MetaTesting is a collection of utilities for testing "testers," functions that run tests. It is primarily intended as a test dependency.
First we define a tester:
using Test
function test_approx(x, y)
@test x ≈ y
endThen we test it using MetaTesting:
using MetaTesting
@testset begin
# test that tester correctly passes
test_approx(1.0, 1.0)
# test that tester correctly fails
@test fails() do
test_approx(1.0, 2.0) # args not approximately equal
end
# test that tester correctly errors
@test errors() do
test_approx(1.0, (2.0,)) # isapprox not defined for this pair of types
end
end