Test coverage metrics in Testing Fundamentals - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to calculate the percentage of lines covered by tests.

Testing Fundamentals

coverage_percentage = (lines_covered / [1]) * 100

Drag options to blanks, or click blank then click option'

Atotal_tests

Btotal_lines

Clines_missed

Dlines_covered

Attempts:

3 left

💡 Hint

Common Mistakes

Using lines_covered as denominator

Using lines_missed instead of total lines

The total number of lines in the code is needed to calculate coverage percentage.

2fill in blank

medium

Complete the code to calculate branch coverage percentage.

Testing Fundamentals

branch_coverage = (covered_branches / [1]) * 100

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Amissed_branches

Bcovered_branches

Ctotal_branches

Dtotal_lines

Attempts:

3 left

💡 Hint

Common Mistakes

Dividing by covered_branches

Using total_lines instead of total_branches

Branch coverage percentage is calculated by dividing covered branches by total branches.

3fill in blank

hard

Fix the error in the code that calculates statement coverage.

Testing Fundamentals

statement_coverage = ([1] / total_statements) * 100

Drag options to blanks, or click blank then click option'

Astatements_covered

Btotal_statements

Ctotal_tests

Dstatements_missed

Attempts:

3 left

💡 Hint

Common Mistakes

Using statements_missed in numerator

Using total_statements in numerator

Only the number of statements covered should be in the numerator to calculate coverage.

4fill in blank

hard

Fill both blanks to create a dictionary of coverage metrics for lines and branches.

Testing Fundamentals

coverage = {'lines': ([1] / total_lines) * 100, 'branches': ([2] / total_branches) * 100}

Drag options to blanks, or click blank then click option'

Alines_covered

Blines_missed

Cbranches_covered

Dbranches_missed

Attempts:

3 left

💡 Hint

Common Mistakes

Using missed counts instead of covered

Mixing lines and branches variables

Coverage percentages use the count of covered lines and branches in the numerator.

5fill in blank

hard

Fill all three blanks to create a summary report dictionary with coverage percentages and total tests run.

Testing Fundamentals

report = {'line_cov': ([1] / total_lines) * 100, 'branch_cov': ([2] / total_branches) * 100, 'tests_run': [3]

Drag options to blanks, or click blank then click option'

Alines_covered

Bbranches_covered

Ctotal_tests

Dtests_passed

Attempts:

3 left

💡 Hint

Common Mistakes

Using tests_passed instead of total_tests

Using missed counts for coverage

The report shows coverage percentages using covered counts and the total number of tests run.