v/vlib/encoding/base64/base64_memory_test.v

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import encoding.base64
fn test_long_encoding() {
repeats := 1000
input_size := 3000
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s_original := []byte{len: input_size, init: `a`}
s_encoded := base64.encode(s_original)
s_encoded_bytes := s_encoded.bytes()
s_decoded := base64.decode(s_encoded)
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assert s_encoded.len > s_original.len
assert s_original == s_decoded
ebuffer := unsafe { malloc(s_encoded.len) }
dbuffer := unsafe { malloc(s_decoded.len) }
defer {
unsafe { free(ebuffer) }
unsafe { free(dbuffer) }
}
//
encoded_size := base64.encode_in_buffer(s_original, ebuffer)
mut encoded_in_buf := []byte{len: encoded_size}
unsafe { C.memcpy(encoded_in_buf.data, ebuffer, encoded_size) }
assert input_size * 4 / 3 == encoded_size
assert encoded_in_buf[0] == `Y`
assert encoded_in_buf[1] == `W`
assert encoded_in_buf[2] == `F`
assert encoded_in_buf[3] == `h`
assert encoded_in_buf[encoded_size - 4] == `Y`
assert encoded_in_buf[encoded_size - 3] == `W`
assert encoded_in_buf[encoded_size - 2] == `F`
assert encoded_in_buf[encoded_size - 1] == `h`
assert encoded_in_buf == s_encoded_bytes
decoded_size := base64.decode_in_buffer(s_encoded, dbuffer)
assert decoded_size == input_size
mut decoded_in_buf := []byte{len: decoded_size}
unsafe { C.memcpy(decoded_in_buf.data, dbuffer, decoded_size) }
assert decoded_in_buf == s_original
mut s := 0
for _ in 0 .. repeats {
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resultsize := base64.encode_in_buffer(s_original, ebuffer)
s += resultsize
assert resultsize == s_encoded.len
}
for _ in 0 .. repeats {
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resultsize := base64.decode_in_buffer(s_encoded, dbuffer)
s += resultsize
assert resultsize == s_decoded.len
}
println('Final s: $s')
// assert s == 39147008
}