tests: Implement incus_image_alias resource

Signed-off-by: Ruihua Wen <spiffyeight77@gmail.com>

Author: SpiffyEight77

internal/image/resource_image.go

@@ -422,6 +422,8 @@ func (r ImageResource) SyncState(ctx context.Context, tfState *tfsdk.State, serv
 		return respDiags
 	}
 
+	originalStateAliases := m.Aliases
+
 	if !m.SourceImage.IsNull() {
 		var sourceImageModel SourceImageModel
 		respDiags = m.SourceImage.As(ctx, &sourceImageModel, basetypes.ObjectAsOptions{})
@@ -466,6 +468,7 @@ func (r ImageResource) SyncState(ctx context.Context, tfState *tfsdk.State, serv
 	m.Fingerprint = types.StringValue(image.Fingerprint)
 	m.CreatedAt = types.Int64Value(image.CreatedAt.Unix())
 	m.Aliases = aliasSet
+	m.Aliases = originalStateAliases
 
 	if respDiags.HasError() {
 		return respDiags

internal/image/resource_image_alias_test.go

@@ -0,0 +1,101 @@
+package image_test
+
+import (
+	"fmt"
+	"testing"
+
+	petname "github.com/dustinkirkland/golang-petname"
+	"github.com/hashicorp/terraform-plugin-testing/helper/resource"
+
+	"github.com/lxc/terraform-provider-incus/internal/acctest"
+)
+
+func TestAccImageAlias_basic(t *testing.T) {
+	resource.Test(t, resource.TestCase{
+		PreCheck:                 func() { acctest.PreCheck(t) },
+		ProtoV6ProviderFactories: acctest.ProtoV6ProviderFactories,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccImageAlias_basic(),
+				Check: resource.ComposeTestCheckFunc(
+					resource.TestCheckResourceAttr("incus_image.img1", "source_image.remote", "images"),
+					resource.TestCheckResourceAttr("incus_image.img1", "source_image.name", "alpine/edge"),
+					resource.TestCheckResourceAttr("incus_image.img1", "source_image.copy_aliases", "false"),
+					resource.TestCheckResourceAttr("incus_image_alias.alias1", "alias", "alpine-test"),
+					resource.TestCheckResourceAttr("incus_image_alias.alias1", "description", "Alpine Linux"),
+				),
+			},
+		},
+	})
+}
+
+func TestAccImageAlias_project(t *testing.T) {
+	projectName := petname.Name()
+
+	resource.Test(t, resource.TestCase{
+		PreCheck:                 func() { acctest.PreCheck(t) },
+		ProtoV6ProviderFactories: acctest.ProtoV6ProviderFactories,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccImageAlias_project(projectName),
+				Check: resource.ComposeTestCheckFunc(
+					resource.TestCheckResourceAttr("incus_project.project1", "name", projectName),
+					resource.TestCheckResourceAttr("incus_image.img1", "source_image.remote", "images"),
+					resource.TestCheckResourceAttr("incus_image.img1", "source_image.name", "alpine/edge"),
+					resource.TestCheckResourceAttr("incus_image.img1", "source_image.copy_aliases", "false"),
+					resource.TestCheckResourceAttr("incus_image.img1", "project", projectName),
+					resource.TestCheckResourceAttr("incus_image_alias.alias1", "alias", "alpine-test"),
+					resource.TestCheckResourceAttr("incus_image_alias.alias1", "description", "Alpine Linux"),
+					resource.TestCheckResourceAttr("incus_image_alias.alias1", "project", projectName),
+				),
+			},
+		},
+	})
+}
+
+func testAccImageAlias_basic() string {
+	return `
+resource "incus_image" "img1" {
+  source_image = {
+    remote       = "images"
+    name         = "alpine/edge"
+    copy_aliases = false
+  }
+}
+
+resource "incus_image_alias" "alias1" {
+  alias          = "alpine-test"
+  description    = "Alpine Linux"
+  fingerprint    = incus_image.img1.fingerprint
+
+  depends_on = [incus_image.img1]
+}
+	`
+}
+
+func testAccImageAlias_project(project string) string {
+	return fmt.Sprintf(`
+resource "incus_project" "project1" {
+  name = "%s"
+}
+
+resource "incus_image" "img1" {
+  project = incus_project.project1.name
+
+  source_image = {
+    remote = "images"
+    name   = "alpine/edge"
+    copy_aliases = false
+  }
+}
+
+resource "incus_image_alias" "alias1" {
+  alias          = "alpine-test"
+  description    = "Alpine Linux"
+  fingerprint    = incus_image.img1.fingerprint
+
+  project        = incus_project.project1.name
+  depends_on = [incus_image.img1]
+}
+	`, project)
+}