diff --git a/conformance/chaos/actor_test.go b/conformance/chaos/actor_test.go
new file mode 100644
index 000000000..97c3b85cf
--- /dev/null
+++ b/conformance/chaos/actor_test.go
@@ -0,0 +1,153 @@
+package chaos
+
+import (
+	"context"
+	"testing"
+
+	"github.com/filecoin-project/go-state-types/exitcode"
+	"github.com/filecoin-project/specs-actors/actors/util/adt"
+	"github.com/filecoin-project/specs-actors/support/mock"
+	atesting "github.com/filecoin-project/specs-actors/support/testing"
+)
+
+func TestSingleton(t *testing.T) {
+	receiver := atesting.NewIDAddr(t, 100)
+	builder := mock.NewBuilder(context.Background(), receiver)
+
+	rt := builder.Build(t)
+	var a Actor
+
+	msg := "constructor should not be called; the Chaos actor is a singleton actor"
+	rt.ExpectAssertionFailure(msg, func() {
+		rt.Call(a.Constructor, adt.Empty)
+	})
+	rt.Verify()
+}
+
+func TestDeleteActor(t *testing.T) {
+	receiver := atesting.NewIDAddr(t, 100)
+	beneficiary := atesting.NewIDAddr(t, 101)
+	builder := mock.NewBuilder(context.Background(), receiver)
+
+	rt := builder.Build(t)
+	var a Actor
+
+	rt.ExpectValidateCallerAny()
+	rt.ExpectDeleteActor(beneficiary)
+	rt.Call(a.DeleteActor, &beneficiary)
+	rt.Verify()
+}
+
+func TestMutateStateInTransaction(t *testing.T) {
+	receiver := atesting.NewIDAddr(t, 100)
+	builder := mock.NewBuilder(context.Background(), receiver)
+
+	rt := builder.Build(t)
+	var a Actor
+
+	rt.ExpectValidateCallerAny()
+	rt.Create(&State{})
+
+	val := "__mutstat test"
+	rt.Call(a.MutateState, &MutateStateArgs{
+		Value:  val,
+		Branch: MutateInTransaction,
+	})
+
+	var st State
+	rt.GetState(&st)
+
+	if st.Value != val {
+		t.Fatal("state was not updated")
+	}
+
+	rt.Verify()
+}
+
+func TestMutateStateAfterTransaction(t *testing.T) {
+	receiver := atesting.NewIDAddr(t, 100)
+	builder := mock.NewBuilder(context.Background(), receiver)
+
+	rt := builder.Build(t)
+	var a Actor
+
+	rt.ExpectValidateCallerAny()
+	rt.Create(&State{})
+
+	val := "__mutstat test"
+	rt.Call(a.MutateState, &MutateStateArgs{
+		Value:  val,
+		Branch: MutateAfterTransaction,
+	})
+
+	var st State
+	rt.GetState(&st)
+
+	// state should be updated successfully _in_ the transaction but not outside
+	if st.Value != val+"-in" {
+		t.Fatal("state was not updated")
+	}
+
+	rt.Verify()
+}
+
+func TestMutateStateReadonly(t *testing.T) {
+	receiver := atesting.NewIDAddr(t, 100)
+	builder := mock.NewBuilder(context.Background(), receiver)
+
+	rt := builder.Build(t)
+	var a Actor
+
+	rt.ExpectValidateCallerAny()
+	rt.Create(&State{})
+
+	val := "__mutstat test"
+	rt.Call(a.MutateState, &MutateStateArgs{
+		Value:  val,
+		Branch: MutateReadonly,
+	})
+
+	var st State
+	rt.GetState(&st)
+
+	if st.Value != "" {
+		t.Fatal("state was not expected to be updated")
+	}
+
+	rt.Verify()
+}
+
+func TestAbortWith(t *testing.T) {
+	receiver := atesting.NewIDAddr(t, 100)
+	builder := mock.NewBuilder(context.Background(), receiver)
+
+	rt := builder.Build(t)
+	var a Actor
+
+	msg := "__test forbidden"
+	rt.ExpectAbortContainsMessage(exitcode.ErrForbidden, msg, func() {
+		rt.Call(a.AbortWith, &AbortWithArgs{
+			Code:         exitcode.ErrForbidden,
+			Message:      msg,
+			Uncontrolled: false,
+		})
+	})
+	rt.Verify()
+}
+
+func TestAbortWithUncontrolled(t *testing.T) {
+	receiver := atesting.NewIDAddr(t, 100)
+	builder := mock.NewBuilder(context.Background(), receiver)
+
+	rt := builder.Build(t)
+	var a Actor
+
+	msg := "__test uncontrolled panic"
+	rt.ExpectAssertionFailure(msg, func() {
+		rt.Call(a.AbortWith, &AbortWithArgs{
+			Message:      msg,
+			Uncontrolled: true,
+		})
+	})
+	rt.Verify()
+}