go/src/crypto/internal/cryptotest/blockmode.go

type MakeBlockMode …

// TestBlockMode performs a set of tests on cipher.BlockMode implementations,
// checking the documented requirements of CryptBlocks.
func TestBlockMode(t *testing.T, block cipher.Block, makeEncrypter, makeDecrypter MakeBlockMode) { … }

func testBlockModePair(t *testing.T, b cipher.Block, enc, dec MakeBlockMode, iv []byte) { … }

func testBlockMode(t *testing.T, bm MakeBlockMode, b cipher.Block, iv []byte) { … }