diff --git a/context_test.go b/context_test.go
index 45b8411..3f2f9cc 100644
--- a/context_test.go
+++ b/context_test.go
@@ -16,6 +16,43 @@ var execTests = []struct {
 	{"echo.php", "Hello World"},
 }
 
+var bindTests = []struct {
+	value    interface{} // Value to bind
+	expected string      // Serialized form of value
+}{
+	{42, "i:42;"},                      // Integer
+	{3.14159, "d:3.1415899999999999;"}, // Floating point
+	{"Such bind", `s:9:"Such bind";`},  // String
+}
+
+type MockWriter struct {
+	buffer []byte
+}
+
+func (m *MockWriter) Write(p []byte) (int, error) {
+	if m.buffer == nil {
+		m.buffer = p
+	} else {
+		m.buffer = append(m.buffer, p...)
+	}
+
+	return len(p), nil
+}
+
+func (m *MockWriter) String() string {
+	if m.buffer == nil {
+		return ""
+	}
+
+	return string(m.buffer)
+}
+
+func (m *MockWriter) Reset() {
+	if m.buffer != nil {
+		m.buffer = m.buffer[:0]
+	}
+}
+
 func TestContextExec(t *testing.T) {
 	var w MockWriter
 
@@ -40,15 +77,6 @@ func TestContextExec(t *testing.T) {
 	}
 }
 
-var bindTests = []struct {
-	value    interface{} // Value to bind
-	expected string      // Serialized form of value
-}{
-	{42, "i:42;"},                      // Integer
-	{3.14159, "d:3.1415899999999999;"}, // Floating point
-	{"Such bind", `s:9:"Such bind";`},  // String
-}
-
 func TestContextBind(t *testing.T) {
 	var w MockWriter
 
diff --git a/engine_test.go b/engine_test.go
index f7f3055..8524c04 100644
--- a/engine_test.go
+++ b/engine_test.go
@@ -1,37 +1,10 @@
 package php
 
 import (
+	"os"
 	"testing"
 )
 
-type MockWriter struct {
-	buffer []byte
-}
-
-func (m *MockWriter) Write(p []byte) (int, error) {
-	if m.buffer == nil {
-		m.buffer = p
-	} else {
-		m.buffer = append(m.buffer, p...)
-	}
-
-	return len(p), nil
-}
-
-func (m *MockWriter) String() string {
-	if m.buffer == nil {
-		return ""
-	}
-
-	return string(m.buffer)
-}
-
-func (m *MockWriter) Reset() {
-	if m.buffer != nil {
-		m.buffer = m.buffer[:0]
-	}
-}
-
 func TestNewEngineContext(t *testing.T) {
 	e, err := New()
 	if err != nil {
@@ -40,7 +13,7 @@ func TestNewEngineContext(t *testing.T) {
 
 	defer e.Destroy()
 
-	ctx, err := e.NewContext(&MockWriter{})
+	ctx, err := e.NewContext(os.Stdout)
 	if err != nil {
 		t.Errorf("NewContext(): %s", err)
 	}