Initial project import

tools/v/vlib/crypto/sha256/sha256_test.v

@@ -0,0 +1,59 @@
+// Copyright (c) 2019-2024 Alexander Medvednikov. All rights reserved.
+// Use of this source code is governed by an MIT license
+// that can be found in the LICENSE file.
+import crypto.sha256
+import hash
+
+// verify sha256.Digest implements hash.Hash
+fn test_digest_implements_hash() {
+	get_digest := fn () hash.Hash {
+		return sha256.new()
+	}
+}
+
+fn test_crypto_sha256() {
+	assert sha256.sum('This is a sha256 checksum.'.bytes()).hex() == 'dc7163299659529eae29683eb1ffec50d6c8fc7275ecb10c145fde0e125b8727'
+}
+
+fn test_crypto_sha256_writer() {
+	mut digest := sha256.new()
+	digest.write('This is a'.bytes()) or { assert false }
+	digest.write(' sha256 checksum.'.bytes()) or { assert false }
+	mut sum := digest.sum([])
+	assert sum.hex() == 'dc7163299659529eae29683eb1ffec50d6c8fc7275ecb10c145fde0e125b8727'
+	sum = digest.sum([])
+	assert sum.hex() == 'dc7163299659529eae29683eb1ffec50d6c8fc7275ecb10c145fde0e125b8727'
+}
+
+fn test_crypto_sha256_writer_reset() {
+	mut digest := sha256.new()
+	digest.write('This is a'.bytes()) or { assert false }
+	digest.write(' sha256 checksum.'.bytes()) or { assert false }
+	_ = digest.sum([])
+	digest.reset()
+	digest.write('This is a'.bytes()) or { assert false }
+	digest.write(' sha256 checksum.'.bytes()) or { assert false }
+	sum := digest.sum([])
+	assert sum.hex() == 'dc7163299659529eae29683eb1ffec50d6c8fc7275ecb10c145fde0e125b8727'
+}
+
+fn test_crypto_sha256_224() {
+	data := 'hello world\n'.bytes()
+	mut digest := sha256.new224()
+	expected := '95041dd60ab08c0bf5636d50be85fe9790300f39eb84602858a9b430'
+
+	// with sum224 function
+	sum224 := sha256.sum224(data)
+	assert sum224.hex() == expected
+
+	// with sum
+	_ := digest.write(data)!
+	sum := digest.sum([])
+	assert sum.hex() == expected
+
+	// with checksum
+	digest.reset()
+	_ := digest.write(data)!
+	chksum := digest.sum([])
+	assert chksum.hex() == expected
+}