Instruction size test

tristanmorgan · Jul 29, 2024 · b09946a · b09946a
1 parent ac02039
commit b09946a
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Showing 2 changed files with 17 additions and 3 deletions.
diff --git a/cmd/bfg/main_test.go b/cmd/bfg/main_test.go
@@ -1,7 +1,6 @@
 package main
 
 import (
-	"io"
 	"testing"
 )
 
@@ -53,8 +52,7 @@ func TestInputReader(t *testing.T) {
 			} else if err == nil && v.err {
 				t.Error("Error was expected")
 			} else if !v.err {
-				_, ok := buff.(io.ByteReader)
-				if !ok {
+				if buff == nil {
 					t.Error("no reader returned")
 				}
 			}

diff --git a/parser/instruction_test.go b/parser/instruction_test.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"reflect"
 	"testing"
+	"unsafe"
 )
 
 var opName = map[Opcode]string{
@@ -25,6 +26,21 @@ func (inst Instruction) String() string {
 	return fmt.Sprintf("%s:%v", opName[inst.operator], inst.operand)
 }
 
+func TestInstructionSize(t *testing.T) {
+	sizes := []uintptr{2, 4, 8, 16, 32, 64, 128}
+	ok := false
+	got := unsafe.Sizeof(NewInstruction('-'))
+	for _, s := range sizes {
+		if s == got {
+			ok = true
+			break
+		}
+	}
+	if !ok {
+		t.Errorf("size not in array: got %v", got)
+	}
+}
+
 func TestNewInstruction(t *testing.T) {
 	sourceCode := "g><+-.,[]"
 	program := []Instruction{