tests: add backend tests

backend/pkg/ptr/ptr_test.go

@@ -0,0 +1,53 @@
+package ptr
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestDerefOrZero(t *testing.T) {
+	// Test with nil pointer
+	var nilPtr *int
+	result := DerefOrZero(nilPtr)
+	assert.Equal(t, 0, result)
+
+	// Test with non-nil pointer
+	value := 42
+	ptr := &value
+	result = DerefOrZero(ptr)
+	assert.Equal(t, 42, result)
+
+	// Test with string
+	var nilString *string
+	resultStr := DerefOrZero(nilString)
+	assert.Equal(t, "", resultStr)
+
+	// Test with non-nil string
+	strValue := "hello"
+	strPtr := &strValue
+	resultStr = DerefOrZero(strPtr)
+	assert.Equal(t, "hello", resultStr)
+}
+
+func TestOf(t *testing.T) {
+	// Test with int
+	value := 42
+	ptr := Of(value)
+	assert.NotNil(t, ptr)
+	assert.Equal(t, 42, *ptr)
+
+	// Test with string - using explicit typing
+	var strPtr *string
+	strValue := "hello"
+	strPtr = Of(strValue)
+	assert.NotNil(t, strPtr)
+	assert.Equal(t, "hello", *strPtr)
+
+	// Test with bool - using explicit typing
+	var boolPtr *bool
+	boolValue := true
+	boolPtr = Of(boolValue)
+	assert.NotNil(t, boolPtr)
+	assert.Equal(t, true, *boolPtr)
+}