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vm: fix debugger and add tests

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1. `Run()` must be able to continue execution after a breakpoint.
2. VM must stop right before the breakpoint, not after.
3. Initial vm state is NONE, not HALT.
This commit is contained in:
Evgenii Stratonikov 2020-08-18 11:13:09 +03:00
parent 8659fd79e5
commit a080d24cf5
3 changed files with 52 additions and 11 deletions
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42
pkg/vm/debug_test.go Normal file
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@ -0,0 +1,42 @@
package vm
import (
"math/big"
"testing"
"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
"github.com/stretchr/testify/require"
)
func TestVM_Debug(t *testing.T) {
prog := makeProgram(opcode.CALL, 3, opcode.RET,
opcode.PUSH2, opcode.PUSH3, opcode.ADD, opcode.RET)
t.Run("BreakPoint", func(t *testing.T) {
v := load(prog)
v.AddBreakPoint(3)
v.AddBreakPoint(5)
require.NoError(t, v.Run())
require.Equal(t, 3, v.Context().NextIP())
require.NoError(t, v.Run())
require.Equal(t, 5, v.Context().NextIP())
require.NoError(t, v.Run())
require.Equal(t, 1, v.estack.len)
require.Equal(t, big.NewInt(5), v.estack.Top().Value())
})
t.Run("StepInto", func(t *testing.T) {
v := load(prog)
require.NoError(t, v.StepInto())
require.Equal(t, 3, v.Context().NextIP())
require.NoError(t, v.StepOut())
require.Equal(t, 2, v.Context().NextIP())
require.Equal(t, 1, v.estack.len)
require.Equal(t, big.NewInt(5), v.estack.Top().Value())
})
t.Run("StepOver", func(t *testing.T) {
v := load(prog)
require.NoError(t, v.StepOver())
require.Equal(t, 2, v.Context().NextIP())
require.Equal(t, 1, v.estack.len)
require.Equal(t, big.NewInt(5), v.estack.Top().Value())
})
}