Added test for asserting unsupported hooking of class methods

Author: lukaskubanek

Tests/InterposeKitTests/ClassMethodInterposeTests.swift

@@ -0,0 +1,23 @@
+@testable import InterposeKit
+import XCTest
+
+final class ClassMethodInterposeTests: InterposeKitTestCase {
+    
+    func testClassMethod() {
+        XCTAssertThrowsError(
+            try Interpose(TestClass.self) {
+                try $0.prepareHook(
+                    #selector(getter: TestClass.staticInt),
+                    methodSignature: (@convention(c) (AnyObject, Selector) -> Int).self,
+                    hookSignature: (@convention(block) (AnyObject) -> Int).self
+                ) { hook in
+                    return { _ in 73 }
+                }
+            }
+        ) { error in
+            let typedError = error as! InterposeError
+            XCTAssertEqual(typedError, .methodNotFound(TestClass.self, #selector(getter: TestClass.staticInt)))
+        }
+    }
+    
+}

Tests/InterposeKitTests/TestClass.swift

@@ -23,6 +23,8 @@ public extension CATransform3D {
 }
 
 class TestClass: NSObject {
+    
+    @objc dynamic static var staticInt = 42
 
     @objc dynamic var age: Int = 1
     @objc dynamic var name: String = "Tim Apple"