
 		var completed = false
@@ -85,6 +107,29 @@ extension UIScrollViewTests {
 
 		XCTAssertTrue(completed)
 	}
+
+    func testScrollViewWillBeginDragging() {
+        var completed = false
+
+        autoreleasepool {
+            let scrollView = UIScrollView()
+            var willBeginDragging = false
+
+            _ = scrollView.rx.willBeginDragging.subscribe(onNext: {
+                willBeginDragging = true
+            }, onCompleted: {
+                completed = true
+            })
+
+            XCTAssertFalse(willBeginDragging)
+
+            scrollView.delegate!.scrollViewWillBeginDragging!(scrollView)
+
+            XCTAssertTrue(willBeginDragging)
+        }
+
+        XCTAssertTrue(completed)
+    }
 
 	func testScrollViewDidEndDragging() {
 		var completed = false
@@ -191,6 +236,62 @@ extension UIScrollViewTests {
 
         XCTAssertTrue(completed)
     }
+
+    func testScrollViewWillBeginZooming() {
+        var completed = false
+
+        autoreleasepool {
+            let scrollView = UIScrollView()
+            let zoomView = UIView()
+            var results: [UIView?] = []
+
+            _ = scrollView.rx.willBeginZooming.subscribe(onNext: { value in
+                results.append(value)
+            }, onCompleted: {
+                completed = true
+            })
+
+            XCTAssertTrue(results.isEmpty)
+
+            scrollView.delegate!.scrollViewWillBeginZooming!(scrollView, with: zoomView)
+            scrollView.delegate!.scrollViewWillBeginZooming!(scrollView, with: nil)
+
+            XCTAssertEqual(results[0], zoomView)
+            XCTAssertNil(results[1])
+        }
+
+        XCTAssertTrue(completed)
+    }
+
+    func testScrollViewDidEndZooming() {
+        var completed = false
+
+        autoreleasepool {
+            let scrollView = UIScrollView()
+            let zoomView = UIView()
+            var viewResults: [UIView?] = []
+            var scaleResults: [CGFloat] = []
+
+            _ = scrollView.rx.didEndZooming.subscribe(onNext: { (view, scale) in
+                viewResults.append(view)
+                scaleResults.append(scale)
+            }, onCompleted: {
+                completed = true
+            })
+
+            XCTAssertTrue(viewResults.isEmpty)
+            XCTAssertTrue(scaleResults.isEmpty)
+
+            scrollView.delegate!.scrollViewDidEndZooming!(scrollView, with: zoomView, atScale: 0)
+            scrollView.delegate!.scrollViewDidEndZooming!(scrollView, with: nil, atScale: 2)
+
+            XCTAssertEqual(viewResults[0], zoomView)
+            XCTAssertNil(viewResults[1])
+            XCTAssertEqual(scaleResults, [0, 2])
+        }
+
+        XCTAssertTrue(completed)
+    }
 }
 
 @objc final class MockScrollViewDelegate