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Tiago Martinho @martinho_t tiagomartinho Automated User Interface Testing

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+ User POV Black Box Testing Offload Testers

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- Flaky Expensive Slow

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Unit Integration UI

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100x 10x x

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Anti-Pattern

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func testLogin() { application.launch() let loginButton = application.buttons["login"] loginButton.tap() wait(for: “label") label = application.labels[“label”] assertEqual("42", label.text) }

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Objectives Robust Easy to write Easy to read

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AAA Arrange Act Assert

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UI Driver Application Acceptance Test

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UI Driver Application Model Acceptance Test

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Acceptance Test No tap, click, swipe No UI references Clear state and asserts

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func testDeleteAllChannels() { model.enforce(state: .notEmptyChannelsList) model.deleteAllChannels() model.assert(condition: .emptyChannelsList) }

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func testDeleteAllChannels() { model.enforce(state: .notEmptyChannelsList) model.deleteAllChannels() model.assert(condition: .emptyChannelsList) }

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func testDeleteAllChannels() { model.enforce(state: .notEmptyChannelsList) model.deleteAllChannels() model.assert(state: .emptyChannelsList) }

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UI Driver Application Model Acceptance Test

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Application Model Represents our App Does not depend on the UI testing Framework

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UI Driver Application Model Acceptance Test

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UI Driver Drives the UI Knows nothing about our app Can be replaced

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+ Knowledge Base Short and Robust Tests Framework Independent

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Tiago Martinho @martinho_t tiagomartinho Thank you!