t.Errorf("buf5 = %q, want %q", buf5.String(), "recur2")
	}
}

func TestReaderDiscard(t *testing.T) {
	tests := []struct {
		name     string
		r        io.Reader
		bufSize  int // 0 means 16
		peekSize int

		n int // input to Discard

		want    int   // from Discard
		wantErr error // from Discard

		wantBuffered int
	}{
		{
			name:         "normal case",

				sawUnmatchedErrors = true
			}
			continue
		}

		switch filename {
		case "completed":
			// Strictly speaking, there is no guarantee that seeing the error at completed:1
			// (at the end of the file) means we've seen all the errors from earlier in the file,
			// but usually it does. Certainly if we don't see the completed:1 error, we did
			// not get all the errors we expected.
			completed = true

		case "not-declared":