=== RUN   TestAdd
--- PASS: TestAdd (0.00s)
=== RUN   TestSubtract
--- PASS: TestSubtract (0.00s)
=== RUN   TestMultiply
--- PASS: TestMultiply (0.01s)
=== RUN   TestDivide
--- FAIL: TestDivide (0.00s)
    math_test.go:45: expected 2.5, got 2.0
=== RUN   TestDivideByZero
--- PASS: TestDivideByZero (0.00s)
FAIL
coverage: 87.5% of statements
ok      github.com/user/mathlib 0.234s
