diff --git a/Sources/SwiftCurrent_Testing/CustomAssertions.swift b/Sources/SwiftCurrent_Testing/CustomAssertions.swift
index 28f837234..3bb18c384 100644
--- a/Sources/SwiftCurrent_Testing/CustomAssertions.swift
+++ b/Sources/SwiftCurrent_Testing/CustomAssertions.swift
@@ -18,6 +18,16 @@ import UIKit
 #if !os(watchOS)
 /// Assert that a workflow was launched and matches the workflow passed in
 public func XCTAssertWorkflowLaunched<F>(from VC: UIViewController, workflow: Workflow<F>, file: StaticString = #filePath, line: UInt = #line) {
+    XCTAssertWorkflowLaunched(from: VC, workflow: AnyWorkflow(workflow), file: file, line: line)
+}
+
+/// Assert that a workflow was launched and matches the workflow passed in
+public func XCTAssertWorkflowLaunched(from VC: UIViewController, workflow: AnyWorkflow?, file: StaticString = #filePath, line: UInt = #line) {
+    guard let workflow = workflow else {
+        XCTAssertNoWorkflowLaunched(from: VC, file: file, line: line)
+        return
+    }
+
     let last = VC.launchedWorkflows.last
     XCTAssertNotNil(last, "No workflow found", file: file, line: line)
     guard let listenerWorkflow = last,
@@ -36,5 +46,10 @@ public func XCTAssertWorkflowLaunched<F>(from VC: UIViewController, workflow: Wo
         XCTAssert(actual == expected, "Expected type: \(expected), but got: \(actual)", file: file, line: line)
     }
 }
+
+/// Assert that no workflow was launched
+public func XCTAssertNoWorkflowLaunched(from VC: UIViewController, file: StaticString = #filePath, line: UInt = #line) {
+    XCTAssertNil(VC.launchedWorkflows.last, "workflow found when none expected", file: file, line: line)
+}
 #endif
 #endif