diff --git a/toolkit/tools/imagecustomizerapi/previewfeaturetype_test.go b/toolkit/tools/imagecustomizerapi/previewfeaturetype_test.go
new file mode 100644
index 0000000000..40b857f3c4
--- /dev/null
+++ b/toolkit/tools/imagecustomizerapi/previewfeaturetype_test.go
@@ -0,0 +1,35 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+
+package imagecustomizerapi
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPreviewFeature_IsValid(t *testing.T) {
+	validFeatures := []PreviewFeature{
+		PreviewFeatureUki,
+		PreviewFeatureOutputArtifacts,
+		PreviewFeatureInjectFiles,
+		PreviewFeaturePackageSnapshotTime,
+	}
+
+	for _, feature := range validFeatures {
+		err := feature.IsValid()
+		assert.NoError(t, err, "expected no error for valid feature: %s", feature)
+	}
+
+	invalidFeature := PreviewFeature("invalid-feature")
+	err := invalidFeature.IsValid()
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "invalid-feature")
+
+	// Test PreviewFeatureReinitializeVerity is not valid (since it's not typed as PreviewFeature)
+	var reinitFeature PreviewFeature = PreviewFeatureReinitializeVerity
+	err = reinitFeature.IsValid()
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "reinitialize-verity")
+}