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vm/test: add tests+benchmarks for mstore

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This commit is contained in:
Martin Holst Swende 2018-06-10 22:28:46 +02:00
parent 13af276418
commit f9871ad4cf
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1 changed files with 39 additions and 0 deletions
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39
core/vm/instructions_test.go
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@ -425,3 +425,42 @@ func BenchmarkOpIsZero(b *testing.B) {
x := "FBCDEF090807060504030201ffffffffFBCDEF090807060504030201ffffffff" x := "FBCDEF090807060504030201ffffffffFBCDEF090807060504030201ffffffff"
opBenchmark(b, opIszero, x) opBenchmark(b, opIszero, x)
} }
func TestOpMstore(t *testing.T) {
var (
env = NewEVM(Context{}, nil, params.TestChainConfig, Config{})
stack = newstack()
mem = NewMemory()
)
mem.Resize(64)
pc := uint64(0)
v := "abcdef00000000000000abba000000000deaf000000c0de00100000000133700"
stack.pushN(new(big.Int).SetBytes(common.Hex2Bytes(v)), big.NewInt(0))
opMstore(&pc, env, nil, mem, stack)
if got := common.Bytes2Hex(mem.Get(0, 32)); got != v {
t.Fatalf("Mstore fail, got %v, expected %v", got, v)
}
stack.pushN(big.NewInt(0x1), big.NewInt(0))
opMstore(&pc, env, nil, mem, stack)
if common.Bytes2Hex(mem.Get(0, 32)) != "0000000000000000000000000000000000000000000000000000000000000001" {
t.Fatalf("Mstore failed to overwrite previous value")
}
}
func BenchmarkOpMstore(bench *testing.B) {
var (
env = NewEVM(Context{}, nil, params.TestChainConfig, Config{})
stack = newstack()
mem = NewMemory()
)
mem.Resize(64)
pc := uint64(0)
memStart := big.NewInt(0)
value := big.NewInt(0x1337)
bench.ResetTimer()
for i := 0; i < bench.N; i++ {
stack.pushN(value, memStart)
opMstore(&pc, env, nil, mem, stack)
}
}