Split test utils, add opcode tests

test/util.go

@@ -0,0 +1,32 @@
+package test
+
+import "testing"
+
+import "github.com/firestuff/subcoding/asm"
+import "github.com/firestuff/subcoding/vm"
+
+func assembleAndExecute(t *testing.T, src string) *vm.State {
+	prog, err := asm.AssembleString(src)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	state, err := vm.NewState(prog)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = state.Execute()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	return state
+}
+
+func expectGlobalMemory(t *testing.T, state *vm.State, i uint64, expected uint64) {
+	actual := state.GlobalMemory().MustReadUnsigned(i)
+	if actual != expected {
+		t.Fatalf("Global memory index %d: expected=%d actual=%d\n", i, expected, actual)
+	}
+}