         let message = "My Test Message".data(using:.utf8)!
         let key = sodium.randomBytes.buf(length: sodium.shortHash.KeyBytes)!
         let h = sodium.shortHash.hash(message: message, key: key)
+
+        XCTAssertNotNil(h)
     }
 
     func testRandomNumberGeneration() {
         let sodium = Sodium()!
         let randomData = sodium.randomBytes.buf(length: 1000)
+
+        XCTAssertNotNil(randomData)
     }
 
     func testPasswordHashing() {

        let message = "My Test Message".data(using:.utf8)!
        let key = "Secret key".data(using:.utf8)!
        let h = sodium.genericHash.hash(message: message, key: key)
    }

    func testStreaming() {

        stream.update(input: message1)
        stream.update(input: message2)
        let h = stream.final()

        XCTAssertNotNil(h)
    }

    func testShortOutputHashing() {
