Testing in Go: philosophy and tools

Posted May 27, 2020 6:03 UTC (Wed) by kokkoro (guest, #139153)
In reply to: Testing in Go: philosophy and tools by phlogistonjohn
Parent article: Testing in Go: philosophy and tools

Defer doesn't work properly with parallel tests. If you do:


func TestFoo(t *testing.T) {
  f := NewFoo()
  defer f.Close()
  for _, c := testCases {
    c := c
    t.Run(c.name, func(t *testing.T) {
      t.Parallel()
      c.func(t, f)
    })
  }

then f.Close() will be called immediately, concurrent to all of the parallel subtests. https://github.com/golang/go/issues/17791