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UC Brew CoffeeUC Brew Coffee
The Use Case Idea
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UC Brew Coffee – UC UC Brew Coffee – UC DocumentDocument
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UC Brew Coffee – Main flowUC Brew Coffee – Main flow
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The CM fills water into the water tank
The CM opens the filter box and inserts a new filter
The CM fills in roast and ground coffee into the filter and closes the filter box
The CM checks the correct position of the coffeepot
The CM starts the coffee machine (percolator)
The coffee machine (percolator) brews a fresh and drinkable coffee
The UC ends
There is no fresh (drinkable) coffee available
A fresh and drinkable coffee is brewed
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UC Brew Coffee – Alternate UC Brew Coffee – Alternate flowflow
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A3
A6a
There is no fresh (drinkable) coffee available
A fresh and drinkable coffee is brewed
The CM fills water into the water tank
The CM opens the filter box and inserts a new filter
The CM fills in roast and ground coffee into the filter and closes the filter box ?
The CM checks the correct position of the coffeepot
The CM starts the coffee machine (percolator)
The coffee machine (percolator) brews a fresh and drinkable coffee
The UC ends
The roast and ground coffee has been filled in already into the new filter. The CM closes the filter box
A power breakdown occursThe CM waits until reactivation
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UC Brew Coffee – UC Brew Coffee – Exceptional flowExceptional flow
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A5a1
A5a
There is no fresh (drinkable) coffee availableThe CM fills water into the water tank
The CM opens the filter box and inserts a new filter
The CM fills in roast and ground coffee into the filter and closes the filter box
The CM checks the correct position of the coffeepot
The CM starts the coffee machine (percolator)
The coffee machine (percolator) does not respondThe CM reads the manual and tries to solve the problem
The CM cannot solve the problem The CM stops the procedure and contacts the support
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There is no fresh (drinkable) coffee available
UC Brew Coffee at a GlanceUC Brew Coffee at a Glance
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A5a1
A1
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A5a
A6a
A4
A6a1A fresh and drinkable coffee is brewed
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Actor
What is a Use Case?What is a Use Case?
What is the goal?
What things do we need?
How to brew a coffee?
Who makes the coffee?
Is everything ready to start?
Business Objects:
Coffee, Water, Cup …
Coffee Percolator
How do you want your coffee?
Main Flow Fill percolator with water Insert coffee filter Fill in ground coffee etc.
Preconditions
Percolator has power supply
Constraints
Quality, Quantity, Time…
Post conditions
A cup of fresh brewedblack coffee
I want coffee!
??Thank you!
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Why Use Cases?Why Use Cases?
FORMALFORMAL
Verbal
Use CaseActor
Business Objects
Preconditions
Main Flow• Step 1• Step 2…
Post Conditions
Constraints
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How to test a Use Case?How to test a Use Case?
Use CaseActor
Business Objects
Preconditions
Main Flow• Step 1• Step 2…
Post Conditions
Constraints
Test CaseActor
Business Objects
Preconditions
Main Flow• Step 1• Step 2…
Post Conditions
Constraints
Test Data
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