             it("receives generated inputs") {
                 scheduler.start()
                 XCTAssertEqual(inputs.events, Recorded.events([
-					.next(10, "a"),
-					.next(20, "b")
+                    .next(10, "a"),
+                    .next(20, "b")
                     ])
-				)
+                )
             }
             it("emits nothing on `elements`") {
                 let elements = scheduler.createObserver(Never.self)

							.next(20, .notEnabled)
							])
                        )
					}

                    it("underlyingError observable receives zero generated errors") {
                        XCTAssertEqual(underlyingError.events.count, 0)
                    }

					it("disabled") {
						XCTAssertEqual(enabled.events, Recorded.events([
							.next(0, false)
							])
                        )
					}

					it("never be executing") {
						XCTAssertEqual(executing.events, Recorded.events([
							.next(0, false)
							])
                        )
					}


            var executing: TestableObserver<Bool>!
            var executionObservables: TestableObserver<Observable<String>>!
            var underlyingError: TestableObserver<Error>!
            
            beforeEach {
                inputs = scheduler.createObserver(String.self)
                elements = scheduler.createObserver(String.self)
