diff --git a/ZcashLightClientKitTests/SychronizerDarksideTests.swift b/ZcashLightClientKitTests/SychronizerDarksideTests.swift
new file mode 100644
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+++ b/ZcashLightClientKitTests/SychronizerDarksideTests.swift
@@ -0,0 +1,83 @@
+//
+//  SychronizerDarksideTests.swift
+//  ZcashLightClientKit-Unit-Tests
+//
+//  Created by Francisco Gindre on 10/20/20.
+//
+
+import XCTest
+@testable import ZcashLightClientKit
+class SychronizerDarksideTests: XCTestCase {
+    var seedPhrase = "still champion voice habit trend flight survey between bitter process artefact blind carbon truly provide dizzy crush flush breeze blouse charge solid fish spread" //TODO: Parameterize this from environment?
+    
+    let testRecipientAddress = "zs17mg40levjezevuhdp5pqrd52zere7r7vrjgdwn5sj4xsqtm20euwahv9anxmwr3y3kmwuz8k55a" //TODO: Parameterize this from environment
+    
+    let sendAmount: Int64 = 1000
+    var birthday: BlockHeight = 663150
+    let defaultLatestHeight: BlockHeight = 663175
+    var coordinator: TestCoordinator!
+    var syncedExpectation = XCTestExpectation(description: "synced")
+    var sentTransactionExpectation = XCTestExpectation(description: "sent")
+    var expectedReorgHeight: BlockHeight = 665188
+    var expectedRewindHeight: BlockHeight = 665188
+    var reorgExpectation: XCTestExpectation = XCTestExpectation(description: "reorg")
+    
+    var foundTransactions = [ConfirmedTransactionEntity]()
+    override func setUpWithError() throws {
+        
+        coordinator = try TestCoordinator(
+            seed: seedPhrase,
+            walletBirthday: birthday,
+            channelProvider: ChannelProvider()
+        )
+        try coordinator.reset(saplingActivation: 663150)
+    }
+    
+    override func tearDownWithError() throws {
+        NotificationCenter.default.removeObserver(self)
+        try coordinator.stop()
+        try? FileManager.default.removeItem(at: coordinator.databases.cacheDB)
+        try? FileManager.default.removeItem(at: coordinator.databases.dataDB)
+        try? FileManager.default.removeItem(at: coordinator.databases.pendingDB)
+    }
+   
+    func testFoundTransactions() throws {
+        NotificationCenter.default.addObserver(self, selector: #selector(handleFoundTransactions(_:)), name: Notification.Name.synchronizerFoundTransactions, object: nil)
+        
+        try FakeChainBuilder.buildChain(darksideWallet: self.coordinator.service)
+        let receivedTxHeight: BlockHeight = 663188
+        
+    
+        try coordinator.applyStaged(blockheight: receivedTxHeight + 1)
+        
+        sleep(2)
+        let preTxExpectation = XCTestExpectation(description: "pre receive")
+        
+
+        try coordinator.sync(completion: { (synchronizer) in
+            
+            preTxExpectation.fulfill()
+        }, error: self.handleError)
+        
+        wait(for: [preTxExpectation], timeout: 5)
+        
+        XCTAssertEqual(self.foundTransactions.count, 2)
+    }
+    
+    @objc func handleFoundTransactions(_ notification: Notification) {
+        guard let userInfo = notification.userInfo,
+              let transactions = userInfo[SDKSynchronizer.NotificationKeys.foundTransactions] as? [ConfirmedTransactionEntity] else {
+            return
+        }
+        self.foundTransactions.append(contentsOf: transactions)
+    }
+    
+    func handleError(_ error: Error?) {
+        _ = try? coordinator.stop()
+        guard let testError = error else {
+            XCTFail("failed with nil error")
+            return
+        }
+        XCTFail("Failed with error: \(testError)")
+    }
+}