tlog.app/go/errors@v0.9.0/errors_go1.13_test.go (about) 1 //go:build go1.13 2 // +build go1.13 3 4 package errors 5 6 import ( 7 "os" 8 "testing" 9 10 "github.com/stretchr/testify/assert" 11 ) 12 13 func TestIs(t *testing.T) { 14 mid := Wrap(os.ErrNotExist, "middle") 15 err := Wrap(mid, "global") 16 17 assert.True(t, Is(mid, os.ErrNotExist)) 18 assert.True(t, Is(err, os.ErrNotExist)) 19 }