Master programming syntax, solve interactive challenges & run live code in Syntaxis Explore Arena →

menu_book Course Curriculum (Software Testing) expand_more

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

unit test isolation

Learn unit test isolation in Software Testing with a dedicated explanation, a concept-specific example, practical cautions, and a mastery check.

12 min read • Beginner

software-testing-002.py

python

class PriceService:
    def total(self, repo, sku): return repo.price(sku)*2

class FakeRepo:
    def price(self, sku): return 9

def test_total_isolated_from_db():
    assert PriceService().total(FakeRepo(),'A1') == 18

What to watch

Content source & attribution

Original Syntaxis Content · Original Syntaxis Content

Lesson quizzes

unit test isolation Mastery Check →

test arrange-act-assert

integration test boundary