Choosing a preset
As someone who drinks green tea
Tap PRESET.
The PRESET line reads HOT.
Tap START.
The display reads HEATING and the light turns red.
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How this is tested passed
This tutorial is also an acceptance test. Its report has every step, check and screenshot from the last run.
The user story: I want to pick how hot the water gets before I start, so that I don't scald the leaves.
When the user presses preset Then the preset is HOT When the user presses start Then the kettle is heating