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Testing Fundamentals

test arrange-act-assert unit test isolation integration test boundary end-to-end workflow test positive test case negative test case boundary value analysis equivalence partitioning

Assertions & Fixtures

equality assertion exception assertion fixture setup and teardown parameterized tests temporary filesystem fixture test data factory mock object spy interaction verification

Test Doubles & Dependencies

stub return value mock external API fake repository dependency injection for testing time control with fake clock randomness control HTTP client mocking database transaction rollback tests

Coverage & Quality

line coverage branch coverage mutation testing concept flaky test detection test naming conventions assertion message quality test pyramid risk-based testing

API & Web Testing

HTTP status assertions JSON body assertions authentication test validation error test idempotency test rate-limit test contract/schema test browser form submission test

Automation & CI

test command exit codes parallel test execution test retries caution CI test matrix test artifacts JUnit XML report smoke test stage regression test suite

Software Testing / Testing Fundamentals

boundary value analysis

Learn boundary value analysis in Software Testing with a dedicated explanation, a concept-specific example, practical cautions, and a mastery check.

12 min read • Beginner

software-testing-007.py

python

def valid_age(age): return 18 <= age <= 65
def test_age_boundaries():
    assert not valid_age(17); assert valid_age(18); assert valid_age(65); assert not valid_age(66)

What to watch

Content source & attribution

Original Syntaxis Content · Original Syntaxis Content

Lesson quizzes

boundary value analysis Mastery Check →

negative test case

equivalence partitioning