essential skills for tdd part 1
TRANSCRIPT
Objective
Outline1. What? 2. Why? 3. Where do we begin? 4. What is the focus? 5. What are the artifacts? 6. When do you stop? 7. Tips
Problem Domain Analysis
Why?
Where do we begin?
Problem Statement
Sum a list of numbers
Understanding
Artifacts
• Create a diagram • Equation • Table
When do you stop?
Understanding
Tips
• Is there any assumptions • What are the assumptions
Tips
• Do not solve the problem
• Do not describe steps needed to get there
Tips
• Draw diagrams
• Use your own notation
• Express the problem statement as an equation
Problem Domain Analysis1. What? 2. Why? 3. Where do we begin? 4. What is the focus? 5. What are the artifacts? 6. When do you stop? 7. Tips
Solution Domain Analysis
Why?
Previous Phase
Understanding
Artifacts
1. Create a list of all foods 2. Create CSV header 3. Create a row for each food item 4. Save CSV file.
Retrieve list of all foods Create the csv file Create the csv header for each food in the list : create a row save the csv file
Algorithm
foods = Food.all csv = Csv.new(file_name) csv.header(header_values) for each food in foods csv.row(food) end csv.save
When do you stop?
Tips
• Solve the problem
• Describe steps needed to get there
Solution Domain Analysis1. What? 2. Why? 3. Where do we begin? 4. What is the focus? 5. When do you stop? 6. What are the artifacts? 7. Tips
Summary