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Reimplement
waitForElementAndTap... as a typed XCUIElement method
"Typed" in that it expects an `enum` instead of a `String` to define the expected element state.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| import XCTest | ||
|
|
||
| public extension XCUIElement { | ||
|
|
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| /// Abstraction do describe possible "states" an `XCUIElement` can be in. | ||
| /// | ||
| /// The goal of this `enum` is to make checking against the possible states a safe operation thanks to the compiler enforcing all and only the states represented by the `enum` `case`s are handled. | ||
| enum State { | ||
| case exists | ||
| case dismissed | ||
| case selected | ||
| } | ||
|
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| /// Attempt to tap `self` until the given `XCUIElement` is in the given `State` or the `maxRetries` number of retries has been reached. | ||
| /// | ||
| /// Useful to make tests robusts against UI changes that may have some lag. | ||
| func tapUntil( | ||
| element: XCUIElement, | ||
| matches state: State, | ||
| failureMessage: String, | ||
| maxRetries: Int = 10, | ||
| retryInterval: TimeInterval = 1 | ||
| ) { | ||
| tapUntil( | ||
| Condition(element: element, state: state), | ||
| retriedCount: 0, | ||
| failureMessage: failureMessage, | ||
| maxRetries: maxRetries, | ||
| retryInterval: retryInterval | ||
| ) | ||
| } | ||
|
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| /// Attempt to tap `self` until its "state" matches `Condition.State` or the `maxRetries` number of retries has been reached. | ||
| /// | ||
| /// Useful to make tests robusts against UI changes that may have some lag. | ||
| func tapUntil( | ||
| _ state: State, | ||
| failureMessage: String, | ||
| maxRetries: Int = 10, | ||
| retryInterval: TimeInterval = 1 | ||
| ) { | ||
| tapUntil( | ||
| Condition(element: self, state: state), | ||
| retriedCount: 0, | ||
| failureMessage: failureMessage, | ||
| maxRetries: maxRetries, | ||
| retryInterval: retryInterval | ||
| ) | ||
| } | ||
|
|
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| /// Describe the expectation for a given `XCUIElement` to be in a certain `Condition.State`. | ||
| /// | ||
| /// Example: `Condition(element: myButton, state: .selected)`. | ||
| struct Condition { | ||
|
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| let element: XCUIElement | ||
| let state: XCUIElement.State | ||
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| fileprivate func isMet() -> Bool { | ||
| switch state { | ||
| case .exists: return element.exists | ||
| case .dismissed: return element.isHittable | ||
| case .selected: return element.isSelected | ||
| } | ||
| } | ||
| } | ||
|
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| private func tapUntil( | ||
| _ condition: Condition, | ||
| retriedCount: Int, | ||
| failureMessage: String, | ||
| maxRetries: Int, | ||
| retryInterval: TimeInterval | ||
| ) { | ||
| guard retriedCount < maxRetries else { | ||
| return XCTFail("\(failureMessage) after \(retriedCount) tries.") | ||
| } | ||
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| tap() | ||
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| guard condition.isMet() else { | ||
| sleep(UInt32(retryInterval)) | ||
| return tapUntil(condition, retriedCount: retriedCount + 1, failureMessage: failureMessage, maxRetries: maxRetries, retryInterval: retryInterval) | ||
| } | ||
| } | ||
| } |
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