← VCE Software Development U4O1

Choosing core features to beta test

A main function users most need to work. A beta test focuses on these first, linked to the requirements, before minor extras.

Understanding Choosing core features to beta test in VCE Software Development U4O1

What it does: The test names the requirement it checks. This shows the core feature of saving a booking is being tested. Ranking features by priority puts the core feature (login) ahead of the minor extra (change font) in the beta plan. Core features are chosen by how much users need them, not by how easy they were to build. Placing an order is core to the purpose of the app. A profile picture is a nice extra that users can live without. When a core feature fails, the solution does not meet its requirements, so it needs to be fixed. A main function users most need to work. A beta test focuses on these first, linked to the requirements, before minor extras.

Common mistakes: "themes" is a minor feature, so it does not belong in the core list. The core list should hold the features users most need to work, such as ["login", "checkout"]. reqs["f"] looks up the text "f", which is not a key, so it causes a KeyError. Use the variable f without quotes, reqs[f], to link the feature to its requirement.

Class: _____________________  ·  Name: _____________________  ·  Date: _________

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Learning
Duo
A student-marks app has these features: entering marks, calculating averages, and changing the colour theme. Which feature should a beta test focus on first?
Changing the colour theme, because it is easy to testCalculating averages, because users most need it to work
Matches
Beta test plan: test the splash screen animation first; checkout later
↓
The plan tests a minor feature first and leaves the core feature (checkout) until later.
Applying
Meanings
Term
core feature
Meaning
A main function users most need to work. A beta test focuses on these first, linked to the requirements, before minor extras.
Practice
features = [
Testing
Gaps
feature in features:
Check Answer
Spots
1core = ["login", "themes"]
2minor = ["themes", "emoji"]

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Quick Questions

1. A student-marks app has these features: entering marks, calculating averages, and changing the colour theme. Which feature should a beta test focus on first?
A. Changing the colour theme, because it is easy to test
B. Calculating averages, because users most need it to work ✓
Beta testing focuses on core features first. Calculating averages is a main function, while a colour theme is a minor extra.
2. Which statement best describes a core feature?
A. A main function that users most need to work ✓
B. Any feature that was quick to build
Core features are chosen by how much users need them, not by how easy they were to build.
3. How do you decide which features are core features?
A. Pick the features the developer likes the most
B. Link them to the requirements of the solution ✓
Core features come from the requirements, which state what the solution must do for its users.
4. A requirement says: 'The system must save each customer order.' What should the beta test plan include?
A. A scenario where testers place and save an order ✓
B. A scenario where testers change the font size
A scenario that tests saving an order checks a feature linked directly to a requirement.
5. Which is a minor feature in a school canteen ordering app?
A. Choosing a custom profile picture ✓
B. Placing an order for lunch
Placing an order is core to the purpose of the app. A profile picture is a nice extra that users can live without.

Match the Pairs

core feature → A main function users most need to work, so a beta test checks it first
minor feature → A nice-to-have extra that is tested after the core features, if time allows
Link each beta test to a requirement so the core features are covered → Test 1 -> Requirement R2: user can save a booking
Rank features as core or minor to decide what the beta testers try first → Priority: High = login, Low = change font
Beta test plan: test the splash screen animation first; checkout later → The plan tests a minor feature first and leaves the core feature (checkout) until later.
Beta test: Test the app's features the testers like best (no link to requirements) → The features are chosen by tester preference rather than by the requirements, so core features may be missed.

Key Term

core feature
A main function users most need to work. A beta test focuses on these first, linked to the requirements, before minor extras.

Fill in the Blanks

1. for feature in features: print(feature)
Hint: Type the keyword that starts a loop to check every feature in the list.
2. if priority == "core": beta.append(feature)
Hint: Type the comparison operator that tests whether two values are equal, so only core features are chosen.
3. beta.append("login")
Hint: Type the list method that adds a core feature to the end of the beta test list.
4. print("Core features:", len(beta))
Hint: Type the built-in function that counts how many features are in the list.
5. for feature, req in links.items():
Hint: Type the dictionary method that gives each feature name with its linked requirement.

Spot the Error

Question 1
A core = ["login", "themes"]
B minor = ["themes", "emoji"]
C for f in core:
D print("Beta test:", f)
Line A — "themes" is a minor feature, so it does not belong in the core list. The core list should hold the features users most need to work, such as ["login", "checkout"].
Question 2
A reqs = {"login": "R1"}
B reqs["pay"] = "R2"
C f = "pay"
D print(f, reqs["f"])
Line D — reqs["f"] looks up the text "f", which is not a key, so it causes a KeyError. Use the variable f without quotes, reqs[f], to link the feature to its requirement.
Question 3
A core = ["login", "pay"]
B tested = ["login"]
C for f in core
D if f not in tested:
E print("Untested:", f)
Line C — A for statement must end with a colon. It should be for f in core: so the loop can check each core feature.
Question 4
A beta_plan = ()
B beta_plan.append("login")
C beta_plan.append("pay")
D print(len(beta_plan))
Line A — A tuple cannot be changed, so append() would fail. The beta plan needs to be a list, beta_plan = [], so core features can be added.
Question 5
A is_core = True
B if is_core = True:
C print("Beta test first")
D else:
E print("Test later")
Line B — A single = is assignment and cannot be used in an if condition, which causes a syntax error. Use if is_core: or if is_core == True:.

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