62 lines
2.6 KiB
Nim
62 lines
2.6 KiB
Nim
import unittest, macros, strformat, strutils, sequtils, constants, opcode_values, errors, vm / memory, bigints
|
|
|
|
proc memory32: Memory =
|
|
result = newMemory()
|
|
result.extend(0.i256, 32.i256)
|
|
|
|
proc memory128: Memory =
|
|
result = newMemory()
|
|
result.extend(0.i256, 128.i256)
|
|
|
|
suite "memory":
|
|
test "write":
|
|
var mem = memory32()
|
|
# Test that write creates 32byte string == value padded with zeros
|
|
mem.write(startPosition = 0.i256, size = 4.i256, value = @[1.byte, 0.byte, 1.byte, 0.byte])
|
|
check(mem.bytes == @[1.byte, 0.byte, 1.byte, 0.byte].concat(repeat(0.byte, 28)))
|
|
|
|
test "write rejects invalid position":
|
|
expect(ValidationError):
|
|
var mem = memory32()
|
|
mem.write(startPosition = -1.i256, size = 2.i256, value = @[1.byte, 0.byte])
|
|
expect(ValidationError):
|
|
var mem = memory32()
|
|
mem.write(startPosition = pow(2.i256, 256), size = 2.i256, value = @[1.byte, 0.byte])
|
|
|
|
test "write rejects invalid size":
|
|
expect(ValidationError):
|
|
var mem = memory32()
|
|
mem.write(startPosition = 0.i256, size = -1.i256, value = @[1.byte, 0.byte])
|
|
expect(ValidationError):
|
|
var mem = memory32()
|
|
mem.write(startPosition = 0.i256, size = pow(2.i256, 256), value = @[1.byte, 0.byte])
|
|
|
|
test "write rejects invalid value":
|
|
expect(ValidationError):
|
|
var mem = memory32()
|
|
mem.write(startPosition = 0.i256, size = 4.i256, value = @[1.byte, 0.byte])
|
|
|
|
test "write rejects valyes beyond memory size":
|
|
expect(ValidationError):
|
|
var mem = memory128()
|
|
mem.write(startPosition = 128.i256, size = 4.i256, value = @[1.byte, 0.byte, 1.byte, 0.byte])
|
|
|
|
test "extends appropriately extends memory":
|
|
var mem = newMemory()
|
|
# Test extends to 32 byte array: 0 < (start_position + size) <= 32
|
|
mem.extend(startPosition = 0.i256, size = 10.i256)
|
|
check(mem.bytes == repeat(0.byte, 32))
|
|
# Test will extend past length if params require: 32 < (start_position + size) <= 64
|
|
mem.extend(startPosition = 28.i256, size = 32.i256)
|
|
check(mem.bytes == repeat(0.byte, 64))
|
|
# Test won't extend past length unless params require: 32 < (start_position + size) <= 64
|
|
mem.extend(startPosition = 48.i256, size = 10.i256)
|
|
check(mem.bytes == repeat(0.byte, 64))
|
|
|
|
test "read returns correct bytes":
|
|
var mem = memory32()
|
|
mem.write(startPosition = 5.i256, size = 4.i256, value = @[1.byte, 0.byte, 1.byte, 0.byte])
|
|
check(mem.read(startPosition = 5.i256, size = 4.i256) == @[1.byte, 0.byte, 1.byte, 0.byte])
|
|
check(mem.read(startPosition = 6.i256, size = 4.i256) == @[0.byte, 1.byte, 0.byte, 0.byte])
|
|
check(mem.read(startPosition = 1.i256, size = 3.i256) == @[0.byte, 0.byte, 0.byte])
|